HESI EXIT EXAM (Newest and Updated Correct Questions and Answers 100% Excel A+ Graded)

HESI EXIT EXAM (Newest and Updated Correct Questions and Answers 100% Excel A+ Graded) Which change should be made when performing an abdomen radiograph on a patient with ascites? - CORRECT ANSWER-Raise exposure factors. Which system can store images? - CORRECT ANSWER-Picture archival and communication system (PACS). What is the result if pixel bit depth is decreased? - CORRECT ANSWER-Contrast resolution is decreased. Prior to performing a posteroanterior (PA) chest projection with automatic exposure control (AEC), the radiographer discovers that the patient has had a right total pneumonectomy. Which technical consideration should be considered? - CORRECT ANSWER-Selecting only the detector on the left side. Without changing any other factors, which effect is caused by decreasing the field size from 14X17 inches to 8X10 inches? - CORRECT ANSWER-Decrease in the amount of scatter radiation within the part. How often should lead aprons be evaluated to determine if cracks or holes are present? - CORRECT ANSWER-Annually. An increase in which factor will improve spatial resolution? - CORRECT ANSWER-Source to image receptor distance (SID). What is the most likely reason for the increase in quantum noise on a computed radiography (CR) image? - CORRECT ANSWER-Lower than required milliampere-seconds (mAs). Which information in the patient history should prompt the radiographer to decide against using automatic exposure controls when taking a chest x-ray? - CORRECT ANSWER-Emphysema. Which statement is true regarding exposure indicator and the evaluation of digital images? - CORRECT ANSWER-Exposure indicator must be reviewed with every image and must fall within the manufacturer's acceptable range. Which digital communication network is used to store patient billing information? - CORRECT ANSWER-HIS. Which digital post-processing results in a black background surrounding the original collimated edges? - CORRECT ANSWER-Shuttering. Which device temporarily stores an electric charge? - CORRECT ANSWER-Capacitor. What are recommended uses of the digital annotation tool? (Select the four that apply.) - CORRECT ANSWER-Entering technical factors Indicating date or time of the exam Labeling central ray (CR) projection Indicating radiographer performing the exam How does an increase in noise affect the quality of a digital image? - CORRECT ANSWER-Contrast is decreased. Which pathologic condition requires a reduction in exposure factors to produce an acceptable image? - CORRECT ANSWER-Emphysema. The radiographer is using automatic brightness control during fluoroscopy. What change in patient exposure should the radiographer expect as the patient size increases? - CORRECT ANSWER-Increase in exposure. Which calculation is used to determine grid ratio? - CORRECT ANSWER-Height of the lead strips divided by the width of the interspace material. Which is the most likely cause of a histogram error? - CORRECT ANSWER-Selection of an incorrect exam from the look-up table. Picture archiving and communication system (PACS) networks are capable of performing which functions? (Select the two that apply.) - CORRECT ANSWER-Transmitting diagnostic images to remote work stations. Downloading images from different imaging modalities. Who judges radiographic images for quality? (Select the four that apply.) - CORRECT ANSWER-Radiographers Ordering physicians Radiologists Quality control technologists How can magnification of the heart be reduced when performing a chest x-ray? - CORRECT ANSWER-Use a 72-inch source-image-receptor-distance (SID). What is the function of a rectifier? - CORRECT ANSWER-Convert alternating current to pulsating direct current. Which change in technical factors is most likely to result in decreased exposure to the image receptor (IR)? - CORRECT ANSWER-Increased grid ratio Which technique produces a 2 milliroentgens (mR) exposure to an image receptor plate if 70 kilovolts peak (kVp) at 25 milliampere-seconds (mAs) produces 1.6 mR? - CORRECT ANSWER-70 kVp at 31.25 mAs Consider this anteroposterior (AP) mobile chest image. What will improve the photographic quality of this image? - CORRECT ANSWER-Using a grid On which system does hospital staff input new orders for radiologic examinations? - CORRECT ANSWER-Hospital information system. Which part of the x-ray circuit is controlled by adjusting the milliamperage (mA) setting on the operating console for the purpose of producing the heat necessary for thermionic emission? - CORRECT ANSWER-Filament circuit Which standard governs communication between the system that contains the patient's full medical information and the system that has radiology-specific data? - CORRECT ANSWER-Health level 7 (HL-7). Why should computed radiography (CR) image receptors (IR) be erased if they haven't been used? - CORRECT ANSWER-Remove fog from background radiation. Which step will reduce digital image noise, assuming no other changes? - CORRECT ANSWER-Longer exposure time What is the term for the adjustment of image brightness, regardless of exposure received? - CORRECT ANSWER-Rescaling A radiographer is performing a forearm exam on a patient with advanced Parkinson's Disease. Which technical factor adjustments should be used? - CORRECT ANSWER-Decrease the exposure time to reduce risk of patient motion. What is the longest field size dimension allowable for 10 inches by 12 inches collimation at a 40 inch source to image distance (SID)? - CORRECT ANSWER-12.8 inches Which x-ray beam characteristic is reduced by adding aluminum filtration? - CORRECT ANSWER-Quantity of x-rays Which steps increase contrast in fluoroscopy? (Select the two that apply.) - CORRECT ANSWER-Reduce kilovolts peak (kVp) Use a smaller collimator field. X-ray machines are designed to operate at a specific and continuous supply voltage. Which part of the imaging system is responsible for keeping incoming voltage adjusted to the proper value? - CORRECT ANSWER-Line compensator.