Radiology Q

Question 1

What is the diff by t1/t2

Answer 1

In T1 we see the anatomy while in T2 we see the pathology, as the fluid in t2 is white so edema and inflammation and any dis (even tumor cause edema ) will be seen in the T2

Question 2

What is this sign and what is the DD

Answer 2

ice cream cone sign radiology

Question 3

What is the grade of diffuse axonal inj in MRI ?

Answer 3

stage 1 (lobar): diffuse axonal injury lesions confined to the lobar white matter, especially grey-white matter junction
most common sites: parasagittal regions of frontal lobes, periventricular temporal lobes
less common sites: parietal and occipital lobes, internal and external capsules, cerebellum
stage 2 (callosal): diffuse axonal injury lesions in the corpus callosum, almost invariably in addition to the lobar white matter
most common sites: posterior body and splenium of corpus callosum
less common sites: anterior body and rostrum of corpus callosum (usually in conjunction with posterior involvement)
usually unilateral and eccentric but may be bilateral and symmetric

stage 3 (brainstem): diffuse axonal injury lesions in the brainstem, almost invariably in addition to the lobar white matter and corpus callosum
most common sites: dorsolateral midbrain, upper pons, and superior cerebellar peduncles