IOC

INVESTIGATION OF CHOICE:
• Single Bone Metastasis – CT
• Multiple Bone Metastasis – Bone scan
• Spine Metastasis – MRI
• Avascular necrosis- MRI
• Bone Density/Osteoporosis- DEXA (Dual energy x ray absorptiometry)
• Aneurysm/ AV Fistula- Angiography
• Dissecting Aneurysm (Stable) - MRI (Unstable)-Trans oesophageal USG
• Pericardial Effusion- Echocardiography
• Lobulated pericardial effusion- MRI > CT
• Minimum Pericardial Effusion- Echocardiography 
• Ventricular Function- Echocardiography
• Radiotherapy/Chemotherapy induced cardiotoxicity- Endomyocardial Biopsy
• Pulmonary Embolism- CECT> Pulmonary Angiography > V/Q Scan
• Interstitial lung disease(Sarcoidosis)- HRCT
• Bronchiectasis- HRCT scan
• Solitary Pulmonary Nodule- High resolution CT (HRCT)
• Posterior Mediastinal Tumor- MRI
• Pancoast Tumor (Superior Sulcus Tumor) – MRI
• Minimum Ascites/Pericardial effusion/Pleural effusion – USG
• Traumatic Paraplegia- MRI
• Posterior Cranial Fossa – MRI
• Acute Haemorrhage- CT
• Chronic Haemorrhage- MRI
• Intracranial Space Occupying Lesion- MRI
• Primary brain tumour- contrast MRI (Gold standard however remains to be biopsy)
• Metastatic brain tumor- (Gadolinium) contrast enhanced MRI
• Temporal Bone-CT
• SAH Diagnosis- unenhanced CT
• SAH aetiology- 4 vessel MR Angiography > CT Angiography > DSA
• Nasopharyngeal angiofibroma- CECT scan
• Acoustic neuroma- Gadolinium DTPA enhanced MRI
• Obstetrics- USG
• Calcifications- CT
• Blunt abdominal Trauma- CT
• Acute Pancreatitis- CT
• GERD- pH manometer > endoscopy
• Dysphagia- Endoscopy
• Congenital hypertrophic pyloric stenosis- USG
• Extrahepatic biliary atresia- perioperative cholangiogram
• Obstructive Jaundice/GB Stones- USG
• Diverticulosis – barium enema
• Diverticulitis – CT scan
• Renal TB (early) – IVP (Late)- CT
• Posterior Urethral Valve- MCU
• Ureteric stone- non contrast CT
• Renal Artery Stenosis- Percutaneous Angiography
• Extraintestinal Amoebiasis- ELISA
• Discrete swelling(solitary nodule) of thyroid- FNAC