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Journal of Contemporary Brachytherapy

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https://www.readbyqxmd.com/read/27895688/electromagnetic-tracking-for-treatment-verification-in-interstitial-brachytherapy
#1
REVIEW
Christoph Bert, Markus Kellermeier, Kari Tanderup
Electromagnetic tracking (EMT) is used in several medical fields to determine the position and orientation of dedicated sensors, e.g., attached to surgical tools. Recently, EMT has been introduced to brachytherapy for implant reconstruction and error detection. The manuscript briefly summarizes the main issues of EMT and error detection in brachytherapy. The potential and complementarity of EMT as treatment verification technology will be discussed in relation to in vivo dosimetry and imaging.
October 2016: Journal of Contemporary Brachytherapy
https://www.readbyqxmd.com/read/27895687/commissioning-and-quality-assurance-procedures-for-the-hdr-valencia-skin-applicators
#2
REVIEW
Domingo Granero, Cristian Candela-Juan, Facundo Ballester, Zoubir Ouhib, Javier Vijande, Jose Richart, Jose Perez-Calatayud
The Valencia applicators (Nucletron, an Elekta company, Elekta AB, Stockholm, Sweden) are cup-shaped tungsten applicators with a flattening filter used to collimate the radiation produced by a high-dose-rate (HDR) (192)Ir source, and provide a homogeneous absorbed dose at a given depth. This beam quality provides a good option for the treatment of skin lesions at shallow depth (3-4 mm). The user must perform commissioning and periodic testing of these applicators to guarantee the proper and safe delivery of the intended absorbed dose, as recommended in the standards in radiation oncology...
October 2016: Journal of Contemporary Brachytherapy
https://www.readbyqxmd.com/read/27895686/successful-treatment-of-a-67-year-old-woman-with-urethral-adenocarcinoma-with-the-use-of-external-beam-radiotherapy-and-image-guided-adaptive-interstitial-brachytherapy
#3
Jasmin Mujkanovic, Kari Tanderup, Mads Agerbæk, Ulla Bisgaard, Søren Høyer, Jacob Christian Lindegaard, Lars Fokdal
Primary urethral cancer (PUC) is a very rare disease. This case report illustrates a successful treatment approach of a 67-year-old woman with a urethral adenocarcinoma selected for an organ preserving treatment with external beam radiotherapy (EBRT) and interstitial brachytherapy (BT) boost, using the GEC-ESTRO target concept originally designed for locally advanced cervical cancer (LACC). Treatment included EBRT with 45 Gy in 25 fractions followed by image guided adaptive interstitial BT (IGABT) with a pulsed-dose-rate (PDR) BT boost with 30 Gy in 50 hourly pulses...
October 2016: Journal of Contemporary Brachytherapy
https://www.readbyqxmd.com/read/27895685/pediatric-peri-operative-fractionated-high-dose-rate-brachytherapy-for-recurrent-wilms-tumor-using-a%C3%A2-reconstructed-freiburg-flap
#4
Emily Flower, Kathy Ngoc Tran, Salman Zanjani, Wayne Smith, Jonathan Karpelowsky, Katie Summerhayes, Edgar Estoesta, Jennifer Chard
PURPOSE: To report peri-operative fractionated high-dose-rate (HDR) brachytherapy with a 3D customized Freiburg flap applicator to treat locally recurrent Wilms' tumor, followed by immediate hyperthermic intraperitoneal chemotherapy for a 16-year-old with a second recurrence of nephroblastoma (Wilms' tumor). MATERIAL AND METHODS: The tumor was excised and surgical bed was treated with fractionated HDR brachytherapy using a Freiburg flap applicator. Hyperthermic intraperitoneal chemotherapy was performed immediately after the removal of brachytherapy applicator...
October 2016: Journal of Contemporary Brachytherapy
https://www.readbyqxmd.com/read/27895684/investigation-of-the-gold-nanoparticles-effects-on-the-prostate-dose-distribution-in-brachytherapy-gel-dosimetry-and-monte-carlo-method
#5
Hossein Khosravi, Bijan Hashemi, Faezeh Rahmani, Ahmad Ebadi
PURPOSE: In this work, gold nanoparticles (GNPs) were embedded in the MAGIC-f polymer gel irradiated with the (192)Ir brachytherapy sources. MATERIAL AND METHODS: At the first plexiglas phantom was made as the human pelvis. The GNPs were synthesized with 15 nm in diameter and 0.1 mM (0.0197 mg/ml) in concentration by using a chemical reduction method. Then, the MAGIC-f gel was synthesized. The fabricated gel was poured into the tubes located at the prostate (with and without the GNPs) locations of the phantom...
