Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 최장환 | * |
dc.date.accessioned | 2017-12-27T16:30:37Z | - |
dc.date.available | 2017-12-27T16:30:37Z | - |
dc.date.issued | 2017 | * |
dc.identifier.issn | 0094-2405 | * |
dc.identifier.other | OAK-21560 | * |
dc.identifier.uri | https://dspace.ewha.ac.kr/handle/2015.oak/239334 | - |
dc.description.abstract | Purpose: This article presents the implementation and assessment of photon-counting dual-energy x-ray detector technology for angiographic C-arm systems in interventional radiology. Methods: A photon-counting detector was successfully integrated into a clinical C-arm CT system. Detector performance was assessed using image uniformity metrics in both 2D projections and 3D cone-beam computed tomography (CBCT) images. Uniform exposure fields were acquired to analyze projection images and scans of a homogeneous cylinder phantom were taken to analyze 3D reconstructions. Image uniformity was assessed over a broad range of imaging parameters. Results: Detector calibration greatly improved image uniformity, reducing image variation from 8.8% to 0.5% in an ideal scenario, but image uniformity degraded when imaging parameters varied strongly from values set at calibration: the tube voltage, low-high energy threshhold, and tube current had the greatest impact. Material discrimination and dynamic angiography capabilities were successfully demonstrated in separate phantom and in vivo experiments. Conclusion: The uniformity results identified major factors degrading image quality. The quantitative results will guide selection of calibration points to mitigate the loss of uniformity. The unique combination of dual-energy and fluoroscopy imaging capabilities with a flat-panel photon-counting detector may enable new applications in interventional radiology. © 2017 American Association of Physicists in Medicine. | * |
dc.language | English | * |
dc.publisher | John Wiley and Sons Ltd. | * |
dc.subject | C-arm | * |
dc.subject | computed tomography | * |
dc.subject | dual-energy | * |
dc.subject | photon-counting | * |
dc.subject | x-ray detectors | * |
dc.title | Assessment of a photon-counting detector for a dual-energy C-arm angiographic system: | * |
dc.type | Article | * |
dc.relation.issue | 11 | * |
dc.relation.volume | 44 | * |
dc.relation.index | SCIE | * |
dc.relation.index | SCOPUS | * |
dc.relation.startpage | 5938 | * |
dc.relation.lastpage | 5948 | * |
dc.relation.journaltitle | Medical Physics | * |
dc.identifier.doi | 10.1002/mp.12517 | * |
dc.identifier.wosid | WOS:000414970800037 | * |
dc.identifier.scopusid | 2-s2.0-85030229726 | * |
dc.author.google | Ahmad M. | * |
dc.author.google | Fahrig R. | * |
dc.author.google | Pung L. | * |
dc.author.google | Spahn M. | * |
dc.author.google | Köster N.S. | * |
dc.author.google | Reitz S. | * |
dc.author.google | Moore T. | * |
dc.author.google | Choi J.-H. | * |
dc.author.google | Hinshaw W. | * |
dc.author.google | Xia Y. | * |
dc.author.google | Müller K. | * |
dc.contributor.scopusid | 최장환(55850525400) | * |
dc.date.modifydate | 20240318171633 | * |