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Combination of current-integrating/photon-counting detector modules for spectral CT
| Content Provider | Scilit |
|---|---|
| Author | Chu, Jiyang Cong, Wenxiang Li, Liang Wang, Ge |
| Copyright Year | 2013 |
| Description | Journal: Physics in Medicine & Biology Inspired by compressive sensing theory and spectral detection technology, here we propose a novel design of a CT detector array that uses current-integrating/photon-counting modules in an interlacing fashion so that strengths of each detector type can be synergistically combined. For geometrical symmetry, an evenly alternating pattern is initially assumed for these detector modules to form a hybrid detector array. While grayscale detector modules acquire regular raw data in a large dynamic range cost-effectively, spectral detector modules simultaneously sense energy-discriminative data in multiple energy bins. A split Bregman iterative algorithm is developed for spectral CT reconstruction from projection data of an object collected with the hybrid detector array. With mathematical phantoms, an optimal ratio of the number of the spectral elements over the number of grayscale elements is determined based on classic image quality evaluation. This hybrid detector array is capable of delivering a performance comparable with that of a full spectral detector array. |
| Related Links | http://iopscience.iop.org/0031-9155/58/19/7009/pdf/0031-9155_58_19_7009.pdf |
| Ending Page | 7024 |
| Page Count | 16 |
| Starting Page | 7009 |
| ISSN | 00319155 |
| e-ISSN | 13616560 |
| DOI | 10.1088/0031-9155/58/19/7009 |
| Journal | Physics in Medicine & Biology |
| Issue Number | 19 |
| Volume Number | 58 |
| Language | English |
| Publisher | IOP Publishing |
| Publisher Date | 2013-09-17 |
| Access Restriction | Open |
| Subject Keyword | Journal: Physics in Medicine & Biology Integrating/photon |
| Content Type | Text |
| Resource Type | Article |
| Subject | Radiology, Nuclear Medicine and Imaging Radiological and Ultrasound Technology |
