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https://www.readbyqxmd.com/read/29235993/raman-micro-spectroscopy-analysis-of-human-lens-epithelial-cells-exposed-to-a-low-dose-range-of-ionizing-radiation
#1
Christian Harry Allen, Achint Kumar, Sami Qutob, Balazs J Nyiri, Vinita Chauhan, Sangeeta Murugkar
Recent findings in populations exposed to ionizing radiation (IR) indicate dose-related lens opacification occurs at much lower doses (< 2Gy) than indicated in radiation protection guidelines. As a result, research efforts are now being directed towards identifying early predictors of lens degeneration resulting in cataractogenesis. In this study, Raman micro-spectroscopy was used to investigate the effects of varying doses of radiation, ranging from 0.01 Gy to 5 Gy, on human lens epithelial (HLE) cells which were chemically fixed 24 hrs post-irradiation...
December 13, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/29235569/s-1-chemotherapy-and-intensity-modulated-radiotherapy-after-d1-d2-lymph-node-dissection-in-patients-with-node-positive-gastric-cancer-a-phase-i-ii-study
#2
X Wang, D B Zhao, L Yang, Y Chi, Y Tang, N Li, S L Wang, Y W Song, Y P Liu, W Y Liu, H Ren, T Zhang, J Y Wang, X S Chen, H Fang, W H Wang, Y X Li, J Jin
BACKGROUND: This phase I/II clinical trial investigated S-1 administered with intensity-modulated radiotherapy (IMRT) as adjuvant therapy for node-positive gastric cancer. Patients had undergone radical resection and D1/D2 lymph node dissection. METHODS: In phase I, patients received adjuvant chemoradiotherapy of IMRT (45 Gy in 25 fractions) with concurrent S-1 administered on a dose-escalation schedule to determine the recommended dose (RD). In phase II, the safety and efficacy of the RD of S-1 combined with IMRT were assessed...
December 12, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/29235518/the-efficacy-of-intensity-modulated-radiation-therapy-in-treating-thyroid-associated-ophthalmopathy-and-predictive-factors-for-treatment-response
#3
Yong-Jiang Li, Yong Luo, Xiao-Qi Xie, Wei-Min He, Cheng Yi, Ping Li, Feng Wang
The study evaluated clinical efficacy of intensity modulated radiation therapy (IMRT) in treating patients with thyroid-associated ophthalmopathy (TAO) and defined predictive factors that associated with treatment response. A total of 178 TAO patients were treated with retro-orbital IMRT with radiation dose of 20 Gy in 10 fractions. The immediate and long-term treatment response and complications were evaluated. Besides, logistic-regression analysis was conducted to identify possible predictive factors. TAO symptom score significantly fell from the initiation to 6-month post-treatment (P < 0...
December 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29235052/salvage-fractionated-stereotactic-re-irradiation-fsrt-for-patients-with-recurrent-high-grade-gliomas-progressed-after-bevacizumab-treatment
#4
Wenyin Shi, Erik S Blomain, Joshua Siglin, Joshua J Palmer, Tu Dan, Yang Wang, Maria Werner-Wasik, Jon Glass, Lyndon Kim, Voichita Bar Ad, Deepak Bhamidipati, James J Evans, Kevin Judy, Christopher J Farrell, David W Andrews
Bevacizumab failure is a major clinical problem in the management of high grade gliomas (HGG), with a median overall survival (OS) of < 4 months. This study evaluated the feasibility and efficacy of fractionated stereotactic re-irradiation (FSRT) for patients progressed after Bevacizumab treatment. Retrospective review was conducted of 36 patients treated with FSRT after progression on bevacizumab. FSRT was most commonly delivered in 3.5 Gy fractions to a total dose of 35 Gy. Survival from initial diagnosis, as well as from recurrence and re-irradiation, were utilized as study endpoints...
