Investigation on Beam-Blocker-Based Scatter Correction Method for Improving CT Number Accuracy
Cone-beam computed tomography (CBCT) is gaining widespread use in various medical and industrial applications but suffers from substantially larger amount of scatter than that in the conventional diagnostic CT resulting in relatively poor image quality. Various methods that can reduce and/or correct...
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| Veröffentlicht in: | IEEE transactions on nuclear science 2017-03, Vol.64 (3), p.908-914 |
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| creator | Hoyeon Lee Jonghwan Min Taewon Lee Rizza Pua Sabir, Sohail Kown-Ha Yoon Hokyung Kim Seungryong Cho |
| description | Cone-beam computed tomography (CBCT) is gaining widespread use in various medical and industrial applications but suffers from substantially larger amount of scatter than that in the conventional diagnostic CT resulting in relatively poor image quality. Various methods that can reduce and/or correct for the scatter in the CBCT have therefore been developed. Scatter correction method that uses a beam-blocker has been considered a direct measurement-based approach providing accurate scatter estimation from the data in the shadows of the beam-blocker. To the best of our knowledge, there has been no record reporting the significance of the scatter from the beam-blocker itself in such correction methods. In this paper, we identified the scatter from the beam-blocker that is detected in the object-free projection data investigated its influence on the image accuracy of CBCT reconstructed images, and developed a scatter correction scheme that takes care of this scatter as well as the scatter from the scanned object. |
| doi_str_mv | 10.1109/TNS.2017.2669519 |
| format | Article |
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Various methods that can reduce and/or correct for the scatter in the CBCT have therefore been developed. Scatter correction method that uses a beam-blocker has been considered a direct measurement-based approach providing accurate scatter estimation from the data in the shadows of the beam-blocker. To the best of our knowledge, there has been no record reporting the significance of the scatter from the beam-blocker itself in such correction methods. 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(IEEE) 2017</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c291t-bdfde0cbeb6334dae08f0ad72c22e4ef717ca74c4198094fff7fcab6d8ffcc7c3</citedby><cites>FETCH-LOGICAL-c291t-bdfde0cbeb6334dae08f0ad72c22e4ef717ca74c4198094fff7fcab6d8ffcc7c3</cites><orcidid>0000-0002-9409-3628</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/7857069$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>314,776,780,792,27901,27902,54733</link.rule.ids><linktorsrc>$$Uhttps://ieeexplore.ieee.org/document/7857069$$EView_record_in_IEEE$$FView_record_in_$$GIEEE</linktorsrc></links><search><creatorcontrib>Hoyeon Lee</creatorcontrib><creatorcontrib>Jonghwan Min</creatorcontrib><creatorcontrib>Taewon Lee</creatorcontrib><creatorcontrib>Rizza Pua</creatorcontrib><creatorcontrib>Sabir, Sohail</creatorcontrib><creatorcontrib>Kown-Ha Yoon</creatorcontrib><creatorcontrib>Hokyung Kim</creatorcontrib><creatorcontrib>Seungryong Cho</creatorcontrib><title>Investigation on Beam-Blocker-Based Scatter Correction Method for Improving CT Number Accuracy</title><title>IEEE transactions on nuclear science</title><addtitle>TNS</addtitle><description>Cone-beam computed tomography (CBCT) is gaining widespread use in various medical and industrial applications but suffers from substantially larger amount of scatter than that in the conventional diagnostic CT resulting in relatively poor image quality. 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computed tomography (CBCT) is gaining widespread use in various medical and industrial applications but suffers from substantially larger amount of scatter than that in the conventional diagnostic CT resulting in relatively poor image quality. 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| subjects | Beam-blocker Computed tomography cone-beam computed tomography (CBCT) Detectors Diagnostic systems Estimation Forecasting Identification methods Image detection Image quality Image reconstruction Industrial applications Metals scatter correction Scattering Strips X-ray imaging |
| title | Investigation on Beam-Blocker-Based Scatter Correction Method for Improving CT Number Accuracy |
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