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https://www.readbyqxmd.com/read/28094198/late-side-effects-and-cosmetic-results-of-accelerated-partial-breast-irradiation-with-interstitial-brachytherapy-versus-whole-breast-irradiation-after-breast-conserving-surgery-for-low-risk-invasive-and-in-situ-carcinoma-of-the-female-breast-5-year-results
#1
Csaba Polgár, Oliver J Ott, Guido Hildebrandt, Daniela Kauer-Dorner, Hellen Knauerhase, Tibor Major, Jaroslaw Lyczek, José Luis Guinot, Jürgen Dunst, Cristina Gutierrez Miguelez, Pavel Slampa, Michael Allgäuer, Kristina Lössl, Bülent Polat, György Kovács, Arnt-René Fischedick, Rainer Fietkau, Alexandra Resch, Anna Kulik, Leo Arribas, Peter Niehoff, Ferran Guedea, Annika Schlamann, Richard Pötter, Christine Gall, Wolfgang Uter, Vratislav Strnad
BACKGROUND: We previously confirmed the non-inferiority of accelerated partial breast irradiation (APBI) with interstitial brachytherapy in terms of local control and overall survival compared with whole-breast irradiation for patients with early-stage breast cancer who underwent breast-conserving surgery in a phase 3 randomised trial. Here, we present the 5-year late side-effects and cosmetic results of the trial. METHODS: We did this randomised, controlled, phase 3 trial at 16 centres in seven European countries...
January 13, 2017: Lancet Oncology
https://www.readbyqxmd.com/read/28070767/strut-adjusted-volume-implant-savi-brachytherapy-based-accelerated-partial-breast-irradiation-apbi-in-african-american-women
#2
Amir Isbell, Jacquelyn Dunmore-Griffith, Olubunmi Abayomi
PURPOSE: To examine the clinical outcomes of postmenopausal African American (AA) women treated with strut-adjusted volume implant brachytherapy-based accelerated partial breast irradiation for early-stage node-negative breast cancer. METHODS: From January 2011 through April 2015, a total of 50 AA patients, meeting criteria to receive APBI as defined by the National Surgical Adjuvant Breast and Bowel Project B-39 (NASBP B-39), completed treatment with the SAVI breast brachytherapy device at Howard University Hospital...
January 9, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28063816/trends-in-the-use-of-implantable-accelerated-partial-breast-irradiation-for-ductal-carcinoma-in-situ-implications-of-the-recent-amendments-to-the-american-society-for-radiation-oncology-consensus-guidelines
#3
Waqar Haque, Vivek Verma, Anam Haque, E Brian Butler, Bin S Teh
PURPOSE: In 2009, the American Society for Radiation Oncology (ASTRO) published consensus recommendations that stated ductal carcinoma in situ (DCIS) patients were in a "cautionary" group for accelerated partial breast irradiation (APBI) and should not receive APBI outside of a clinical trial. However, very recently, ASTRO placed low-risk DCIS patients in the "suitable" category. Given this recent change, we aimed to use the Surveillance, Epidemiology, and End Results (SEER) database to evaluate past patterns of implantable APBI (IAPBI) utilization in women with DCIS...
January 4, 2017: Brachytherapy
https://www.readbyqxmd.com/read/28048645/su-f-t-404-dosimetric-advantages-of-flattening-free-beams-to-prone-accelerated-partial-breast-irradiation
#4
P Galavis, D Barbee, G Jozsef
PURPOSE: Prone accelerated partial breast irradiation (APBI) results in dose reduction to the heart and lung. Flattening filter free beams (FFF) reduce out of field dose due to the reduced scatter from the removal of the flattening filter and reduce the buildup region. The aim of this work is to evaluate the dosimetric advantages of FFF beams to prone APBI target coverage and reduction in dose to organs at risk. METHODS: Fifteen clinical prone APBI cases using flattened photon beams were retrospectively re-planned in Eclipse-TPS using FFF beams...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048639/tu-h-209-02-quality-assurance-and-qmp-for-brachytherapy-treatment-delivery-and-treatment-planning-system
#5
M Chilukuri
Learnings Objectives: 1. Although brachytherapy is the oldest form of radiation therapy, the rapid advancement of the methods of dose calculation, treatment planning and treatment delivery pushes us to keep updating our knowledge and experience to new procedures all the time. Our purpose is to present the newest applicators used in Accelerated Partial Breast Irradiation (APBI) and the techniques of using them for a maximum effective treatment. Our objective will be to get the user familiar with the Savi, Contura and ML Mammosite from the detailed description and measurements to cavity eval and choice or size, to acceptance tests and use of each...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048623/tu-fg-201-10-quality-management-of-accelerated-partial-breast-irradiation-apbi-plans
#6
H Ji, V Lorio, G Cernica, J Han, M Nurhussien, N Nasr, R Hong
PURPOSE: Since 2008, over 700 patients received high dose rate (HDR) APBI treatment at Virginia Hospital Center. The complexity involved in the planning process demonstrated a broad variation between patient geometry across all applicators, in relation to anatomical regions of interest. A quality management program instituting various metrics was implemented in March 2013 with the goal of ensuring an optimal plan is achieved for each patient. METHODS: For each plan, an in-house complexity index, geometric conformity index, and plan quality index were defined...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048104/su-f-t-58-dosimetric-evaluation-of-breast-tissue-composition-for-electronic-brachytherapy-bet-source-in-high-dose-rate-accelerated-partial-breast-apbi-irradiation
