Investigation of Choice

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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
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