Abstract
For many years the single-headed gamma camera has been the standard instrument for almost all nuclear medicine imaging procedures. It is unlikely that we shall see a fundamental change in gamma camera technology but improvements are being made continuously. Advances in the design and stability of the photomultiplier tubes, the uniformity of the detector, and energy and temporal resolution have together halved the intrinsic resolution of the device in the last decade. Coupled with a computer capable of rapid data acquisition, processing, and display, we have an excellent instrument for emission tomography. In the next decade we can expect further improvements. Cameras with multiple heads are already available to increase the speed of data acquisition. Such increases will either be used to decrease imaging time or to reduce the radiation burden to the patient. Whilst the problems of uniformity and precision of orbit increase exponentially with the number of heads, experience and high quality engineering are providing the solution. The characteristics of the collimator are also important and 6–12-fold increases in sensitivity can be obtained by optimising the design. Modern tomographic cameras have a system resolution of 5 mm to 6 mm.
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© 1992 Springer-Verlag London Limited
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Pennell, D.J., Underwood, S.R., Costa, D.C., Ell, P.J. (1992). The Future. In: Thallium Myocardial Perfusion Tomography in Clinical Cardiology. Springer, London. https://doi.org/10.1007/978-1-4471-1857-2_8
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DOI: https://doi.org/10.1007/978-1-4471-1857-2_8
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