ASRT Exam 8
The inferior and posterior portion of the calcaneus to which the Achilles tendon attaches
is named the:
1. calcaneal tuberosity
2. sustentaculum tali
3. trochlea
4. calcaneal sulcus - answer calcaneal tuberosity
(The Achilles tendon attaches to the calcaneal tuberosity. The tuberosity is a knob-
shaped, roughened surface that the Achilles, or calcaneal, tendon attaches to.)
The minimum lead equivalent for lead aprons used during fluoroscopy is:
1. 0.25 mm.
2. 0.50 mm.
3. 0.75 mm.
4. 1 mm. - answer0.50
(The minimum lead equivalent for lead aprons used in fluoroscopy is 0.50 mm.)
What structures create the carpal tunnel?
1. carpal bridge and flexor retinaculum
2. carpal bridge and extensor retinaculum
3. carpal sulcus and flexor retinaculum
4. carpal sulcus and extensor retinaculum - answerCarpal sulcus and flexor retinaculum
(The passageway between the carpal sulcus and the flexor retinaculum creates the
carpal tunnel through which the median nerve and flexor tendons of the fingers pass.)
Increased quantum mottle results in a decrease in:
1. Spatial resolution.
2. Scatter radiation production.
3. Signal-to-noise ratio.
4. Occupational exposure. - answerSignal-to-noise ratio
(Signal-to-noise ratio (S/N) is a measurement of the amount of noise present in a digital
image. Noise can be caused by the imaging equipment (electrical system noise) or by
radiographic technical factors (quantum mottle). An image with little noise present will
have a high S/N.)
The proximal tibiofibular joint is classified as a ________________ joint.
1. fibrous pivot
2. synovial ellipsoid
3. fibrous syndesmosis
4. synovial gliding - answerSynovial gliding
, (The proximal tibiofibular joint is a synovial gliding joint that is freely movable. The distal
tibiofibular joint is a syndesmosis type of fibrous joint that is immovable or slightly
movable.)
The ________ vein is MOST pronounced and superficial on the radial side of the dorsal
aspect of the wrist when a tourniquet is applied.
1. median cubital
2. ulnar
3. radial
4. cephalic - answerCephalic
(The cephalic vein can be used for venipuncture. The median cubital vein is not in the
antecubital space. The ulnar vein is on the opposite side of the radial side. The radial
vein is a much deeper vein that courses closer to the middle of the forearm.)
________ BEST measures the threshold occurrence of deterministic effects.
1. Absorbed dose
2. Equivalent dose
3. Effective dose
4. Exposure - answerAbsorbed dose
(Deterministic biological effects appear after a large dose of radiation in a specific
amount. Absorbed dose is used to measure large amounts of radiation deposited into
tissue.)
Which of the following foot projections would demonstrate the cuboid with the LEAST
amount of superimposition?
1. lateral
2. AP
3. AP oblique with lateral rotation
4. AP oblique with medial rotation - answerAP oblique with medial rotation
(An AP oblique projection with medial rotation would demonstrate the cuboid with the
least amount of superimposition. The lateral projection produces an image with other
structures superimposing the cuboid. The AP projection will not demonstrate the
interspaces surrounding the cuboid as well as the AP oblique with medial rotation. The
AP oblique projection with lateral rotation demonstrates the interspaces surrounding the
medial and intermediate cuneiforms, but not the cuboid.)
For an AP axial projection of the sacroiliac joints, the central ray is angled ________ in
a ________ direction.
1. 10°; caudad
2. 15°; cephalad
3. 15° to 20°; cephalad
4. 30° to 35°; cephalad - answer30° to 35°; cephalad
(An angle of 30° to 35° cephalad places the central ray nearly perpendicular to the
obliquity of the sacroiliac joints.)
The postvoid image is acquired as part of the excretory urogram to:
The inferior and posterior portion of the calcaneus to which the Achilles tendon attaches
is named the:
1. calcaneal tuberosity
2. sustentaculum tali
3. trochlea
4. calcaneal sulcus - answer calcaneal tuberosity
(The Achilles tendon attaches to the calcaneal tuberosity. The tuberosity is a knob-
shaped, roughened surface that the Achilles, or calcaneal, tendon attaches to.)
The minimum lead equivalent for lead aprons used during fluoroscopy is:
1. 0.25 mm.
2. 0.50 mm.
3. 0.75 mm.
4. 1 mm. - answer0.50
(The minimum lead equivalent for lead aprons used in fluoroscopy is 0.50 mm.)
What structures create the carpal tunnel?
1. carpal bridge and flexor retinaculum
2. carpal bridge and extensor retinaculum
3. carpal sulcus and flexor retinaculum
4. carpal sulcus and extensor retinaculum - answerCarpal sulcus and flexor retinaculum
(The passageway between the carpal sulcus and the flexor retinaculum creates the
carpal tunnel through which the median nerve and flexor tendons of the fingers pass.)
Increased quantum mottle results in a decrease in:
1. Spatial resolution.
2. Scatter radiation production.
3. Signal-to-noise ratio.
4. Occupational exposure. - answerSignal-to-noise ratio
(Signal-to-noise ratio (S/N) is a measurement of the amount of noise present in a digital
image. Noise can be caused by the imaging equipment (electrical system noise) or by
radiographic technical factors (quantum mottle). An image with little noise present will
have a high S/N.)
The proximal tibiofibular joint is classified as a ________________ joint.
1. fibrous pivot
2. synovial ellipsoid
3. fibrous syndesmosis
4. synovial gliding - answerSynovial gliding
, (The proximal tibiofibular joint is a synovial gliding joint that is freely movable. The distal
tibiofibular joint is a syndesmosis type of fibrous joint that is immovable or slightly
movable.)
The ________ vein is MOST pronounced and superficial on the radial side of the dorsal
aspect of the wrist when a tourniquet is applied.
1. median cubital
2. ulnar
3. radial
4. cephalic - answerCephalic
(The cephalic vein can be used for venipuncture. The median cubital vein is not in the
antecubital space. The ulnar vein is on the opposite side of the radial side. The radial
vein is a much deeper vein that courses closer to the middle of the forearm.)
________ BEST measures the threshold occurrence of deterministic effects.
1. Absorbed dose
2. Equivalent dose
3. Effective dose
4. Exposure - answerAbsorbed dose
(Deterministic biological effects appear after a large dose of radiation in a specific
amount. Absorbed dose is used to measure large amounts of radiation deposited into
tissue.)
Which of the following foot projections would demonstrate the cuboid with the LEAST
amount of superimposition?
1. lateral
2. AP
3. AP oblique with lateral rotation
4. AP oblique with medial rotation - answerAP oblique with medial rotation
(An AP oblique projection with medial rotation would demonstrate the cuboid with the
least amount of superimposition. The lateral projection produces an image with other
structures superimposing the cuboid. The AP projection will not demonstrate the
interspaces surrounding the cuboid as well as the AP oblique with medial rotation. The
AP oblique projection with lateral rotation demonstrates the interspaces surrounding the
medial and intermediate cuneiforms, but not the cuboid.)
For an AP axial projection of the sacroiliac joints, the central ray is angled ________ in
a ________ direction.
1. 10°; caudad
2. 15°; cephalad
3. 15° to 20°; cephalad
4. 30° to 35°; cephalad - answer30° to 35°; cephalad
(An angle of 30° to 35° cephalad places the central ray nearly perpendicular to the
obliquity of the sacroiliac joints.)
The postvoid image is acquired as part of the excretory urogram to:
