Nuclear cardiology bulletsThe “hurricane sign”: Evidence of patient motion artifact on cardiac single-photon emission computed tomographic imaging
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Interesting Signs in Nuclear Medicine
2015, Seminars in Nuclear MedicineCitation Excerpt :In this article, we have collated nuclear medicine signs 1-151 system wise, as reported in the literature (Tables 1-9 and Figs. 1-24).
Pitfalls and limitations of radionuclide and hybrid cardiac imaging
2015, Seminars in Nuclear MedicineCitation Excerpt :Motion artifact is often magnified by 2-headed cameras as there can be an abrupt shift in cardiac position between the last image of one head and the first image of the second head, as the images, although acquired with a relatively large time interval in between, are arranged in sequence in the unprocessed acquisition images. One characteristic sign of patient motion is the presence of distorted images with “tails” at the 12-o’clock and 6-o’clock positions on the short-axis slices, sometimes referred to as the “hurricane” sign as the image resembles the National Weather Service’s symbol for a hurricane, shown in Figure 4.51,52 Another potential source of acquisition-related error is cardiac image corruption by adjacent subdiaphragmatic activity.
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2008, Revista Espanola de Cardiologia SuplementosOptimal SPECT processing and display: Making bad studies look good to get the right answer
2006, Journal of Nuclear CardiologyCitation Excerpt :Motion may cause the following image artifacts on the reconstructed images: “hurricane sign,” distorted ventricular shape, and discontinuity of the ventricular walls. The hurricane sign8—in which the left ventricle in the short-axis views resembles the National Weather Service symbol for a hurricane—is caused by motion-induced smearing of photon counts in opposing directions around the left ventricle. Distortion of the ventricle so that the heart appears elongated or tilted, discontinuities of the left ventricular (LV) walls at the apex, nonanatomic defects, 12- and 6-o’clock defects, and hot spots are other characteristic patterns of motion artifacts.
Effect of motion on cardiac SPECT imaging: Recognition and motion correction
2001, Journal of Nuclear CardiologyUse of rotating (cine) planar projection images in the interpretation of a tomographic myocardial perfusion study
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