Medical physics slide show
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Transcript of Medical physics slide show
![Page 1: Medical physics slide show](https://reader037.fdocuments.net/reader037/viewer/2022110307/5563cb0ed8b42aa0588b4e14/html5/thumbnails/1.jpg)
REAL LIFE PHYSICS IN MEDICINE
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is
X-rays, CT scans, MRI scansAnd new scanning
technologies PET scans and MEG
are essential in the development of many scanning
technologies like:
![Page 3: Medical physics slide show](https://reader037.fdocuments.net/reader037/viewer/2022110307/5563cb0ed8b42aa0588b4e14/html5/thumbnails/3.jpg)
Learning objectivesAt the end of the activities you
can:1. Explain the work of the tolls2. Distinguish the advantages and
disadvantages of x-rays, CT scans, MRI scans, PET scans and MEG scans
3. shows the results of a every scanners X-rays, CT scans, MRI scans
And new scanning technologies PET scans and MEG
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Use the electromagnetic wave
work
![Page 5: Medical physics slide show](https://reader037.fdocuments.net/reader037/viewer/2022110307/5563cb0ed8b42aa0588b4e14/html5/thumbnails/5.jpg)
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X-rays X-rays is very little
ordinary light can pass through skin. It’s either absorbed at the surface or reflected back.
X-rays to “see” inside we need a kind of “light” with more energy.
Skin
Ordinary Light
X rays
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The tolls of x-rays
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Taking “X rays”
The patient is placed in front of a source of X
RAYS
A photo graphic plate is placed on the other side of the patient
Most of the X rays pass
through the patient’s body
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Real Taking “X rays”
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X-rays are absorbed by bone but can pass through skin and
soft tissue
bone
Soft tissue
Photographic
plate
X rays that are absorbed in the photographic plate cause chemical changes. These show as darkened areas when the plate is developed.
![Page 11: Medical physics slide show](https://reader037.fdocuments.net/reader037/viewer/2022110307/5563cb0ed8b42aa0588b4e14/html5/thumbnails/11.jpg)
X-rays are also partly absorbed by some tissues in the body this creates a
more subtle picture.
bone
Soft tissue
Photographic
plate
![Page 12: Medical physics slide show](https://reader037.fdocuments.net/reader037/viewer/2022110307/5563cb0ed8b42aa0588b4e14/html5/thumbnails/12.jpg)
The result of the x rays scanner
What part of the body do these X Rays show?
Answer:
A knee
![Page 13: Medical physics slide show](https://reader037.fdocuments.net/reader037/viewer/2022110307/5563cb0ed8b42aa0588b4e14/html5/thumbnails/13.jpg)
Advantages of Basic
X ray Imaging X rays are easy to produce X ray machines are relatively
cheap In controlled doses X ray
images are safe to the patient
![Page 14: Medical physics slide show](https://reader037.fdocuments.net/reader037/viewer/2022110307/5563cb0ed8b42aa0588b4e14/html5/thumbnails/14.jpg)
Disadvantages of X ray Imaging
In large doses X rays can be harmful to health
Images are only “shadow prints” in one “plane”…..no 3D information
Imaging of soft tissues and organs is not always very detailed
![Page 15: Medical physics slide show](https://reader037.fdocuments.net/reader037/viewer/2022110307/5563cb0ed8b42aa0588b4e14/html5/thumbnails/15.jpg)
Check Understanding Answer True or False 1. X rays are made of the same
“stuff” as visible light. They are both forms of “electromagnetic radiation”.
2. X rays were discovered completely by accident during a physics experiment carried out in 1965.
3. X rays can damage healthy tissues.
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MRI What do the letters stand for?
M……….. Magnetic
R………… Resonance
I…………. Imaging
MRI scanners do not use X rays.
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CONCLUTION PHYSICS is very important to
MEDICINE because use
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video