ONCORDigital Medical Linear Accelerator Specifications.Fighting cancer – fast and focused.

www.siemens.com/healthcare

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The philosophy behind

We are convinced that successful radiation therapy calls for the optimal resultant of speed and precision. Because speed alone at the cost of precision means to unacceptably increase the chance of affecting healthy surrounding tissue. And precision alone at the cost of speed means to lose short treatment times, high patient throughput, and a convenient patient experience out of sight.

That’s why our radiation therapy solutions aim to incorporate the optimum of both, an intelligent balance of speed and precision – to help you fight cancer fast and focused.

Fighting cancer – fast and focused.

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Linear Accelerator – ONCORThe Klystron based ONCOR™ Digital Medical Linear Accelerators provide photon and electron beams for clinical routine applications as well as for complex and advanced treatment techniques. ONCOR Linear Accelerators can come with a broad variety of features.

• All-digital platform

• Advanced user interface for intuitive setup and delivery control

• In-Line technology for 2D and 3D imaging

• Flexible energy configuration

• Modular design and embedded diagnostics for high uptime and system reliability

• Choice of MLCs to match clinical needs

– 160 MLC™ Multileaf Collimator for full field-size high precision treatments

– OPTIFOCUS™ Multileaf Collimator for IMRT and standard treatment

– ModuLeaf™ add-on MLC for stereotactic treatment

• OPTIVUE™ 500 and 1000ST-Imaging options

• MVision™ Megavoltage Cone Beam Imaging package for patient positioning

• Fast IMRT with SIMTEC™ IM-MAXX 2

• High dose rate up to 2,000MU / min

• syngo® RT Oncologist* Viewer for offline imaging review

• 550 TxT™ Treatment Table for accuracy in patient positioning

* The COHERENCE™ Suite of Oncology Workspaces is currently being rebranded to syngo Suite for Oncology. Features menti-oned may be purchased under the COHERENCE name brand.

Note: All specifications are related to control console version 9.1 and higher

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ONCOR Impression

• Basic system for all ONCOR medical linear accelerators

• Support of routine and advanced clinical applications

• Upgradable to IGRT* as well SRS & SRT* linear accelerator configurations

ONCOR Expression • Fully integrated IGRT linear accelerator for 2D

and 3D Imaging• Includes MVision, OPTIVUE 1000ST, and

Adaptive Targeting™ software• Upgradable to SRS & SRT linear accelerator

configurations

ONCOR PreScision

• For stereotactical treatment with 160 MLC and/or ModuLeaf**

• High speed and precision provided by max.dose rate of 2,000 MU/min. and 7 UF unflat photon beam

• Allows for dramatically reduced delivery time in stereotactic or hypofractionated treatments

• Upgradable to IGRT linear accelerator configu-ration

Your ONCOR – three base configurations are available

* IGRT = Image-Guided Radiation Therapy, SRS = Stereotactic Radiation Surgery, SRT = Stereotactic Radiation Therapy** 160 MLC in combination with ModuLeaf is work in progress, requires 510(k) pre-market review, and is not yet commercially available in the U.S.

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ONCOR

Features Benefits Impression Expression PreScision™ Seepage:

Klystron speed a a a –

Photons, dual, selection poss.broad range of clinical applications

a a 6, 7UF *** 8

Electronsbroad range of clinical applications

a a a 11

High dose rate photons300 and 500 MU / min.

speed a a c 8

High dose rate max. 2000 MU / min.

speed c c a 8

160 MLC* precision, speed

c c c **** 22

OPTIFOCUS* precision c a c 23

ModuLeaf precision c c c ***** 23

3-D MLCTM* 3D CRT and IMRT c – – –

SIMTEC AFS speed a a a 20

SIMTEC IM-MAXX 2 IMRT precision, speed c a a 20

VIRTUAL WEDGE™ Option speed a a a 21

Asymmetric Coll. Y-jaw precision a a a –

syngo RT Therapist speed a a a 20

OPTIVUE 500** precision c – c 24

OPTIVUE 1000ST** precision c a c 24

MVision precision c a c 24

Adaptive Targeting software precision c a c 25

syngo RT Oncologist Viewer precision c a c 25

550 TxT Treatment Table precision c c c 26

Absolute delta and motion capability

precision c a a 25

OIS Systemdata management and security

c c c 27

Gated Therapy precision c c c 27

Optigard™ – Collision Avoidance System

safety c c c 27

The following table shows which features are standard, optionally available or not included with your ONCOR.

