What is being evaluated with chromatography testing of technetium radiopharmaceuticals?
- ANSWER Radiochemical purity
The use of elliptical and/or body contour orbits in SPECT imaging should result in improved: -
ANSWER Spatial resolution
Which of the following variables does not affect spatial resolution in nuclear medicine imag-
ing systems? - ANSWER Byte vs. word acquisition mode
Full width at half maximum (FWHM) is often used as a measure of: - ANSWER Resolution
Uncorrected flood field nonuniformities cause _____ artifacts in tomographic reconstruc-
tion. - ANSWER Circular
How many 16-bit words of memory are required for a 64 x 64 byte mode image? - AN-
SWER 2048
What are areas of prolonged retention of Xe-133 in the lungs associated with? - ANSWER
Obstructive pulmonary disease
A patient is to undergo a multiple-gated cardiac blood-pool study with the heart cycle di-
vided in 20 frames. The patient is in normal sinus rhythm and has a heart rate of 68 bpm.
The computer should lock in at what time per frame for this study? - ANSWER 44 milli-
seconds
Which of the following myocardial perfusion patterns suggest that the patient has myocar-
dial ischemia? - ANSWER Normal resting Tl-201, Abnormal Stress Tl-201
1
- ANSWER Radiochemical purity
The use of elliptical and/or body contour orbits in SPECT imaging should result in improved: -
ANSWER Spatial resolution
Which of the following variables does not affect spatial resolution in nuclear medicine imag-
ing systems? - ANSWER Byte vs. word acquisition mode
Full width at half maximum (FWHM) is often used as a measure of: - ANSWER Resolution
Uncorrected flood field nonuniformities cause _____ artifacts in tomographic reconstruc-
tion. - ANSWER Circular
How many 16-bit words of memory are required for a 64 x 64 byte mode image? - AN-
SWER 2048
What are areas of prolonged retention of Xe-133 in the lungs associated with? - ANSWER
Obstructive pulmonary disease
A patient is to undergo a multiple-gated cardiac blood-pool study with the heart cycle di-
vided in 20 frames. The patient is in normal sinus rhythm and has a heart rate of 68 bpm.
The computer should lock in at what time per frame for this study? - ANSWER 44 milli-
seconds
Which of the following myocardial perfusion patterns suggest that the patient has myocar-
dial ischemia? - ANSWER Normal resting Tl-201, Abnormal Stress Tl-201
1
