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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
#1
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/28805047/outcomes-of-post-prostatectomy-radiotherapy-at-a-regional-cancer-centre
#2
Luke Nicholls, Amber Winter, Ashley Harwood, Ashley Plank, Preeti Bagga, Winnie Wong, Eric Khoo
INTRODUCTION: To investigate the efficacy and toxicity of radiation therapy (RT) after radical prostatectomy (RP) for prostate cancer at Radiation Oncology Centres, Toowoomba. METHODS: The electronic medical records of 130 consecutive patients with histologically proven prostate adenocarcinoma who underwent post-prostatectomy RT between January 2008 and December 2014 were analysed. Primary endpoint was Biochemical Recurrence (BCR) after RT. BCR was defined by PSA > 0...
August 14, 2017: Journal of Medical Radiation Sciences
https://www.readbyqxmd.com/read/28797999/long-term-results-of-post-operative-pelvic-image-guided-intensity-modulated-radiotherapy-in-gynecological-malignancies
#3
Rashi Agrawal, Sowmiya Prithiviraj, Dinesh Singh, Vaishali Zamre, Sandeep Agrawal, Arun Kumar Goel, Kanika Gupta, Bala Subramanian
OBJECTIVE: To assess late clinical outcomes with image guided intensity modulated radiotherapy (IG- IMRT) in gynecological malignancies. PATIENTS AND METHODS: We have been practicing IG IMRT for gynecological malignancies since January 2009. Here we are presenting our experience with this modern technique at median follow up of 38 months. During whole treatment bladder filling protocol was followed. Both target volumes and critical structures were contoured according to RTOG guidelines...
May 2017: Gulf Journal of Oncology
https://www.readbyqxmd.com/read/28797459/impact-of-dose-volume-parameters-and-clinical-factors-on-acute-radiation-oral-mucositis-for-locally-advanced-nasopharyngeal-carcinoma-patients-treated-with-concurrent-intensity-modulated-radiation-therapy-and-chemoradiotherapy
#4
Kaixin Li, Ling Yang, Peiling Xin, Yuanyuan Chen, Qiang-Ying Hu, Xiao-Zhong Chen, Ming Chen
PURPOSE: To prospectively identify the predictive value of different dosimetric parameters and also assess the predictors of acute radiation oral mucositis (ROM). METHODS: In accordance with the RTOG scoring criteria, ninety-two patients with locally advanced nasopharyngeal carcinoma (NPC) treated with concurrent chemoradiotherapy were evaluated for acute ROM which was defined as severe when the score ≥3. Patients' medical records and dosimetric data exported from IMRT plan enable the authors to perform a statistical analysis for the parameters as potential predictors of severe ROM...
September 2017: Oral Oncology
https://www.readbyqxmd.com/read/28797456/rebamipide-gargle-in-preventive-management-of-chemo-radiotherapy-induced-oral-mucositis
#5
B Chaitanya, Keerthilatha M Pai, Prahlad H Yathiraj, Donald Fernandes, Yogesh Chhaparwal
BACKGROUND & OBJECTIVES: Oral mucositis is inflammation of mucosa of oral cavity which is an inevitable and acute side effect in patients undergoing chemoradiotherapy for head & neck cancer. Though many agents have been tried in prevention & treatment of oral mucositis, until date no single agent exists that is universally established to be effective. METHODS: 60 Patients diagnosed with Head & Neck cancer recruited for concurrent chemo-radiotherapy were assigned in a double blind fashion into 2 groups using computer based 1:1 ratio randomization...