***** One MLC has to be selected ***** One type has to be selected***** UF Unflat beam***** at this time 160 MLC in combination with

ModuLeaf is not released

***** 160 MLC in combination with ModuLeaf is work in progress, requires 510(k) pre-market review, and is not yet commercially available in the U.S.

a = standard

c = configurable / optional

– = not possible

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Content

General specifications – applying for all ONCOR configurations

Nominal Treatment Beam Energies 7X-ray Beam Parameters / Specifications 8Electron Beam Parameters / Specifications 11Leakage and Transmission 14Dosimetry System 14Mechanical Parameters and Control 15Accessories 16Dimensions and Weights 17Utility Requirements 18

Essential components – depending on your ONCOR configuration and preference

syngo RT Therapist Workspace 20SIMTEC – Treatment Automation System 20VIRTUAL WEDGE 21Jaws and Multileaf Collimators 22OPTIVUE a-Si Flat Panel Positioning System 24MVision 24Adaptive Targeting Software 25syngo RT Oncologist Viewer 25550 TxT Treatment Table 26

Additional components – depending on your needs

OPTIGARD – Collision Avoidance System 27 Gated Therapy 27 Oncology Information System 27

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General specifications – applying for all ONCOR configurations

Nominal Treatment Beam Energies1 Low X-ray (MV) High X-ray (MV) Electron Energy Range (MeV)

4 10 5 – 15

6 – 6 – 21

6 6 / 7 UF 6 – 21

6 10 6 – 21

6 15 6 – 21

6 18 6 – 21

6 23 6 – 21

6 25* 6 – 21

The energy of the photon beam is defined as the percentage ionization for a 10 cm x 10 cm field with 100 cm Target-to-Surface Distance (TSD) measured on the central axis at 10 cm depth in water, relative to the central axis ionization at the depth of maximum ionization (dmax).

The energy of the electron beam is defined as the depth of the 80% ionization in water on the central axis for a 15 cm x 15 cm fixed electron applicator (95 cm) with 100 cm TSD. Depth values are given as the distance from the water surface to the center of a 0.084 cc thimble ionization chamber.

* The 25 MV energy configuration is not available in the US.

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2 X-ray Beam Parameters / Specifications

Nominal Energy (MV) dmax (cm) % Ionization at 10 cm Water

4 1.0 ± 0.2 63 ± 1

6 1.5 ± 0.2 67 ± 1

7 UF 1.7 ± 0.2 64 ± 2

10 2.5 ± 0.2 74 ± 1

15 3.0 ± 0.2 77 ± 1

18 3.2 ± 0.2 78 ± 1

23 3.5 ± 0.2 80 ± 1

25 3.6 ± 0.2 81 ± 1

Low X-ray (MV) Dose Rate for XLow (MU / min)

High X-ray (MV)* Dose Rate for XHigh (MU / min)

4 50 & 200 10 50 & 300

6 50 & 300 – –

6 50 & 300 7 UFup to 2,000 MU/min. (up to 1,000 MU/min. for arc treatments)

6 50 & 300 10 50 & 500

6 50 & 300 15 50 & 500

6 50 & 300 18 50 & 500

6 50 & 300 23 50 & 500

6 50 & 300 25* 50 & 500

2.1 Maximum Depth and Relative Ionization in Water

2.2 X-ray Dose Rate

dmax measured for a 10 cm x 10 cm field with 100 cm TSD unless another field size is listed in the table.

The fixed dose rate available for a 10 cm x 10 cm field, measured at dmax on central axis for 100 cm TSD, is shown in the table below.

The off-axis ratios at the depth of maximum ionization for each X-ray energy in the table below will not exceed 110%.

* The 25MV high X-ray option is not available in the U.S.

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Flatness (%) 4 – 23 MV

Measurement conditions:• 10 cm x 10 cm and greater field size• 10 cm depth of water (5 cm depth for energies below 6 MV)• 100 cm Target-to-Axis Distance (TAD)3

Flatness (%) 25 MV

5

Symmetry Mean Value (%)

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2.3 X-ray Flatness* and Symmetry

2.4 X-ray Field Size

System Configuration

Min Field Size at Isocenter (cm x cm)

Max Field Size at Isocenter (cm x cm)

Counterweight 0 x 0 40 x 40

Retractable Beamshield (ONCOR Impression only)

0 x 0 40 x 39.2

Overtravel (cm)

X-leaves (outer collimators) 10

Y-jaws (inner collimators) 10

Primary Collimator CircularField Size

Nominal Size (cm)

At 100 cm TAD 50

* Flatness specifications do not apply for 7UF Beam energy

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2.8 X-ray Arc Therapy

2.5 X-ray Penumbra

2.6 Dose Monitor Linearity and Reproducibility

2.7 Beam Formation

The dose-per-degree (MU / °) for X-ray arc therapy is based on the fixed-beam dose rate.

