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https://www.readbyqxmd.com/read/28816169/long-term-results-of-a-randomized-trial-comparing-iridium-implant-plus-external-beam-radiation-therapy-with-external-beam-radiation-therapy-alone-in-node-negative-locally-advanced-cancer-of-the-prostate
#1
Ian S Dayes, Sameer Parpia, Jaclyn Gilbert, Jim A Julian, Ian R Davis, Mark N Levine, Jinka Sathya
PURPOSE: To determine the impact on long-term survival from the addition of brachytherapy to external beam radiation therapy (EBRT) in patients with prostate cancer. METHODS AND MATERIALS: Between 1992 and 1997, 104 men with cT2-3, surgically staged node-negative prostate cancer were randomized to receive either EBRT (40 Gy/20 fractions) with iridium implant (35 Gy/48 hours) or EBRT alone (66 Gy/33 fractions) to the prostate. According to T stage, Gleason score, and prostate-specific antigen level, 60% of patients had high-risk disease...
September 1, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/28816149/a-multi-institution-retrospective-analysis-of-cervix-intracavitary-brachytherapy-treatments-part-1-is-eqd2-good-enough-for-reporting-radiobiological-effects
#2
Emma C Fields, Rakhi Melvani, George Hajdok, David D'Souza, Bernard Jones, Kelly Stuhr, Quentin Diot, Christine M Fisher, Nitai Mukhopadhyay, Dorin Todor
PURPOSE: When brachytherapy doses are reported or added, biologically effective dose (BED) minimum dose covering 90% of the volume (D90) is used as if dose is delivered uniformly to the target. Unlike BED(D90), equivalent uniform BED (EUBED) and generalized biologically equivalent uniform dose (gBEUD) are quantities that integrate dose inhomogeneity. Here we compared BED(D90) and equivalent uniform BED (EUBED)/gBEUD in 3 settings: (1) 2 sites using tandem and ovoid (T&O) but different styles of implants; (2) 2 sites using different devices-T&O and tandem and ring (T&R)-and different styles; and (3) the same site using T&O and T&R with the same style...
September 1, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/28816137/high-dose-rate-brachytherapy-in-the-management-of-operable-rectal-cancer-a-systematic-review
#3
Hannah Buckley, Charles Wilson, Thankamma Ajithkumar
PURPOSE: To evaluate the role of high-dose-rate endorectal brachytherapy (HDREBT) in the preoperative and definitive management of operable rectal cancer in terms of clinical outcomes and toxicities using a systematic review. METHODS AND MATERIALS: A review of published articles from January 1990 to December 2016 was conducted using the PubMed, Embase, and Scopus databases using the search terms "rectal" or "rectum" in combination with "brachytherapy," "high dose rate," "HDR," and "endorectal...
September 1, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/28812919/comparison-of-primary-and-secondary-enucleation-for-uveal-melanoma
#4
Chau M Pham, Philip L Custer, Steven M Couch
We investigated operative course and post-operative findings of patients undergoing primary enucleation for uveal melanoma versus those requiring secondary enucleation after brachytherapy. A retrospective chart review was performed with IRB approval on patients receiving treatment for uveal melanoma. Patients with enucleation as initial treatment and patients enucleated after plaque brachytherapy were analyzed for demographic data, operative course, and post-enucleation outcome. Further cause analysis for secondary enucleations was investigated...
August 16, 2017: Orbit
https://www.readbyqxmd.com/read/28808925/recommendations-of-the-spanish-brachytherapy-group-geb-of-spanish-society-of-radiation-oncology-seor-and-the-spanish-society-of-medical-physics-sefm-for-high-dose-rate-hdr-non-melanoma-skin-cancer-brachytherapy
#5
S Rodríguez, M Arenas, C Gutierrez, J Richart, J Perez-Calatayud, F Celada, M Santos, A Rovirosa
Clinical indications of brachytherapy in non-melanoma skin cancers, description of applicators and dosimetry recommendations are described based on the literature review, clinical practice and experience of Spanish Group of Brachytherapy and Spanish Society of Medical Physics reported in the XIV Annual Consensus Meeting on Non Melanoma Skin Cancer Brachytherapy held in Benidorm, Alicante (Spain) on October 21st, 2016. All the recommendations for which consensus was achieved are highlighted in blue. Regular and small surfaces may be treated with Leipzig, Valencia, flap applicators or electronic brachytherapy (EBT)...
