A patient comes with proptosis and abducent n palsy. a dark homogenous mass on t2w MRI is seen which shows intense enhancement with contrast. Diagnosis is?
a. cavernous hemangioma
Central dot sign is seen in?
a. carolis disease
b. primary sclerosing cholangitis
c. polycystic liver disease
On usg diffuse thickening of gall bladder with hyperechoic shadow at neck and comet tailing is seen in?
a. xanthogranulomatous cholecystitis
c. adenomyomatous polyps
d. cholesterol crystals
Ct index. true is?
a. by reducing kvp by 50% radiation dose is reduced to half