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Journal of Contemporary Brachytherapy

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
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
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
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
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
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
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
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
Peter W Henderson, David I Kutler, Bhupesh Parashar, David M Otterburn, Marc A Cohen, Jason A Spector
PURPOSE: While brachytherapy is often used concurrently with flap reconstruction following surgical ablation for head and neck cancer, it remains unclear whether it increases morbidity in the particularly high risk subset of patients undergoing salvage treatment for recurrent head and neck cancer (RH&NC). MATERIAL AND METHODS: A retrospective chart review was undertaken that evaluated patients with RH&NC who underwent flap coverage after surgical re-resection and concomitant brachytherapy...
August 2016: Journal of Contemporary Brachytherapy
Heloisa de Andrade Carvalho, Lucas Castro Mendez, Silvia Radwanski Stuart, Roger Guilherme Rodrigues Guimarães, Clarissa Cerchi Angotti Ramos, Lucas Assad de Paula, Camila Pessoa de Sales, André Tsin Chih Chen, Roberto Blasbalg, Ronaldo Hueb Baroni
PURPOSE: To evaluate tumor shrinking kinetics in order to implement image-guided brachytherapy (IGBT) for the treatment of patients with cervix cancer. MATERIAL AND METHODS: This study has prospectively evaluated tumor shrinking kinetics of thirteen patients with uterine cervix cancer treated with combined chemoradiation. Four high dose rate brachytherapy fractions were delivered during the course of pelvic external beam radiation therapy (EBRT). Magnetic resonance imaging (MRI) exams were acquired at diagnosis (D), first (B1), and third (B3) brachytherapy fractions...
August 2016: Journal of Contemporary Brachytherapy
Martje Marie Terheyden, Corinna Melchert, György Kovács
PURPOSE: This study aims to compare the dosimetric data of local tumor's bed dose escalation (boost) with photon beams (external beam radiation therapy - EBRT) versus high-dose-rate interstitial brachytherapy (HDR-BT) after breast-conserving treatment in women with early-stage breast cancer. MATERIAL AND METHODS: We analyzed the treatment planning data of 136 irradiated patients, treated between 2006 and 2013, who underwent breast-conserving surgery and adjuvant whole breast irradiation (WBI; 50...
August 2016: Journal of Contemporary Brachytherapy
Joseph Safdieh, Andrew Wong, Joseph P Weiner, David Schwartz, David Schreiber
PURPOSE: Several prior studies have suggested that brachytherapy utilization has markedly decreased, coinciding with the recent increased utilization of intensity modulated radiation therapy, as well as an increase in urologist-owned centers. We sought to investigate the brachytherapy utilization in a large, hospital-based registry. MATERIAL AND METHODS: Men with prostate cancer diagnosed between 2004-2012 and treated with either external beam radiation and/or prostate brachytherapy were abstracted from the National Cancer Database...
August 2016: Journal of Contemporary Brachytherapy
Tina Bretschneider, Jens Ricke, Bernhard Gebauer, Florian Streitparth
In the last few years, minimally invasive tumor ablation performed by interventional radiologists has gained increasing relevance in oncologic patient care. Limitations of thermal ablation techniques such as radiofrequency ablation (RFA), microwave ablation (MWA), and laser-induced thermotherapy (LITT), including large tumor size, cooling effects of adjacent vessels, and tumor location near thermosensitive structures, have led to the development of image-guided high-dose-rate (HDR) brachytherapy, especially for the treatment of liver malignancies...
June 2016: Journal of Contemporary Brachytherapy
Constantinos Zamboglou, Hans-Christian Rischke, Philipp Tobias Meyer, Sven Knobe, Natalja Volgeova-Neher, Michael Kollefrath, Cordula Annette Jilg, Anca Ligia Grosu, Dimos Baltas, Malte Kroenig
PURPOSE: We present a novel method for treatment of locally recurrent prostate cancer (PCa) following radiation therapy: focal, multimodal image guided high-dose-rate (HDR) brachytherapy. MATERIAL AND METHODS: We treated two patients with recurrent PCa after primary (#1) or adjuvant (#2) external beam radiation therapy. Multiparametric magnetic resonance imaging (mpMRI), choline, positron emission tomography combined with computed tomography (PET/CT), or prostate-specific membrane antigen (PSMA)-PET combined with CT identified a single intraprostatic lesion...