September 2017: Oral Oncology
https://www.readbyqxmd.com/read/28777690/development-and-validation-of-nomograms-predictive-of-overall-and-progression-free-survival-in-patients-with-oropharyngeal-cancer
#6
Carole Fakhry, Qiang Zhang, Phuc Felix Nguyen-Tân, David I Rosenthal, Randal S Weber, Louise Lambert, Andy M Trotti, William L Barrett, Wade L Thorstad, Christopher U Jones, Sue S Yom, Stuart J Wong, John A Ridge, Shyam S D Rao, James A Bonner, Eric Vigneault, David Raben, Mahesh R Kudrimoti, Jonathan Harris, Quynh-Thu Le, Maura L Gillison
Purpose Treatment of oropharyngeal squamous cell carcinoma (OPSCC) is evolving toward risk-based modification of therapeutic intensity, which requires patient-specific estimates of overall survival (OS) and progression-free survival (PFS). Methods To develop and validate nomograms for OS and PFS, we used a derivation cohort of 493 patients with OPSCC with known p16 tumor status (surrogate of human papillomavirus) and cigarette smoking history (pack-years) randomly assigned to clinical trials using platinum-based chemoradiotherapy (NRG Oncology Radiation Therapy Oncology Group [RTOG] 0129 and 0522)...
August 4, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28760560/hippocampal-dose-from-stereotactic-radiosurgery-for-4-to-10-brain-metastases-risk-factors-feasibility-of-dose-reduction-via-re-optimization-and-patient-outcomes
#7
Samuel R Birer, Adam C Olson, Justus Adamson, Rodney Hood, Matthew Susen, Grace Kim, Joseph K Salama, John P Kirkpatrick
This study aimed to report hippocampal dose from single-fraction stereotactic radiosurgery (SRS) for 4 to 10 brain metastases and determine feasibility of hippocampal-sparing SRS. Patients with 4 to 10 brain metastases receiving single-isocenter, multi-target single-fraction SRS were identified. Hippocampi were contoured using the Radiation Therapy Oncology Group (RTOG) 0933 atlas. RTOG 0933 dose constraints were converted to a biologically effective dose using an alpha/beta of 2 (D100 421 cGy, Dmax 665 cGy)...
July 28, 2017: Medical Dosimetry: Official Journal of the American Association of Medical Dosimetrists
https://www.readbyqxmd.com/read/28758177/the-5-year-outcomes-of-moderately-hypofractionated-radiotherapy-66%C3%A2-gy-in-22-fractions-3-fractions-per-week-for-localized-prostate-cancer-a-retrospective-study
#8
Yaichiro Hashimoto, Atsushi Motegi, Tetsuo Akimoto, Norio Mitsuhashi, Junpei Iizuka, Kazunari Tanabe, Yuka Ishii, Sawa Kono, Sachiko Izumi, Kumiko Karasawa
BACKGROUND: Hypofractionated radiotherapy using fewer and larger fractional doses may be more beneficial than conventional external-beam radiotherapy for localized prostate cancer. We evaluated the 5-year outcomes of moderately hypofractionated radiotherapy for localized prostate cancer. METHODS: We retrospectively evaluated 195 patients with localized prostate cancer (T1-3N0M0) who underwent intensity-modulated radiotherapy (IMRT) (66 Gy delivered in fractions of 3 Gy every other weekday) between May 2005 and December 2011...
July 31, 2017: International Journal of Clinical Oncology
https://www.readbyqxmd.com/read/28740931/the-relationship-between-cardiac-radiation-dose-and-mediastinal-lymph-node-involvement-in-stage-iii-non-small-cell-lung-cancer-patients
#9
Laura K McNew, Stephen R Bowen, Olga Gopan, Matthew J Nyflot, Shilpen A Patel, Jing Zeng, Ramesh Rengan
PURPOSE: The results from Radiation Therapy Oncology Group (RTOG) 0617, a dose escalation trial that compared treatment with 60 Gy versus 74 Gy for patients with stage III non-small cell lung cancer (NSCLC), suggested that in these patients, the heart dose from radiation therapy correlates with survival. In particular, the study noted that patients with a high heart V5 and V30 had a poorer overall survival; however, the exact cause of this correlation is not known. We hypothesize that heart dose may be a surrogate for mediastinal nodal involvement, which has prognostic value in NSCLC...
