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HESI EXIT EXAM FOR 2024 AND 2023 COMBINED MATERIAL
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HESI EXIT EXAM FOR 2024 AND 2023 COMBINED MATERIAL
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HESI EXIT EXAM FOR 2024 AND 2023 COMBINED MATERIALSWhich change should be made when performing an abdomen radiograph on a patient with ascites? -
ANSWER-Raise exposure factors.
Which system can store images? - ANSWER-Picture archival and communication system (PACS).
What is the result if pixel bit depth is decreased? - 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? - 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? - 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? - ANSWER-
Annually.
An increase in which factor will improve spatial resolution? - 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? - 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? - ANSWER-Emphysema.
Which statement is true regarding exposure indicator and the evaluation of digital images? - 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? - ANSWER-HIS.
,Which digital post-processing results in a black background surrounding the original collimated edges? -
ANSWER-Shuttering.
Which device temporarily stores an electric charge? - ANSWER-Capacitor.
What are recommended uses of the digital annotation tool? (Select the four that apply.) - 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? - ANSWER-Contrast is decreased.
Which pathologic condition requires a reduction in exposure factors to produce an acceptable image? -
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? - ANSWER-Increase in exposure.
Which calculation is used to determine grid ratio? - ANSWER-Height of the lead strips divided by the
width of the interspace material.
Which is the most likely cause of a histogram error? - 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.) - 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.) - ANSWER-Radiographers
,Ordering physicians
Radiologists
Quality control technologists
How can magnification of the heart be reduced when performing a chest x-ray? - ANSWER-Use a 72-inch
source-image-receptor-distance (SID).
What is the function of a rectifier? - 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)? - 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? - ANSWER-70 kVp at 31.25 mAs
Consider this anteroposterior (AP) mobile chest image. What will improve the photographic quality of
this image? - ANSWER-Using a grid
On which system does hospital staff input new orders for radiologic examinations? - 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? - 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? - ANSWER-Health level 7 (HL-7).
Why should computed radiography (CR) image receptors (IR) be erased if they haven't been used? -
ANSWER-Remove fog from background radiation.
Which step will reduce digital image noise, assuming no other changes? - ANSWER-Longer exposure time
, What is the term for the adjustment of image brightness, regardless of exposure received? - ANSWER-
Rescaling
A radiographer is performing a forearm exam on a patient with advanced Parkinson's Disease. Which
technical factor adjustments should be used? - 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)? - ANSWER-12.8 inches
Which x-ray beam characteristic is reduced by adding aluminum filtration? - ANSWER-Quantity of x-rays
Which steps increase contrast in fluoroscopy? (Select the two that apply.) - 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? - ANSWER-Line
compensator.
How does the Density log Exposure (D log E) curve appear for a digital imaging receptor (IR)? - ANSWER-
A straight line at a 45 degree angle.
Why should a radiographer routinely use a small focal spot when imaging extremities? - ANSWER-
Increase in spatial resolution.
Place these bit depths in order from the one that will produce the least number of grays to the one that
will produce the greatest number of grays. - ANSWER-8.
10.
12.
14.
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