HESI RAD V2 ACTUAL MIDTERM EXAM WITH COMPLETE VERIFIED QUESTIONS AND WELL ELABORATED ANSWERS (A NEW UPDATED VERSION) |ALREADY GRADED A+ LATEST UPDATE

HESI RAD V2 ACTUAL MIDTERM EXAM WITH COMPLETE
VERIFIED QUESTIONS AND WELL ELABORATED ANSWERS
(A NEW UPDATED VERSION) |ALREADY GRADED A+
LATEST UPDATE



Why is it important for the radiographer to observe the milliampere
seconds (mAs) readout at the end of each exposure when using
automatic exposure control (AEC)?


ANSWERS: This value may be used as a basis for calculating manual
techniques.

How does emphysema impact radiographic imaging of the chest?


ANSWERS: Emphysema is a destructive disease, meaning the chest
tissue is more radiolucent.


If computed radiography (CR) imaging plates (IP) haven't been
used, how often should they be erased?


ANSWERS: 48 hours.


In which way can the radiographer minimize motion due to peristalsis?


ANSWERS: Decrease exposure time.

,Which best describes anode heel effect?


ANSWERS: A phenomenon where x-ray intensity is greater under the
cathode.

Which will increase the appearance of noise in a digital image,
assuming only the named factor in each response is changed?


ANSWERS: Large matrix.


Which is the preferred method for indicating the correct anatomic
side on a radiographic image?


ANSWERS: Place a side marker directly on the image receptor (IR)
prior to exposure.

If a radiographer wanted to double image density without doubling
the patient's dose, which action should be taken?


ANSWERS: Increase kilovolts peak (kVp) by 15%


Which statement is correct regarding the relationship of patient dose
to exposure index (EI)?


ANSWERS: EI gives an approximation of the patient's dose.


What is a method of electronic display resolution quality control
testing?


ANSWERS: Society of Motion Picture and Television Engineers (SMPTE)
test pattern.

,A breathing technique is planned for a right anterior oblique (RAO)
sternum radiograph. The intended exposure is 50 milliampere-
seconds (mAs) at 75 kilovolts peak (kVp) at 100 centimeter source
to image receptor distance (SID). Which milliampere (mA) station is
preferred, assuming the
radiographer ensures exposure occurs during the act of inspiration?


ANSWERS: 50

How much compensation is needed for a change to a small focal
spot?


ANSWERS: None.

If all the bucky digital images from one radiographic room seem to
appear excessively noisy, what might the radiographer suspect?


ANSWERS: The automatic exposure control (AEC) is set at an
inappropriate speed class.


How can the contrast scale be modified on a digital image? (Select
the two that apply.)


ANSWERS: Alter the window
width. Collimate more
closely

, Which computed radiography (CR) or digital radiography (DR)
system produces images with the highest spatial resolution?


ANSWERS: Amorphous selenium - direct capture DR.


What could cause a computed radiography image with very
noticeable lines uniformly in the same direction over the entire
image? (Select the three that apply.)


ANSWERS: Grid used with grid frequency equal to the image reader's
laser scan lines. Noise resulting from the plate reader electronics.
Grid utilized with grid lines running parallel to the laser scan lines
of the image reader device.


Which description best defines a histogram?


ANSWERS: Graph where x-axis is the amount of exposure read, and the
y-axis is the number of pixels.


Which is one function of a picture archiving and communication
system (PACS) network?


ANSWERS: Downloading images from different imaging modalities.