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Brachytherapy

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https://www.readbyqxmd.com/read/29239813/experimental-assessment-of-the-advanced-collapsed-cone-engine-for-scalp-brachytherapy-treatments
#1
Brie Cawston-Grant, Hali Morrison, Ron S Sloboda, Geetha Menon
PURPOSE: To experimentally assess the performance of the Advanced Collapsed-cone Engine (ACE) for 192Ir high-dose-rate brachytherapy treatment planning of nonmelanoma skin cancers of the scalp. METHODS AND MATERIALS: A layered slab phantom was designed to model the head (skin, skull, and brain) and surface treatment mold using tissue equivalent materials. Six variations of the phantom were created by varying skin thickness, skull thickness, and size of air gap between the mold and skin...
November 24, 2017: Brachytherapy
https://www.readbyqxmd.com/read/29239812/dosimetric-impact-of-inter-observer-catheter-reconstruction-variability-in-ultrasound-based-high-dose-rate-prostate-brachytherapy
#2
Alexandru Nicolae, Jure Murgic, Ivan Kruljac, Lior Dubnitzky, Laura D'Alimonte, Lin Lu, Aaron Cumal, Niki Law, Gerard Morton, Andrew Loblaw, Hans T Chung, Ananth Ravi
PURPOSE: To investigate the dosimetric impact of interobserver catheter reconstruction variability in transrectal ultrasound-guided prostate high-dose-rate (HDR) brachytherapy. METHODS AND MATERIALS: Twenty consecutive patients with intermediate- or high-risk prostate cancer were treated with a single, 15-Gy HDR brachytherapy boost as part of this study. The treated plan was used as the study reference plan (PR). Three expert treatment planners (observers) manually reconstructed the catheter paths on the static three-dimensional transrectal ultrasound images, and new plans were generated from the updated positions (POBS); subsequently, the dwell time and positions from the POBS plans were superimposed on the PR catheter paths to evaluate the dosimetric effect of the interobserver variations (PEVAL)...
November 24, 2017: Brachytherapy
https://www.readbyqxmd.com/read/29237906/clinical-efficacy-of-preoperative-vaginal-intracavitary-irradiation-for-stage-ib2-and-iia-cervical-cancer
#3
Fengshuang Li, Yumei Wu, Weimin Kong, Jiandong Wang, Xia Hao, Juwei Niu, Laifu Bai
OBJECTIVE: The purpose of this study was to evaluate the clinical efficacy of preoperative vaginal intracavitary irradiation for Stage Ib2 and IIa cervical cancer. MATERIALS AND METHODS: From June 2008 to June 2014, data from 78 Stage Ib2 and IIa cervical cancer patients (age ≤75 years) with a diameter of local lesions >4 cm were collected in our hospital. Before treatment, all cases were confirmed by biopsy. The patients' general state was good, Karnofsky Performance Score ≥90, heart and lung functioning was normal, and patients were able to tolerate the surgery...
2017: Journal of Cancer Research and Therapeutics
https://www.readbyqxmd.com/read/29237897/brachytherapy-with-iodine-125-seeds-for-bone-metastases
#4
Wei Wang, Zhonghao Liu, Jingrun Zhu, Chuanwang Wu, Mingyang Liu, Yongzheng Wang, Wujie Wang, Bin Liu, Yuliang Li
OBJECTIVE: To evaluate the treatment safety and efficacy of iodine 125 (I125) seeds implantation in patients with bone metastases and assess the availability of quality of life (QOL) as an index for efficacy evaluation. PATIENTS AND METHODS: The study enrolled 98 patients with 133 bone metastases from July 2010 to January 2016, who had undergone computed tomography-guided brachytherapy with I125 seeds. Brief pain inventory was administered to assess the degree of pain at the preoperative (W0) and postoperative 2 weeks, 4 weeks, 8 weeks, 12 weeks, and 24 weeks (W2, W4, W8, W12, and W24)...
2017: Journal of Cancer Research and Therapeutics
https://www.readbyqxmd.com/read/29234720/radiation-induced-circumscribed-superficial-morphea-after-brachytherapy-for-endometrial-adenocarcinoma
#5
Apoorva Trivedi, Corey M DeWitt, Laura McGevna
Radiation-induced morphea (RIM) is a rare and underrecognized complication of radiation therapy that most commonly occurs in women after treatment for breast cancer. Although not fully understood, RIM is hypothesized to arise from an increase in cytokines that stimulate collagen production and extracellular matrix formation. Most documented cases of RIM occur 1 year after radiation therapy and are localized to areas that were treated for breast cancer. We report on a case of a female patient with stage IB endometrial adenocarcinoma who was treated with 24 Gray of adjuvant brachytherapy...
