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Cervical cancer brachytherapy

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https://www.readbyqxmd.com/read/28334837/clinical-outcome-of-definitive-radiation-therapy-for-superficial-esophageal-cancer
#1
Yutaro Koide, Takeshi Kodaira, Hiroyuki Tachibana, Natsuo Tomita, Chiyoko Makita, Makoto Itoh, Tetsuya Abe, Kei Muro, Masahiro Tajika, Yasumasa Niwa, Yoshiyuki Itoh, Shinji Naganawa
Objective: To analyze the clinical outcome of concurrent chemoradiotherapy in superficial esophageal cancer patients. Methods: We retrospectively analyzed data for 123 patients with superficial esophageal cancer who received external beam radiotherapy without intracavitary brachytherapy plus systemic chemotherapy during 1998-2015. Elective nodal irradiation was not performed. The dosage to planning treatment volume was 60 Gy in 30 fractions. The main outcome measure was overall survival...
February 23, 2017: Japanese Journal of Clinical Oncology
https://www.readbyqxmd.com/read/28332987/brachytherapy-improves-survival-in-stage-iii-endometrial-cancer-with-cervical-involvement
#2
Brian Bingham, Andrew Orton, Dustin Boothe, Greg Stoddard, Y Jessica Huang, David K Gaffney, Matthew M Poppe
PURPOSE: To evaluate the survival benefit of adding vaginal brachytherapy (BT) to pelvic external beam radiation therapy (EBRT) in women with stage III endometrial cancer. METHODS AND MATERIALS: The National Cancer Data Base was used to identify patients with stage III endometrial cancer from 2004 to 2013. Only women who received adjuvant EBRT were analyzed. Women were grouped according to receipt of BT. Logistic regression modeling was used to identify predictors of receiving BT...
April 1, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/28332986/risk-factors-for-pelvic-insufficiency-fractures-in-locally-advanced-cervical-cancer-following-intensity-modulated-radiation-therapy
#3
Anne Ramlov, Erik Morre Pedersen, Lisbeth Røhl, Esben Worm, Lars Fokdal, Jacob Chr Lindegaard, Kari Tanderup
PURPOSE: To investigate the incidence of and risk factors for pelvic insufficiency fracture (PIF) after definitive chemoradiation therapy for locally advanced cervical cancer (LACC). METHODS AND MATERIALS: We analyzed 101 patients with LACC treated from 2008-2014. Patients received weekly cisplatin and underwent external beam radiation therapy with 45 Gy in 25 fractions (node-negative patients) or 50 Gy in 25 fractions with a simultaneous integrated boost of 60 Gy in 30 fractions (node-positive patients)...
April 1, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/28325239/the-unique-issues-with-brachytherapy-in-low-and-middle-income-countries
#4
REVIEW
Surbhi Grover, John Longo, John Einck, Priya Puri, Derek Brown, Junzo Chino, Umesh Mahantshetty, Catheryn Yashar, Beth Erickson
Gynecologic carcinomas, including cervical cancer, present a significant burden on low- and middle-income countries (LMICs). Brachytherapy plays an integral role in the treatment of gynecologic carcinomas, as it is essential for both curative and palliative treatment. However, there are numerous geographic and economic barriers to providing brachytherapy to cancer patients in LMICs. This article examines the role and delivery of brachytherapy in gynecological cancer treatment; brachytherapy capacity in LMICs, including infrastructure, equipment, and human resources considerations; commissioning, training, and clinical implementation of brachytherapy in LMICs; other challenges, and strategies for improvement in brachytherapy delivery in LMICs, including innovation and current and upcoming international initiatives...
April 2017: Seminars in Radiation Oncology
https://www.readbyqxmd.com/read/28318644/comparison-of-outcomes-for-mr-guided-versus-ct-guided-high-dose-rate-interstitial-brachytherapy-in-women-with-locally-advanced-carcinoma-of-the-cervix
#5
Sophia C Kamran, Matthias M Manuel, Linda P Cho, Antonio L Damato, Ehud J Schmidt, Clare Tempany, Robert A Cormack, Akila N Viswanathan
OBJECTIVE: The purpose was to compare local control (LC), overall survival (OS) and dose to the organs at risk (OAR) in women with locally advanced cervical cancer treated with MR-guided versus CT-guided interstitial brachytherapy (BT). METHODS: 56 patients (29 MR, 27 CT) were treated with high-dose-rate (HDR) interstitial BT between 2005-2015. The MR patients had been prospectively enrolled on a Phase II clinical trial. Data were analyzed using Kaplan-Meier (K-M) and Cox proportional hazards statistical modeling in JMP® & R®...
