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Selective internal radiation

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https://www.readbyqxmd.com/read/28636805/a-hybrid-phantom-system-for-patient-skin-and-organ-dosimetry-in-fluoroscopically-guided-interventions
#1
David Borrego, Daniel Siragusa, Stephen Balter, Wesley E Bolch
To investigate calibrations for improved estimates of skin dose and to develop software for computing absorbed organ doses for fluoroscopically guided interventions (FGIs) with the use of radiation dose structured reports (RDSR) and the UF/NCI family of hybrid computational phantoms METHODS AND MATERIALS: Institutional review board approval was obtained for this retrospective study in which ten RDSRs were selected for their high cumulative reference air kerma values. Skin doses were computed using the University of Florida's rapid in-clinic peak skin dose algorithm (or UF-RIPSA)...
June 21, 2017: Medical Physics
https://www.readbyqxmd.com/read/28634672/hcc-locoregional-therapies-yttrium-90-y-90-selective-internal-radiation-therapy-sirt
#2
REVIEW
İsa Burak Güney
No abstract text is available yet for this article.
June 21, 2017: Journal of Gastrointestinal Cancer
https://www.readbyqxmd.com/read/28632200/the-beginning-and-development-of-the-theranostic-approach-in-nuclear-medicine-as-exemplified-by-the-radionuclide-pair-86-y-and-90-y
#3
Frank Rösch, Hans Herzog, Syed M Qaim
In the context of radiopharmacy and molecular imaging, the concept of theranostics entails a therapy-accompanying diagnosis with the aim of a patient-specific treatment. Using the adequate diagnostic radiopharmaceutical, the disease and the state of the disease are verified for an individual patient. The other way around, it verifies that the radiopharmaceutical in hand represents a target-specific and selective molecule: the "best one" for that individual patient. Transforming diagnostic imaging into quantitative dosimetric information, the optimum radioactivity (expressed in maximum radiation dose to the target tissue and tolerable dose to healthy organs) of the adequate radiotherapeutical is applied to that individual patient...
June 20, 2017: Pharmaceuticals
https://www.readbyqxmd.com/read/28624290/feasibility-of-reducing-differences-in-estimated-doses-in-nuclear-medicine-between-a-patient-specific-and-a-reference-phantom
#4
Alexandra Zvereva, Helmut Schlattl, Maria Zankl, Janine Becker, Nina Petoussi-Henss, Yeon Soo Yeom, Chan Hyeong Kim, Christoph Hoeschen, Katia Parodi
The feasibility of reducing the differences between patient-specific internal doses and doses estimated using reference phantoms was evaluated. Relatively simple adjustments to a polygon-surface ICRP adult male reference phantom were applied to fit selected individual dimensions using the software Rhinoceros®4.0. We tested this approach on two patient-specific phantoms: the biggest and the smallest phantoms from the Helmholtz Zentrum München library. These phantoms have unrelated anatomy and large differences in body-mass-index...
June 14, 2017: Physica Medica: PM
https://www.readbyqxmd.com/read/28621586/the-cooler-code-a-novel-analytical-approach-to-calculate-subcellular-energy-deposition-by-internal-electron-emitters
#5
Mattia Siragusa, Giorgio Baiocco, Pil M Fredericia, Werner Friedland, Torsten Groesser, Andrea Ottolenghi, Mikael Jensen
COmputation of Local Electron Release (COOLER), a software program designed for dosimetry assessment at the cellular/subcellular scale, with a given distribution of administered low-energy electron-emitting radionuclides in cellular compartments, which remains a critical step in risk/benefit analysis for advancements in internal radiotherapy. The software is intended to overcome the main limitations of the medical internal radiation dose (MIRD) formalism for calculations of cellular S-values (i.e., dose to a target region in the cell per decay in a given source region), namely, the use of the continuous slowing down approximation (CSDA) and the assumption of a spherical cell geometry...
June 16, 2017: Radiation Research
https://www.readbyqxmd.com/read/28610779/survival-and-complications-following-surgery-and-radiation-for-localized-prostate-cancer-an-international-collaborative-review
#6
REVIEW
Christopher J D Wallis, Adam Glaser, Jim C Hu, Hartwig Huland, Nathan Lawrentschuk, Daniel Moon, Declan G Murphy, Paul L Nguyen, Matthew J Resnick, Robert K Nam
BACKGROUND: Evaluation of treatment options for localized prostate cancer (PCa) remains among the highest priorities for comparative effectiveness research. Surgery and radiotherapy (RT) are the two interventions most commonly used. OBJECTIVE: To provide a critical narrative review of evidence of the comparative effectiveness and harms of surgery and RT in the treatment of localized PCa. EVIDENCE ACQUISITION: A collaborative critical narrative review of the literature was conducted...
