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https://www.readbyqxmd.com/read/28297289/a-dosimetric-evaluation-of-knowledge-based-vmat-planning-with-simultaneous-integrated-boosting-for-rectal-cancer-patients
#1
Hao Wu, Fan Jiang, Haizhen Yue, Sha Li, Yibao Zhang
RapidPlan, a commercial knowledge-based optimizer, has been tested on head and neck, lung, esophageal, breast, liver, and prostate cancer patients. To appraise its performance on VMAT planning with simultaneous integrated boosting (SIB) for rectal cancer, this study configured a DVH (dose-volume histogram) estimation model consisting 80 best-effort manual cases of this type. Using the model- generated objectives, the MLC (multileaf collimator) sequences of other 70 clinically approved plans were reoptimized, while the remaining parameters, such as field geometry and photon energy, were maintained...
November 2016: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28297281/a-survey-on-table-tolerances-and-couch-overrides-in-radiotherapy
#2
Bonnie Chinsky, Rakesh Patel, Joshua Panfil, Murat Surucu, John C Roeske
The purpose of this study was to survey current departmental policies on treatment couch overrides and the values of table tolerances used clinically. A 25-question electronic survey on couch overrides and tolerances was sent to full members of the American Association of Physicists in Medicine (AAPM). The first part of the survey asked participants if table overrides were allowed at their institution, who was allowed to perform these overrides, and if imaging was required with overrides. The second part of the survey asked individuals to provide table tolerance data for the following treatment sites: brain/head and neck (H&N), lung, breast, abdomen/pelvis and prostate...
November 2016: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28274404/in-vivo-dosimetry-with-optically-stimulated-luminescent-dosimeters-for-conformal-and-intensity-modulated-radiation-therapy-a-2-year-multicenter-cohort-study
#3
Adam C Riegel, Yu Chen, Ajay Kapur, Laura Apicello, Abraham Kuruvilla, Anthony J Rea, Abolghassem Jamshidi, Louis Potters
PURPOSE: Optically stimulated luminescent dosimeters (OSLDs) are utilized for in vivo dosimetry (IVD) of modern radiation therapy techniques such as intensity modulated radiation therapy (IMRT) and volumetric modulated arc therapy (VMAT). Dosimetric precision achieved with conventional techniques may not be attainable. In this work, we measured accuracy and precision for a large sample of clinical OSLD-based IVD measurements. METHODS AND MATERIALS: Weekly IVD measurements were collected from 4 linear accelerators for 2 years and were expressed as percent differences from planned doses...
March 2017: Practical Radiation Oncology
https://www.readbyqxmd.com/read/28255844/nanosomal-docetaxel-lipid-suspension-a-guide-to-its-use-in-cancer
#4
Kate McKeage
Nanosomal docetaxel lipid suspension (NDLS) [DoceAqualip] is a novel formulation of docetaxel approved in India for the treatment of breast cancer, hormone-refractory prostate cancer, locally advanced squamous cell carcinoma of the head and neck, non-small cell lung cancer and advanced gastric adenocarcinoma. The lipid-based delivery system of NDLS eliminates the need for polysorbate 80 and ethanol, which are contained in the conventional docetaxel formulation and are associated with hypersensitivity reactions and infusion-related toxicities...
March 2, 2017: Clinical Drug Investigation
https://www.readbyqxmd.com/read/28243118/the-different-functions-and-clinical-significances-of-caveolin-1-in-human-adenocarcinoma-and-squamous-cell-carcinoma
#5
REVIEW
Pin Fu, Fuchun Chen, Qi Pan, Xianda Zhao, Chen Zhao, William Chi-Shing Cho, Honglei Chen
Caveolin-1 (Cav-1), a major structural protein of caveolae, is an integral membrane protein which plays an important role in the progression of carcinoma. However, whether Cav-1 acts as a tumor promoter or a tumor suppressor still remains controversial. For example, the tumor-promoting function of Cav-1 has been found in renal cancer, prostate cancer, tongue squamous cell carcinoma (SCC), lung SCC and bladder SCC. In contrast, Cav-1 also plays an inhibitory role in esophagus adenocarcinoma, lung adenocarcinoma and cutaneous SCC...
