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Dosimetric effect of CT contrast agent in CyberKnife treatment plans
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kim, Hee Jung | - |
dc.contributor.author | Chang, Ah Ram | - |
dc.contributor.author | Park, Yang-Kyun | - |
dc.contributor.author | Ye, Sung-Joon | - |
dc.date.accessioned | 2017-03-17T08:35:27Z | - |
dc.date.available | 2017-03-17T17:54:36Z | - |
dc.date.issued | 2013-10-18 | - |
dc.identifier.citation | Radiation Oncology, 8(1):244 | ko_KR |
dc.identifier.uri | https://hdl.handle.net/10371/109831 | - |
dc.description.abstract | Background
To investigate the effect of computed tomography (CT) contrast enhancement (CE) on the 3D dose distributions of non-coplanar small field beams in the CyberKnife (CK) treatment planning system (TPS) for the stereotactic ablative radiotherapy (SABR). Methods Twenty-two pre-CE CT treatment plans were recruited to this retrospective plan study. Their post-CE CT plans were based on the pre-CE CT plan data and calculated using the same MU and beam paths in either Ray-Tracing or Monte Carlo (MC) algorithms. The differences in the doses of the beam path and the reference point between the pre- and post-CE CT plans were compared. The minimum, maximum, and mean doses in dose-volume histograms (DVHs) of target and organs-at-risk (OARs) were also compared. Results The dose differences between the pre- and post-CE plans in a single beam path were less than 1.05% in both calculation algorithms, with respect to the prescription dose. At the center of the target volume, it was 1.9% (maximum 6.2%) in Ray-Tracing and 1.6% (maximum 4.0%) in MC. The CA effect showed on average 1.2% difference in the OAR maximum dose (maximum 7.8% in Ray-Tracing and 7.2% in MC). In the lung cases, the CT CE resulted in a dose difference of 2.4% (from 1.0% to 6.5%) without the calculation algorithm effect (maximum 20.3%). Conclusions The CK treatment plan using the post-CE CT generally afforded less than 2% dose differences from the pre-CE CT plan. However, it could be up to 7.8% depending on the target positions in a body and be more than 20% with the calculation algorithms. Thus, the post-CE CT in CK treatment plans should be used with careful consideration for the CA effect, target position, and calculation algorithm factors. | ko_KR |
dc.language.iso | en | ko_KR |
dc.publisher | BioMed Central | ko_KR |
dc.subject | CyberKnife | ko_KR |
dc.subject | CT contrast | ko_KR |
dc.subject | Small field beam | ko_KR |
dc.title | Dosimetric effect of CT contrast agent in CyberKnife treatment plans | ko_KR |
dc.type | Article | ko_KR |
dc.contributor.AlternativeAuthor | 김희정 | - |
dc.contributor.AlternativeAuthor | 장아람 | - |
dc.contributor.AlternativeAuthor | 박양균 | - |
dc.contributor.AlternativeAuthor | 예성준 | - |
dc.identifier.doi | 10.1186/1748-717X-8-244 | - |
dc.language.rfc3066 | en | - |
dc.rights.holder | Kim et al.; licensee BioMed Central Ltd. | - |
dc.date.updated | 2017-01-06T10:37:13Z | - |
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