Ct Exam Review Questions Questions And Correct Answers | Latest Update

Indications for CT head (11) {Ans: -Stroke -TIA -Hemorrhage -Trauma -Acute neuro changes -Tumors -AVM -Thrombosis -Aneurysm -Headache/seizures -Mass/lesion /hearing loss}When are non-enhanced scans of the head performed? {Ans: For structural imaging of the brain and base of the skull}Window for bone of the spine {Ans: 2000WW/500WL}Patient position for CT elbow? {Ans: Prone, affected arm over head & extended; arm oblique}Which phase is the most useful for polyp detection? {Ans: Arterial (bolus) phase}Hepatic arterial phase is between ____-____ seconds {Ans: 15-25 seconds}t-PA must be administered within ___ hours of the first signs of stroke {Ans: 3 hours}What is the expected HU value of a measurement taken in the lateral ventricle? {Ans: 4-8}Start and stop for CT l-spine {Ans: Start: just above L1 Stop: just below S1 Include all l-spine vertebrae}What can form a embolus? {Ans: Blood, air, fat, tumor}When would using sodium phosphate for virtual colonoscopies be contraindicated? (5) {Ans: -Severe hypertension or cardiac disease. -Known renal failure or insulin-dependent diabetes -Pre-existing electrolyte abnormalities -Ascites -Ileus}Indications for a neck CT {Ans: -Bone (tumors, infection, trauma) -Soft Tissue (tumors, congenital defects, enlargement of glands, infection, abscess, vasculature)}What are the