Body contouring or elliptical orbits in SPECT imaging have an advantage over circular orbits because they

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Body-contour orbits seek to keep the camera as close to the body as possible throughout the tomographic acquisition, thereby maximizing resolution.The radius is changed angle-by-angle to minimize the distance while maintaining the same angles used in a circular orbit.The simplest body-contour orbits assume the shape of an ellipse, although some manufacturers offer sophisticated sensors that minimize the camera-to-body distance in real time at each angle.

Body Contouring or Elliptical Orbits in SPECT Imaging Have an Advantage