#7
W Taylor, D Johnson, S Ahmad, Y Chen
PURPOSE: To quantitatively evaluate the dosimetric impact of differing breast tissue compositions for electronic brachytherapy source for high dose rate accelerated partial breast irradiation. METHODS: A series of Monte Carlo Simulation were created using the GEANT4 toolkit (version 10.0). The breast phantom was modeled as a semi-circle with a radius of 5.0 cm. A water balloon with a radius of 1.5 cm was located in the phantom with the Xoft AxxentTM EBT source placed at center as a point source...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047974/tu-h-209-03-planning-and-treatment-delivery-for-apbi-using-savi-contura-and-ml-mammosite
#8
S Pella
Learnings Objectives: 1. Although brachytherapy is the oldest form of radiation therapy, the rapid advancement of the methods of dose calculation, treatment planning and treatment delivery pushes us to keep updating our knowledge and experience to new procedures all the time. Our purpose is to present the newest applicators used in Accelerated Partial Breast Irradiation (APBI) and the techniques of using them for a maximum effective treatment. Our objective will be to get the user familiar with the Savi, Contura and ML Mammosite from the detailed description and measurements to cavity eval and choice or size, to acceptance tests and use of each...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047861/su-f-t-317-skin-exposure-outside-the-treatment-field-during-treatment-of-breast-cancer-with-tri-co-60-mr-igrt-system
#9
J Park, J Kim, S Park, S Kim, K Shin
PURPOSE: To investigate exposure outside the treatment field when treating breast cancer with tri-Co-60 magnetic resonance (MR) image guided radiation therapy (IGRT) system. METHODS: A total of 7 patients who treated with accelerated partial breast irradiation (APBI) technique were selected prospectively for this study (prescription dose = 38.5 Gy in 10 fractions). Every patient treated with two plans, one was an initial plan and the other was an adaptive plan generated after finishing 5 fractions (a total of 14 plans)...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047707/su-g-201-14-is-maximum-skin-dose-a-reliable-metric-for-accelerated-partial-breast-irradiation-with-brachytherapy
#10
S Park, O Ragab, S Patel, Y Kim, J Demanes, M Kamrava
PURPOSE: To evaluate the reliability of the maximum point dose (Dmax) to the skin surface as a dosimetric constraint, we investigated the correlation between Dmax at the skin surface and dose metrics at various definitions of skin thickness. METHODS: 42 patients treated with APBI using a Strut Adjusted Volume Implant (SAVI) applicator between 2010 and 2014 were retrospectively reviewed. Target (PTV_EVAL) and organs at risk (OARs: skin, lung, and ribs) were delineated on a CT following NSABP B-39 guidelines...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047662/su-f-t-537-prone-breast-accelerated-partial-breast-irradiation-using-non-coplanar-volumetric-arc-therapy
#11
G Beninati, J Barbiere, L Godfrey, A Ndlovu
PURPOSE: To demonstrate that Volumetric Modulated Arc Therapy (VMAT) can be an alternative technique to Brachytherapy Accelerated Partial Breast Irradiation (APBI) for treating large breasted women. The non-coplanar VMAT technique uses a commercially available couch and a small number of angles. This technique with the patient in the prone position can reduce high skin and critical structure doses in large breasted women, which are usually associated with Brachytherapy APBI. METHODS: Philips Pinnacle treatment planning system with Smart Arc was used to plan a left sided laterally located excision cavity on a standard prone breast patient setup...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047487/su-f-t-01-optimization-of-the-accelerated-partial-breast-brachytherapy-fractionation-with-consideration-of-physical-doses-to-tumor-and-organ-at-risk
#12
W Fu, M Huq
PURPOSE: The accelerated partial breast irradiation (APBI) with brachytherapy prescribes 34Gy to be delivered in 10 fractions over 5 consecutive working days without considering the physical dose to the target and organs at risk (OARs) for an individual patient. The purpose of this study is to optimize the fractionation scheme by evaluating the radiation effect on tumor and OARs with a modified linear-quadratic (LQ) model based on dose-volume histograms (DVHs). METHODS: Five breast patients treated with multilumen balloon brachytherapy were selected...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047443/su-f-t-19-the-consistency-dosimetric-analysis-of-the-accelerated-breast-brachytherapy
#13
J Pinder, S Chandrasekara, S Pella
PURPOSE: To assess the best approach in accept a treatment plan for APBI Savi patients. Should we run a treatment verification test prior to delivering it to the patient? Should we check each CT scan in regards to the initial one in dosimetrical terms? Do we need deformable registration and adaptive planning for each fraction? These are the questions we want to answer running a dosimetric analysis of the dose variances for APBI treatments who receive 10 fractions and no re-planning has been done being considered unnecessary with today's means of assessment...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047304/tu-d-201-06-hdr-plan-prechecks-using-eclipse-scripting-api