April 2017: Advances in Radiation Oncology
https://www.readbyqxmd.com/read/28740921/long-term-outcomes-and-toxicities-of-a-large-cohort-of-anal-cancer-patients-treated-with-dose-painted-imrt-per-rtog-0529
#10
Devarati Mitra, Theodore S Hong, Nora Horick, Brent Rose, Lorraine N Drapek, Lawrence S Blaszkowsky, Jill N Allen, Eunice L Kwak, Janet E Murphy, Jeffrey W Clark, David P Ryan, James C Cusack, Liliana G Bordeianou, David L Berger, Jennifer Y Wo
PURPOSE: To describe the outcomes and toxicities of the largest cohort to date of patients with anal squamous cell carcinoma uniformly treated with concurrent chemoradiation using dose-painted intensity modulated radiation therapy (DP-IMRT) according to RTOG 0529. METHODS AND MATERIALS: We identified 99 eligible patients with anal cancer who were treated at our institution with definitive chemoradiation using DP-IMRT between 2005 and 2015 per RTOG 0529 dosing guidelines...
April 2017: Advances in Radiation Oncology
https://www.readbyqxmd.com/read/28731074/left-hippocampus-sparing-whole-brain-radiotherapy-wbrt-a-planning-study
#11
Tomas Kazda, Miroslav Vrzal, Tomas Prochazka, Petr Dvoracek, Petr Burkon, Petr Pospisil, Adam Dziacky, Tomas Nikl, Radim Jancalek, Pavel Slampa, Radek Lakomy
AIMS: Unilateral sparing of the dominant (left) hippocampus during whole brain radiotherapy (WBRT) could mitigate cognitive decline, especially verbal memory, similar to the widely investigated bilateral hippocampus avoidance (HA-WBRT). The aim of this planning study is dosimetrical comparison of HA-WBRT with only left hippocampus sparing (LHA-WBRT) plans. METHODS: HA-WBRT plans for 10 patients were prepared in accordance with RTOG 0933 trial and served as baseline for comparisons with several LHA-WBRT plans prepared with an effort: 1) to maintain the same left hippocampus dosimetry ("BEST PTV") and 2) to maintain same dosimetry in planning target volume as in HA-WBRT ("BEST LH")...
July 20, 2017: Biomedical Papers of the Medical Faculty of the University Palacký, Olomouc, Czechoslovakia
https://www.readbyqxmd.com/read/28726173/recurrent-glioblastomas-in-the-elderly-after-maximal-first-line-treatment-does-preserved-overall-condition-warrant-a-maximal-second-line-treatment
#12
Marc Zanello, Alexandre Roux, Renata Ursu, Sophie Peeters, Luc Bauchet, Georges Noel, Jacques Guyotat, Pierre-Jean Le Reste, Thierry Faillot, Fabien Litre, Nicolas Desse, Evelyne Emery, Antoine Petit, Johann Peltier, Jimmy Voirin, François Caire, Jean-Luc Barat, Jean-Rodolphe Vignes, Philippe Menei, Olivier Langlois, Edouard Dezamis, Antoine Carpentier, Phong Dam Hieu, Philippe Metellus, Johan Pallud
A growing literature supports maximal safe resection followed by standard combined chemoradiotherapy (i.e. maximal first-line therapy) for selected elderly glioblastoma patients. To assess the prognostic factors from recurrence in elderly glioblastoma patients treated by maximal safe resection followed by standard combined chemoradiotherapy as first-line therapy. Multicentric retrospective analysis comparing the prognosis and optimal oncological management of recurrent glioblastomas between 660 adult patients aged of < 70 years (standard group) and 117 patients aged of ≥70 years (elderly group) harboring a supratentorial glioblastoma treated by maximal first-line therapy...