December 12, 2017: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/29234836/trans-urethral-ureteral-stent-replacement-technique-trust-10-year-experience-in-1168-patients
#5
Gianpaolo Carrafiello, Andrea Coppola, Giuseppe De Marchi, Federico Fontana, Filippo Piacentino, Mario Petrillo, Alessandro Taborelli, Salvatore Alessio Angileri, Genti Xhepa, Nicola Macchione, Alessandro Bacuzzi, Alberto Marconi, Anna Maria Ierardi
OBJECTIVES: To affirm technical success, clinical success and safety of fluoroscopically guided transurethral replacement of double-J (DJ) ureteral stents. METHODS: From January 2005 to December 2015, in a follow-up period ranging from 9 to 73 months, we replaced 6167 DJ ureteral stents in 3221 procedures in 1168 patients. All the procedures were performed in the angiography suite under fluoroscopic control. RESULTS: Technical success was achieved in 97...
December 12, 2017: Cardiovascular and Interventional Radiology
https://www.readbyqxmd.com/read/29234568/long-term-quality-of-life-of-retroperitoneal-sarcoma-patients-treated-with-pre-operative-radiotherapy-and-surgery
#6
Philip Wong, Zahra Kassam, Amanda N Springer, Rebecca Gladdy, Peter Chung, Jolie Ringash, Charles Catton
PURPOSE: Retroperitoneal sarcomas (RPS) are connective tissue cancers that are often large and anatomically in close proximity to critical and radiation-sensitive normal structures and organs within the abdomen and pelvis. The management of RPS may include preoperative radiotherapy (RT) and surgery. We aimed to examine how treatment-related toxicities affect patient quality of life (QOL).  Methods and materials: Within two prospective cohort studies, 48 RPS patients who were treated with preoperative RT from 1998-2012 were recruited and assessed for QOL (EORTC-QLQ-C30) and to determine toxicities potentially related to RT and surgery (graded using CTCAE V...
October 11, 2017: Curēus
https://www.readbyqxmd.com/read/29234040/efficacy-and-safety-of-stereotactic-radiosurgery-for-pulmonary-metastases-from-osteosarcoma-experience-in-73-patients
#7
Wenxi Yu, Zimei Liu, Lina Tang, Feng Lin, Yang Yao, Zan Shen
Osteosarcoma pulmonary metastases are typically treated with resection and/or chemotherapy. We hypothesize that stereotactic radiosurgery (SRS) can be an alternative to surgery that can achieve high rates of local control with limited toxicity. From January 2005 to December 2013, 73 patients who developed pulmonary metastasis during period of adjuvant chemotherapy or follow-up were analyzed. 33 patients were treated by stereotactic radiosurgery using the body gamma-knife system. A total dose of 50 Gy was delivered at 5 Gy/fraction to the 50% isodose line covering the planning target volume, whereas a total dose of 70 Gy was delivered at 7 Gy/fraction to the gross target volume...
December 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29233523/stereotactic-body-radiation-therapy-for-stage-i-non-small-cell-lung-cancer-the-importance-of-treatment-planning-algorithm-and-evaluation-of-a-tumor-control-probability-model
#8
Nitin Ohri, Wolfgang Tomé, Shalom Kalnicki, Madhur Garg
BACKGROUND: Stereotactic body radiation therapy (SBRT) is increasingly used to treat early-stage non-small cell lung cancer (NSCLC). A previous report introduced the term size-adjusted biologically effective dose (sBED), which accounts for tumor diameter and biologically effective dose (BED) and may be used to predict the likelihood of local control following SBRT. Here we seek to replicate those findings using a separate dataset. METHODS AND MATERIALS: We queried the RSSearch Patient Registry for patients treated with SBRT for stage I NSCLC...