Beam Formation Time (msec)

Dose-per- Degree Range

Linearity Reproducibility Over a period of five workingdays (eight working hours / day)

MU / min MU / ° Arcs greater than 60°upon completion

Arcs greater than 60°upon completion

1000 0.67 to 33.01 MU or 2%,whichever is greater

2 MU or 3%,whichever is greater

500 0.67 to 10.01 MU or 2%,whichever is greater

2 MU or 3%,whichever is greater

300 0.33 to 5.01 MU or 2%,whichever is greater

2 MU or 3%,whichever is greater

200 0.33 to 5.01 MU or 2%,whichever is greater

2 MU or 3%,whichever is greater

Measurement ConditionsOver a period of five working days (eight working hours / day)

Linearity Dose Rate of 50 MU / min (%)

Reproducibility

4 / 10 MV energy configuration• Programmed range of 21 MU to 1,000 MU for Monitor 1

± 1≤ 1 MU or 2%, whichever is greater

All other energy configurations• Programmed range of 21 MU to 1,000 MU for Monitor 1

± 1≤ 1 MU or 2%,whichever is greater

Beam Formation Time (msec)

Beam stability typically achieved within 250 *

* Beam Formation 250 msec, whereby mostly might be faster (to 170 msec)

Penumbra (mm) 4 – 23 MV

Measurement conditions:(Maximum distance along the major axes between the 80% and 20% points) of the absorbed dose• 10 cm x 10 cm (MLC)• 10 cm depth of water (5 cm depth for energies below 6 MV)• 100 cm TAD

7 +- 2

Penumbra (mm) 25 MV

8 +- 2

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3.2 Dose Rate

3.1 Maximum Surface Dose and Relative Ionization

Electron Beam Parameters / SpecificationsThe ONCOR Linear Accelerators come with six user-selectable electron energies (the ONCOR PreScision configuration has five electron energies), unless configured as a photon energy system only. The electron energies are either defined by a package or user selectable from the energy range given in section 1.

Depth values are given as the distances from the water surface to the center of the measuring device.

The following packages are available: • Standard energies: 6, 8, 10, 12, 15, 18 MeV• High Energy Klystron: 6, 9, 12, 15, 18, 21 MeV• User selectable package

The surface dose is shown for a 15 cm x 15 cm fixed electron applicator with 100 cm TSD. Water equivalent plastic blocks are used in the buildup region to measure the dose. The values are expressed as a percentage of dmax.

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Nominal Energy(MeV)

Maximum SurfaceDose (% dmax)

Relative 30% Ionization Depth (cm)

Relative 80% IonizationDepth (cm)

5 77 2.5 1.7 ± 0.2

6 79 2.8 2.0 ± 0.2

7 81 3.2 2.3 ± 0.2

8 83 3.7 2.7 ± 0.2

9 85 4.1 3.0 ± 0.2

10 87 4.6 3.4 ± 0.2

12 90 5.3 4.0 ± 0.2

14 92 6.0 4.5 ± 0.2

15 93 6.8 5.0 ± 0.2

16 93 7.3 5.3 ± 0.2

18 93 8.2 6.0 ± 0.2

20 93 9.3 6.5 ± 0.2

21 93 9.4 6.7 ± 0.2

Normal Dose Rate (MU / min)

Measurement conditions:• 15 cm x 15 cm fixed field applicator• Measured at central axis at point of maximum ionization• 100 cm TAD300

High Dose Rate(MU / min)

900

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3.3 Flatness and Symmetry

The maximum value of the ratio of the absorbed dose (averaged over not more than 1 cm2) anywhere in the radiation field at the depth of 0.5 mm to the maximum

absorbed dose on the radiation beam axis does not exceed 109%.

Flatness for Fixed Field (%) Symmetry (%)

NominalEnergy (MeV)

• Two points 1.5 cm inside 50% beam intensity• Relative to the beam intensity on the central axis• Measured at dmax• 100 cm TSD

15 cm x 15 cmand greaterfield measuredalong centralaxis at dmax size

10 cm x 10 cm 15 cm x 15 cm 20 cm x 20 cm 25 cm x 25 cm

5 5 6 6 6 2

6 4 5 5 5 2

7 4 5 5 5 2

8 4 5 5 5 2

9 3 4 4 5 2

10 3 4 4 4 2

12 3 3 4 4 2

14 3 3 3 4 2

15 3 3 3 4 2

16 3 3 3 4 2

18 3 3 3 4 2

20 3 3 4 4 2

21 3 3 4 6 2

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3.5 X-ray Contamination

3.6 Electron Arc Therapy

The X-ray contamination of the electron beam is measured in water on the central axis 10 cm beyond

the depth at which the electron beam intensity is 10% of the maximum value.

