• The glass envelope of the x-ray tube is most commonly composed of?
A. Oil
B. Lead
C. Tungsten
D. Pyrex: D. Pyrex
• Which of the following are characteristic of the filaments within the tube:
1.Coated with tungsten
2.High-melting point
3.Withstand high-heat
4.low-atomic number
A. 1 and 2
B. 2 and 3
C. 1, 2, and 3
D. All listed: C. 1, 2, and 3
• Select the characteristics of a rotating anode:
1.A thin surface area
2.The ability to handle a high mA settings
3.The ability to handle short exposure times
4.Increases the life of the filaments
A. 1 only
B. 2 only
C. 1 and 2
D. All of the above: B. 2 only
• The anode heel effect is defined as:
A. Overheating of the anode due to uneven absorption of electrons.
B. A radiographic phenomenon affecting the intensity of the x-ray beam.
C. The production of x-ray photons after incident electrons strike the anodetarget.: B. A
radiographic phenomenon affecting the intensity of the x-ray beam.
• The anode heel effect is defined as a radiographic phenomenon in which the intensity of
the x-ray beam is increased towards the anode side of the x-raytube.
A. 1 only
B. 1 and 2
C. 2 and 3
D. 1, 2, and 3: B. 1 and 2
• When performing a KUB or lumbar spine radiograph, the anode heel effectcan be used to
improve image quality by positioning the patient:
A. With the lower abdomen placed under the anode side of the x-ray tube.
B. With the upper abdomen placed under the cathode side of the x-ray tube.
C. With the lower abdomen placed under the cathode side of the x-ray tube.: C.With the lower
abdomen placed under the cathode side of the x-ray tube.
• The relationship between SID and the anode heel effect is defined as:
A. Direct relationship
B. Indirect relationship
C. No relationship between SID and the anode heel effect: B. Indirect relationship
• Which of the following source-to-image distances will result in the LEASTamount of
anode heel effect?
A. 30" SID
B. 40" SID
C. 60" SID: C. 60" SID
• Increasing the imaging field size results in:
A. Decreased anode heel effect.
B. Increased anode heel effect.: B. Increased anode heel effect.
, • Which of the following describes the effect of decreasing the anode angle:
1. Decreased ability of the anode to absorb heat
2. Increased anode heel effect
3. Increased spatial resolution
A. 1 only
B. 2 only
C. 1 and 2
D. 1, 2, and 3: D. 1, 2, and 3
• The anode heel effect causes:
1. A variation of the beam's intensity across the x-ray field.
2. A greater intensity of x-ray photons on the anode side of the beam
3. A greater intensity of x-ray photons on the cathode side of the beam.
A. 1 only
B. 2 only
C. 1 and 2
D. 1 and 3: D. 1 and 3
• Increasing the anode angle has what effect on spatial resolution?
A. Decreased spatial resolution
B. Increased spatial resolution
C. No effect: A. Decreased spatial resolution
• Select the SID that results in the smallest anode heel effect.
A. 40" SID
B. 80" SID
C. 32" SID
D. 72" SID: B. 80" SID
• Which of the following describes the efficiency of x-ray photon production?
A. High efficiency
B. Low efficiency: B. Low efficiency
• What is the name of the area on the anode angle on which x-ray photonsare produced?
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