December 2017: International Journal of Women's Dermatology
https://www.readbyqxmd.com/read/29233573/re-irradiation-in-gynaecological-malignancies-a-review
#6
A H Sadozye
Re-irradiation in gynaecological malignancies has become an increasingly frequent consideration. This can be delivered in multiple settings, with the most common being a patient with a history of cervical cancer developing a new vaginal cancer or endometrial cancer with local recurrence after hysterectomy and adjuvant pelvic radiation. A systematic review of the literature has unearthed a handful of reports, most delivering brachytherapy, with a small number on both external beam radiotherapy and stereotactic ablative radiotherapy...
December 9, 2017: Clinical Oncology: a Journal of the Royal College of Radiologists
https://www.readbyqxmd.com/read/29229377/dosimetric-effects-of-saline-versus-water-filled-balloon-applicators-for-iort-using-the-model-s700-electronic-brachytherapy-source
#7
Gage Redler, Alistair Templeton, Heming Zhen, Julius Turian, Damian Bernard, James C H Chu, Katherine L Griem, Yixiang Liao
PURPOSE: The Xoft Axxent Electronic Brachytherapy System (Xoft, Inc., San Jose, CA) is a viable option for intraoperative radiation therapy (IORT) treatment of early-stage breast cancer. The low-energy (50-kVp) X-ray source simplifies shielding and increases relative biological effectiveness but increases dose distribution sensitivity to medium composition. Treatment planning systems typically assume homogenous water for brachytherapy dose calculations, including precalculated atlas plans for Xoft IORT...
December 8, 2017: Brachytherapy
https://www.readbyqxmd.com/read/29229327/dose-escalation-using-contact-x-ray-brachytherapy-after-external-beam-radiotherapy-as-nonsurgical-treatment-option-for-rectal-cancer-outcomes-from-a-single-center-experience
#8
Arthur Sun Myint, Fraser McLean Smith, Simon Gollins, Helen Wong, Christopher Rao, Karen Whitmarsh, Raj Sripadam, Paul Rooney, Michael Hershman, D Mark Pritchard
PURPOSE: To review the outcomes of rectal cancer patients treated with a nonsurgical approach using contact x-ray brachytherapy (CXB) when suspicious residual disease (≤3 cm) was present after external beam chemoradiation therapy/radiation therapy (EBCRT/EBRT). METHODS AND MATERIALS: Outcome data for rectal cancer patients referred to our institution from 2003 to 2012 were retrieved from an institutional database. These patients were referred after initial local multidisciplinary team discussion because they were not suitable for, or had refused, surgery...
October 20, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/29229325/prospective-phase-2-trial-of-permanent-seed-implantation-prostate-brachytherapy-for-intermediate-risk-localized-prostate-cancer-efficacy-toxicity-and-quality-of-life-outcomes
#9
Steven J Frank, Thomas J Pugh, Pierre Blanchard, Usama Mahmood, William J Graber, Rajat J Kudchadker, John W Davis, Jeri Kim, Haesun Choi, Patricia Troncoso, Deborah A Kuban, Seungtaek Choi, Sean McGuire, Karen E Hoffman, Hsiang-Chun Chen, Xuemei Wang, David A Swanson
PURPOSE: To report the efficacy, physician-reported toxicity, and patient-reported outcomes of men with intermediate-risk prostate cancer after brachytherapy in a prospective phase 2 trial. METHODS AND MATERIALS: This prospective phase 2 trial involved 300 patients with previously untreated prostate cancer treated from 2006 through 2013. Eligible patients had ≤cT2b (T3 excluded according to magnetic resonance imaging), Gleason score (GS) 6 with prostate-specific antigen (PSA) level 10-15 ng/mL, or GS 7 with PSA <10 ng/mL, and were treated with prostate brachytherapy (without hormonal therapy)...
October 12, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/29223507/limitations-in-learning-how-treatment-verifications-fail-and-what-to-do-about-it
#10
Susan Richardson, Bruce Thomadsen
PURPOSE: The purposes of this study were: to provide dialog on why classic incident learning systems have been insufficient for patient safety improvements, discuss failures in treatment verification, and to provide context to the reasons and lessons that can be learned from these failures. METHODS AND MATERIALS: Historically, incident learning in brachytherapy is performed via database mining which might include reading of event reports and incidents followed by incorporating verification procedures to prevent similar incidents...