June 2016: Journal of Contemporary Brachytherapy
Tze Yee Lim, Rajat J Kudchadker, Jihong Wang, Tharakeswara Bathala, Janio Szklaruk, Thomas J Pugh, Usama Mahmood, Geoffrey S Ibbott, Steven J Frank
PURPOSE: Computed tomography (CT)-based prostate post-implant dosimetry allows for definitive seed localization but is associated with high interobserver variation in prostate contouring. Currently, magnetic resonance imaging (MRI)-based post-implant dosimetry allows for accurate anatomical delineation but is limited due to inconsistent seed localization. Encapsulated contrast agent markers were previously proposed to overcome the seed localization limitation on MRI images by placing hyperintense markers adjacent to hypointense seeds...
June 2016: Journal of Contemporary Brachytherapy
Gang Yin, Pei Wang, Jinyi Lang, Yin Tian, Yangkun Luo, Zixuan Fan, Kin Yip Tam
PURPOSE: Intensity modulated radiation therapy (IMRT) compensation based on 3D high-dose-rate (HDR) intracavitary brachytherapy (ICBT) boost technique (ICBT + IMRT) has been used in our hospital for advanced cervix carcinoma patients. The purpose of this study was to compare the dosimetric results of the four different boost techniques (the conventional 2D HDR intracavitary brachytherapy [CICBT], 3D optimized HDR intracavitary brachytherapy [OICBT], and IMRT-alone with the applicator in situ)...
June 2016: Journal of Contemporary Brachytherapy
Primoz Petric, Christian Kirisits
PURPOSE: Magnetic resonance imaging (MRI) is the gold standard for image guided adaptive brachytherapy (BT) of cervical cancer. Ultrasound is an attractive alternative with reasonable costs and high soft tissue depiction quality. This technical note aims to demonstrate the proof of principle for use of TRAns Cervical Endosonography with rotating transducer in the context of brachytherapy (TRACE BT). MATERIAL AND METHODS: TRACE BT presentation is based on a single stage IIB cervical cancer patient...
June 2016: Journal of Contemporary Brachytherapy
Rajni Sethi, Adam Cunha, Katherine Mellis, Timmy Siauw, Chris Diederich, Jean Pouliot, I-Chow Hsu
PURPOSE: Three-dimensional (3D) printing technology allows physicians to rapidly create customized devices for patients. We report our initial clinical experience using this technology to create custom applicators for vaginal brachytherapy. MATERIAL AND METHODS: Three brachytherapy patients with unique clinical needs were identified as likely to benefit from a customized vaginal applicator. Patient 1 underwent intracavitary vaginal cuff brachytherapy after hysterectomy and chemotherapy for stage IA papillary serous endometrial cancer using a custom printed 2...
June 2016: Journal of Contemporary Brachytherapy
Joel Poder, May Whitaker
PURPOSE: Inverse planning simulated annealing (IPSA) optimized brachytherapy treatment plans are characterized with large isolated dwell times at the first or last dwell position of each catheter. The potential of catheter shifts relative to the target and organs at risk in these plans may lead to a more significant change in delivered dose to the volumes of interest relative to plans with more uniform dwell times. MATERIAL AND METHODS: This study aims to determine if the Nucletron Oncentra dwell time deviation constraint (DTDC) parameter can be optimized to improve the robustness of high-dose-rate (HDR) prostate brachytherapy plans to catheter displacements...
June 2016: Journal of Contemporary Brachytherapy
Łukasz Kuncman, Sławomir Kozłowski, Andrzej Pietraszek, Malwina Pietrzykowska-Kuncman, Justyna Danielska, Janusz Sobotkowski, Jolanta Łuniewska-Bury, Jacek Fijuth
PURPOSE: Brachytherapy (BT), due to rapid dose fall off and minor set-up errors, should be superior to external beam radiotherapy (EBRT) for treatment of lesions in difficult locations like nose and earlobe. Evidences in this field are scarce. We describe computed tomography (CT) based surface mould BT for non-melanoma skin cancers (NMSC), and compare its conformity, dose coverage, and tissue sparing ability to EBRT. MATERIAL AND METHODS: We describe procedure of preparation of surface mould applicator and dosimetry parameters of BT plans, which were implemented in 10 individuals with NMSC of nose and earlobe...
June 2016: Journal of Contemporary Brachytherapy
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