June 10, 2017: European Urology
https://www.readbyqxmd.com/read/28608305/quality-assurance-of-the-preopanc-trial-2012-003181-40-for-preoperative-radiochemotherapy-in-pancreatic-cancer-the-dummy-run
#7
Eva Versteijne, Eelco Lens, Astrid van der Horst, Arjan Bel, Jorrit Visser, Cornelis J A Punt, Mustafa Suker, Casper H J van Eijck, Geertjan van Tienhoven
BACKGROUND: The Dutch Pancreatic Cancer Group initiated the national, multicentre, controlled PREOPANC trial, randomising between preoperative radiochemotherapy and direct explorative laparotomy for patients with (borderline) resectable pancreatic cancer. The aim of this dummy run is to evaluate compliance with the radiotherapy protocol of this trial, and the quality of delineation and radiation plans. METHODS: Eleven radiation oncology departments open for accrual of patients in the PREOPANC trial were provided with all necessary information of a selected 'dummy' patient...
June 12, 2017: Strahlentherapie und Onkologie: Organ der Deutschen Röntgengesellschaft ... [et Al]
https://www.readbyqxmd.com/read/28605745/current-standard-and-future-perspectives-in-non-surgical-therapy-for-hepatocellular-carcinoma
#8
Tobias Eggert, Tim F Greten
BACKGROUND: Hepatocellular carcinoma (HCC) is an aggressive liver tumor with a poor 5-year survival rate. Many HCCs are not amenable to surgical resection, because of tumor size, location, or because of the patient's poor liver function, a common obstacle to HCC therapy, because HCCs almost always develop in chronically inflamed livers. SUMMARY: In recent years, many efforts have been made to improve patient survival by conducting clinical trials investigating local and systemic treatment options for patients with unresectable tumors...
June 13, 2017: Digestion
https://www.readbyqxmd.com/read/28598685/radioembolization-for-unresectable-intrahepatic-cholangiocarcinoma-review-of-safety-response-evaluation-criteria-in-solid-tumors-1-1-imaging-response-and-survival
#9
Nathaniel C Swinburne, Derek M Biederman, Cecilia Besa, Nora E Tabori, Aaron M Fischman, Rahul S Patel, Francis Scott Nowakowski, Ganesh Gunasekaran, Myron E Schwartz, Robert A Lookstein, Edward Kim
The optimal palliative treatment for unresectable intrahepatic cholangiocarcinoma (ICC) remains controversial. While selective internal radiation therapy (SIRT) using yttrium-90 microspheres is a well-accepted treatment for hepatocellular carcinoma, data related to its use for locally advanced ICC remain relatively scarce. Twenty-nine patients (mean age 66 ± 11 years; 15 female) with unresectable biopsy-proven ICC treated with SIRT between June 2008 and April 2015 were retrospectively evaluated for post-treatment toxicity, overall survival, and imaging response using response evaluation criteria in solid tumors (RECIST) 1...
June 2017: Cancer Biotherapy & Radiopharmaceuticals
https://www.readbyqxmd.com/read/28593566/cellular-and-molecular-targets-for-the-immunotherapy-of-hepatocellular-carcinoma
#10
REVIEW
Vikrant Rai, Joe Abdo, Abdullah N Alsuwaidan, Swati Agrawal, Poonam Sharma, Devendra K Agrawal
Liver cancer is the sixth most common cancer worldwide and 3rd most common cause of cancer-related death. Hepatocellular carcinoma (HCC) represents more than 90% of primary liver cancer and is a major public health problem. Due to the advanced stages of HCC at the time of diagnosis, utilizing the conventional treatment for solid tumors frequently ends with treatment failure, recurrence, or poor survival. HCC is highly refractory to chemotherapy and other systemic treatments, and locoregional therapies or selective internal radiation therapies are largely palliative...
June 7, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28588749/strategies-to-tackle-the-challenges-of-external-beam-radiotherapy-for-liver-tumors
#11
REVIEW
Michael I Lock, Jonathan Klein, Hans T Chung, Joseph M Herman, Edward Y Kim, William Small, Nina A Mayr, Simon S Lo
Primary and metastatic liver cancer is an increasingly common and difficult to control disease entity. Radiation offers a non-invasive treatment alternative for these patients who often have few options and a poor prognosis. However, the anatomy and aggressiveness of liver cancer poses significant challenges such as accurate localization at simulation and treatment, management of motion and appropriate selection of dose regimen. This article aims to review the options available and provide information for the practical implementation and/or improvement of liver cancer radiation programs within the context of stereotactic body radiotherapy and image-guided radiotherapy guidelines...
May 18, 2017: World Journal of Hepatology
https://www.readbyqxmd.com/read/28578920/clinical-factors-and-dosimetry-associated-with-the-development-of-prostate-brachytherapy-related-urethral-strictures-a-matched-case-control-study
#12
Sandeep Singhal, Muhammad F Jamaluddin, Emma Lee, Ronald S Sloboda, Matthew Parliament, Nawaid Usmani
PURPOSE: Urethral strictures are a rare complication of prostate brachytherapy (BXT), with prior studies showing radiation dose to the bulbomembranous urethra as being associated with stricture formation. This retrospective case-control study explored clinical and dosimetric parameters associated with the development of BXT-related urethral strictures. METHODS AND MATERIALS: A cohort of 34 patients developed urethral strictures after BXT at our institution for the period of 2008-2014...