October 2016: Journal of Contemporary Brachytherapy
https://www.readbyqxmd.com/read/27895683/salvage-interstitial-brachytherapy-based-on-computed-tomography-for-recurrent-cervical-cancer-after-radical-hysterectomy-and-adjuvant-radiation-therapy-case-presentations-and-introduction-of-the-technique
#6
Zhong-Shan Liu, Jie Guo, Yang-Zhi Zhao, Xia Lin, Bin Chen, Ming Zhang, Jiang-Ming Li, Xiao-Jun Ren, Bing-Ya Zhang, Tie-Jun Wang
PURPOSE: Locally recurring cervical cancer after surgery and adjuvant radiotherapy remains a major therapeutic challenge. This paper presents a new therapeutic technique for such patients: interstitial brachytherapy (BT) guided by real-time three-dimensional (3D) computed tomography (CT). MATERIAL AND METHODS: Sixteen patients with recurrent cervical cancer after radical surgery and adjuvant external-beam radiotherapy (EBRT) were included in this study. These patients underwent high-dose-rate (HDR) interstitial BT with free-hand placement of metal needles guided by real-time 3D-CT...
October 2016: Journal of Contemporary Brachytherapy
https://www.readbyqxmd.com/read/27895682/development-and-clinical-implementation-of-a-new-template-for-mri-based-intracavitary-interstitial-gynecologic-brachytherapy-for-locally-advanced-cervical-cancer-from-ct-based-mupit-to-the-mri-compatible-template-benidorm-ten-years-of-experience
#7
Silvia Rodríguez Villalba, Jose Richart Sancho, Antonio Otal Palacín, Jose Perez-Calatayud, Manuel Santos Ortega
PURPOSE: To study outcome and toxicity in 59 patients with locally advanced cervix carcinoma treated with computed tomography (CT)-based Martinez universal perineal interstitial template (MUPIT) and the new magnetic resonance imaging (MRI)-compatible template Benidorm (TB). MATERIAL AND METHODS: From December 2005 to October 2015, we retrospectively analyzed 34 patients treated with MUPIT and 25 treated with the TB. Six 4 Gy fractions were prescribed to the clinical target volume (CTV) combined with external beam radiotherapy (EBRT)...
October 2016: Journal of Contemporary Brachytherapy
https://www.readbyqxmd.com/read/27895681/rectal-separation-using-hydroxypropyl-methylcellulose-in-intracavitary-brachytherapy-of-cervical-cancer-an-innovative-approach
#8
Swapnendu Basu, Kazi Sazzad Manir, Abhishek Basu, Koushik Ghosh
PURPOSE: This study was initiated to prove feasibility of hydrogel application in recto-vaginal space in intracavitary brachytherapy (ICBT) of cervical cancer in order to reduce rectal toxicity. MATERIAL AND METHODS: In a case of stage IIB cervical cancer, after external beam radiotherapy (EBRT), we planned ICBT 7 Gy × 3 fractions. In 1(st) fraction (Plan 1), due to narrow separation between rectum and cervix (0.18 cm), only 5 Gy was delivered at point A (with high-risk clinical target volume [HR-CTV] D90 5...
October 2016: Journal of Contemporary Brachytherapy
https://www.readbyqxmd.com/read/27895680/the-role-of-interstitial-brachytherapy-in-the-management-of-primary-radiation-therapy-for-uterine-cervical-cancer
#9
Naoya Murakami, Kazuma Kobayashi, Tomoyasu Kato, Satoshi Nakamura, Akihisa Wakita, Hiroyuki Okamoto, Satoshi Shima, Keisuke Tsuchida, Tairo Kashihara, Ken Harada, Kana Takahashi, Rei Umezawa, Koji Inaba, Yoshinori Ito, Hiroshi Igaki, Jun Itami
PURPOSE: The aim of this study was to report the clinical results of uterine cervical cancer patients treated by primary radiation therapy including brachytherapy, and investigate the role of interstitial brachytherapy (ISBT). MATERIAL AND METHODS: All consecutive uterine cervical cancer patients who were treated by primary radiation therapy were reviewed, and those who were treated by ISBT were further investigated for clinical outcomes and related toxicities. RESULTS: From December 2008 to October 2014, 209 consecutive uterine cervical cancer patients were treated with primary radiation therapy...
October 2016: Journal of Contemporary Brachytherapy
https://www.readbyqxmd.com/read/27895679/the-impact-of-body-mass-index-on-dosimetric-quality-in-low-dose-rate-prostate-brachytherapy
#10
Michelle I Echevarria, Arash O Naghavi, Puja S Venkat, Yazan A Abuodeh, Carlos Chevere, Kosj Yamoah
PURPOSE: Low-dose-rate (LDR) brachytherapy has been established as an effective and safe treatment option for men with low and intermediate risk prostate cancer. In this retrospective analysis, we sought to study the effect of body mass index (BMI) on post-implant dosimetric quality. MATERIAL AND METHODS: After institutional approval, records of patients with non-metastatic prostate cancer treated in Puerto Rico with LDR brachytherapy during 2008-2013 were reviewed...
