HESI RADIOGRAPHY PRACTICE TEST 1 & 2 With Rationale

HESI RADIOGRAPHY PRACTICE TEST 1 & 2 With Rationale

Which digital communication network is used to store patient billing information?
a. RIS.
b. HR.
c. PACS.
d. HIS. - d. HIS.
The HIS, which stands for health information system, is used to store all patient
data that is relative to billing and demographic information. The RIS is the
radiology information system and includes information about the patient's
radiology exams and data relevant to them. PACS, which stands for picture
archival and communication system, is used to store images. HR stands for
human resources and is a department located in the hospital that handles all
employee information.
Which grid ratio results in the lowest dose to a patient, because less milliampereseconds (mAs) is required?
a. 12:1.
b. 16:1.
c. 8:1.
d. 5:1 - d. 5:1
A 5:1 grid ratio provides less exposure to the patient than higher grid ratios due to
higher lead content. Grid selection always involves a trade-off between obtaining
an optimal image and exposure to the patient. Higher ratio grids improve image
contrast at the expense of increased patient dose.
What does "ventricular fibrillation" mean?
a. Erratically quivering ventricles.
b. Slow heart rate.
c. Rapid heart rate.
d. Premature ventricular contractions. - a. Erratically quivering ventricles.
Ventricular fibrillation means that the ventricles are quivering which results in the
heart's inability to pump blood. If the heart is beating too slowly, the patient is
suffering from bradycardia. On the other hand, if the heart is beating too quickly,
the patient has tachycardia. Premature ventricular contractions (PVCs) are extra
beats that do not contribute to the blood flow, but this is not generally a lifethreatening rhythm.
How should the radiographer position the patient to best demonstrate a left
axillary 6th rib fracture?
a. Supine and 45 degree left posterior oblique (LPO).
b. Upright posteroanterior (PA).
c. Upright and 45 degree left posterior oblique (LPO).
d. Prone. - c. Upright and 45 degree left posterior oblique (LPO).
To best visualize a left axillary 6th rib fracture, the radiographer should place the
patient in an upright and 45 degree LPO position. Prone or Supine and 45 degree
LPO would be used to visualize ribs below the diaphragm (generally the 9th-12th
ribs). An upright PA is used to visualize the anterior upper ribs.
What is the term for a reduction in x-ray photon intensity as it passes through the
patient?
a. Absorption.
b. Divergence.
c. Scattering.
d. Attenuation -d. Attenuation
The reduction in intensity of the xray beam as it passes through matter is
attenuation. Absorption occurs when the photon interacts with matter and
disappears. Scattering is when there is a partial transfer of energy to matter.
Divergence refers to the x-ray beam spreading out as it travels away from the xray tube.
A posteroanterior (PA) chest radiograph demonstrates the left clavicle closer to
the center of the spine than the right clavicle. Which action should the
radiographer take?
a. Turn left side closer to image receptor (IR).
b. Accept the image.
c. Roll shoulders forward.
d. Turn right side closer to image receptor (IR). - d. Turn right side closer to
image receptor (IR).
The patient is in a slight left anterior oblique (LAO) position, so the right side
should be rotated closer to the IR. This image should not be accepted, because
rotation is present. Rolling the shoulders forward will move the scapulae out of
the lung field, but will not change rotation. Turning the left side closer to the IR will
increase the patient's obliquity.
What is the angle formed by the intervertebral foramina and the midsagittal plane
in the thoracic spine?
a.70 degrees.
b. 15 degrees.
c. 90 degrees.
d. 45 degree - c. 90 degrees.