1.
Myocardial ischemia could be distinguished from myocardial infarction by analysis of PET images of the perfusion tracer N-13-labeled ammonia and the glucose analogue FDG. Region with “flow-metabolism mismatch” – decreased flow with normal increased FDG activity – represents:
2.
The raw myocardial perfusion projection images are routinely evaluated for all of the following purposes EXCEPT:
3.
The short axis cardiac tomogram is displayed with the orientation as if the viewer was observing the heart from the:
4.
Atropine is an anticholinergic agent frequently used with dobutamine stress testing to increase:
5.
The sympathetic nervous system has great influence on cardiovascular physiology and is responsible for regulating myocardial blood flow, heart rate, and the contractile performance of the heart. Which of the following radiotracers can be used for imaging the sympathetic nervous system of the heart?
6.
If the time between two successive R points is 1 second, a beat length acceptance window of 100% allows accumulation of data from cardiac beats:
7.
The presence of a focal defect on rest images that was not seen on stress images, or the presence a focal defect on stress images that appears more severe on rest images is called:
8.
Which of the following arteries supplies the myocardium?
9.
Which of the following medications can be used as an adjunct to myocardial perfusion imaging (MPI) pharmacological stress testing?
10.
Attenuation artifacts of tomographic myocardial perfusion imaging may decrease the diagnostic accuracy of the technique, predominantly due to:
اضف تعليقا