October 2016: Journal of Contemporary Brachytherapy
https://www.readbyqxmd.com/read/27895678/prostate-brachytherapy-in-ghana-our-initial-experience
#11
James Edward Mensah, Joel Yarney, Verna Vanderpuye, Evans Akpakli, Samuel Tagoe, Evans Sasu
PURPOSE: This study presents the experience of a brachytherapy team in Ghana with a focus on technology transfer and outcome. The team was initially proctored by experienced physicians from Europe and South Africa. MATERIAL AND METHODS: A total of 90 consecutive patients underwent either brachytherapy alone or brachytherapy in combination with external beam radiotherapy for prostate carcinoma between July 2008 and February 2014 at Korle Bu Teaching Hospital, Accra, Ghana...
October 2016: Journal of Contemporary Brachytherapy
https://www.readbyqxmd.com/read/27895677/predictors-of-prostate-volume-reduction-following-neoadjuvant-cytoreductive-androgen-suppression
#12
Krishan R Jethwa, Keith M Furutani, Lance A Mynderse, Torrence M Wilson, Richard Choo, Bernard F King, Eric Bergstralh, Brian J Davis
PURPOSE: Limited duration cytoreductive neoadjuvant hormonal therapy (NHT) is used prior to definitive radiotherapeutic management of prostate cancer to decrease prostate volume. The purpose of this study is to examine the effect of NHT on prostate volume before permanent prostate brachytherapy (PPB), and determine associated predictive factors. MATERIAL AND METHODS: Between June 1998 and April 2012, a total of 1,110 patients underwent PPB and 207 patients underwent NHT...
October 2016: Journal of Contemporary Brachytherapy
https://www.readbyqxmd.com/read/27648092/metal-artefacts-in-mri-guided-brachytherapy-of-cervical-cancer
#13
Abraam S Soliman, Amir Owrangi, Ananth Ravi, William Y Song
The importance of assessing the metal-induced artefacts in magnetic resonance imaging (MRI)-guided brachytherapy is growing along with the increasing interest of integrating MRI into the treatment procedure of cervical cancer. Examples of metal objects in use include intracavitary cervical applicators and interstitial needles. The induced artefacts increase the uncertainties in the clinical workflow and can be a potential obstacle for the accurate delivery of the treatment. Overcoming this problem necessitates a good understanding of its originating sources...
August 2016: Journal of Contemporary Brachytherapy
https://www.readbyqxmd.com/read/27648091/y-configured-metallic-stent-combined-with-125-i-seed-strands-cavity-brachytherapy-for-a-patient-with-type-iv-klatskin-tumor
#14
Jiao Dechao, Xinwei Han, Wang Yanli, Li Zhen
We report a case in an inoperable patient with type IV Klatskin tumor treated by the use of a novel, two piece, Y-configured self-expandable metallic stent (SEMS) combined with two (125)I seed strands via bilateral approach. The placement of the Y-shaped SEMS was successful and resulted in adequate biliary drainage. After 2 months of intraluminal brachytherapy (ILBT), both (125)I seed strands and temporary drainage catheter were removed after patency of the expanded stents was confirmed by the cholangiogram...
August 2016: Journal of Contemporary Brachytherapy
https://www.readbyqxmd.com/read/27648090/an-evaluation-of-the-robustness-of-organ-at-risk-recommendations-made-by-gec-estro-according-to-interobserver-variability-a-single-center-experience
#15
Rodolfo Chicas-Sett, Francisco Celada-Alvarez, Susana Roldán, Asunción Torregrosa, Jesus Betancourt, Juan Bautista-Ballesteros, Dolores Farga, Blanca Ibañez, Alejandro Tormo, Jose Perez-Calatayud
PURPOSE: Groupe Européen de Curiethérapie (GEC) and European Society for Radiotherapy & Oncology (ESTRO) has proposed a rectal dose constraint of the most exposed 2-cc volume (D2cc of ≤ 75 Gy EQD2α/β = 3) during external-beam plus high-dose-rate brachytherapy (HDR-BT) in localized prostate cancer patients. This study aimed to evaluate D2cc for rectal contouring via interobserver variability. MATERIAL AND METHODS: Four blinded observers contoured rectums of 5 patients...
