Feasibility evaluation of prone breast irradiation with the Sagittilt© system including residual-intrafractional error assessment

Lakosi, Ferenc; Gulybán, Ákos; Simoni, Selma Ben-Mustapha; Nguyen, Paul Viet; Berkovic, P.; Noël, Mathilde; Gourmet, N.; Coucke, Philippe

doi:10.1016/j.canrad.2016.05.014

Cited by 8 publications

(12 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…While Joszef et al 28 report slightly superior margins along the LL and CC axis compared to the prone crawl setup, their report only concerns partial breast irradiation, so effects of edema on patient shift might not be as pronounced. In general, our crawl couch results compare favourably to most of the results published for prone radiotherapy [13][14][15]18,22,[26][27][28][29][30] , especially for the AP and LL systematic error distribution defined by M and ∑. Because our random error σ is lower than in these other studies, we can obtain smaller PTV margins of around 1 cm in these directions.…”

Section: Discussionsupporting

confidence: 84%

Crawl positioning improves set-up precision and patient comfort in prone whole breast irradiation

Deseyne

Speleers

Neve

et al. 2020

Sci Rep

View full text Add to dashboard Cite

Prone positioning for whole-breast irradiation (WBI) reduces dose to organs at risk, but reduces set-up speed, precision, and comfort. We aimed to improve these problems by placing patients in prone crawl position on a newly developed crawl couch (CrC). A group of 10 right-sided breast cancer patients requiring WBI were randomized in this cross-over trial, comparing the CrC to a standard prone breastboard (BB). Laterolateral (LL), craniocaudal (CC) and anterioposterior (AP) set-up errors were evaluated with cone beam CT. Comfort, preference and set-up time (SUT) were assessed. Forty left and right-sided breast cancer patients served as a validation group. For BB versus CrC, AP, LL and CC mean patient shifts were − 0.8 ± 2.8, 0.2 ± 11.7 and − 0.6 ± 4.4 versus − 0.2 ± 3.3, − 0.8 ± 2.5 and − 1.9 ± 5.7 mm. LL shift spread was reduced significantly. Nine out of 10 patients preferred the CrC. SUT did not differ significantly. The validation group had mean patient shifts of 1.7 ± 2.9 (AP), 0.2 ± 3.6 (LL) and − 0.2 ± 3.3 (CC) mm. Mean SUT in the validation group was 1 min longer (P < 0.05) than the comparative group. Median SUT was 3 min in all groups. The CrC improved precision and comfort compared to BB. Set-up errors compare favourably to other prone-WBI trials and rival supine positioning.

show abstract

Section: Discussionsupporting

confidence: 84%

Crawl positioning improves set-up precision and patient comfort in prone whole breast irradiation

Deseyne

Speleers

Neve

et al. 2020

Sci Rep

View full text Add to dashboard Cite

show abstract

“…Another study by Lakosi et al . 17 used CBCT to study the setup errors of 36 cases of breast cancer in the prone position. Their results showed that Σ and δ were about 4.5 mm and 5.4 mm in left-right, 3.9 mm and 3.8 mm in cranial-caudal, 3.3 mm and 2.8 mm in anterior-posterior direction, the PTV margins were 15.0 mm, 12.3 mm and 10.3 mm, respectively.…”

Section: Discussionmentioning

confidence: 99%

Setup errors and effectiveness of Optical Laser 3D Surface imaging system (Sentinel) in postoperative radiotherapy of breast cancer

Wei

Liu

Ding

et al. 2018

Sci Rep

View full text Add to dashboard Cite

Breast-conserving surgery (BCS) plus postoperative radiotherapy has become the standard treatment for early-stage breast cancer. The aim of this study was to compare the setup accuracy of optical surface imaging by the Sentinel system with cone-beam computerized tomography (CBCT) imaging currently used in our clinic for patients received BCS. Two optical surface scans were acquired before and immediately after couch movement correction. The correlation between the setup errors as determined by the initial optical surface scan and CBCT was analyzed. The deviation of the second optical surface scan from the reference planning CT was considered an estimate for the residual errors for the new method for patient setup correction. The consequences in terms for necessary planning target volume (PTV) margins for treatment sessions without setup correction applied. We analyzed 145 scans in 27 patients treated for early stage breast cancer. The setup errors of skin marker based patient alignment by optical surface scan and CBCT were correlated, and the residual setup errors as determined by the optical surface scan after couch movement correction were reduced. Optical surface imaging provides a convenient method for improving the setup accuracy for breast cancer patient without unnecessary imaging dose.

show abstract

“…The supine and prone CT series and supine topogram of patients included in the study ''Individualized positioning for maximum heart and index breast protection during breast irradiation: comparative study between Prone and Supine (Approval: 26/09/2013, B707201318246) were retrospectively used for independent testing. The protocol of patient positioning, delineation and radiation treatment planning has been described [27].…”

Section: External Testingmentioning

confidence: 99%

“…Interfractional differences may be especially large in the prone position [18,30]. Lakosi et al found population systematic error values of 4.5/3.9/3.3 mm in the lateral/longitudinal/vertical directions, while the random error was 5.4/3.8/2.8 mm [27]. Among our recent breast radiotherapy cases, the population systematic and random error in the lateral/longitudinal/vertical directions was similar in the prone position vs. supine position (3.4/2.3/2.7 mm and 7.8/4.6/6.9 mm, respectively vs. 2.2/3.0/1.6 mm and 6.7/5.5/4.5 mm, respectively).…”

Section: Gyheartmentioning

confidence: 99%

A simple clinical method for predicting the benefit of prone vs. supine positioning in reducing heart exposure during left breast radiotherapy

Kahán

Rárosi

Gaál

et al. 2018

Radiotherapy and Oncology

View full text Add to dashboard Cite

show abstract

Feasibility evaluation of prone breast irradiation with the Sagittilt© system including residual-intrafractional error assessment

Abstract: Please cite this article in press as: Lakosi F, et al. Feasibility evaluation of prone breast irradiation with the Sagittilt © system including residual-intrafractional error assessment. Cancer Radiother (2016), http://dx

Cited by 8 publications

References 34 publications

Crawl positioning improves set-up precision and patient comfort in prone whole breast irradiation

Crawl positioning improves set-up precision and patient comfort in prone whole breast irradiation

Setup errors and effectiveness of Optical Laser 3D Surface imaging system (Sentinel) in postoperative radiotherapy of breast cancer

A simple clinical method for predicting the benefit of prone vs. supine positioning in reducing heart exposure during left breast radiotherapy

Contact Info

Product

Resources

About