The dose-per-degree (MU / °) for electron arc therapy is based on the fixed-beam dose rate.

3.4 Electron Beam Linearity and Reproducibility

Nominal Energy (MeV) X-ray Contamination (Maximum %)

3 0.5

4 0.5

5 1.0

6 1.3

7 1.5

8 1.7

9 2.0

10 2.0

12 2.0

14 3.0

15 3.0

16 3.2

18 3.5

20 4.0

21 4.0

Electron Dose-per-Degree Range (MU / °)

Minimum Maximum

2 10

Electron Arc Linearity and Reproducibility for Arcs Greater than 60°

Linearity Reproducibility

1 MU or 2%, whichever is greater 2 MU or 3%, whichever is greater

Linearity Dose Rate of 50 MU / min (%)

Measurement conditions:• Over a period of five working days

(eight working hours / day)2

Reproducibility

≤ 1 MU or 2%,whichever is greater

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Leakage and Transmission

Dosimetry System

The dual dosimetry system consists of an X-ray dose chamber and a thin-walled electron dose chamber, and is arranged in a primary / secondary combination. Dose monitor readouts display four digits.

The primary dose monitor system terminates the treatment when reaching coincidence with the

preset value. Backup termination is provided by the secondary dose monitor and time interlock systems.

In case of power failure during treatment, MUs, arc, and time values, as well as all other treatment setup parameters, are stored in nonvolatile memory for recovery.

% of Un-Attenuated Useful Beam

Radiation to the patient plane• Over a circular area of 2 m radius• Centered on and perpendicular to the central

axis of the beam at isocenter• Outside the projection of the primary collimator

0.1

Radiation outside the patient plane• 1 m from the path of the accelerated electrons• Measured with a 30 cm3 ionization chamber

with a 1 cm thick buildup cap

0.1

Collimator transmission• Max value measured according to IEC 601-2-1• The X-ray transmission through one set of

adjustable collimator jaws

1.0

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5

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6.1 Gantry

6.2 Field Parameter**

Mechanical Parameters and Control6Resolution (°) Accuracy (°)

0.1 ± 0.5

Gantry Value

Nominal rotation range (°) ± 190

Nominal speed (RPM) 1.0

Nominal speed (° / sec) 6.0

Nominal target-to-isocenterdistance (cm)

100

Isocenter Information Value

Radiation isocenter to mechanical isocenter maximum distance

The distance does not exceed 1.0 mm, independent of the supported energies, gantry, collimator and table positions, and beam shaping devices.

CAX* maximum deviationAll radiation beams have a central axis, that intersects within a sphere of 1.0 mm radius for all supported energies, gantry, collimator and table positions, and beam shaping devices.

Isocenter height The nominal distance between floor and isocenter is 130.8 cm.

Nominal target-to-isocenterdistance (cm)

100

** CAX center of radiation beam** Further parameters can be found in the respective MLC sections.

X-ray-to-Light Field Coincidence

Measurement conditions:• Corresponding X-ray field edge (50% intensity at dmax)• Visible field edge of light field• 100 cm TAD• Field sizes 5 cm x 5 cm to 40 cm x 40 cm• At all gantry positions

2 mm or 1%, whichever is greater

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7.1 Distance Indicator

7.2 Wedge Filters

7.3 Beam Blocks and Trays

Accessories

All wedge filters are coded and interlocked for the correct field size.

For additional information, please refer to the Accessories Data Sheet.

Range (cm) Resolution (cm) Accuracy (cm) at TSD 100 cm

Optical range finder 75 to 130 0.5 ± 0.2

Mechanical front pointer

85 to 110 1.0 ± 0.2

Backpointer indicator 80 to 150 0.6 0.6

Wedge Angles (°)

15 30 45 60

In-plane (toe in / toe out) Yes Yes Yes Yes

Cross-plane (toe left / toe right) Yes Yes Yes Yes

Field size in wedge direction (cm) 25 25 25 20

Field size in non-wedge direction (cm) 30 30 30 30

Half Wedge Angles (°)

15 30 45

In-plane (toe in / toe out) Yes Yes Yes

Cross-plane (toe left / toe right) Yes Yes Yes

Field size in wedge direction (cm) 20 20 20

Field size in non-wedge direction (cm) 30 30 30

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Beam Block and Tray Weight

Maximum 15 kg (33 lbs)

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7.4 Electron Applicators

Fixed Electron Applicators

10 cm x 10 cm 15 cm x 15 cm 20 cm x 20 cm 25 cm x 25 cm 5 cm diameter

Nominaldistance fromtarget (cm)

95 95 95 95 95

Small Field Round Cones – Diameter (cm)

2 3 4 5 6 7 8

Nominaldistance fromtarget (cm)

95 95 95 95 95 95 95

Rotational Electron Applicator

Nominal distance from target (cm) 72.5

Maximum field size (cm) 6 x 25

For additional information, please refer to the Product Planning Guide for the ONCOR Linear Accelerator.

