scholarly journals Estimation of dose-volume parameters of female urethra as organ-at-risk during interstitial brachytherapy in gynecological malignancies

2021 ◽  
Author(s):  
Nikhila Radhakrishna ◽  
Siddanna Rudrappa Palled ◽  
Tanvir Pasha ◽  
Rekha Reddy Buchapudi ◽  
Govardhan H.B. ◽  
...  
Keyword(s):  
At Risk ◽  
Interstitial Brachytherapy ◽  
Female Urethra ◽  
Gynecological Malignancies ◽  
Dose Volume ◽  
Organ At Risk

scholarly journals The minimum knowledge base for predicting organ-at-risk dose–volume levels and plan-related complications in IMRT planning

2010 ◽  
Vol 55 (7) ◽  
pp. 1935-1947 ◽  
Author(s):  
Hao H Zhang ◽  
Robert R Meyer ◽  
Leyuan Shi ◽  
Warren D D'Souza
Keyword(s):  
At Risk ◽  
Knowledge Base ◽  
Dose Volume ◽  
Imrt Planning ◽  
Organ At Risk

scholarly journals Automated Robust Proton Planning Using Dose-Volume Histogram-Based Mimicking of the Photon Reference Dose and Reducing Organ at Risk Dose Optimization

2019 ◽  
Vol 103 (1) ◽  
pp. 251-258 ◽  
Author(s):  
Roel G.J. Kierkels ◽  
Albin Fredriksson ◽  
Stefan Both ◽  
Johannes A. Langendijk ◽  
Daniel Scandurra ◽  
...  
Keyword(s):  
At Risk ◽  
Dose Optimization ◽  
Dose Volume Histogram ◽  
Reference Dose ◽  
Dose Volume ◽  
Organ At Risk

Influence of Organ at Risk Definition on Rectal Dose-Volume Histograms in Patients with Prostate Cancer Undergoing External-Beam Radiotherapy

2006 ◽  
Vol 182 (5) ◽  
pp. 277-282 ◽  
Author(s):  
Dirk Boehmer ◽  
David Kuczer ◽  
Harun Badakhshi ◽  
Simone Stiefel ◽  
Wolf Kuschke ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
At Risk ◽  
External Beam Radiotherapy ◽  
External Beam ◽  
Dose Volume Histograms ◽  
Rectal Dose ◽  
Dose Volume ◽  
Risk Definition ◽  
Organ At Risk

scholarly journals Comparison of different contouring definitions of the rectum as organ at risk (OAR) and dose–volume parameters predicting rectal inflammation in radiotherapy of prostate cancer: which definition to use?

2017 ◽  
Vol 90 (1070) ◽  
pp. 20160370 ◽  
Author(s):  
Mirko Nitsche ◽  
Werner Brannath ◽  
Matthias Brückner ◽  
Dirk Wagner ◽  
Alexander Kaltenborn ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
At Risk ◽  
Dose Volume ◽  
Organ At Risk

SU-FF-T-480: Minimum Multi-Plan IMRT Framework Knowledge Base for Predicting Organ-At-Risk Dose-Volume Levels and Complications

2009 ◽  
Vol 36 (6Part16) ◽  
pp. 2633-2633
Author(s):  
H Zhang ◽  
R Meyer ◽  
L Shi ◽  
W D'Souza
Keyword(s):  
At Risk ◽  
Knowledge Base ◽  
Dose Volume ◽  
Organ At Risk

scholarly journals Optimization of the fractionated irradiation scheme considering physical doses to tumor and organ at risk based on dose–volume histograms

2015 ◽  
Vol 42 (11) ◽  
pp. 6203-6210 ◽  
Author(s):  
Yasutaka Sugano ◽  
Masahiro Mizuta ◽  
Seishin Takao ◽  
Hiroki Shirato ◽  
Kenneth L. Sutherland ◽  
...  
Keyword(s):  
At Risk ◽  
Fractionated Irradiation ◽  
Dose Volume Histograms ◽  
Dose Volume ◽  
Irradiation Scheme ◽  
Organ At Risk

scholarly journals Multicatheter interstitial brachytherapy versus stereotactic radiotherapy with CyberKnife for accelerated partial breast irradiation: a comparative treatment planning study with respect to dosimetry of organs at risk

