Digital Radiography: Selected Topics by B. A. Arnold, J. G. Kereiakes, S. R. Thomas (auth.), James

By B. A. Arnold, J. G. Kereiakes, S. R. Thomas (auth.), James G. Kereiakes, Stephen R. Thomas, Colin G. Orton (eds.)

Digital radiography is a common time period describing any projection radiological process during which the picture exists in electronic shape at a few degree among acquisition and viewing. In an prior shape, radiographic movies have been dig­ itized in an try and improve and redisplay details of curiosity. the sphere has developed to its present country, within which X-ray signs are detected electronically, switched over to electronic shape, and processed ahead of being recorded and displayed. a main target of electronic radiography is the re­ moval of interfering results from secondary buildings in a picture, in order that clinically major information might be displayed with greater visibility. The fulfillment of this target contains many parameters, together with con­ trast brokers, subtraction thoughts, processing recommendations, filtering tech­ niques, procedure noise, and quantitative points. it's the function of this e-book to give fabric via famous participants within the box masking a number of of the above subject matters. The authors recognize the secretarial and editorial assistance of Mrs. Helen Taylor and the editorial assistance of Mrs. Ruth McDevitt. James G. Kereiakes Stephen R. Thomas Cincinnati, Ohio Colin G. Orton Detroit, Michigan ix Contents 1. electronic RADIOGRAPHY: evaluate B. A. Arnold, 1. G. Kereiakes, and S. R. Thomas 1. advent . . . . . . . . . 1 2. Point-Scanned Detector structures three three. Line-Scanned Detector platforms four four. quarter Detector platforms five 4.1. Stimulable Phosphors five 4.2. Selenium Detectors .

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The logical next step is the storage of image data in a semiconductor memory with dual-port access to the input-output system and to the computer. (37) This concept will probably become economically attractive even for angiocardiography with its large storage requirements when mass production of dynamic semiconductor memories reaches the Mbit/chip limit. 21 IMAGE PROCESSORS FOR DIGrrAL ANGIOGRAPHY The principal problem of all of these systems is the limitation of the speed of data processing inherent in conventional single-CPU sequential computers.

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52. 53. 33 and E. H. Wood, A real-time hardware system for digital processing of wide-band video images, IEEE Trans. Comput. 25, 1089-1100 (1976). P. Mengers, Real-time digital image processing for radiological imaging, in Real-Time Radiologic Imaging (D. A. Garrett and D. A. ), Americal Society for Testing and Materials, Philadelphia, pp. 267-276 (1980). R. H. McMann, S. Kreinik, J. K. Moore, A. Kaiser, and J. Rossi, A digital noise reducer for encoded NTSC-signal, J. SMPTE 87, 129-133 (1978).

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