March 17, 2017: Gynecologic Oncology
https://www.readbyqxmd.com/read/28315010/comparison-of-efficacy-of-meperidine-and-fentanyl-in-terms-of-pain-management-and-quality-of-life-in-patients-with-cervical-cancer-receiving-intracavitary-brachytherapy-a-double-blind-randomized-controlled-trial
#6
Saengrawee Thanthong, Sirikorn Rojthamarat, Wipra Worasawate, Phongthara Vichitvejpaisal, Danupon Nantajit, Nantakarn Ieumwananontachai
OBJECTIVE: The aim of this study was to compare the effectiveness of two sedative regimens, a benzodiazepine with either meperidine or fentanyl, in relieving pain in patients with cervical cancer undergoing intracavitary brachytherapy in terms of pain score and quality of life. METHODS: Forty unselected outpatients undergoing brachytherapy (160 fractions) were enrolled with informed consent and randomized to receive a benzodiazepine with either meperidine or fentanyl...
March 18, 2017: Supportive Care in Cancer: Official Journal of the Multinational Association of Supportive Care in Cancer
https://www.readbyqxmd.com/read/28306556/metal-artifact-reduction-in-mri-based-cervical-cancer-intracavitary-brachytherapy
#7
Yuan James Rao, Jacqueline E Zoberi, Mo Kadbi, Perry W Grigsby, Jochen Cammin, Stacie L Mackey, Jose Garcia-Ramirez, S Murty Goddu, Julie K Schwarz, H Michael Gach
Magnetic resonance imaging (MRI) plays an increasingly important role in brachytherapy planning for cervical cancer. Yet, metal tandem, ovoid intracavitary applicators, and fiducial markers used in brachytherapy cause magnetic susceptibility artifacts in standard MRI. These artifacts may impact the accuracy of brachytherapy treatment and the evaluation of tumor response by misrepresenting the size and location of the metal implant, and distorting the surrounding anatomy and tissue. Metal artifact reduction sequences (MARS) with high bandwidth RF selective excitations and turbo spin-echo readouts were developed for MRI of orthopedic implants...
March 17, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28297433/secondary-cancer-incidence-risk-estimates-for-external-radiotherapy-and-high-dose-rate-brachytherapy-in-cervical-cancer-phantom-study
#8
Boram Lee, Sung Hwan Ahn, Hyeyoung Kim, Jaeman Son, Jiwon Sung, Youngyih Han, Seung Jae Huh, Jin Sung Kim, Dong Wook Kim, Myonggeun Yoon
This study was designed to estimate radiation-induced secondary cancer risks from high-dose-rate (HDR) brachytherapy and external radiotherapy for patients with cervical cancer based on measurements of doses absorbed by various organs. Organ doses from HDR brachytherapy and external radiotherapy were measured using glass rod dosimeters. Doses to out-of-field organs were measured at various locations inside an anthropomorphic phantom. Brachytherapy-associated organ doses were measured using a specialized phantom that enabled applicator insertion, with the pelvis portion of the existing anthropomorphic phantom replaced by this new phantom...
September 2016: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28297313/a-comparison-of-organs-at-risk-doses-in-gyn-intracavitary-brachytherapy-for-different-tandem-lengths-and-bladder-volumes
#9
Zahra Siavashpour, Mahmoud Reza Aghamiri, Ramin Jaberi, Naser ZareAkha, Hamid Reza Dehghan Manshadi, Christian Kirisits, Mahbod Sedaghat
The purpose of this study was to investigate the concurrent effects of tandem length and bladder volume on dose to pelvic organs at risk (OARs) in HDR intracavitary brachytherapy treatment of cervical cancer. Twenty patients with locally advanced cervical cancer were selected for brachytherapy using Rotterdam applicators. The patients were CT scanned twice with empty and full bladder. Two treatment plans were prepared on each of the image sets. Patients were categorized into two groups; those treated with a tandem length of 4 cm or smaller (T≤4 cm) and those with tandem length larger than 4 cm (T>4 cm)...
May 2016: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28297312/anatomy-based-definition-of-point-a-utilizing-three-dimensional-volumetric-imaging-approach-for-high-dose-rate-hdr-intracavitary-brachytherapy-dose-prescription-when-treating-cervical-cancer-using-limited-resources
#10
Manish K Goyal, D V Rai, Than S Kehwar, Jayanand Manjhi, Bret H Heintz, Kathleen L Shide, Jerry L Barker
This study was designed to determine whether volumetric imaging could identify consistent alternative prescription methods to Manchester/point A when prescribing radiation dose in the treatment of cervical cancer using HDR intracavitary brachytherapy (ICBT). One hundred and twenty-five treatment plans of 25 patients treated for carcinoma of the cervix were reviewed retrospectively. Each patient received 5 fractions of HDR ICBT following initial cisplatin-based pelvic chemoradiation, and radiation dose was originally prescribed to point A (ICRU-38)...