December 6, 2017: Brachytherapy
https://www.readbyqxmd.com/read/29218275/outcomes-of-surgical-excision-and-brachytherapy-in-intractable-keloids
#11
Ahmadreza Taheri, Hojjat Molaei, Mehdi Aghili, Naser Rahmanpanah, Atefeh Mirmohseni
BACKGROUND: Keloids as unusual scars are injury remnants characterized by bizarre cosmetics and painful itching. This study assessed outcomes of surgical excision and brachytherapy in intractable keloids. METHODS: Six patients with 10 keloid lesions were followed up. Surgical excision was done with 1-2 mm margin, and then radiotherapy was undertaken in 3 divided fractions on days 0, 1 and 2 after surgery. Scar improvement was evaluated by patients and observer with scar assessment scale (POSAS)...
September 2017: World Journal of Plastic Surgery
https://www.readbyqxmd.com/read/29214067/malignant-central-airway-obstruction
#12
REVIEW
Lakshmi Mudambi, Russell Miller, George A Eapen
This review comprehensively describes recent advances in the management of malignant central airway obstruction (CAO). Malignant CAO can be a dramatic and devastating manifestation of primary lung cancer or metastatic disease. A variety of diagnostic modalities are available to provide valuable information to plan a therapeutic intervention. Clinical heterogeneity in the presentation of malignant CAO provides opportunities to adapt and utilize endoscopic technology and tools in many ways. Mechanical debulking, thermal tools, cryotherapy and airway stents are methods and instruments used to rapidly restore airway patency...
September 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/29209114/combined-endovascular-brachytherapy-sorafenib-and-transarterial-chemobolization-therapy-for-hepatocellular-carcinoma-patients-with-portal-vein-tumor-thrombus
#13
Zi-Han Zhang, Qing-Xin Liu, Wen Zhang, Jing-Qin Ma, Jian-Hua Wang, Jian-Jun Luo, Ling-Xiao Liu, Zhi-Ping Yan
AIM: To evaluate the safety and efficacy of combined endovascular brachytherapy (EVBT), transarterial chemoembolization (TACE), and sorafenib to treat hepatocellular carcinoma (HCC) patients with main portal vein tumor thrombus (MPVTT). METHODS: This single-center retrospective study involved 68 patients with unresectable HCC or those who were unfit for liver transplantation and percutaneous frequency ablation according to the BCLC classification. All patients had Child-Pugh classification grade A or B, Eastern Cooperative Oncology Group (ECOG) performance status of 0-2, and MPVTT...
November 21, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/29206662/surgery-versus-radiation-treatment-for-high-grade-neuroendocrine-cancer-of-uterine-cervix-a-surveillance-epidemiology-and-end-results-database-analysis
#14
Wei-Hsien Hou, Tim E Schultheiss, Jeffrey Y Wong, Mark T Wakabayashi, Yi-Jen Chen
OBJECTIVES: The objective of this study was to assess treatment and other factors impacting survival in cervical high-grade neuroendocrine carcinoma (HGNEC). METHODS/MATERIALS: We identified patients with cervical HGNECs diagnosed during 1988 to 2012 in the Surveillance Epidemiology and End Results database. We determined overall survival by International Federation of Gynecology and Obstetrics stages and by local treatment modalities, that is, radical surgery versus external beam radiation treatment (EBRT) plus brachytherapy using Kaplan-Meier analysis with log-rank test...
December 4, 2017: International Journal of Gynecological Cancer
https://www.readbyqxmd.com/read/29205161/-low-dose-rate-brachytherapy-in-low-and-middle-risk-prostate-cancer-results-and-impact-on-quality-of-life-with-5-year-follow-up
#15
Felipe Balbontín, Pablo Pizzi, Andrea Canals, Isabel Alliende
Low dose rate brachytherapy (LDR-Br) with radioactive isotopes is a curative treatment and has shown to be comparable for the management of localized prostate cancer (PCa) to more conventional treatments such as radical prostatectomy or external beam radiotherapy, but with fewer side effects. The aim of this study is to show the global, specific and biochemical recurrence-free survival in 193 patients undergoing low dose rate Brachytherapy with permanent implants with iodine 125 and analyze the quality of life impact...