July 19, 2017: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/28712717/radiobiological-evaluation-of-prostate-cancer-imrt-and-conformal-rt-plans-using-different-treatment-protocols
#13
Panayiotis Mavroidis, Georgios Komisopoulos, Courtney Buckey, Margarita Mavroeidi, Gregory P Swanson, Dimos Baltas, Nikos Papanikolaou, Sotirios Stathakis
The purpose of this study is to evaluate the clinical efficacy of both step-and-shoot IMRT and 3D-Conformal Radiation Therapy modalities (CRT) in treating prostate cancer using radiobiological measures. Another aim was to estimate the risks for developing secondary malignancies in bladder and rectum due to radiotherapy from the corresponding modalities. The treatment plans of ten prostate cancer patients were developed using IMRT and CRT. For the IMRT plans, two beam energies and two treatment protocols were used (the RTOG 0415 and a most restrictive one proposed by Fox Chase Cancer Center (FCCC))...
July 13, 2017: Physica Medica: PM
https://www.readbyqxmd.com/read/28711478/dosimetric-comparison-of-peripheral-nsclc-sbrt-using-acuros-xb-and-aaa-calculation-algorithms
#14
Chloe C H Ong, Khong Wei Ang, Roger C X Soh, Kah Ming Tin, Jerome H H Yap, James C L Lee, Christopher M Bragg
There is a concern for dose calculation in highly heterogenous environments such as the thorax region. This study compares the quality of treatment plans of peripheral non-small cell lung cancer (NSCLC) stereotactic body radiation therapy (SBRT) using 2 calculation algorithms, namely, Eclipse Anisotropic Analytical Algorithm (AAA) and Acuros External Beam (AXB), for 3-dimensional conformal radiation therapy (3DCRT) and volumetric-modulated arc therapy (VMAT). Four-dimensional computed tomography (4DCT) data from 20 anonymized patients were studied using Varian Eclipse planning system, AXB, and AAA version 10...
July 12, 2017: Medical Dosimetry: Official Journal of the American Association of Medical Dosimetrists
https://www.readbyqxmd.com/read/28699351/ultrahypofractionated-cyberknifetm-based-stereotactic-radiotherapy-versus-conventional-radiotherapy-in-patients-with-prostate-cancer-acute-toxicity-evaluation-in-two-phase-ii-prospective-studies
#15
G Głowacki, W Majewski, P Wojcieszek, K Grabinska, G Wozniak, L Miszczyk
Our purpose was to compare the acute toxicity of ultrahypofractionated CyberKnifeTM based stereotactic radiotherapy (SBRT Arm) and conventional radiotherapy (EBRT Arm) in prostate cancer patients. Two-hundred-sixteen men with prostate cancer were enrolled in our prospective studies. One-hundred and nine were irradiated using CyberKnife to total dose of 36,25 Gy in 5 fractions. One-hundred and seven were irradiated conventionally to total dose of 76 Gy in 38 fractions. Mean age of patients was 69. Acute genitourinary (GU) and gastrointestinal (GI) adverse-events were collected...
2017: Neoplasma
https://www.readbyqxmd.com/read/28691425/tolerance-of-combined-radiochemotherapy-in-cervical-cancer-patients
#16
Barbara Izmajłowicz, Małgorzata Rusiecka, Aleksandra Sztuder, Marcin Stępień, Agnieszka Ignatowicz- Pacyna, Beata Słocka- Romaniuk, Zbigniew Mazur, Jan Kornafel
BACKGROUND: Radiochemotherapy in cervical cancer was implemented to clinical practice based on five randomized clinical trials, published at the end of 20th century, which showed improvement in total and symptomless survivals by about 10 to 18 %. The increase of therapeutic index of such treatment can take place only at the advantage of the efficiency over the increase of its toxicity. Thus, it is necessary to monitor treatment reaction during radiochemotherapy. OBJECTIVES: The aim of this study is to assess the acute post-radiation reaction during radiochemotherapy for cervical cancer and the analysis of the reasons of the unplanned course of combined treatment...