November 2016: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28297292/a-comprehensive-evaluation-of-adaptive-daily-planning-for-cervical-cancer-hdr-brachytherapy
#11
Rebecca Meerschaert, Adrian Nalichowski, Jay Burmeister, Arun Paul, Steven Miller, Zhenghui Hu, Ling Zhuang
The purpose of this study was to evaluate adaptive daily planning for cervical cancer patients who underwent high-dose-rate intracavitary brachytherapy (HDR-BT) using comprehensive interfractional organ motion measurements. This study included 22 cervical cancer patients who underwent 5 fractions of HDR-BT. Regions of interest (ROIs) including high-risk clinical tumor volume (HR-CTV) and organs at risk (OARs) were manually contoured on daily CT images. All patients were clinically treated with adaptive daily plans (ADP), which involved ROI delineation and dose optimization at each treatment fraction...
November 2016: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28297280/an-innovative-method-to-acquire-the-location-of-point-a-for-cervical-cancer-treatment-by-hdr-brachytherapy
#12
Liyun Chang, Sheng-Yow Ho, Shyh-An Yeh, Tsair-Fwu Lee, Pang-Yu Chen
Brachytherapy of local cervical cancer is generally accomplished through film-based treatment planning with the prescription directed to point A, which is invisible on images and is located at a high-dose gradient area. Through a standard reconstruction method by digitizing film points, the location error for point A would be 3 mm with a condition of 30° curvature tandem, which is 10° away from the gantry rotation axis of a simulator, and has an 8.7 cm interval between the flange and the isocenter. To reduce the location error of the reconstructed point A, this paper proposes a method and demonstrates its accuracy...
November 2016: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28295403/toward-a-3d-transrectal-ultrasound-system-for-verification-of-needle-placement-during-high-dose-rate-interstitial-gynecologic-brachytherapy
#13
Jessica Robin Rodgers, Kathleen Surry, Eric Leung, David D'Souza, Aaron Fenster
PURPOSE: Treatment for gynecologic cancers, such as cervical, recurrent endometrial, and vaginal malignancies, commonly includes external-beam radiation and brachytherapy. In high-dose-rate (HDR) interstitial gynecologic brachytherapy, radiation treatment is delivered via hollow needles that are typically inserted through a template on the perineum with a cylinder placed in the vagina for stability. Despite the need for precise needle placement to minimize complications and provide optimal treatment, there is no standard intra-operative image-guidance for this procedure...
March 15, 2017: Medical Physics
https://www.readbyqxmd.com/read/28272204/safety-and-efficacy-of-semiextended-field-intensity-modulated-radiation-therapy-and-concurrent-cisplatin-in-locally-advanced-cervical-cancer-patients-an-observational-study-of-10-year-experience
#14
Jie Lee, Jhen-Bin Lin, Fang-Ju Sun, Yu-Jen Chen, Chih-Long Chang, Ya-Ting Jan, Meng-Hao Wu
Patients with locally advanced cervical cancer (LACC) are at risk of para-aortic lymph node (PALN) metastasis. Pelvic concurrent chemoradiotherapy, the current standard treatment for LACC, has a PALN failure rate of 9% according to the Radiation Therapy Oncology Group Trial 90-01, suggesting that it may not completely eliminate all microscopic tumors in the PALNs. To minimize the toxicities associated with conventional prophylactic extended-field radiotherapy, our institute use prophylactic semiextended field radiotherapy that includes only the PALNs below the level of the renal vessels...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28267131/computed-tomography-guided-interstitial-brachytherapy-for-locally-advanced-cervical-cancer-introduction-of-the-technique-and-a-comparison-of-dosimetry-with-conventional-intracavitary-brachytherapy
#15
Zhong-Shan Liu, Jie Guo, Yang-Zhi Zhao, Xia Lin, Bing-Ya Zhang, Chu Zhang, Hong-Yong Wang, Lei Yu, Xiao-Jun Ren, Tie-Jun Wang
OBJECTIVE: We present a new technique of 3-dimensional computed tomography-guided interstitial (IS) brachytherapy (BT) for locally advanced cervical cancer, offering a more advantageous clinical treatment approach. MATERIALS/METHODS: Interstitial BT was performed using an applicator combining uterine tandem and metal needles; needles were inserted freehand under real-time 3-dimensional computed tomography guidance. Twenty-eight patients with bulky tumors and/or parametrial extension (tumor size > 5 cm) after external beam radiotherapy received IS BT...