August 2016: Journal of Contemporary Brachytherapy
https://www.readbyqxmd.com/read/27648089/novel-simple-templates-for-reproducible-positioning-of-skin-applicators-in-brachytherapy
#16
REVIEW
Silvia Rodríguez Villalba, Maria Jose Perez-Calatayud, Juan Antonio Bautista, Vicente Carmona, Francisco Celada, Alejandro Tormo, Teresa García-Martinez, José Richart, Manuel Santos Ortega, Magda Silla, Facundo Ballester, Jose Perez-Calatayud
PURPOSE: Esteya and Valencia surface applicators are designed to treat skin tumors using brachytherapy. In clinical practice, in order to avoid errors that may affect the treatment outcome, there are two issues that need to be carefully addressed. First, the selected applicator for the treatment should provide adequate margin for the target, and second, the applicator has to be precisely positioned before each treatment fraction. In this work, we describe the development and use of a new acrylic templates named Template La Fe-ITIC...
August 2016: Journal of Contemporary Brachytherapy
https://www.readbyqxmd.com/read/27648088/ent-cobra-consortium-for-brachytherapy-data-analysis-interdisciplinary-standardized-data-collection-system-for-head-and-neck-patients-treated-with-interventional-radiotherapy-brachytherapy
#17
REVIEW
Luca Tagliaferri, György Kovács, Rosa Autorino, Ashwini Budrukkar, Jose Luis Guinot, Guido Hildebrand, Bengt Johansson, Rafael Martìnez Monge, Jens E Meyer, Peter Niehoff, Angeles Rovirosa, Zoltàn Takàcsi-Nagy, Nicola Dinapoli, Vito Lanzotti, Andrea Damiani, Tamer Soror, Vincenzo Valentini
PURPOSE: Aim of the COBRA (Consortium for Brachytherapy Data Analysis) project is to create a multicenter group (consortium) and a web-based system for standardized data collection. MATERIAL AND METHODS: GEC-ESTRO (Groupe Européen de Curiethérapie - European Society for Radiotherapy & Oncology) Head and Neck (H&N) Working Group participated in the project and in the implementation of the consortium agreement, the ontology (data-set) and the necessary COBRA software services as well as the peer reviewing of the general anatomic site-specific COBRA protocol...
August 2016: Journal of Contemporary Brachytherapy
https://www.readbyqxmd.com/read/27648087/film-based-verification-of-calculation-algorithms-used-for-brachytherapy-planning-getting-ready-for-upcoming-challenges-of-mbdca
#18
Grzegorz Zwierzchowski, Grzegorz Bielęda, Janusz Skowronek, Magdalena Mazur
PURPOSE: Well-known defect of TG-43 based algorithms used in brachytherapy is a lack of information about interaction cross-sections, which are determined not only by electron density but also by atomic number. TG-186 recommendations with using of MBDCA (model-based dose calculation algorithm), accurate tissues segmentation, and the structure's elemental composition continue to create difficulties in brachytherapy dosimetry. For the clinical use of new algorithms, it is necessary to introduce reliable and repeatable methods of treatment planning systems (TPS) verification...
August 2016: Journal of Contemporary Brachytherapy
https://www.readbyqxmd.com/read/27648086/clinical-implementation-of-a-novel-applicator-in-high-dose-rate-brachytherapy-treatment-of-esophageal-cancer
#19
Ivan M Buzurovic, Jorgen L Hansen, Mandar S Bhagwat, Desmond A O'Farrell, Scott Friesen, Thomas C Harris, Antonio L Damato, Robert A Cormack, Neil E Martin, Phillip M Devlin
PURPOSE: In this study, we present the clinical implementation of a novel transoral balloon centering esophageal applicator (BCEA) and the initial clinical experience in high-dose-rate (HDR) brachytherapy treatment of esophageal cancer, using this applicator. MATERIAL AND METHODS: Acceptance testing and commissioning of the BCEA were performed prior to clinical use. Full performance testing was conducted including measurements of the dimensions and the catheter diameter, evaluation of the inflatable balloon consistency, visibility of the radio-opaque markers, congruence of the markers, absolute and relative accuracy of the HDR source in the applicator using the radiochromic film and source position simulator, visibility and digitization of the applicator on the computed tomography (CT) images under the clinical conditions, and reproducibility of the offset...
August 2016: Journal of Contemporary Brachytherapy
https://www.readbyqxmd.com/read/27648085/modelling-the-radiobiological-effect-of-intraoperative-x-ray-brachytherapy-for-breast-cancer-using-an-air-filled-spherical-applicator
#20
Kris Armoogum, Simon Evans, David Morgan
PURPOSE: We present a framework, in which we compare a conventional standard dose of 50 Gy in 25 fractions with accelerated partial breast irradiation (APBI) using electronic brachytherapy (eBT). We discuss how radiobiological modelling enables us to establish a framework, within which we can compare external beam radiotherapy (EBRT). This leads to a determination of the shell of isoeffect in breast tissue, at which very low kV eBT can be considered to be clinically equivalent to standard EBRT...
August 2016: Journal of Contemporary Brachytherapy
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