August 14, 2017: Clinical & Translational Oncology
https://www.readbyqxmd.com/read/28807749/high-dose-rate-interstitial-brachytherapy-boost-in-inoperable-locally-advanced-tongue-carcinoma
#6
Miguel Angel Santos, Jose Luis Guinot, Maria Isabel Tortajada, Paula Santamaría, Valentin Campo, Laura Oliver, Marina Peña, Leoncio Arribas
PURPOSE: Locally advanced tongue carcinomas (LATCs) in inoperable lesions are managed with external beam radiation therapy (EBRT) and chemotherapy. In our institution, the boost to the gross tumor volume is delivered with high-dose-rate brachytherapy (HDR-BT) after EBRT. We review the outcome of these patients when HDR-BT is added as a boost. METHODS AND MATERIALS: From May 2000 to December 2014, a total of 24 patients with LATC, nonsurgical oral tongue, and base of tongue carcinomas were treated with EBRT and with interstitial plastic tubes for brachytherapy; median dose was 18-24 Gy in 6-8 fractions after 50-60 Gy of EBRT...
August 11, 2017: Brachytherapy
https://www.readbyqxmd.com/read/28807748/dosimetric-analysis-and-preliminary-clinical-result-of-image-guided-brachytherapy-with-or-without-hybrid-technique-for-cervical-cancer-using-varisource-titanium-ring-applicator-with-siriraj-ring-cap
#7
Pittaya Dankulchai, Suphalerk Lohasammakul, Janjira Petsuksiri, Pitchayut Nakkrasae, Lalida Tuntipumiamorn, Chumpot Kakanaporn, Yaowalak Chansilpa
PURPOSE: Titanium ring cap applicator (VariSource) was applied in treating cervical cancer patients by using image-guided brachytherapy (IGBT). However, its sizes appeared to be relatively large for most of our patients. Thus, we have developed a specific applicator "Siriraj Ring Cap," which is slightly smaller and more suitable for our patients. This study was to evaluate effectiveness of this equipment. METHODS AND MATERIALS: Locally advanced cervical cancer patients were treated with external beam radiation therapy with or without concomitant chemotherapy...
August 11, 2017: Brachytherapy
https://www.readbyqxmd.com/read/28807747/pretreatment-3t-multiparametric-mri-staging-predicts-for-biochemical-failure-in-high-risk-prostate-cancer-treated-with-combination-high-dose-rate-brachytherapy-and-external-beam-radiotherapy
#8
John V Hegde, D Jeffrey Demanes, Darlene Veruttipong, Jagdeep Raince, Sang-June Park, Steven S Raman, Nicholas G Nickols, Christopher R King, Amar U Kishan, Michael L Steinberg, Mitchell Kamrava
PURPOSE: To determine whether pretreatment 3T multiparametric MRI (mpMRI) staging impacts biochemical recurrence-free survival (BRFS) or distant metastasis-free survival (DMFS) for men with high-risk prostate cancer treated with combination high-dose-rate (HDR) brachytherapy and external beam radiation therapy (EBRT). MATERIALS AND METHODS: This institutional review board-approved retrospective study included a cohort of 37 men with high-risk prostate cancer treated with HDR brachytherapy and EBRT after 3T mpMRI...
August 11, 2017: Brachytherapy
https://www.readbyqxmd.com/read/28807532/multicenter-evaluation-of-biochemical-relapse-free-survival-outcomes-for-intraoperatively-planned-prostate-brachytherapy-using-an-automated-delivery-system
#9
Kevin Martell, Siraj Husain, Daniel Taussky, Steve Angyalfi, Guila Delouya, Philippe Després, Luc Beaulieu, Andre-Guy Martin, Eric Vigneault
PURPOSE: To report biochemical recurrence in prostate cancer treated with intraoperatively planned low-dose-rate prostate brachytherapy using an automated delivery system (IO-LDRB). METHODS AND MATERIALS: Between 2003 and 2013, 2608 patients from 3 centers were treated with IO-LDRB as single-modality treatment for low or low-tier intermediate-risk prostate cancer. Databases from the 3 centers have been analyzed. These independent databases were collected prospectively...
June 6, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/28807441/whole-body-dose-and-energy-measurements-in-radiotherapy-by-a-combination-of-lif-mg-cu-p-and-lif-mg-ti
#10
Pascal Hauri, Uwe Schneider
PURPOSE: Long-term survivors of cancer who were treated with radiotherapy are at risk of a radiation-induced tumor. Hence, it is important to model the out-of-field dose resulting from a cancer treatment. These models have to be verified with measurements, due to the small size, the high sensitivity to ionizing radiation and the tissue-equivalent composition, LiF thermoluminescence dosimeters (TLD) are well-suited for out-of-field dose measurements. However, the photon energy variation of the stray dose leads to systematic dose errors caused by the variation in response with radiation energy of the TLDs...