#14
G Palaniswaamy, A Morrow, S Kim, D Rangaraj
PURPOSE: Automate brachytherapy treatment plan quality check using Eclipse v13.6 scripting API based on pre-configured rules to minimize human error and maximize efficiency. METHODS: The HDR Precheck system is developed based on a rules-driven approach using Eclipse scripting API. This system checks for critical plan parameters like channel length, first source position, source step size and channel mapping. The planned treatment time is verified independently based on analytical methods...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047258/tu-h-209-00-planning-and-delivering-hdr-apbi-treatments
#15
Angelina Bacala
Learnings Objectives: 1. Although brachytherapy is the oldest form of radiation therapy, the rapid advancement of the methods of dose calculation, treatment planning and treatment delivery pushes us to keep updating our knowledge and experience to new procedures all the time. Our purpose is to present the newest applicators used in Accelerated Partial Breast Irradiation (APBI) and the techniques of using them for a maximum effective treatment. Our objective will be to get the user familiar with the Savi, Contura and ML Mammosite from the detailed description and measurements to cavity eval and choice or size, to acceptance tests and use of each...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046874/su-f-p-46-comparative-study-between-two-normalization-prescriptions-for-accelerated-partial-breast-irradiation-a-dosimetric-study
#16
P Agarwal, D Sharma, A Gandhi, A Binjola, V Subramani, S Chander
PURPOSE: To compare the Accelerated Partial Breast Irradiation (APBI) plan with the normalized basal dose points and 5mm box prescription. METHODS: Five patients of APBI were planned twice in Oncentra Master planning TPS (Version 4.3) using TG-43 algorithm. The number of catheters for all the patients was 10 to 16 and implant plane 2 to 3. For planning all catheters were reconstructed. Source loading was done as per HR-CTV contoured. The HR-CTV volume range was from 75cc to 182cc...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046788/su-f-t-60-a-quick-dose-calculation-check-for-accuboost-breast-treatment
#17
A Sen
PURPOSE: Accuboost treatment planning uses dwell times from a nomogram designed with Monte Carlo calculations for round and D-shaped applicators. A quick dose calculation method has been developed for verification of the HDR Brachytherapy dose as a second check. METHODS: Accuboost breast treatment uses several round and D-shaped applicators to be used non-invasively with an Ir-192 source from a HDR Brachytherapy afterloader after the breast is compressed in a mammographic unit for localization...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046741/su-f-j-87-impact-of-the-dosimetric-consequences-from-minimal-displacements-throughout-the-treatment-time-in-apbi-with-savi-applicators
#18
S Chandrasekara, S Pella, M Hyvarinen, J Pinder
PURPOSE: To assess the variation in dose received by the organs at risk (OARs) due to inter-fractional motion by SAVI to determine the importance of providing proper immobilization METHODS: An analysis of 15 patients treated with SAVI applicators were considered for this study. Treatment planning teams did not see significant changes in their CT scans through scout images and initial treatment plan was used for the entire treatment. These scans, taken before each treatment were imported in to the treatment planning system and were fused together with respective to the applicator, using landmark registration...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046584/tu-h-209-01-acceptance-procedures-for-savi-contura-and-ml-mammosite
#19
A Kyriacou
Learnings Objectives: 1. Although brachytherapy is the oldest form of radiation therapy, the rapid advancement of the methods of dose calculation, treatment planning and treatment delivery pushes us to keep updating our knowledge and experience to new procedures all the time. Our purpose is to present the newest applicators used in Accelerated Partial Breast Irradiation (APBI) and the techniques of using them for a maximum effective treatment. Our objective will be to get the user familiar with the Savi, Contura and ML Mammosite from the detailed description and measurements to cavity eval and choice or size, to acceptance tests and use of each...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28044202/cosmetic-changes-following-surgery-and-accelerated-partial-breast-irradiation-using-hdr-interstitial-brachytherapy-evaluation-by-a%C3%A2-multidisciplinary-multigender-committee
#20
Tamer Soror, György Kovács, Nina Seibold, Corinna Melchert, Kristin Baumann, Eike Wenzel, Suzana Stojanovic-Rundic
BACKGROUND: Patients with early-stage breast cancer can benefit from adjuvant accelerated partial breast irradiation (APBI) following breast-conserving surgery (BCS). This work reports on cosmetic results following APBI using multicatheter high-dose-rate interstitial brachytherapy (HDR-IBT). PATIENTS AND METHODS: Between 2006 and 2014, 114 patients received adjuvant APBI using multicatheter HDR-IBT. For each patient, two photographs were analyzed: the first was taken after surgery (baseline image) and the second at the last follow-up visit...
January 2, 2017: Strahlentherapie und Onkologie: Organ der Deutschen Röntgengesellschaft ... [et Al]
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