Dimensions and Weights8Unit Type Height Length Width Weight Counterweight

ONCOR 260.4 cm102.5 in

313.7 cm123.5 in

143.0 cm56.5 in

7,730 kg17,000 lbs(Incl. counterweight)

2,155 kg4,741 lbs

Universal Base Frame

33.0 cm13.0 in

339.1 cm133.5 in

160.0 cm63.0 in

592 kg1,302 lbs

–

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For additional information, please refer to the Product Planning Guide for the ONCOR Linear Accelerator.

Utility Requirements

9.1 Incoming Power Requirements

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Incoming Power (VAC) 3-Phase Delta Frequency (Hz)

USA 480 Yes 50 or 60

International 400 / 200 Yes 50 or 60

9.2 Facility Water Cooling Specifications and Recommendations

Facility Water ONCOR

Constant facility cooling water – to be provided by customer 28 l / min (7.5 gal / min)

Maximum inlet pressure 552 kPa (80 PSI)

Minimum pressure drop 241 kPa (35 PSI)

Maximum inlet temperature 25° C (77° F)

Minimum inlet temperature 16° C (60° F)

Optimum inlet temperature 18° C (65° F)

Water Quality (PPM)

Total dissolved solids (CaCO3) < 250

Annual average of total suspended solids (CaCO3) < 30

Dissolved gas (hydrogen sulfide H2S) < 0.05

Total hardness (CaCO3) < 85

A 50-micron in-line filter with 95% efficiency is required. Water shall be free of iron bacteria and manganese bacteria.

Heat Dissipation from Linear Accelerator to Water ONCOR

In standby mode 7.0 kW (24000 BTU / hr)

In treatment mode 30.0 kW (102000 BTU / hr)

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9.3 Air Conditioning

Air Conditioning

Room temperature 20° C (68° F) to 26° C (78° F)

Relative humidity 40 – 65%

Adequate ventilation Required

Minimum room volume / hour 2 (depending on room size and airflow pattern)

Heat Dissipation from Linear Accelerator in Air

ONCOR Console Node

In standby mode 2.7 kW (9200 BTU / hr) 0.2 kW (800 BTU / hr)

In treatment mode 6.5 kW (22000 BTU / hr) 0.2 kW (800 BTU / hr)

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Essential components – enhancing the performance and the productivity of your ONCOR linear accelerator

syngo RT Therapist Workspace

SIMTEC – Treatment Automation System

The syngo-based Therapist Workspace* connects the comprehensive treatment delivery system (ONCOR) equipped with a unique portal imaging device (OPTIVUE) – for accurate and efficient patient positioning – with a flexible Oncology Information Management System.

An effective Oncology Workflow Solution™ for radiation therapy treatment delivery and recording, the Therapist Workspace provides the following clinical advantages:

• Auto assisted patient positioning

• OPTIVUE a-Si flat panel portal imager support with automated deployment, positioning, and retraction

• Automatic portal image acquisition

SIMTEC AFS enhances the productivity of the ONCOR system in combination with VIRTUAL WEDGE, MLC, the 550 TxT Treatment Table control, OPTIVUE, and verification option.

• DICOM RT support – multi-segment fields and fractional MUs

• 160 MLC, OPTIFOCUS and ModuLeaf MLC support

• Integration of portal imaging and treatment delivery into one workflow

• Single user interface for most clinical activities Therapist Workspace provides easy and accurate delivery of industry-leading techniques, such as: • SIMTEC AFS • SIMTEC IM-MAXX 2 for very fast IMRT treatment

process • MVision – Megavoltage Cone Beam Imaging

The SIMTEC IM-MAXX 2 option provides an immediate delivery of IMRT segments, which enables the ONCOR to deliver IMRT quickly and efficiently.

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About the availability on the respective ONCOR configuration see the table on page 5.

* The COHERENCE Suite of Oncology Workspaces is currently being rebranded to syngo Suite for Oncology. Features mentioned may be purchased under the COHERENCE name brand.