December 2017: Archivos Españoles de Urología
https://www.readbyqxmd.com/read/29204171/magnetic-resonance-imaging-metal-artifact-reduction-for-eye-plaque-patient-with-dental-braces
#16
H Michael Gach, Stacie L Mackey, Sana Rehman, Mo Kadbi, Jacqueline E Zoberi, Jose Garcia-Ramirez, Perry W Grigsby
Purpose: To determine if metal artifact reduction can minimize magnetic susceptibility artifacts in the orbits for an eye plaque brachytherapy patient with metallic dental braces. Material and methods: A 62-year-old female patient with a choroidal melanoma in the right eye received a 1.5 T magnetic resonance imaging (MRI) simulation for 3D eye plaque brachytherapy planning. The protocol included conventional 3D T1-weighted and 2D T2-weighted MRIs. A vendor-supplied T2-weighted metal artifact reduction sequence was added to the protocol to reduce magnetic susceptibility artifacts from the metallic dental braces...
October 2017: Journal of Contemporary Brachytherapy
https://www.readbyqxmd.com/read/29204170/locally-advanced-squamous-cell-cervical-cancer-in-a-patient-with-septate-uterus
#17
Guler Yavas, Cagdas Yavas, Gokcen Inan
A 33-year-old premenopausal multiparous woman with the history of septate uterus was referred to the hospital with menorrhagia and inter-menstrual bleeding occurring for the last 6 months. Work-up revealed a stage IIB cervical cancer. The patient underwent curative chemo/radiotherapy. The patient's septate uterus presented several difficulties during application. Brachytherapy was applied using standard computed tomography-compatible tandem and ovoids. The high-risk clinical target volume (HR-CTV), intermediate risk CTV, and organs at risk were contoured according to the Groupe Européen de Curiethérapie - European Society for Radiology and Oncology (GEC-ESTRO) guidelines...
October 2017: Journal of Contemporary Brachytherapy
https://www.readbyqxmd.com/read/29204169/independent-assessment-of-source-position-for-gynecological-applicator-in-high-dose-rate-brachytherapy
#18
Hiroyuki Okamoto, Satoshi Nakamura, Shie Nishioka, Kotaro Iijima, Akihisa Wakita, Yukinao Abe, Naoki Tohyama, Shinji Kawamura, Toshiyuki Minemura, Jun Itami
Purpose: The aim of this study is to describe a phantom designed for independent examination of a source position in brachytherapy that is suitable for inclusion in an external auditing program. Material and methods: We developed a phantom that has a special design and a simple mechanism, capable of firmly fixing a radiochromic film and tandem-ovoid applicators to assess discrepancies in source positions between the measurements and treatment planning system (TPS)...
October 2017: Journal of Contemporary Brachytherapy
https://www.readbyqxmd.com/read/29204168/pre-plan-technique-feasibility-in-multi-interstitial-endocavitary-perineal-gynecological-brachytherapy
#19
Silvia Rodriguez, Antonio Otal, Jose Richart, Jose Perez-Calatayud, Manuel Santos
Purpose: To present the implementation of a magnetic resonance imaging (MRI) pre-planning technique in multi-interstitial perineal and endocavitary gynecological brachytherapy. Material and methods: We used a new fully MRI-compatible applicator that is capable to engage titanium needles, and an intrauterine tandem, developed in our department for the treatment of gynecological cervical cancer patients. This applicator is an attempt to combine the technical advantages of the Martinez universal perineal interstitial template (MUPIT) with the improvement in dose distribution by adding an intrauterine probe with the imaging advantages of MRI-based brachytherapy, thus preserving the stability, geometry, and robustness of the implant, avoiding possible errors of free-hand needle placement...
October 2017: Journal of Contemporary Brachytherapy
https://www.readbyqxmd.com/read/29204167/interstitial-brachytherapy-for-orbital-soft-tissue-sarcoma-an-innovative-technique
#20
Siddhartha Laskar, Avinash Pilar, Nehal Khanna, Yogesh Ghadi
Purpose: To report an innovative technique of interstitial brachytherapy developed for treatment of orbital soft tissue tumors. Material and methods: A 4-month-old child diagnosed with rhabdomyosarcoma of orbit was treated with multiagent chemotherapy (CTh) and brachytherapy. Pre-planning computed tomography (CT) images were obtained and clinical target volume (CTV) was defined using the pre-treatment magnetic resonance imaging (MRI). Brachytherapy plan was generated for deciding optimal catheter placement...
October 2017: Journal of Contemporary Brachytherapy
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