ROLE OF MRI IN ROLE OF MRI IN NEURORADIOLOGY AND NEURORADIOLOGY AND HEAD & NECK IMAGINGHEAD & NECK IMAGING

DR. LIAQUAT ALI KHANDR. LIAQUAT ALI KHANCONSULTANT RADIOLOGISTCONSULTANT RADIOLOGIST

BGHBGH

SEQUENCE OF PRESENTATIONSEQUENCE OF PRESENTATION

1.1. ADVANTAGES OF MRIADVANTAGES OF MRI2.2. DISADVANTAGES OF MRIDISADVANTAGES OF MRI3.3. LIMITATIONS OF MR IMAGELIMITATIONS OF MR IMAGE4.4. NEURORADIOLOGY NEURORADIOLOGY

1.1. BRAINBRAIN2.2. SPINESPINE

5.5. HEAD AND NECKHEAD AND NECK

MRIMRI

ADVANTAGESADVANTAGES

i.i. MULTIPLANARMULTIPLANARii.ii. EXCELLENT SOFT TISSUE EXCELLENT SOFT TISSUE

CONTRASTCONTRASTiii.iii. NO IONIZING RADIATIONNO IONIZING RADIATIONiv.iv. GADOLINIUM (NON GADOLINIUM (NON --

IODINATED)IODINATED)v.v. MRA (NON ENHANCED)MRA (NON ENHANCED)

DISADVANTAGESDISADVANTAGES

i.i. TIME CONSUMINGTIME CONSUMINGii.ii. COSTLYCOSTLYiii.iii. CLAUSTROPHOBIACLAUSTROPHOBIAiv.iv. PATIENT COPATIENT CO--OPERATIONOPERATIONv.v. SAFETY ISSUESSAFETY ISSUES

LIMITATIONS OF MR IMAGELIMITATIONS OF MR IMAGE

CALCIFICATIONCALCIFICATIONCORTICAL BONECORTICAL BONECHRONIC SINUS CHRONIC SINUS SECRETIONSSECRETIONSACUTE HEMORRHAGEACUTE HEMORRHAGE

BRAINBRAINNORMALNORMAL

T1W T2W PD FLAIR

BRAINBRAINTUMOURSTUMOURS

METASTASIS

BRAIN STEM GLIOMA

GLIOBLASTOMA

MENINGIOMA

BRAINBRAINTUMOURSTUMOURS

PITUITARY MICROADENOMA

PITUITARY MACROADENOMA MEDULLOBLASTOMA

BRAIN BRAIN INFECTION VS INFLAMMATIONINFECTION VS INFLAMMATION

ACUTE DISSEMINATED ENCEPHALOMYELITIS (ADEM)

HERPES ENCEPHALITISTB Meningitis

MRS BRAIN MRS BRAIN -- NORMALNORMAL

BRAINBRAINACUTE TRAUMAACUTE TRAUMA

DIFFUSE AXONAL INJURY

MRI FEATURES OF BRAIN MRI FEATURES OF BRAIN HEMORRHAGEHEMORRHAGE

STAGESSTAGES TIMETIME COMPARTMENTCOMPARTMENT HEMOGLOBINHEMOGLOBIN T1WT1W T2WT2W

HYPERACUTEHYPERACUTE < 24 < 24 HRS.HRS.

INTRACELLULARINTRACELLULAR OXYOXY--HbHb ISOINTENSEISOINTENSE ISOINTENSEISOINTENSE

ACUTEACUTE 11--3 DAYS3 DAYS INTRACELLULARINTRACELLULAR DEOXYDEOXY--HbHb HYPOINTENSEHYPOINTENSE HYPOINTENSEHYPOINTENSE

SUBACUTESUBACUTE

EARLYEARLYLATELATE

3+ DAYS3+ DAYS7+ DAYS7+ DAYS

INTRACELLULARINTRACELLULAREXTRACELLULAREXTRACELLULAR

METMET--HbHbMETMET--HbHb

HYPERINTENSEHYPERINTENSEHYPERINTENSEHYPERINTENSE

HYPOINTENSEHYPOINTENSEHYPERINTENSEHYPERINTENSE

CHRONICCHRONIC

RIMRIMCENTERCENTER

14+ 14+ DAYSDAYS14+ 14+ DAYSDAYS

INTRACELLULARINTRACELLULAREXTRACELLULAREXTRACELLULAR

HEMOSIDERINHEMOSIDERINHEMOCHROMEHEMOCHROME

ISOINTENSEISOINTENSEISOINTENSEISOINTENSE

HYPOINTENSEHYPOINTENSEISOINTENSEISOINTENSE

HYPERACUTE SAH EARLY SUBACUTE

LATE SUBACUTE CHRONIC

BRAINBRAINACUTE INFARCTIONACUTE INFARCTION

NECT

MR – T2WI

MR - DWI

MR - ADC

BRAINBRAINHYPOXIC ISCHEAMIC ENCEPHALOPATHYHYPOXIC ISCHEAMIC ENCEPHALOPATHY

HIE

BRAINBRAINMRAMRA

CIRCLE OF WILLIS

MRA VS CTA

CAROTID

MRA VS CTA

BRAINBRAINMRAMRA

AVMVERTEBRAL OCCLUSION ANEURYSM

BRAINBRAINNORMAL DURAL SINUSESNORMAL DURAL SINUSES

MRV

CT VENOGRAPHY

BRAINBRAINSUPERIOR SAGITTAL SINUS SUPERIOR SAGITTAL SINUS

THROMBOSISTHROMBOSIS

BRAINBRAINVASCULAR MALFORMATIONSVASCULAR MALFORMATIONS

CAPILLARY TELANGIECTASIAS

CAVERNOUS ANGIOMA

VENOUS ANGIOMA

AVM

BRAINBRAINNEURODEGENERATIVE DISORDERSNEURODEGENERATIVE DISORDERS

WILSON’S DISEASE

BRAINBRAINCONGENITALCONGENITAL

GRAY MATTER HETROTOPIA CORPUS CALLOSUM LIPOMA