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The virtual wedge function integrated into the ONCOR is used to achieve an accumulated dose profile and ísodose distribution similar to that of a physical wedge accessory. This is accomplished by controlling the travel of a secondary collimator jaw and the X-ray beam intensity during irradiation.

Depending on the orientation of the wedge, one of the 4 collimator jaws is selected to be the moving jaw, and at constant average speed is moved during treatment. At the same time, the dose rate is varied as a function of the jaw position. In the presence of a Multileaf Collimator, like OPTIFOCUS or 160 MLC, the Y-jaws ONLY are used for virtual wedges.

The virtual wedge factors are almost identical for all symmetric fields of different wedge angles, and slightly different for asymmetric fields.

Virtual wedge parameters:Energies:• Supported for all energies, except 7 UF• Supported range 25 MV: 15-60 degrees

in 1 degree increments• Supported range 4 MV: 15-55 degrees

in 1 degree incrementsDose range:• Supported dose range: 30 MU – 9900 MU• guaranteed 50 to 250 MU/min*Field sizes: • Field size up to 40 x 20 cm

VIRTUAL WEDGE12

** The dose rate area might be even bigger

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Parameter 160 MLC

Number of leaves 160

Absolute leaf positioning accuracy at isocenter (mm) ±0.5

Leaf positioning reproducibility at isocenter (mm) ±0.3

Maximum circular field diameter (cm) 40

Leaf width at isocenter (mm) 5

Variance of leaf width at isocenter (µm) 200

Interdigitation Yes

Maximum leaf speed (mm / s) 40

Servo-control speed Yes

Reticule Built in

Maximum field size (cm x cm) 40 x 40

Minimum field size (cm x cm) 0 x 0

Parameter Value

Jaw height (mm) 77

Jaw positioning accuracyField sizes of 5 cm x 5 cm

Non-overtravel region: ±1 mm or ±1%Overtravel region: ±1.25 mm

Overtravel of jaws (cm) 20

Jaw speed (mm / sec) 20.0

Jaw end design Pivoting

13.1 Y-Jaws

ONCOR can be delivered with different types of Multileaf Collimators, 160 MLC, OPTIFOCUS and the add-on MLC ModuLeaf. The 160 MLC as best-in-class Multileaf-Collimator helps you fight cancer fast and focused.The 160 MLC combines fast leaf movement up to 4 cm per second with the highest possible resolution atthe lowest leakage and penumbra. The 160 MLC is seen as center point of our overall solution for fast IMRT,IM-Confident™ Plan. So 160 MLC permits fast and precise radiation therapy – as effective and as efficient aspossible.

For additional information, please refer to the 160 MLC Premium Data Sheet.

13.2 160 MLC

Jaws and Multileaf Collimators13

The 160 MLC as best-in-class Multileaf-Collimator helps you fight cancer fast and focused. It combines fast leaf movement up to 4 cm per second with the highest possible resolution at the lowest leakage and penumbra.

The 160 MLC is seen as center point of our overall solution for fast IMRT, IM-Confident Plan. So 160 MLC permits fast and precise radiation therapy – as effec-tive and as efficient as possible.

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13.3 OPTIFOCUS

13.4 ModuLeaf

Maximum leaf movement of a single leaf (cm) 20

Overtravel of leaves (cm) 20

Leaf material Tungsten

Leaf height (mm) 95

Individual leaf guide to ensure reliable leafdistance and friction minimization

Yes

The OPTIFOCUS Multileaf Collimator, for accurate and flexible beam shaping. OPTIFOCUS is fully integrated within ONCOR and the COHERENCE

Therapist Workspace, as well as the control console and single in-room hand pendant.

For additional information, please refer to the MLC Data Sheet

Siemens offers a unique add-on MLC, the ModuLeaf, for small-field IMRT and stereotactic applications. Its resolution, transmission values, and field size

provide a flexible tool for a large variety of clinical applications.

For additional information, please refer to the ModuLeaf Data Sheet.

