By Bertram Pitt (auth.), Andrew J. Buda M.D., Edward J. Delp Ph.D. (eds.)

`Edited by way of a physician of medication and a physician of technology, this e-book has a multidisciplinary process that's aimed to be of curiosity to either medical professionals and scientists alike. it may entice either cardiologists and scientists who desire to replace themselves at the most modern advances within the many cardiac imaging innovations now available.'
Mark J. Monaghan

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The goal in nuclear medicine is to map the concentrations of the isotope after it has been injected into the patient and selective uptake or washout has begun. It is interesting to note that tissue attenuations which are the subject of mapping in angiography and conventional computed tomography are sources of error in nuclear medicine because they adversely affect estimates of source concentration within the patient. A single pinhole collimator may be used to create a focused image of the photon source distribution on the detector, but this technique suffers from poor collection efficiency.

Slice thickness and in-plane resolutions in SPECT are determined primarily by collimation and both resolution measures lie in the 10-25 mm range [12]. The duration of data collections is roughly proportional to the number of independent slices to be reconstructed. Cardiac gating is tyically implemented by list mode acquisition and increases even further the duration of the acquisiton period. Positron emission tomography (PET) in nuclear medicine is available only at larger research institutions or at sites located conveniently near synchrotrons.

Plenum Press, New York, 1982, pp 47-63. J r: Range- and azimuth-dependent variability of 17. Skorton OJ, Collins SM, Woskoff S, Melton HE Jr: quantitative texture measures in two-dimensional echocardiographic images. Ultrasonic Imaging 1982. (abstr) 4(2): 183, 183,1982. 18. Mimbs JW, Bouwens 0, Cohen RD, O'Donnell M, MilIerJG, Miller JG, Sobel BE: Effects of myocardial ischemia on quantitative ultrasonic backscatter and identification of responsible determinants. Circ Res 49: 89-96, 1981. 19. Madaras EI, Barzilai B, Perez JE, Sobel BE, Miller JG: Systematic variations of myocardial 1982.

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