Active pixel sensor architectures in a -SiH for medical imaging
The most widely used architecture in large area amorphous silicon (a-Si) flat panel imagers is the passive pixel sensor (PPS), which consists of a detector and a readout switch. While the PPS has the advantage of being compact and amenable towards high-resolution imaging, reading the low PPS output...
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| Veröffentlicht in: | Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films Surfaces, and Films, 2002-05, Vol.20 (3), p.1095-1099 |
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| container_end_page | 1099 |
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| container_issue | 3 |
| container_start_page | 1095 |
| container_title | Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films |
| container_volume | 20 |
| creator | Karim, Karim S. Nathan, Arokia Rowlands, John A. |
| description | The most widely used architecture in large area amorphous silicon (a-Si) flat panel imagers is the passive pixel sensor (PPS), which consists of a detector and a readout switch. While the PPS has the advantage of being compact and amenable towards high-resolution imaging, reading the low PPS output signal requires external circuitry such as column charge amplifiers that produce additional noise and reduce the minimum readable sensor input signal. This work presents a voltage mediated active pixel sensor (APS) on-pixel readout circuit for diagnostic medical imaging to minimize external component count and hence external readout noise sources. Preliminary results indicate excellent APS linearity along with a pixel readout time suitable for mammography or radiography. |
| doi_str_mv | 10.1116/1.1460897 |
| format | Article |
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| fulltext | fulltext |
| identifier | ISSN: 0734-2101 |
| ispartof | Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films, 2002-05, Vol.20 (3), p.1095-1099 |
| issn | 0734-2101 1520-8559 |
| language | eng |
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| source | AIP Journals Complete |
| subjects | Amorphous silicon Computer simulation Computer software Differential equations Electric currents Electric resistance Mammography Medical imaging Threshold voltage |
| title | Active pixel sensor architectures in a -SiH for medical imaging |
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