Parameter OPTIFOCUS

Maximum size (cm x cm) 40 x 40

Number of leaf pairs 41

Leaf size (cm) 1 (outer leaf pairs 0.5)

Leaf transmission (%) < 1 %

Leaf positioning accuracy (mm) ± 1

Penumbra (mm) 7 ± 2

Over travel (cm) 10

Leaf speed (cm / sec) 2.0

Parameter ModuLeaf

Maximum size (cm x cm) 10 x 12

Number of leaf pairs 40

Leaf size (cm) 0.25

Leaf transmission (%) < 2.5 %

Leaf positioning accuracy (mm) ± 0.5

Penumbra (mm) < 4 (5 cm x 5 cm field)

Over travel (cm) > 5.5

Leaf speed (cm / sec) 2.0

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Parameter OPTIVUE 500 OPTIVUE 1000ST

Fully automated deployment / retraction Yes Yes

Collision detection system Yes Yes

Active imaging area (cm x cm) 41 x 41 41 x 41

Resolution (pixel) 512 x 512 1,024 x 1,024

Pixel depth (bit) 16 16

Pixel pitch (mm) 0.4 (400 microns) 0.4 (400 microns)

Positional repeatability (mm) ±1.0 ±1.0

Positional accuracy (mm) ± 2.0 ± 2.0

Vertical travel range / SID (cm) 115.0 to 160.0 115.0 to 160.0

Imaging modes Free running mode, single, or continuous scan mode

Free running mode, single, or continuous scan mode

The OPTIVUE amorphous Silicon (a-Si) portal imager is fully integrated within ONCOR, the control console, and the in-room hand pendant.

The MVision Megavoltage Cone Beam Imaging Pack-age from Siemens is a volumetric in-line target imag-ing solution for advanced radiotherapy. Designed to be efficient and accurate, MVision represents a simple and cost-effective solution for Image-Guided Radiation Therapy (IGRT). The same megavoltage source is used for imaging and treatment, so maxi-mum accessibility is maintained, as well as patient comfort. No additional calibrations or isocenter adjustments are needed, making patient reposition-ing versatile and efficient.

The ONCOR Expression comes standard with this volu-metric imaging technology. Operating in arc therapy mode, in combination with the OPTIVUE 1000ST a-Si flat panel, images are acquired at different posi-tions around the patient.

A large number of 2D projection images are then acquired with photons primarily in the megaelectron volt (MeV) energy range.

A cone beam CT image is reconstructed from this set of open field projection images acquired at different angles.

For additional information, please refer to the MVision Data Sheet.

For additional information, please refer to the OPTIVUE Data Sheet.

Parameter MVision

Distance source to detector (cm) 145

Angle covered (°) 200

Image acquisition One projection per degree 270° to 110°

Gantry rotation orientation Clockwise

Acquisition time Depends on dose. For 10 MU: 45 sec.

Total dose Adjustable, typically 5 MU for head & neck and 12 MU for pelvis

Positional accuracy (mm) ± 2.0

MVision – Megavoltage Cone Beam Imaging

OPTIVUE – Imaging devices14

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Adaptive Targeting Software16Adaptive Targeting enables the therapist to automat-ically calculate 3D patient offset values, verify pa-tient positioning, and continue with the treatment, thus improving workflow efficiency.

• The reference planning CT for the patient is auto-matically loaded into the Adaptive Targeting reg-istration software, including anatomical contours and points of interest

• The software performs an automatic 3D-3D registra-tion between the MVCB and the reference CT, using a maximization of mutual information algorithm – manual adjustment of the registration is possible

• The table shift correction is constantly updated

The Adaptive Targeting application includes:• A full suite of syngo 3D tools• 3D image fusion for multi-modality support

of therapy processes• All the workflow enhancements of the

syngo platform• Easy-to-use common user interface for all

Siemens Medical applications• DICOM/DICOM RT connections

• Planning data import • Treatment data import • Data registration • Isocenter identification • Isocenter offset determination

The syngo RT Oncologist Viewer combines Siemens imaging expertise, the syngo standard medical imaging platform, and leading-edge oncology tools to provide comprehensive Oncology Workflow Solutions for radiation oncologists.

The Viewer supports target delineation and provides leading-edge contouring tools. It also enables image review, isocenter location, and plan review capabilities. In addition, treatment verification allows oncologists to visualize and compare reference images and treat-ment images for approval and offset determination.

The Oncologist Viewer also offers the followingclinical advantages:

• Treatment review task card for portal image review

• OIS access hosts validated OIS systems

• 2D Image Viewer

• syngo filming task card

• Adaptive Targeting software

syngo RT Oncologist Viewer17

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The 550 TxT Treatment Table is engineered to meet increasing demands for accuracy, stability, and pre-cision, and to fulfill the current and future clinical requirements of modern radiation oncology depart-ments. Innovative features improve patient position-ing to new standards while providing a unique lifting mechanism and exceptional mechanical strength that allow for a load capacity of 550 pounds (250 kg).

In addition, a newly designed user interface providesergonomic controls with tactile feedback, allowing the user to control the treatment table with a choice of manual or motorized movements.