October 7, 2017: Practical Radiation Oncology
https://www.readbyqxmd.com/read/29232383/low-doses-of-oxygen-ion-irradiation-cause-long-term-damage-to-bone-marrow-hematopoietic-progenitor-and-stem-cells-in-mice
#9
Yingying Wang, Jianhui Chang, Xin Li, Rupak Pathak, Vijayalakshmi Sridharan, Tamako Jones, Xiao Wen Mao, Gregory Nelson, Marjan Boerma, Martin Hauer-Jensen, Daohong Zhou, Lijian Shao
During deep space missions, astronauts will be exposed to low doses of charged particle irradiation. The long-term health effects of these exposures are largely unknown. We previously showed that low doses of oxygen ion (16O) irradiation induced acute damage to the hematopoietic system, including hematopoietic progenitor and stem cells in a mouse model. However, the chronic effects of low dose 16O irradiation remain undefined. In the current study, we investigated the long-term effects of low dose 16O irradiation on the mouse hematopoietic system...
2017: PloS One
https://www.readbyqxmd.com/read/29230383/solitary-extramedullary-plasmacytoma-of-the-cricoid-cartilage-case-report
#10
Simone Krebs, Ian Ganly, Ronald Ghossein, Joanna Yang, Joachim Yahalom, Heiko Schöder
Solitary plasmacytoma (SP) is an extremely rare form of hematologic malignancy that can be classified as solitary bone plasmacytoma or solitary extramedullary plasmacytoma. Here, we report a patient who presented with progressive shortness of breath and foreign body sensation in his throat. Fluorodeoxyglucose positron emission tomography/computed tomography (18F-FDG-PET/CT) demonstrated an abnormal FDG-avid soft tissue mass arising from the larynx involving the cricoid cartilage without additional suspicious lesions...
2017: Frontiers in Oncology
https://www.readbyqxmd.com/read/29230230/comparative-performance-of-ground-vs-aerially-assessed-rgb-and-multispectral-indices-for-early-growth-evaluation-of-maize-performance-under-phosphorus-fertilization
#11
Adrian Gracia-Romero, Shawn C Kefauver, Omar Vergara-Díaz, Mainassara A Zaman-Allah, Boddupalli M Prasanna, Jill E Cairns, José L Araus
Low soil fertility is one of the factors most limiting agricultural production, with phosphorus deficiency being among the main factors, particularly in developing countries. To deal with such environmental constraints, remote sensing measurements can be used to rapidly assess crop performance and to phenotype a large number of plots in a rapid and cost-effective way. We evaluated the performance of a set of remote sensing indices derived from Red-Green-Blue (RGB) images and multispectral (visible and infrared) data as phenotypic traits and crop monitoring tools for early assessment of maize performance under phosphorus fertilization...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29229328/outcomes-after-reirradiation-for-recurrent-pediatric-intracranial-ependymoma
#12
Derek S Tsang, Elizabeth Burghen, Paul Klimo, Frederick A Boop, David W Ellison, Thomas E Merchant
PURPOSE: To determine the long-term outcomes and the optimal dose and volume for reirradiation of recurrent pediatric ependymoma. METHODS AND MATERIALS: Patients with recurrent ependymoma treated with a second course of fractionated radiation therapy (RT2) were reviewed retrospectively. Eligible patients had localized, intracranial ependymoma at initial diagnosis that was treated with focal radiation (RT1) without craniospinal irradiation (CSI) and were aged ≤21 years at the time of RT2...
October 13, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/29229327/dose-escalation-using-contact-x-ray-brachytherapy-after-external-beam-radiotherapy-as-nonsurgical-treatment-option-for-rectal-cancer-outcomes-from-a-single-center-experience
#13
Arthur Sun Myint, Fraser McLean Smith, Simon Gollins, Helen Wong, Christopher Rao, Karen Whitmarsh, Raj Sripadam, Paul Rooney, Michael Hershman, D Mark Pritchard
PURPOSE: To review the outcomes of rectal cancer patients treated with a nonsurgical approach using contact x-ray brachytherapy (CXB) when suspicious residual disease (≤3 cm) was present after external beam chemoradiation therapy/radiation therapy (EBCRT/EBRT). METHODS AND MATERIALS: Outcome data for rectal cancer patients referred to our institution from 2003 to 2012 were retrieved from an institutional database. These patients were referred after initial local multidisciplinary team discussion because they were not suitable for, or had refused, surgery...