2017: OncoTargets and Therapy
https://www.readbyqxmd.com/read/28152850/the-impact-of-immigration-status-on-cancer-outcomes-in-ontario-canada
#6
Craig Earle, Hadas Fischer, Ximena Camacho, Refik Saskin, Baiju Shah, Peter Austin, Simron Singh
285 Background: In the delivery of cancer care, barriers to access could potentially result in inferior outcomes and survival. Although a relationship has been demonstrated between disadvantaged socio-economic status and mortality, the impact of immigration on outcomes is less clear. METHODS: Administrative databases were linked to create a cohort of all incident cases of colorectal, lung, prostate, head/neck, breast and hematologic malignancies from Jan 2000 to Dec 2012 in Ontario, Canada...
March 2016: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28152839/development-of-a-radiation-oncology-specific-prospective-data-registry-for-clinical-research-and-quality-improvement-a-clinical-workflow-based-solution
#7
Pin-Chieh Wang, Darlene Verittupong, Weber Shao, Susan Ann McCloskey, Vincent Basehart, Michael L Steinberg, Patrick Kupelian
197 Background: The computerized 'paperless' medical recording system has transformed the modern health information system and serves as an idea platform for cancer registry development, particularly in a specialty like radiation oncology, where technological advances generate unprecedented amounts of data. METHODS: From May 2011 to May 2015, physicians prospectively inputted data on patients seen during consultation in the Department of Radiation Oncology at UCLA. Using a customized interface established between an in-house registry and a commercially-available, hospital-based electronic medical record system (Epic Systems, Inc...
March 2016: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28123722/systematic-analysis-of-the-achaete-scute-complex-like-gene-signature-in-clinical-cancer-patients
#8
Chih-Yang Wang, Payam Shahi, John Ting Wei Huang, Nam Nhut Phan, Zhengda Sun, Yen-Chang Lin, Ming-Derg Lai, Zena Werb
The achaete-scute complex-like (ASCL) family, also referred to as 'achaete-scute complex homolog' or 'achaete-scute family basic helix-loop-helix transcription factor', is critical for proper development of the nervous system and deregulation of ASCL plays a key role in psychiatric and neurological disorders. The ASCL family consists of five members, namely ASCL1, ASCL2, ASCL3, ASCL4 and ASCL5. The ASCL1 gene serves as a potential oncogene during lung cancer development. There is a correlation between increased ASCL2 expression and colon cancer development...
January 2017: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/28113110/development-of-a-model-to-predict-the-10-year-cumulative-risk-of-second-primary-cancer-among-cancer-survivors
#9
Marie Moitry, Michel Velten, Brigitte Trétarre, Simona Bara, Laetitia Daubisse-Marliac, Bénédicte Lapôtre-Ledoux, Xavier Troussard, Florence Molinié, Karine Ligier, Anne-Sophie Woronoff, Véronique Bouvier, Marc Colonna, Delphine Klein, Anne-Valérie Guizard, Jérémie Jégu
BACKGROUND: To develop a prediction model to quantify the cumulative risk of Second Primary Cancer (SPC) among cancer patients given that they survive their disease. METHODS: A cohort of 293,435 patients based on data from twelve French cancer registries was analyzed. For five first cancer sites, SPC incidence rates were estimated using Poisson regression models. The cumulative risks of SPC were computed for different follow-up times. For comparison purpose, the same method was used to estimate the probability of cancer in the general population...
January 20, 2017: Cancer Epidemiology
https://www.readbyqxmd.com/read/28068231/establishing-evidence-based-indications-for-proton-therapy-an-overview-of-current-clinical-trials
#10
Mark V Mishra, Sameer Aggarwal, Soren M Bentzen, Nancy Knight, Minesh P Mehta, William F Regine
PURPOSE: To review and assess ongoing proton beam therapy (PBT) clinical trials and to identify major gaps. METHODS AND MATERIALS: Active PBT clinical trials were identified from clinicaltrials.gov and the World Health Organization International Clinical Trials Platform Registry. Data on clinical trial disease site, age group, projected patient enrollment, expected start and end dates, study type, and funding source were extracted. RESULTS: A total of 122 active PBT clinical trials were identified, with target enrollment of >42,000 patients worldwide...
