Mosby's NBDHE Exam Tested Questions With Revised Correct Detailed Answers With Detailed Images Latest Update

Mosby's NBDHE Exam Tested Questions With Revised Correct Detailed Answers With Detailed Images Latest Update 1. This image of the abdomen was most likely acquired in which of the following renal enhancement phases? A. Pre-contrast B. Corticomedullary C. Nephrographic D. Excretory C. Nephrographic The nephrographic phase occurs between 70 and 90 seconds after the start of injection. Enhancement between renal cortex and medulla reaches equilibrium, providing optimal sensitivity for parenchymal lesions. 2. Number 1 corresponds to which of the following? A. Renal artery B. Hepatic vein C. Superior mesenteric artery D. Celiac trunk C. Superior mesenteric artery 3. Which of the following would best describe the position of the patient during data acquisition? A. Supine B. Prone C. Right lateral decubitus D. Left lateral decubitus A. Supine The obvious air-fluid level in the transverse colon (5) indicates that the patient was imaged in the supine position. 4. Number 3 corresponds to which of the following? A. Renal artery B. Hepatic vein C. Superior mesenteric artery D. Celiac trunk D. Celiac trunk 5. Number 2 corresponds to which of the following? A. Spleen B. Liver C. Kidney D. Pancreas B. Liver 6. Assuming a bolus injection of iodinated contrast agent at a rate of at least 4 mL/sec, an appropriate scan delay for a CTA examination of the mesenteric vasculature would be in the range of: A. 5 to 8 seconds. B. 20 to 30 seconds. C. 45 to 60 seconds. D. 70 to 90 seconds. B. 20 to 30 seconds. Dual-phase imaging including the arterial phase (20 to 30 seconds) and portal venous phase (60 to 70 seconds) is typically performed for complete evaluation of the mesenteric vasculature. The use of bolus-tracking software or test bolus technique is recommended to ensure appropriate scan timing. 7. An IV contrast enhanced specialized CT evaluation of the small bowel after the oral administration of a low-density (0.1%) barium sulfate solution is termed: A. CT enteroclysis. B. CT colonography. C. CT enterography. D. CT colonoscopy. C. CT enterography. CT enterography does not involve contrast agent administration through a nasogastric tube and is therefore less invasive than CT enteroclysis. 8. During CT colonography examinations, tagged fecal matter appears __________ on the image. A. black B. gray C. white D. noisy C. white Dual-agent tagging involves the oral administration of both barium and water soluble iodinated contrast agent. The barium tags residual stool and coats the surface of polyps. The iodine contrast tags residual fluid. Tagged fluid and fecal matter exhibit high CT density and appear white on the CTC image. Tagging allows for differentiation of polyp from fecal matter and improves the visualization of polyps that may be surrounded by residual fluid. 9. The oral administration of barium and iodinated contrast media prior to CT colonography serves the primary purpose of: A. lesion enhancement. B. insufflation. C. catharsis. D. polyp tagging. D. polyp tagging. Dual-agent tagging involves the oral administration of both barium and water soluble iodinated contrast. The barium tags residual stool and coats the surface of polyps. The iodine contrast tags residual fluid. Tagged fluid and fecal matter exhibit high CT density and appear "white" on the CTC image. Tagging allows for differentiation of polyp from fecal matter and improves the visualization of polyps that may be surrounded by residual fluid. 10. Which of the following contrast agents may be used for the purpose of colon insufflation during a CT colonography examination? 1. Room air 2. CO2 3. Normal (0.9%) saline A. 1 only B. 1 and 2 only C. 2 and 3 only D. 1, 2, and 3 B. 1 and 2 only 1. Room air 2. CO2