EDITORIAL Ready, shoot, aim? Summary justice for small hearts in nuclear cardiology a,b a Guido Germano, PhD, MBA, and Paul B. Kavanagh, MS Department of Medicine, Cedars-Sinai Medical Center, Artiﬁcial Intelligence in Medicine Program, Los Angeles David Geffen School of Medicine, UCLA, Los Angeles Received May 5, 2016; accepted May 5, 2016 doi:10.1007/s12350-016-0545-9 duration, and count statistics necessitate the use of See related article, pp. 1378–1388 blurring low-pass ﬁlters, resulting in maximum recov- erable reconstructed image resolutions rarely better than 10 to 15 mm FWHM (full-width half maximum) for SPECT, and as a consequence pixel sizes of less than 5 It may have happened to many of you to take a to 7 mm are rarely used in tomographic images. The blurry photograph—maybe the subject moved unpre- situation is typically better for PET, but not exceedingly dictably, or (as one of us has often experienced) the so for cardiac PET, particularly if using Rb-82 as a autofocus switch got dislodged as the camera was radioisotope. knocked around in the bag. If this was a mission-critical Suboptimal spatial resolution results in the well- picture, playing around with sharpening ﬁlters and ker- known partial volume effect, which hides small struc- nels
Journal of Nuclear Cardiology – Springer Journals
Published: May 20, 2016
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