ARRT registry

ARRT registry exam graded A UPDATE NEW!! What is the correct term used to describe an intravenous injection of a concentratedvolume 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 andconverts it into an electronic signal? a. indirect captureb. 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 Kshell 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 thestomach and pyloris during a double contrast upper GI exam? a. recumbent LPOb. supine c. recumbent RPO d. prone - Answer d. prone which position/projection will best demonstrate the broad aspect of the frontal airsinus? - Answer PA Which position will best demonstrate the right axillary portion of the ribs? - AnswerRPO Which position will emphasize the mucosal lining of the medial wall of thedescending colon during a lower GI exam? - Answer left lateral decubitus Which projection of the wrist will best demonstrate the interspaces of the carpalbone? - Answer AP An image is acquired with computed radiography using which of the followingmethods? a. a cassette that is electronically chargedb. conventional film/screen processing c. the use of a storage phosphor d. nonne of the above - Answer c. the use of a storage phosphor A transformer constructed with 10,00 primary turns and 2,500 secondary turns willyield an output voltage of when being supplied with 210 volts. a. 2710 volts b. 52.5 volts c. 840 volts d. 525 volts - Answer b. 52.5 volts Which of the following circuit components is considered to be the source for kVp?a. step-up transformer b. autotransformer c. step-down transformer d. high voltage transformer - Answer b. autotransformer Which of the following meds is administered to a patient during an allergic reaction?a. Adenocard b. Intropinc. Lasix d. Decadron - Answer d. Decadron If the improper body part is selected from the exam menu, which of the following mayresult? a. there will be no image b. there may be image misinterpretation c. will exhibit proper contrast and density d. image sharpness will not be affected - Answer b. there may be image misinterpretation Which of the following combinations are needed in digital radiography system toproduce an image? a. intensifying screen & TFTb. xray absorber & CCD c.. storage phosphor plate & CCD d. storage phosphor plate & TFT - Answer b. x-ray absorber & CCD Exposure latitude is also known as which of the following?a. dynamic range b. spatial resolutionc. subject contrast d. characteristic response - Answer a. dynamic range All of the following components are within the glass/metal enclosure of the x-ray tubeexcept... a. anode b. stators c. rotors