investigation of choice---all MCQs

INVESTIGATION OF CHOICE(IOC) ......

1)for acoustic neuroma-----------------------gadolinium DTPA enhanced MRI
2)nasopharyngeal angiofibroma----------CECT scan
3)posterior fossa tumours------------------MRI
4)DVT--------------------------venous USG
5)pulmonary embolism-----------------CT chest with contrast
6)imaging of seminal vesicle and ejaculatory ducts------vasography > transrectal USG
7)extraintestinal amoebiasis--------ELISA
8)avascular necrosis--------------MRI
9)interstitial lung disease------HRCT scan
10)bronchiectasis------------HRCT scan
11)osteoporosis---------DEXA scan(dual energy x-ray absorptiometry)
12)acute ureteric colic--------non contrast spiral CT scan abdomen
13)renal TB early stage-----IVP
late stage------CTscan
14)localization of pheochromocytoma------MRI
15)acute dissection of aorta-----transoesophageal ECHO
16)chronic dissection of aorta(in stable patients)-----MRI
17)congenital hypertrophic pyloric stenosis------USG
18)extrahepatic biliary atresia-------peroperative cholangiogram
19)discrete swelling(solitary nodule) of thyroid-----FNAC
20)acute Subarachnoid haemorrhage(SAH)-----noncontrast CT HEAD
21)to localise site of bleed in SAH-----------4 vessel X-ray angiography