Total error shift patterns for daily CT on rails image-guided radiotherapy to the prostate bed
<p>Abstract</p> <p>Background</p> <p>To evaluate the daily total error shift patterns on post-prostatectomy patients undergoing image guided radiotherapy (IGRT) with a diagnostic quality computer tomography (CT) on rails system.</p> <p>Methods</p> <...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
BMC
2011-10-01
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| Series: | Radiation Oncology |
| Subjects: | |
| Online Access: | http://www.ro-journal.com/content/6/1/142 |
| _version_ | 1811246935057629184 |
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| author | Mota Helvecio C Ferreira Maria C Liu Jingxia Gay Hiram A Cavalieri Ronaldo Sibata Claudio H Allison Ron R |
| author_facet | Mota Helvecio C Ferreira Maria C Liu Jingxia Gay Hiram A Cavalieri Ronaldo Sibata Claudio H Allison Ron R |
| author_sort | Mota Helvecio C |
| collection | DOAJ |
| description | <p>Abstract</p> <p>Background</p> <p>To evaluate the daily total error shift patterns on post-prostatectomy patients undergoing image guided radiotherapy (IGRT) with a diagnostic quality computer tomography (CT) on rails system.</p> <p>Methods</p> <p>A total of 17 consecutive post-prostatectomy patients receiving adjuvant or salvage IMRT using CT-on-rails IGRT were analyzed. The prostate bed's daily total error shifts were evaluated for a total of 661 CT scans.</p> <p>Results</p> <p>In the right-left, cranial-caudal, and posterior-anterior directions, 11.5%, 9.2%, and 6.5% of the 661 scans required no position adjustments; 75.3%, 66.1%, and 56.8% required a shift of 1 - 5 mm; 11.5%, 20.9%, and 31.2% required a shift of 6 - 10 mm; and 1.7%, 3.8%, and 5.5% required a shift of more than 10 mm, respectively. There was evidence of correlation between the x and y, x and z, and y and z axes in 3, 3, and 3 of 17 patients, respectively. Univariate (ANOVA) analysis showed that the total error pattern was random in the x, y, and z axis for 10, 5, and 2 of 17 patients, respectively, and systematic for the rest. Multivariate (MANOVA) analysis showed that the (x,y), (x,z), (y,z), and (x, y, z) total error pattern was random in 5, 1, 1, and 1 of 17 patients, respectively, and systematic for the rest.</p> <p>Conclusions</p> <p>The overall daily total error shift pattern for these 17 patients simulated with an empty bladder, and treated with CT on rails IGRT was predominantly systematic. Despite this, the temporal vector trends showed complex behaviors and unpredictable changes in magnitude and direction. These findings highlight the importance of using daily IGRT in post-prostatectomy patients.</p> |
| first_indexed | 2024-04-12T15:00:43Z |
| format | Article |
| id | doaj.art-243e293d0c5343f5b41fe22a438a31cf |
| institution | Directory Open Access Journal |
| issn | 1748-717X |
| language | English |
| last_indexed | 2024-04-12T15:00:43Z |
| publishDate | 2011-10-01 |
| publisher | BMC |
| record_format | Article |
| series | Radiation Oncology |
| spelling | doaj.art-243e293d0c5343f5b41fe22a438a31cf2022-12-22T03:28:05ZengBMCRadiation Oncology1748-717X2011-10-016114210.1186/1748-717X-6-142Total error shift patterns for daily CT on rails image-guided radiotherapy to the prostate bedMota Helvecio CFerreira Maria CLiu JingxiaGay Hiram ACavalieri RonaldoSibata Claudio HAllison Ron R<p>Abstract</p> <p>Background</p> <p>To evaluate the daily total error shift patterns on post-prostatectomy patients undergoing image guided radiotherapy (IGRT) with a diagnostic quality computer tomography (CT) on rails system.</p> <p>Methods</p> <p>A total of 17 consecutive post-prostatectomy patients receiving adjuvant or salvage IMRT using CT-on-rails IGRT were analyzed. The prostate bed's daily total error shifts were evaluated for a total of 661 CT scans.</p> <p>Results</p> <p>In the right-left, cranial-caudal, and posterior-anterior directions, 11.5%, 9.2%, and 6.5% of the 661 scans required no position adjustments; 75.3%, 66.1%, and 56.8% required a shift of 1 - 5 mm; 11.5%, 20.9%, and 31.2% required a shift of 6 - 10 mm; and 1.7%, 3.8%, and 5.5% required a shift of more than 10 mm, respectively. There was evidence of correlation between the x and y, x and z, and y and z axes in 3, 3, and 3 of 17 patients, respectively. Univariate (ANOVA) analysis showed that the total error pattern was random in the x, y, and z axis for 10, 5, and 2 of 17 patients, respectively, and systematic for the rest. Multivariate (MANOVA) analysis showed that the (x,y), (x,z), (y,z), and (x, y, z) total error pattern was random in 5, 1, 1, and 1 of 17 patients, respectively, and systematic for the rest.</p> <p>Conclusions</p> <p>The overall daily total error shift pattern for these 17 patients simulated with an empty bladder, and treated with CT on rails IGRT was predominantly systematic. Despite this, the temporal vector trends showed complex behaviors and unpredictable changes in magnitude and direction. These findings highlight the importance of using daily IGRT in post-prostatectomy patients.</p>http://www.ro-journal.com/content/6/1/142Post-prostatectomy radiotherapyIGRTCT on railsshift total errorprostate bed |
| spellingShingle | Mota Helvecio C Ferreira Maria C Liu Jingxia Gay Hiram A Cavalieri Ronaldo Sibata Claudio H Allison Ron R Total error shift patterns for daily CT on rails image-guided radiotherapy to the prostate bed Radiation Oncology Post-prostatectomy radiotherapy IGRT CT on rails shift total error prostate bed |
| title | Total error shift patterns for daily CT on rails image-guided radiotherapy to the prostate bed |
| title_full | Total error shift patterns for daily CT on rails image-guided radiotherapy to the prostate bed |
| title_fullStr | Total error shift patterns for daily CT on rails image-guided radiotherapy to the prostate bed |
| title_full_unstemmed | Total error shift patterns for daily CT on rails image-guided radiotherapy to the prostate bed |
| title_short | Total error shift patterns for daily CT on rails image-guided radiotherapy to the prostate bed |
| title_sort | total error shift patterns for daily ct on rails image guided radiotherapy to the prostate bed |
| topic | Post-prostatectomy radiotherapy IGRT CT on rails shift total error prostate bed |
| url | http://www.ro-journal.com/content/6/1/142 |
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