August 11, 2017: Zeitschrift Für Medizinische Physik
https://www.readbyqxmd.com/read/28806948/assessment-of-lower-urinary-symptom-flare-with-overactive-bladder-symptom-score-and-international-prostate-symptom-score-in-patients-treated-with-iodine-125-implant-brachytherapy-long-term-follow-up-experience-at-a-single-institute
#11
Makito Miyake, Nobumichi Tanaka, Isao Asakawa, Shunta Hori, Yosuke Morizawa, Yoshihiro Tatsumi, Yasushi Nakai, Takeshi Inoue, Satoshi Anai, Kazumasa Torimoto, Katsuya Aoki, Masatoshi Hasegawa, Tomomi Fujii, Noboru Konishi, Kiyohide Fujimoto
BACKGROUND: The aim of this study was to evaluate the combined use of the overactive bladder symptom score (OABSS) and International Prostate Symptom Score (IPSS) as an assessment tool for urinary symptom flare after iodine-125 ((125)I) implant brachytherapy. The association between urinary symptom flare and prostate-specific antigen (PSA) bounce was investigated. METHODS: Changes in the IPSS and OABSS were prospectively recorded in 355 patients who underwent seed implantation...
August 14, 2017: BMC Urology
https://www.readbyqxmd.com/read/28803217/accurate-model-based-segmentation-of-gynecologic-brachytherapy-catheter-collections-in-mri-images
#12
Andre Mastmeyer, Guillaume Pernelle, Ruibin Ma, Lauren Barber, Tina Kapur
The gynecological cancer mortality rate, including cervical, ovarian, vaginal and vulvar cancers, is more than 20,000 annually in the US alone. In many countries, including the US, external-beam radiotherapy followed by high dose rate brachytherapy is the standard-of-care. The superior ability of MR to visualize soft tissue has led to an increase in its usage in planning and delivering brachytherapy treatment. A technical challenge associated with the use of MRI imaging for brachytherapy, in contrast to that of CT imaging, is the visualization of catheters that are used to place radiation sources into cancerous tissue...
July 18, 2017: Medical Image Analysis
https://www.readbyqxmd.com/read/28802913/salvage-high-dose-rate-brachytherapy-and-external-beam-radiotherapy-for-isolated-vaginal-recurrences-of-endometrial-cancer-with-no-prior-adjuvant-therapy
#13
Christopher H Chapman, Kaveh Maghsoudi, Ramey D Littell, Lee-May Chen, I-Chow Hsu
PURPOSE: To evaluate clinical outcomes for isolated vaginal recurrence of endometrial cancer without adjuvant therapy treated with salvage external beam radiation therapy (EBRT) and high-dose-rate CT-based inverse-planned brachytherapy. METHODS AND MATERIALS: Thirty women were included in this retrospective study. Median time to first recurrence was 16.7 months, and median age at recurrence was 73 years. Initial grade was 1 or 2 in 19 patients (63%), and 2009 FIGO stage IA in 19 patients...
August 9, 2017: Brachytherapy
https://www.readbyqxmd.com/read/28802187/radiotherapy-access-in-belgium-how-far-are-we-from-evidence-based-utilisation
#14
Y Lievens, H De Schutter, K Stellamans, M Rosskamp, L Van Eycken
INTRODUCTION: Underutilisation of radiotherapy has been observed worldwide. To evaluate the current situation in Belgium, optimal utilisation proportions (OUPs) adopted from the European SocieTy for Radiotherapy and Oncology - Health Economics in Radiation Oncology (ESTRO-HERO) project were compared to actual utilisation proportions (AUPs) and with radiotherapy advised during the multidisciplinary cancer team (MDT) meetings. In addition, the impact of independent variables was analysed...
August 9, 2017: European Journal of Cancer
https://www.readbyqxmd.com/read/28801116/comparative-results-of-three-short-brachytherapy-schedules-as-exclusive-treatment-in-postoperative-endometrial-carcinoma
#15
Ángeles Rovirosa, Antonio Herreros, Cristina Camacho, Carlos Ascaso, Joan Sánchez, Stepphania Cortés, Sebastià Sabater, Jordi Solà, Aureli Torné, Meritxell Arenas
PURPOSE: To compare vaginal control and treatment toxicity of three different high-dose-rate brachytherapy schedules as exclusive treatment in postoperative endometrial carcinoma. METHODS AND MATERIALS: From 2003 to 2015, three different schedules were used as postoperative treatment for 146 patients (p) with intermediate-risk endometrial carcinoma. Group 1 (41 p): six fractions of 4-6 Gy, 3-4 fractions per week; Group 2 (59 p): four fractions of 5-6 Gy administered daily; Group 3 (46 p): 6 Gy × 3 fractions in three consecutive days...