February 1, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/28046339/su-f-p-51-similarity-analysis-of-the-linear-accelerator-machines-based-on-clinical-simulation
#11
K Li
PURPOSE: To evaluate the clinical rationale for Truebeam and Trilogy Linac machines from Varian Medical System as exchangeable treatment modalities in the same radiation oncology department. METHODS: Intensity Modulated Radiotherapy (IMRT) plans for different diseases were selected for this study. These disease sites included brain, head and neck, breast, lung, and prostate. The parameters selected for this study were the energy amount, Monitor Unit (MU); dose coverage of target reflected by prescription isodose volume(PIV); dose spillage described by the volume of 50% isodoseline of the prescription; and dose homogeneities represented by the maximum dose (MaxD) and the minimum dose (MinD) of target volume (TV) and critical structure (CS)...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28034487/does-the-time-of-radiotherapy-affect-treatment-outcomes-a-review-of-the-literature
#12
S Chan, L Rowbottom, R McDonald, G A Bjarnason, M Tsao, C Danjoux, E Barnes, M Popovic, H Lam, C DeAngelis, E Chow
Circadian rhythm-dependent cell cycle progression produces daily variations in radiosensitivity. This literature review aims to summarise the data on whether radiotherapy outcomes differ depending on administration time. A literature search was conducted on Ovid Medline, Embase, Cochrane Central Register of Controlled Trials and PubMed using key words such as 'radiotherapy', 'circadian rhythm', 'treatment outcome' and 'survival'. Articles evaluating the correlation between radiotherapy time and outcomes in cancer patients were included and relevant information was extracted...
April 2017: Clinical Oncology: a Journal of the Royal College of Radiologists
https://www.readbyqxmd.com/read/28008224/centrosome-a-promising-anti-cancer-target
#13
REVIEW
Yainyrette Rivera-Rivera, Harold I Saavedra
The centrosome, an organelle discovered >100 years ago, is the main microtubule-organizing center in mammalian organisms. The centrosome is composed of a pair of centrioles surrounded by the pericentriolar material (PMC) and plays a major role in the regulation of cell cycle transitions (G1-S, G2-M, and metaphase-anaphase), ensuring the normality of cell division. Hundreds of proteins found in the centrosome exert a variety of roles, including microtubule dynamics, nucleation, and kinetochore-microtubule attachments that allow correct chromosome alignment and segregation...
2016: Biologics: Targets & Therapy
https://www.readbyqxmd.com/read/28007294/-the-frequency-of-cancer-in-france-most-recent-data-and-trends
#14
Laureen Ribassin-Majed, Gwénaël Le-Teuff, Catherine Hill
We present and discuss recent data on the frequency of cancer in France and on cancer survival. In the male population, the incidence of prostate and head and neck cancers diminishes rapidly and the incidence of the other common cancers: lung and colorectal diminishes less markedly; cancer mortality decreases for most sites. In the female population, the incidence of breast cancer diminishes rapidly, the incidence of colorectal and uterus cancers diminish less markedly and the incidence of lung cancer increases very fast: the mortality trends are similar...
January 2017: Bulletin du Cancer
https://www.readbyqxmd.com/read/28001329/fna-biopsy-of-secondary-nonlymphomatous-malignancies-in-salivary-glands-a-multi-institutional-study-of-184-cases
#15
He Wang, Raza S Hoda, William Faquin, Esther Diana Rossi, Nihar Hotchandani, Tianlin Sun, Marc Pusztaszeri, Tommaso Bizzarro, Massimo Bongiovanni, Viren Patel, Nirag Jhala, Guido Fadda, Yun Gong
BACKGROUND: Secondary malignancies of salivary glands (SMSGs) are among the most common malignant neoplasms to involve the salivary glands. Fine-needle aspiration biopsy (FNAB) of SMSG can present diagnostic challenges. The current report presents the largest such FNAB series to date. METHODS: A search of the pathology database from 6 academic institutions identified 184 FNAB cases of nonlymphomatous SMSG. RESULTS: Of the 184 cases, 171 were of the parotid glands, and 13 were of the submandibular glands; 130 patients were men, and 54 were women, and the mean patient age at diagnosis was 68 years...