October 20, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/29229324/comparison-of-36%C3%A2-gy-20%C3%A2-gy-or-no-radiation-therapy-after-6-cycles-of-ebvp-chemotherapy-and-complete-remission-in-early-stage-hodgkin-lymphoma-without-risk-factors-results-of-the-eort-gela-h9-f-intergroup-randomized-trial
#14
José Thomas, Christophe Fermé, Evert M Noordijk, Franck Morschhauser, Théodore Girinsky, Isabelle Gaillard, Pieternella J Lugtenburg, Marc André, Marnix L M Lybeert, Aspasia Stamatoullas, Max Beijert, Philippe Hélias, Houchingue Eghbali, Jean Gabarre, Richard W M van der Maazen, Jérôme Jaubert, Krimo Bouabdallah, Olivier Boulat, Judith M Roesink, Bernard Christian, Francisca Ong, Dominique Bordessoule, Gérard Tertian, Hugo Gonzalez, Andrej Vranovsky, Philippe Quittet, Umberto Tirelli, Daphne de Jong, Josée Audouin, Berthe M P Aleman, Michel Henry-Amar
PURPOSE: While patients with early-stage Hodgkin lymphoma (HL) have an excellent outcome with combined treatment, the radiation therapy (RT) dose and treatment with chemotherapy alone remain questionable. This noninferiority trial evaluates the feasibility of reducing the dose or omitting RT after chemotherapy. METHODS AND MATERIALS: Patients with untreated supradiaphragmatic HL without risk factors (age ≥ 50 years, 4 to 5 nodal areas involved, mediastinum-thoracic ratio ≥ 0...
October 27, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/29228638/thoracic-radiation-induced-pleural-effusion-and-risk-factors-in-patients-with-lung-cancer
#15
Jing Zhao, Regina M Day, Jian-Yue Jin, Leslie Quint, Hadyn Williams, Catherine Ferguson, Li Yan, Maurice King, Ahmad Albsheer, Martha Matuszak, Feng-Ming Spring Kong
The risk factors and potential practice implications of radiation-induced pleural effusion (RIPE) are undefined. This study examined lung cancer patients treated with thoracic radiation therapy (TRT) having follow-up computed tomography (CT) or 18F-fluorodeoxyglucose (FDG) positron emission tomography (PET)/CT. Increased volumes of pleural effusion after TRT without evidence of tumor progression was considered RIPE. Parameters of lung dose-volume histogram including percent volumes irradiated with 5-55 Gy (V5-V55) and mean lung dose (MLD) were analyzed by receiver operating characteristic analysis...
November 14, 2017: Oncotarget
https://www.readbyqxmd.com/read/29228390/altered-brain-morphology-after-focal-radiation-reveals-impact-of-off-target-effects-implications-for-white-matter-development-and-neurogenesis
#16
Kiran G Beera, Yu-Qing Li, Jun Dazai, James Stewart, Shannon Egan, Mashal Ahmed, C Shun Wong, David A Jaffray, Brian J Nieman
Background: Children with brain tumors treated with cranial radiation therapy (RT) often exhibit cognitive late effects, commonly associated with reduced white matter (WM) volume and decreased neurogenesis. The impact of radiation damage in particular regions or tissues on brain development as a whole has not been elucidated. Methods: We delivered whole-brain or focal radiation (8 Gy single dose) to infant mice. Focal treatments targeted white matter (anterior commissure), neuronal (olfactory bulbs), or neurogenic (subventricular zone) regions...
