Which of the following structures is located in the mediastinum?
A) right middle lobe and esophagus
B) left upper lobe and heart
C) aorta and thyroid
D) trachea and thymus - ️️D) trachea and thymus
Which of the following technical factors simultaneously affects overall image quality and ra...
All of the following affect the spatial resolution of an image EXCEPT FOR:
A) kVp.
B) part size.
C) tube angle.
D) SID. - ✔ ✔ A) kVp
All of the following are within acceptable kVp accuracy variance for an exposure using 80 kVp EXCEPT
FOR ________ kVp.
A) 86
B) 84
C) 82
D) 76 - ✔ ✔ A) 86
All of the following EXCEPT ________ will result in an increase in AEC response time.
A) decreasing the kVp
B) increasing the focal spot size
C) increasing the part thickness
D) increasing the source-to-image distance (SID) - ✔ ✔ B) increasing the focal spot size
An acceptable PA chest exam is taken using 300 mA, 0.008 seconds, and 110 kVp. If this examination is
repeated using an AEC that has a minimum response time of 10 ms, which of the following exposure
factors would be appropriate?
, A) 400 mA, 0.006 seconds, 110 kVp
B) 200 mA, 0.012 seconds, 110 kVp
C) 600 mA, 0.004 seconds, 110 kVp
D) All of the above would be appropriate. - ✔ ✔ B) 200 mA, 0.012 seconds, 110 kVp
An image that has many shades of gray with few differences among them is defined as exhibiting:
A) high spatial resolution.
B) low contrast.
C) high dynamic range.
D) low bit depth. - ✔ ✔ B) low contrast
Children have epiphyseal plates made of ________ that can be evaluated as part of normal chronologic
age for bone age analysis.
A) fibrocartilage
B) elastic cartilage
C) hyaline cartilage
D) osteogenic cartilage - ✔ ✔ C) hyaline cartilage
Combining 2 hydroxyl radicals (OH*) will form:
A) H2O+.
B) H2O2.
C) H3O.
D) H2O3+. - ✔ ✔ B) H202
Decreasing the detector element size will affect which of the following?
A) bit depth
B) spatial resolution
C) dynamic range
D) signal-to-noise ratio - ✔ ✔ B) spatial resolution
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