August 8, 2017: Brachytherapy
https://www.readbyqxmd.com/read/28801115/incidence-and-prediction-of-seed-migration-to-the-chest-after-iodine-125-brachytherapy-for-hepatocellular-carcinoma
#16
Junqing Lin, Weizhu Yang, Na Jiang, Qubin Zheng, Jingyao Huang, Ning Huang, Ang Li, Han Jiang
PURPOSE: The aims were to determine the incidence of seed migration to the chest and to analyze the predictive factors after iodine-125 brachytherapy for hepatocellular carcinoma. METHODS AND MATERIALS: Three hundred ninety-nine patients with hepatocellular carcinoma underwent iodine-125 seed brachytherapy. After seed implantation, chest X-ray radiograph or computerized tomography were undertaken to assess the occurrence and location of seed migration at 3 months after brachytherapy...
August 8, 2017: Brachytherapy
https://www.readbyqxmd.com/read/28798812/clinical-epidemiological-and-therapeutic-profile-of-patients-with-a-retinoblastoma-diagnosis-experience-in-the-costa-rica-national-children-s-hospital-oncology-unit-from-january-2009-to-december-2015
#17
Jennie Chen Lo, Carlos Rodríguez, Rigoberto Monestel, Arnoldo Zúñiga
INTRODUCTION: Retinoblastoma represents only 3% of paediatric cancers, but it is the most prevalent intraocular tumour in this population. It develops in the retina as a primitive neuroectodermal tumour that affects development during gestation. The tumour presents in two different forms depending on whether or not it expresses a genetic modification. For patients diagnosed at preschool age, 75% are unilateral non-hereditary cases. While enucleation is the preferred treatment for advanced stages of the tumour, other modalities, such as systemic and intraocular chemotherapy, radiotherapy and local treatments with thermotherapy, cryotherapy, and brachytherapy can be used to try to preserve the eye...
2017: Ecancermedicalscience
https://www.readbyqxmd.com/read/28796645/on-the-use-of-particle-filters-for-electromagnetic-tracking-in-high-dose-rate-brachytherapy
#18
Theresa Ida Götz, Godehard Lahmer, Tobias Brandt, Karoline Kallis, Vratislav Strnad, Christoph Bert, Bernhard Hensel, Ana Maria Tome, Elmar W Lang
Modern radiotherapy of female breat cancers often employ high dose rate Brachytherapy, where a radioactive source is moved inside catheters, implanted in the female breast, according to a prescribed treatment plan. Source localization relative to the patient's anatomy is determined with solenoid sensors whose spatial positions are measured with an electromagnetic tracking system. Precise sensor dwell position determination is of utmost importance to assure irradiation of the cancerous tissue according to the treatment plan...
August 10, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28780842/-effect-of-image-fusion-technology-of-radioactive-particles-implantation-before-and-after-the-planning-target-and-dosimetry
#19
Y L Jiang, J P Yu, H T Sun, F X Guo, Z Ji, J H Fan, L J Zhang, X Li, J J Wang
Objective: To compare the post-implant target volumes and dosimetric evaluation with pre-plan, the gross tumor volume(GTV) by CT image fusion-based and the manual delineation of target volume in CT guided radioactive seeds implantation. Methods: A total of 10 patients treated under CT-guidance (125)I seed implantation during March 2016 to April 2016 were analyzed in Peking University Third Hospital.All patients underwent pre-operative CT simulation, pre-operative planning, implantation seeds, CT scanning after seed implantation and dosimetric evaluation of GTV...
August 1, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28777451/challenges-in-mr-only-seed-localization-for-postimplant-dosimetry-in-permanent-prostate-brachytherapy
#20
Frank Zijlstra, Marinus A Moerland, Jochem R N van der Voort van Zyp, Juus L Noteboom, Max A Viergever, Peter R Seevinck
PURPOSE: An MR-only postimplant dosimetry workflow for low dose rate (LDR) brachytherapy could reduce patient burden, improve accuracy, and improve cost efficiency. However, localization of brachytherapy seeds on MRI scans remains a major challenge for this type of workflow. In this study, we propose and validate an MR-only seed localization method, and identify remaining challenges. METHODS AND MATERIALS: The localization method was based on template matching of simulations of complex-valued imaging artifacts around metal brachytherapy seeds...
August 4, 2017: Medical Physics
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