November 2, 2017: Neuro-oncology
https://www.readbyqxmd.com/read/29228343/long-term-outcome-following-stereotactic-radiosurgery-for-glomus-jugulare-tumors-a-single-institution-experience-of-20-years
#17
Mayur Sharma, Antonio Meola, Sushma Bellamkonda, Xuefei Jia, Joshua Montgomery, Samuel T Chao, John H Suh, Lilyana Angelov, Gene H Barnett
BACKGROUND: Glomus jugulare tumors (GJTs) are rare benign tumors, which pose significant treatment challenges due to proximity to critical structures. OBJECTIVE: To evaluate the long-term clinical and radiological outcome in patients undergoing stereotactic radiosurgery (SRS) for GJTs through retrospective study. METHODS: Forty-two patients with 43 GJTs were treated using Gamma Knife radiosurgery (GKRS; Elekta AB, Stockholm, Sweden) at our institute from 1997 to 2016...
December 4, 2017: Neurosurgery
https://www.readbyqxmd.com/read/29228263/chromosomal-abnormalities-in-offspring-of-young-cancer-survivors-a-population-based-cohort-study-in-denmark
#18
Betina Frydenlund Nielsen, Anne Aarslev Schmidt, John J Mulvihill, Kirsten Frederiksen, E Janet Tawn, Marilyn Stovall, Christoffer Johansen, John D Boice, Jeanette Falck Winther
To examine whether cancer survivors diagnosed before age 35 years are more likely to have offspring with chromosomal abnormalities than their siblings, chromosomal abnormalities were determined in a population-based cohort of 14 611 offspring (14 580 live-born children and 31 fetuses) of 8945 Danish cancer survivors and 40 859 offspring (40 794 live-born children and 65 fetuses) of 19 536 siblings. Chromosomal abnormalities include numeric and structural abnormalities. Odds ratios were estimated by multiple logistic regression models comparing the risk of chromosomal abnormalities among survivors' offspring with that in siblings' offspring...
December 7, 2017: Journal of the National Cancer Institute
https://www.readbyqxmd.com/read/29228166/long-term-results-of-concurrent-chemoradiotherapy-with-daily-low-dose-continuous-infusion-of-5-fluorouracil-and-cisplatin-ldfp-for-stage-i-ii-esophageal-carcinoma
#19
A Kumabe, J Fukada, R Kota, N Koike, Y Shiraishi, S Seki, K Yoshida, Y Kitagawa, N Shigematsu
We investigated long-term treatment outcomes and the feasibility of chemoradiotherapy consisting of daily-low-dose 5-fluorouracil and cisplatin (LDFP) chemotherapy plus radiotherapy for Stage I-II squamous cell esophageal cancer. Treatment records from the 2000 through 2008 period were reviewed retrospectively. Fractionated radiotherapy was performed with a total dose of 60 Gy delivered in 2 Gy per fraction. LDFP chemotherapy, as continuous infusion of 200 mg/m2 5-fluorouracil combined with one hour infusion of 4 mg/m2 cisplatin, was administered on the same days as radiotherapy...
December 8, 2017: Diseases of the Esophagus: Official Journal of the International Society for Diseases of the Esophagus
https://www.readbyqxmd.com/read/29227151/evaluating-which-plan-quality-metrics-are-appropriate-for-use-in-lung-sbrt
#20
Ravindra Yaparpalvi, Madhur K Garg, Jin Shen, William R Bodner, Dinesh K Mynampati, Aleiya Gafar, Hsiang-Chi Kuo, Amar K Basavatia, Nitin Ohri, Linda X Hong, Shalom Kalnicki, Wolfgang A Tomé
OBJECTIVES: Several dose metrics in the categories - homogeneity, coverage, conformity and gradient have been proposed in literature for evaluating treatment plan quality. In this study, we applied these metrics to characterize and identify the plan quality metrics that would merit plan quality assessment in Lung SBRT dose distributions. METHODS: Treatment plans of 90 Lung SBRT patients, comprising 91 targets, treated in our institution were retrospectively reviewed...
December 11, 2017: British Journal of Radiology
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