By Gary Heller, April Mann, Robert Hendel
A designated evaluate of the recommendations utilized in nuclear cardiology
This well-illustrated advisor deals a accomplished examine the foundations and methods in the back of myocardial perfusion imaging, together with instrumentation and cameras, normal concerns, radiopharmaceuticals, and radiation security and regulatory issues.
Whether you're a health professional or technologist, a resident or fellow in education, or are getting ready for the Cardiology Board examination, Nuclear Cardiology: Technical purposes is the simplest solution to research the $64000 technical elements of appearing exact nuclear cardiology and cardiac CT studies.
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Extra info for Nuclear Cardiology: Technical Applications
Example text
COR errors can be difficult to identify in clinical images, especially with multiple readers in a busy practice potentially unaware of consecutive similar image defects. It should be noted that dual detector systems typically have a separate COR calibration for images acquired with the detectors at 90 and 180 degrees. Verification of both configurations may be necessary depending on imaging studies performed. 22 SECTION 1 r C A M E R A A N D I N S T R U M E N TAT I O N Quarterly Figure 1-27. The solid rays represent the correct center location of a point source.
CHAPTER 1 r S P E C T I N S T R U M E N TAT I O N 13 Figure 1-15. Ideal count profile of a uniform sheet source and frequency spectrum components post Fourier transformation. with a vertical increase in activity at the edge. The count profile would be horizontal across the main body sheet source, with a vertical drop to no activity at the edge of the source. Fourier transformation of the data yields specific frequencies of the data (Figure 1-15). The majority of an image object is comprised of low-frequency data.
These results should be used in obtaining corrective action for any system deficiencies. Daily quality control should be performed and reviewed prior to clinical use. Most vendors recommend intrinsically peaking the camera as the first step in daily quality control. Peaking verifies that the correct energy window will be used for optimal photon detection. An off-peak system will result in low-resolution images with a high percentage of scatter and/or noisy count poor data. Vendor procedures must be followed when peaking the camera.