Abstract：
:Flat-panel imagers consisting of the first large area, self-scanning, pixelated, solid-state arrays made with hydrogenated amorphous silicon (a-Si:H) are under development by the authors for applications in diagnostic x-ray and megavoltage radiotherapy imaging. The arrays, designated by the acronym MASDA for multi-element amorphous silicon detector array, consist of a two-dimensional array of a-Si:H photodiodes and thin-film transistors and are used in conjunction with scintillating materials. Imagers utilizing MASDA arrays offer a variety of advantages over existing technologies. This article presents initial megavoltage and diagnostic-quality x-ray images taken with several such arrays including the first examples of anatomical-phantom images. The external readout electronics and imaging techniques required to obtain such images are outlined, the construction, operation, and advantages of the arrays briefly reviewed, and the future potential of this new technology discussed.
journal_name
Med Physjournal_title
Medical physicsauthors
Antonuk LE,Boudry J,Huang W,McShan DL,Morton EJ,Yorkston J,Longo MJ,Street RAdoi
10.1118/1.596802subject
Has Abstractpub_date
1992-11-01 00:00:00pages
1455-66issue
6eissn
0094-2405issn
2473-4209journal_volume
19pub_type
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