Which of the following members of the Radiology Department is responsible
for ascertaining all radiation guidelines and employing radiation safety
measures? Answer - Radiation officer
Which of the following devices is used to control the reproducibility of images
regardless of tissue density variations? Answer - phototimer
Which of the following is the proper preparation for patient having lower
abdomen CT scan? Answer - Laxative 1 day before and NPO from midnight
Which of the following processes is responsible for creation of the radiographic
image? Answer - Differential absorption
A 19-year-old patient is referred to the Emergency Department to exclude
fracture in the occipital bone following a car accident. Which of the following is
the best projection to demonstrate this fracture? Answer - towne's view
Which of the following is the most likely cause for preference of erect position
in intravenous urography examination? Answer - Rule out nephroptosis
A patient is evaluated for brain tumour by a series of magnetic resonance
images. Contrast media is injected to demonstrate the extent of the lesion.
Which of the following pulse sequence will best demonstrate it? Answer - T1
weighted
, As a result of a medical error, a dose of 0.25 Gy is delivered to the fetus during
the early part of the first trimester of the pregnancy. Which of the following is
the most likely clinical adverse outcome? Answer - 1-2 weeks abortion
3-6 weeks skeletal anomalies
7-10 weeks (non specific) neurologic anomalies
Which of the following is the subsequent biologic effect resulting from acute
whole body exposure to 0.25 sievert? Answer - decreased lymphocytes
Which of the following projection gives the highest thyroid dose? Answer -
SMV skull
Which of the following is the primary reason to repeat radiographs? Answer -
poor communication between radiographer and patient
A 35-year- old woman with complaints of lower back pain is referred to the
Radiology Department. The physician suspects L5-S1 Spondylolisthesis. Which
of the following best diagnose this case? Answer - MR myelography
A body is placed 4 feet from a radiation source and received an exposure rate
of 20 R/h. Which of the following is the distance required for the exposure rate
of 5 R/h? Answer - using inverse square law " I1/I2 = (D2)2/(D1)2
20/5=x2/16=64=√(64=8ft'
A 55-year-old man patient is referred to Radiology Department for IVU
examination. He has brought lab reports (see lab results). Test Results Normal
Values Blood urea nitrogen 8.92 2.8-8.9 mmol/L Creatinine 177 44-115 μmol/L
Which of the following is the appropriate step to take? Answer - both urea and
creatinine are high; Consult the referring doctor
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