Abstract
A pendant-geometry, cone-beam breast CT scanner has been constructed and is undergoing thorough testing in our facility. The system is capable of acquiring 30 frames/sec in 2×2 binning mode (1024×768 pixels) using a flat panel detector coupled to a thallium-doped cesium iodide scintillator. The DQE of the detector system for RQA5 and RQA9 x-ray beam qualities were computed, and the low frequency DQE values were 65% and 57% respectively at approximately 16 μR/frame. The results also shown that minor improvements in DQE are achieved for exposures greater than 16 μR/frame. It is expected that the scanner will be available for the imaging of human volunteers in the first half of 2004.
Original language | English (US) |
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Title of host publication | Proceedings of SPIE - The International Society for Optical Engineering |
Editors | M.J. Yaffe, M.J. Flynn |
Pages | 304-310 |
Number of pages | 7 |
Volume | 5368 |
Edition | 1 |
DOIs | |
State | Published - 2004 |
Event | Medical Imaging 2004: Physics of Medical Imaging - San Diego, CA, United States Duration: Feb 15 2004 → Feb 17 2004 |
Other
Other | Medical Imaging 2004: Physics of Medical Imaging |
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Country/Territory | United States |
City | San Diego, CA |
Period | 2/15/04 → 2/17/04 |
Keywords
- Breast imaging
- Computed tomography
- Cone-beam
- DQE
- Mammography
- MTF
- X-ray
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Condensed Matter Physics