Clinical Features and Benefits

• Fully motorized table motions with smooth ramp-up speed control

• All motions are available simultaneously, allowing for swift and accurate patient positioning

• Free-float tabletop motion capability supports fast non-routine and standard clinical setups

• Programmable upward and downward motion stops help to position patients safely and minimize collisions

• 1050 mm vertical range of motion with 650 mm tabletop height in lowest position provides pa-tients with ease of access to the table

• Backlit buttons, easy-to-read LED displays, andintegrated flashlight assist staff with their daily routines and patient positioning

• Readouts in standard or optional IEC convention

• Data integration

• Optional 550 TxT controls from the linear accelerator control console for absolute and delta motions

For additional information, please refer to the 550 TxT Treatment Table Data Sheet.

The 550 TxT Treatment Table can be ordered with one of four different carbon fiber tabletops.

Tabletops Description

TT-DFulfills requirements for the diagnostic use. Recommended for CTVison Max. patient weight: 250 kg (550 lbs.)

TT-ASpecially designed for adaptive radiotherapy (e.g., IGRT) application. Max. patient weight: 250 kg (550 lbs.)

TT-SSpecially designed for stereotactic applications.Max. patient weight: 250 kg (550 lbs.)

TT-MMultipurpose tabletop.Max. patient weight: 250 kg (550 lbs.)

550 TxT Treatment Table18

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OPTIGARD – Collision Avoidance System19OPTIGARD, the Siemens collision avoidance system, is a laser-based system that automatically detects impending collision in a defined detection zone

around the accessory tray holder. Upon detection of impending collision, OPTIGARD provides a signal to the linear accelerator and triggers an interlock.

The ONCOR system is available with a Gated Therapy option. Gated Therapy allows the clinical user to choose the type of external control device to use with the ONCOR Linear Accelerator. Input signals from such a device can be the result of patient pa-rameters such as chest movement, respiratory cycle, or a switching mechanism. A special Gated Therapy mode and user interface provide for a seamless de-livery process.

Organ motion in the thorax and abdomen can present significant limitations during the entire RT process: imaging, planning, and delivery. During radiation delivery, respiratory motion causes a smearing of the dose distribution, resulting in a deviation between the intended dose and the dose actually delivered. The Gated Therapy option allows an external device, such as the ANZAI gating system, to control the radiation delivery functions of the ONCOR Linear Accelerator dur-ing Gated Therapy treatments.

Gated Input Signal

Maximum toggle frequency of gated input signal 1 Hz

Minimum pulse width (msec) 250

Gated Therapy

OIS – Oncology Information System

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Additional components – depending on your needs

The ONCOR Linear Accelerator can be supplied with a comprehensive Oncology Information System (OIS).

The OIS solution provides advanced tools to manage, track and evalute treatment related data through all stages of the therapy process. A variety of modules

allows for customizing the OIS solution to meet an institution’s needs.

It also connects the Oncology department with the gen-eral Hospital Information System by using international communication standard such as DICOM and HL7.

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www.siemens.com/healthcare

Local Contact Information

Siemens AGHealthcare Sector Oncology Care SystemsDoris-Ruppenstein-Str. 491052 ErlangenGermanyPhone: +49 9131 84-0www.siemens.com/healthcare/oncology-care

Global Business Unit

Siemens AGHealthcare SectorOncology Care SystemsDoris-Ruppenstein-Str. 4DE-91052 ErlangenGermanywww.siemens.com/healthcare/oncology-care

On account of certain regional limitations of sales rights and service availability, we cannot guarantee that all products included in this bro-chure are available through the Siemens sales or-ganization worldwide. Availability and packaging may vary by country and are subject to change without prior notice. Some/all of the features and products described herein may not be available in the United States or Japan.

The information in this document contains gen-eral technical descriptions of specifications and options as well as standard and optional features which do not always have to be present in indi-vidual cases.

Siemens reserves the right to modify the design,packaging, specifications, and options describedherein without prior notice. Please contact your local Siemens sales representative for the most current information.

All product names and company names are trade-marks or registered trademarks of the correspond-ing companies.

Note: Any technical data contained in this docu-ment may vary within defined tolerances. Origi-nal images always lose a certain amount of detail when reproduced.

Order No. A91OCS-290-1C1-10-7600 | Printed in Germany | © 10.2009, Siemens AG

Global Siemens Headquarters

Siemens AGWittelsbacherplatz 280333 MuenchenGermany

Global Siemens Healthcare Headquarters Siemens AGHealthcare SectorHenkestr. 12791052 ErlangenGermanyPhone: +49 9131 84-0www.siemens.com/healthcare

Legal Manufacturer Siemens AGWittelsbacherplatz 2DE-80333 MuenchenGermany