SU-E-T-838: Inverse-Planned Multi-Beam Intensity-Modulated Radiation Therapy versus Three-Dimensional Conformal Radiotherapy for Left Breast Cancer Patients after Mastectomy

2011 ◽  
Vol 38 (6Part24) ◽  
pp. 3684-3684
Author(s):  
E Rakhno ◽  
J Crass ◽  
P Thompson ◽  
A Chakravarthy
Keyword(s):  
Breast Cancer ◽  
Radiation Therapy ◽  
Cancer Patients ◽  
Three Dimensional ◽  
Intensity Modulated Radiation Therapy ◽  
Conformal Radiotherapy ◽  
Left Breast ◽  
Breast Cancer Patients ◽  
Intensity Modulated ◽  
Three Dimensional Conformal Radiotherapy

scholarly journals Intensity-Modulated Radiation Therapy in Breast Cancer Patients Following the Release of a Choosing Wisely Recommendation

2019 ◽  
Vol 112 (3) ◽  
pp. 314-317
Author(s):  
Mylin A Torres ◽  
Keerthi Gogineni ◽  
David H Howard
Keyword(s):  
Breast Cancer ◽  
Radiation Therapy ◽  
Cancer Patients ◽  
Three Dimensional ◽  
Intensity Modulated Radiation Therapy ◽  
Conformal Radiotherapy ◽  
Breast Conserving Surgery ◽  
Breast Cancer Patients ◽  
Intensity Modulated ◽  
Percentage Points

Abstract In 2013, the American Society for Radiation Oncology recommended against the routine use of intensity-modulated radiation therapy (IMRT) in breast cancer patients. We evaluated trends in the use of IMRT before and after the release of the recommendation. Using Surveillance, Epidemiology, and End Results Medicare data, we identified 13 457 breast cancer patients diagnosed between 2012 and 2015 who received breast-conserving surgery and postsurgery, whole-breast, IMRT, or three-dimensional conformal radiotherapy. We find that the use of IMRT decreased by 4.6 (95% confidence interval [CI] = 3.6 to 5.6; two-sided P < .001) percentage points in hospital-based clinics. In freestanding radiotherapy clinics, which had baseline rates of IMRT use that were more than 20 percentage points higher than in hospital-based clinics, use of IMRT declined by 6.1 (95% CI = 3.5 to 8.7; two-sided P < .001) percentage points. Use of IMRT declined following the release of the recommendation, but a large share of patients treated in freestanding clinics continue to receive IMRT.

Dosimetric analysis of intensity-modulated radiotherapy and three-dimensional conformal radiotherapy for chest wall irradiation in breast cancer patients

2015 ◽  
Vol 15 (1) ◽  
pp. 30-37 ◽  
Author(s):  
Mehlam Kausar ◽  
Om Prakash Gurjar ◽  
Priyusha Bagdare ◽  
Krishna Lal Gupta ◽  
Virendra Bhandari ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Cancer Patients ◽  
Chest Wall ◽  
Three Dimensional ◽  
Intensity Modulated Radiotherapy ◽  
Conformal Radiotherapy ◽  
Breast Cancer Patients ◽  
Intensity Modulated ◽  
Significant Difference ◽  
Three Dimensional Conformal Radiotherapy

AbstractBackgroundFor chest wall irradiation in breast cancer patients, three-dimensional conformal radiotherapy (3DCRT) and intensity-modulated radiotherapy (IMRT) have made tremendous changes in treatment delivery.PurposeThe purpose of this study is to compare the dosimetric parameters in IMRT and 3DCRT plans.Materials and methodsIMRT and 3DCRT plans were generated for 25 randomly selected postmastectomy breast cancer patients. The prescribed dose (PD) was 50 Gray (Gy) in 25 fractions (#) at the rate of 2 Gy/# with 5#/week. Dose volume histogram was evaluated for planning target volume (PTV) coverage and dose to organs at risk (OARs). All the dosimetric parameters were compared using unpaired student’s t-test.ResultsPTV coverage was significantly better in IMRT, although the 90% of PTV was well covered by 90% of PD in all plans by both the techniques. Homogeneity index and conformity index were better in IMRT. V5 Gy and Dmean of contralateral lung, contralateral breast and heart (right side chest wall cases) were found to be lesser in 3DCRT compared with that in IMRT. However, there was no significant difference in V20 Gy of ipsilateral lung and V25 Gy of heart (left side chest wall cases) in all the plans by both the techniques.ConclusionAdequate target coverage was achieved by both the techniques, however, dose to OARs were lesser in 3DCRT plans as compared with that in IMRT plans. Thus, it can be concluded that 3DCRT is as efficient as IMRT for the chest wall irradiation.

Sign in / Sign up

Export Citation Format

Share Document