December 21, 2016: Cancer
https://www.readbyqxmd.com/read/28001084/resveratrol-as-an-anticancer-agent-a-review
#16
Abdur Rauf, Muhammad Imran, Masood Sadiq Butt, Muhammad Nadeem, Dennis G Peters, Mohammad S Mubarak
Owing to their antimicrobial, antioxidant, and anti-inflammatory activity, grapes (Vitis vinifera L.) are the archetypal paradigms of fruits used not only for nutritional purposes but also for exclusive therapeutics. Grapes are a prominent and promising source of phytochemicals, especially resveratrol, a phytoalexin antioxidant found in red grapes which has both chemopreventive and therapeutic effects against various ailments. Resveratrol's role in reducing different human cancers, including breast, cervical, uterine, blood, kidney, liver, eye, bladder, thyroid, esophageal, prostate, brain, lung, skin, gastric, colon, head and neck, bone, ovarian, and cervical, has been reviewed...
December 21, 2016: Critical Reviews in Food Science and Nutrition
https://www.readbyqxmd.com/read/27931212/pdgf-aa-mediates-mesenchymal-stromal-cell-chemotaxis-to-the-head-and-neck-squamous-cell-carcinoma-tumor-microenvironment
#17
Tammara L Watts, Ruwen Cui, Peter Szaniszlo, Vicente A Resto, Don W Powell, Irina V Pinchuk
BACKGROUND: The robust desmoplasia associated with head and neck squamous cell carcinoma (HNSCC) suggests that the tumor microenvironment may be an important component in the pathophysiology of this cancer. Moreover, the high recurrence rate and poor clinical response to chemotherapy and radiation treatment further underscores that the non-cancerous cells of the microenvironment, such as mesenchymal stromal cells (MSCs), cancer associated fibroblasts (CAFs), and pericytes, may be important in the pathophysiology of HNSCC...
December 8, 2016: Journal of Translational Medicine
https://www.readbyqxmd.com/read/27929512/a-survey-on-table-tolerances-and-couch-overrides-in-radiotherapy
#18
Bonnie Chinsky, Rakesh Patel, Joshua Panfil, Murat Surucu, John C Roeske
The purpose of this study was to survey current departmental policies on treatment couch overrides and the values of table tolerances used clinically. A 25-question electronic survey on couch overrides and tolerances was sent to full members of the American Association of Physicists in Medicine (AAPM). The first part of the survey asked participants if table overrides were allowed at their institution, who was allowed to perform these overrides, and if imaging was required with overrides. The second part of the survey asked individuals to provide table tolerance data for the following treatment sites: brain/head and neck (H&N), lung, breast, abdo-men/pelvis and prostate...
November 8, 2016: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/27929483/a-dosimetric-evaluation-of-knowledge-based-vmat-planning-with-simultaneous-integrated-boosting-for-rectal-cancer-patients
#19
Hao Wu, Fan Jiang, Haizhen Yue, Sha Li, Yibao Zhang
RapidPlan, a commercial knowledge-based optimizer, has been tested on head and neck, lung, esophageal, breast, liver, and prostate cancer patients. To appraise its performance on VMAT planning with simultaneous integrated boosting (SIB) for rectal cancer, this study configured a DVH (dose-volume histogram) estimation model consisting 80 best-effort manual cases of this type. Using the model-generated objectives, the MLC (multileaf collimator) sequences of other 70 clinically approved plans were reoptimized, while the remaining parameters, such as field geometry and photon energy, were maintained...
November 8, 2016: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/27852183/trends-in-cancer-incidence-and-survival-for-indigenous-and-non-indigenous-people-in-the-northern-territory
#20
John R Condon, Xiaohua Zhang, Karen Dempsey, Lindy Garling, Steven Guthridge
OBJECTIVE: To assess trends in cancer incidence and survival for Indigenous and non-Indigenous Australians in the Northern Territory. DESIGN: Retrospective analysis of population-based cancer registration data. SETTING: New cancer diagnoses in the NT, 1991-2012. MAIN OUTCOME MEASURES: Age-adjusted incidence rates; rate ratios comparing incidence in NT Indigenous and non-Indigenous populations with that for other Australians; 5-year survival; multivariable Poisson regression of excess mortality...
November 21, 2016: Medical Journal of Australia
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