June 27, 2017: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
https://www.readbyqxmd.com/read/28689281/optimal-fdg-pet-ct-volumetric-parameters-for-risk-stratification-in-patients-with-locally-advanced-non-small-cell-lung-cancer-results-from-the-acrin-6668-rtog-0235-trial
#17
Ali Salavati, Fenghai Duan, Bradley S Snyder, Bo Wei, Sina Houshmand, Benjapa Khiewvan, Adam Opanowski, Charles B Simone, Barry A Siegel, Mitchell Machtay, Abass Alavi
PURPOSE: In recent years, multiple studies have demonstrated the value of volumetric FDG-PET/CT parameters as independent prognostic factors in patients with non-small cell lung cancer (NSCLC). We aimed to determine the optimal cut-off points of pretreatment volumetric FDG-PET/CT parameters in predicting overall survival (OS) in patients with locally advanced NSCLC and to recommend imaging biomarkers appropriate for routine clinical applications. METHODS: Patients with inoperable stage IIB/III NSCLC enrolled in ACRIN 6668/RTOG 0235 were included...
July 8, 2017: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/28687830/effect-of-the-addition-of-cetuximab-to-paclitaxel-cisplatin-and-radiation-therapy-for-patients-with-esophageal-cancer-the-nrg-oncology-rtog-0436-phase-3-randomized-clinical-trial
#18
Mohan Suntharalingam, Kathryn Winter, David Ilson, Adam P Dicker, Lisa Kachnic, André Konski, A Bapsi Chakravarthy, Christopher J Anker, Harish Thakrar, Naomi Horiba, Ajay Dubey, Joel S Greenberger, Adam Raben, Jeffrey Giguere, Kevin Roof, Gregory Videtic, Jondavid Pollock, Howard Safran, Christopher H Crane
Importance: The role of epidermal growth factor receptor (EGFR) inhibition in chemoradation strategies in the nonoperative treatment of patients with esophageal cancer remains uncertain. Objective: To evaluate the benefit of cetuximab added to concurrent chemoradiation therapy for patients undergoing nonoperative treatment of esophageal carcinoma. Design, Setting, and Participants: A National Cancer Institute (NCI) sponsored, multicenter, phase 3, randomized clinical trial open to patients with biopsy-proven carcinoma of the esophagus...
July 6, 2017: JAMA Oncology
https://www.readbyqxmd.com/read/28666552/single-dose-high-dose-rate-brachytherapy-compared-to-two-and-three-fractions-for-locally-advanced-prostate-cancer
#19
Peter Hoskin, Ana Rojas, Peter Ostler, Robert Hughes, Roberto Alonzi, Gerry Lowe
BACKGROUND: Single-dose high-dose-rate brachytherapy (HDR-BT), in a Phase-II study, was compared to two or three fractions in intermediate and high-risk localized prostate cancer. PATIENTS AND METHODS: 293 patients received 1×19Gy or 1×20Gy (A=49), 2×13Gy (B=138), or 3×10.5Gy (C=106) and assessed with prospective measures of serum PSA, late genitourinary (GU) and gastrointestinal (GI) morbidity using RTOG scales and the International Prostate Symptom Score (IPSS)...
June 27, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/28666368/cost-effectiveness-of-radiation-and-chemotherapy-for-high-risk-low-grade-glioma
#20
Yushen Qian, Satoshi Maruyama, Haju Kim, Erqi L Pollom, Kiran A Kumar, Alexander L Chin, Jeremy P Harris, Daniel T Chang, Allison Pitt, Eran Bendavid, Douglas K Owens, Ben Y Durkee, Scott G Soltys
BACKGROUND: The addition of PCV (procarbazine, lomustine, vincristine) chemotherapy to radiotherapy (RT) for patients with high-risk (≥ 40 years old or sub-totally resected) low-grade glioma (LGG) results in an absolute median survival benefit of over 5 years. We evaluated the cost-effectiveness of this treatment strategy. METHODS: A decision tree with an integrated three-state Markov model was created to follow patients with high risk LGG after surgery treated with RT vs...
June 28, 2017: Neuro-oncology
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