Article (Scientific journals)
A simple clinical method for predicting the benefit of prone vs. supine positioning in reducing heart exposure during left breast radiotherapy
Kahan, Zsuzsanna; Rarosi, Ferenc; Gaal, Szilvia et al.
2018In Radiotherapy and Oncology
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Keywords :
breast radiotherapy; Clinical tool; Heart protection; individual positioning; LAD protection
Abstract :
[en] Background and purpose: The benefit of reduced radiation heart exposure in the prone vs. supine position individually differs. In this prospective cohort study, the goal was to develop a simple method for the operation of a validated model for the prediction of preferable treatment position during left breast radiotherapy. Material and methods: In 100 cases, a single CT slice was utilized for the collection of the needed patientspecific data (in addition to body mass index, the distance of the LAD from the chest wall and the area of the heart included in the radiation fields at the middle of the heart in the supine position). Outcome was analyzed in relation to the full CT series acquired in both positions and dosimetric data. Results: Great consistency was found between the tested and original method regarding sensitivity and specificity. The prioritization of LAD dose, and the use of heart dose and position-specific dose constraints as safety measures ensure sensitivity and specificity values of 82.8% and 87.3%, respectively. In an additional ‘‘routine clinical practice” series of 60 patients the new method seemed feasible in routine clinical practice. External testing on a 28-case series indicated similar accuracy. Conclusion: We consider this simple clinical tool appropriate for assisting individual positioning aiming at maximum heart protection during left breast irradiation
Disciplines :
Oncology
Author, co-author :
Kahan, Zsuzsanna
Rarosi, Ferenc
Gaal, Szilvia
Cserhati, Adrienn
Boda, Krisztina
Darazs, Barbara
Koszo, Renata
Lakosi, Ferenc
GULYBAN, Akos ;  Centre Hospitalier Universitaire de Liège - CHU > Service médical de radiothérapie
COUCKE, Philippe  ;  Centre Hospitalier Universitaire de Liège - CHU > Service médical de radiothérapie
Varga, Zoltan
Language :
English
Title :
A simple clinical method for predicting the benefit of prone vs. supine positioning in reducing heart exposure during left breast radiotherapy
Publication date :
January 2018
Journal title :
Radiotherapy and Oncology
ISSN :
0167-8140
eISSN :
1879-0887
Publisher :
Elsevier, Netherlands
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 05 April 2018

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