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
András Herein ◽  
Gábor Stelczer ◽  
Csilla Pesznyák ◽  
Georgina Fröhlich ◽  
Viktor Smanykó ◽  
...  
Keyword(s):  
At Risk ◽  
Stereotactic Radiotherapy ◽  
Organs At Risk ◽  
Contralateral Breast ◽  
Interstitial Brachytherapy ◽  
Accelerated Partial Breast Irradiation ◽  
Partial Breast Irradiation ◽  
Breast Irradiation ◽  
Ipsilateral Lung ◽  
Dose Volume

Abstract Background The aim of the study was to dosimetrically compare multicatheter interstitial brachytherapy (MIBT) and stereotactic radiotherapy with CyberKnife (CK) for accelerated partial breast irradiation (APBI) especially concerning the dose of organs at risk (OAR-s). Patients and methods Treatment plans of thirty-two MIBT and CK patients were compared. The OAR-s included ipsilateral non-target and contralateral breast, ipsilateral and contralateral lung, skin, ribs, and heart for left-sided cases. The fractionation was identical (4 x 6.25 Gy) in both treatment groups. The relative volumes (e.g. V100, V90) receiving a given relative dose (100%, 90%), and the relative doses (e.g. D0.1cm3, D1cm3) delivered to the most exposed small volumes (0.1 cm3, 1 cm3) were calculated from dose-volume histograms. All dose values were related to the prescribed dose (25 Gy). Results Regarding non-target breast CK performed slightly better than MIBT (V100: 0.7% vs. 1.6%, V50: 10.5% vs. 12.9%). The mean dose of the ipsilateral lung was the same for both techniques (4.9%), but doses irradiated to volume of 1 cm3 were lower with MIBT (36.1% vs. 45.4%). Protection of skin and rib was better with MIBT. There were no significant differences between the dose-volume parameters of the heart, but with MIBT, slightly larger volumes were irradiated by 5% dose (V5: 29.9% vs. 21.2%). Contralateral breast and lung received a somewhat higher dose with MIBT (D1cm3: 2.6% vs. 1.8% and 3.6% vs. 2.5%). Conclusions The target volume can be properly irradiated by both techniques with similar dose distributions and high dose conformity. Regarding the dose to the non-target breast, heart, and contralateral organs the CK was superior, but the nearby organs (skin, ribs, ipsilateral lung) received less dose with MIBT. The observed dosimetric differences were small but significant in a few parameters at the examined patient number. More studies are needed to explore whether these dosimetric findings have clinical significance.

scholarly journals Implementation of 3D-CT based brachytherapy in the postoperative radiotherapy of cervical cancer: Treatment technique and dose-volume parameters

2009 ◽  
Vol 56 (4) ◽  
pp. 201-207
Author(s):  
V. Plesinac-Karapandzic ◽  
N. Borojevic ◽  
B. Markovic ◽  
V. Stankovic ◽  
S. Vuckovic ◽  
...  
Keyword(s):  
Cervical Cancer ◽  
At Risk ◽  
Cancer Treatment ◽  
Postoperative Radiotherapy ◽  
Reference Points ◽  
Intracavitary Brachytherapy ◽  
Treatment Technique ◽  
3D Ct ◽  
Dose Volume ◽  
Organ At Risk

Intracavitary brachytherapy has an important roll in developing complications in postoperative radiotherapy of cervical cancer. 3D-CT based brachytherapy gives precisely estimating doses to organ at risk. In this study, we show our preliminary results in implementation of 3D-imaging based postoperative brachytherapy of cervical cancer: treatment technique and dose-volume parameters. During 2009 year, in 6 patients with early stage I-II of cervical cancer, brachytherapy treatment planning was based on the radiographs and CT imaging brachytherapy technique. Mean values of ICRU reference points of rectum was R max 4,2Gy and bladder B max. 4,5Gy, while estimated volume-dose parameters D0.1 cm 3 D1.0 cm 3 D2.0 cm 3 were presented with higher dose. Volume of organ at risk reflected the need for better bladder preparation. Our initial experience in performing CT-based brachytherapy, enabled us to introduce the characteristics of the parameters, assessment of their significance from the aspect of mutual relations applicators and organs at risk. Further analysis are needed, for monitoring the effects of 3D planning on complications.

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