ARRT EXAM 2024 UPDATED QUESTIONS AND ANSWERS.

ARRT EXAM 2024 UPDATED QUESTIONS AND ANSWERS. When kVp is decreased from one exposure to the next while using automatic exposure control (AEC), which of following occur? 1. Exposure time is increased. 2. Patient dose is increased. 3. Image receptor exposure is increased. - CORRECT ANSWER-1. Exposure time is increased. 2. Patient dose is increased A whole-body dose of 0.25 Gy delivered within 72 hours will result in: - CORRECT ANSWER-hematopoietic depression Divergence of the space charge is prevented by the: - CORRECT ANSWER-focusing cup. In digital radiography, spatial resolution depends on: - CORRECT ANSWER-pixel size. A 35-year-old female patient is suspected of having right-sided pleural effusion. She is a trauma patient who is unable to stand. The ________ decubitus position of the ________ would be MOST helpful to demonstrate the effusion. - CORRECT ANSWER-right lateral; chest The ________ is the longest portion of the gastrointestinal (GI) tract. - CORRECT ANSWER-small intestine Which materials are used to make the filament? - CORRECT ANSWER-tungsten and thorium What semiconductor material is used in indirect flat panel imaging detectors? - CORRECT ANSWER-amorphous silicon A 68-year-old man is in the radiology department for chest radiography. He has been transported on a stretcher and has a urinary drainage bag hanging from the end of the stretcher. The patient feels well enough to sit on the stretcher for the examination. What should the radiographer do with the urinary drainage bag? - CORRECT ANSWER-Keep the drainage bag lower than the level of the patient's bladder throughout the examination. An image is acquired using 75 kVp with 3 active automatic exposure control (AEC) cells. A second image is acquired with 121 kVp with 3 active AEC cells. How will the receptor exposure differ between the images? - CORRECT ANSWER-Both images will have similar exposures. A 4-year-old boy is in the radiology department for wrist radiography. He is guarding his left wrist and points to the left carpal area when asked where it hurts. The requisition says "R wrist to r/o fx". The technologist should: 1. acquire images of the right wrist as ordered because children often are confused and scared in medical settings. 2. confirm with the patient and parent or guardian that the left wrist is the one that is injured. 3. call (or have someone call) the referring physician to verify which side should have radiography and amend the requisition if necessary. - CORRECT ANSWER-2. confirm with the patient and parent or guardian that the left wrist is the one that is injured. 3. call (or have someone call) the referring physician to verify which side should have radiography and amend the requisition if necessary A decrease in exposure time can increase image: - CORRECT ANSWER-spatial resolution. The radiation fog displayed on images is MOST likely caused by a ________ x-ray interaction. - CORRECT ANSWER-Compton What radiation measurement expresses the relative risk of a biological effect from ionizing radiation? - CORRECT ANSWER-absorbed dose Which of the following is classified as a type of diode? - CORRECT ANSWER-rectifier Which of the following is NOT a property of x-ray beams? - CORRECT ANSWER-can be focused For axiolateral and axiolateral oblique projections of the mandible, the head can be rotated to acquire images of different parts of the mandible. The potential regions of interest include the mandibular ramus, the mandibular body, and the mandibular symphysis. Regardless of the head position and region of interest, the central ray is angled _______________ direction. - CORRECT ANSWER25° in a cephalic ________ have the lowest radiosensitivity to ionizing radiation of the listed cells. - CORRECT ANSWER-Neurons Using a posteroanterior (PA) projection of the ribs with the patient in the anterior position in relation to the image receptor, the ________ part of the ribs is best displayed. - CORRECT ANSWERupper anterior Which of the following is NOT a means of sterilizing items or instruments that can be reused? - CORRECT ANSWER-freezing Why is it important for a technologist to ask a patient open-ended questions when obtaining patient history? - CORRECT ANSWER-Open-ended questions encourage the patient to further discuss issues of concern. The degree of body rotation when using the right anterior oblique (RAO) position for a barium swallow is: - CORRECT ANSWER-35° to 40°. For an AP axial projection of the cranium using the Towne method, the __