March 6, 2017: International Journal of Gynecological Cancer
https://www.readbyqxmd.com/read/28256433/the-value-of-systematic-contouring-of-the-bowel-for-treatment-plan-optimization-in-image-guided-cervical-cancer-high-dose-rate-brachytherapy
#16
Antonio L Damato, Ivan Buzurovic, Mandar S Bhagwat, Robert A Cormack, Phillip M Devlin, Scott Friesen, Jorgen Hansen, Larissa J Lee, Matthias M Manuel, Linda P Cho, Desmond O'Farrell, Akila N Viswanathan
PURPOSE: To investigate the dose-volume histogram metrics and optimization results of the contoured bowel in cervical cancer brachytherapy. METHODS AND MATERIALS: Treatment plans of cervical cancer patients treated with image-guided high dose rate were retrospectively analyzed with institutional review board approval. In addition to the clinical target volume, rectum, bladder, and sigmoid, the bowel was contoured at the time of planning (Group 1) or at the time of this analysis (Group 2)...
February 27, 2017: Brachytherapy
https://www.readbyqxmd.com/read/28255386/variation-in-uterus-position-prior-to-brachytherapy-of-the-cervix-a-case-report
#17
M T Georgescu, R Anghel
Rationale: brachytherapy is administered in the treatment of patients with locally advanced cervical cancer following chemoradiotherapy. Lack of local anatomy evaluation prior to this procedure might lead to the selection of an inappropriate brachytherapy applicator, increasing the risk of side effects (e.g. uterus perforation, painful procedure ...). Objective: To assess the movement of the uterus and cervix prior to brachytherapy in patients with gynecological cancer, in order to select the proper type of brachytherapy applicator...
January 2017: Journal of Medicine and Life
https://www.readbyqxmd.com/read/28245859/californium-252-neutron-brachytherapy-combined-with-external-pelvic-radiotherapy-plus-concurrent-chemotherapy-for-cervical-cancer-a-retrospective-clinical-study
#18
Shen Qian, Ling Ye, Yun-Hong Tian, Li-Gen Wang, Zuo-Ping Huang, Feng Li, Bing Hou, Ni Song, Juan Chen, Ying Liu, Xiao Liu, Tao Zhou
BACKGROUND: Cervical cancer is the sixth most common cancer in Chinese women. A standard treatment modality for cervical cancer is the combination of surgery, chemotherapy, external-beam radiotherapy and intracavitary brachytherapy. The aim of this study was to retrospectively assess the long-term treatment outcomes of patients with cervical cancer who were treated with californium-252 neutron brachytherapy combined with external-beam radiotherapy plus concurrent chemotherapy. METHODS: We retrospectively analyzed the medical records of 150 patients with primary stages IB-IVB cervical cancer who received neutron brachytherapy combined with external-beam radiotherapy concurrently with cisplatin chemotherapy...
February 28, 2017: Chinese Journal of Cancer
https://www.readbyqxmd.com/read/28237399/comment-on-effect-of-tumor-dose-volume-and-overall-treatment-time-on-local-control-after-radiochemotherapy-including-mri-guided-brachytherapy-of-locally-advanced-cervical-cancer-kari-tanderup-et-al
#19
Hideya Yamazaki, Satoaki Nakamura, Gen Suzuki, Ken Yoshida, Tadayuki Kotsuma
No abstract text is available yet for this article.
February 22, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/28214368/evaluation-of-deformable-image-registration-between-external-beam-radiotherapy-and-hdr-brachytherapy-for-cervical-cancer-with-a-3d-printed-deformable-pelvis-phantom
#20
Noriyuki Kadoya, Yuya Miyasaka, Yujiro Nakajima, Yoshihiro Kuroda, Kengo Ito, Mizuki Chiba, Kiyokazu Sato, Suguru Dobashi, Takaya Yamamoto, Noriyoshi Takahashi, Masaki Kubozono, Ken Takeda, Keiichi Jingu
PURPOSE: In this study, we developed a 3D-printed deformable pelvis phantom for evaluating spatial DIR accuracy. We then evaluated the spatial DIR accuracies of various DIR settings for cervical cancer. METHODS: A deformable female pelvis phantom was created based on patient CT data using 3D printing. To create the deformable uterus phantom, we first 3D printed both a model of uterus and a model of the internal cavities of the vagina and uterus. We then made a mold using the 3D printed uterus phantom...
February 18, 2017: Medical Physics
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