NMTCB CT Board Exam Questions and Answers with complete solution

CBF - cerebral blood flow 50-60 mL / 100 g / min CBV - cerebral blood volume 4-5 mL / 100 g platelet count - 140k-440k per uL of blood INR - International Normalized Ratio 0.8-1.2 PTT - partial thromboplastin time 25-35 seconds BUN - 7-25 mg / dL creatinine - 0.5-1.5 mg / dL GFR (men) - 70 +/- 14 GFR (women) - 60 +/- 10 PT - prothrombin time 12-15 seconds max IV contrast for a child shouldn't exceed - 3 mL / kg of body weightexcretion half-life of IV contrast - 1-2 hours barium sulfate concentration - 1-3% water-soluble oral contrast for abdomen/pelvis should contain ________% iodine - 2-5 high-osmolar contrast = _________ mOsm / kg of water - risk factors for contrast-induced nephrotoxicity (CIN) - diabetes myoloma cardiac disease advanced age hepatic contrast enhancement phases - arterial phase portal/hepatic venous phase equilibrium phase delayed phase arterial phase of hepatic contrast enhancement - 25-35 seconds hypervascular tumors portal/hepatic venous phase of hepatic contrast enhancement - 60-70 seconds hypovascular lesions & masses