ARRT registry exam graded A UPDATE NEW!!

ARRT registry exam graded A UPDATE NEW!! What is the correct term used to describe an intravenous injection of a concentrated volume of contrast media? a. bolus b. infusion c. extravasation d. luminal - Answer a. bolus Which of the following methods utilizes a detector that captures x-ray energy and converts it into an electronic signal? a. indirect capture b. CCD c. cassette based radiography d. direct capture - Answer d. direct capture The energy of a characteristic x-ray photon created when an L shell electron fills a K shell vacancy in a tungsten atom will have which of the following energies? a. 69.5 keV b. 57.5 keV c. 91.5 keV d. 12 keV - Answer b. 57.5 keV The energy of characteristic photons is determined by the difference in binding energies between the two electron shells involved in the process, which in this question are K and L shells. 69.5 (K shell) minus 12 (L shell) equals 57.5. Identify the position that will place the positive contrast agent in the body of the stomach and pyloris during a double contrast upper GI exam? a. recumbent LPO b. supine c. recumbent RPO d. prone - Answer d. prone which position/projection will best demonstrate the broad aspect of the frontal air sinus? - Answer PA Which position will best demonstrate the right axillary portion of the ribs? - Answer RPO Which position will emphasize the mucosal lining of the medial wall of the descending colon during a lower GI exam? - Answer left lateral decubitus Which projection of the wrist will best demonstrate the interspaces of the carpal bone? - Answer AP An image is acquired with computed radiography using which of the following methods? a. a cassette that is electronically charged b. conventional film/screen processing