May 31, 2017: Brachytherapy
https://www.readbyqxmd.com/read/28572487/biodistribution-and-radiation-dosimetry-of-18-f-ftc-146-in-humans
#13
Trine Hjørnevik, Peter W Cipriano, Bin Shen, Jun Hyung Park, Praveen Gulaka, Dawn Holley, Harsh Gandhi, Daehyun Yoon, Erik S Mittra, Greg Zaharchuk, Sanjiv S Gambhir, Christopher R McCurdy, Frederick T Chin, Sandip Biswal
The purpose of this study is to assess safety, biodistribution and radiation dosimetry in humans for the highly selective sigma-1 receptor (S1R) positron emission tomography (PET) agent (18)F-6-(3-fluoropropyl)-3-(2-(azepan-1-yl)ethyl)benzo[d]thiazol-2(3H)-one ((18)F-FTC-146). Methods: Ten healthy volunteers (HV; five female, five male; age: 34.3 ± 6.5 years) were recruited, and written informed consent was obtained from all participants. Series of whole-body PET/magnetic resonance imaging (PET/MRI) examinations were acquired for up to three hours after injection (357...
June 1, 2017: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/28541635/safety-of-ovarian-preservation-in-premenopausal-women-with-stage-i-uterine-sarcoma
#14
Dimitrios Nasioudis, Eloise Chapman-Davis, Melissa Frey, Kevin Holcomb
OBJECTIVE: To evaluate the oncologic safety of ovarian preservation (OP) in premenopausal women diagnosed with the International Federation of Gynecology and Obstetrics (FIGO) stage I uterine sarcoma. METHODS: The National Cancer Institute's Surveillance, Epidemiology, and End Results database was accessed and a cohort of women aged ≤50 diagnosed between 1988-2013 with a sarcoma limited to the uterus was drawn. Based on site-specific surgery codes, women who underwent hysterectomy with or without oophorectomy and did not receive radiation therapy were selected for further analysis...
July 2017: Journal of Gynecologic Oncology
https://www.readbyqxmd.com/read/28540671/multidisciplinary-management-of-mycosis-fungoides-s%C3%A3-zary-syndrome
#15
REVIEW
Sara Berg, Jennifer Villasenor-Park, Paul Haun, Ellen J Kim
PURPOSE OF REVIEW: Diagnosis and management of mycosis fungoides and Sézary syndrome (MF/SS) require accurate clinicopathological correlation and a multidisciplinary approach. We reviewed major advances in the field regarding diagnostic and prognostic tools as well as skin-directed therapies (SDTs) and systemic agents for MF/SS published in the past 2 years. RECENT FINDINGS: Improved technology (T-cell receptor high-throughput sequencing) and increased multicenter collaboration (Cutaneous Lymphoma International Consortium) have led to diagnostic/prognostic advances...
June 2017: Current Hematologic Malignancy Reports
https://www.readbyqxmd.com/read/28520475/kombucha-multimicrobial-community-under-simulated-spaceflight-and-martian-conditions
#16
O Podolich, I Zaets, O Kukharenko, I Orlovska, O Reva, L Khirunenko, M Sosnin, A Haidak, S Shpylova, E Rabbow, M Skoryk, M Kremenskoy, R Demets, N Kozyrovska, J-P de Vera
Kombucha microbial community (KMC) produces a cellulose-based biopolymer of industrial importance and a probiotic beverage. KMC-derived cellulose-based pellicle film is known as a highly adaptive microbial macrocolony-a stratified community of prokaryotes and eukaryotes. In the framework of the multipurpose international astrobiological project "BIOlogy and Mars Experiment (BIOMEX)," which aims to study the vitality of prokaryotic and eukaryotic organisms and the stability of selected biomarkers in low Earth orbit and in a Mars-like environment, a cellulose polymer structural integrity will be assessed as a biomarker and biotechnological nanomaterial...
May 2017: Astrobiology
https://www.readbyqxmd.com/read/28514929/five-year-outcomes-from-a-prospective-trial-of-image-guided-accelerated-hypofractionated-proton-therapy-for-prostate-cancer
#17
Randal H Henderson, Curtis Bryant, Bradford S Hoppe, R Charles Nichols, William M Mendenhall, Stella Flampouri, Zhong Su, Zuofeng Li, Christopher G Morris, Nancy P Mendenhall
PURPOSE: To report 5-year outcomes of a prospective trial of image-guided accelerated hypofractionated proton therapy (AHPT) for prostate cancer. PATIENTS AND METHODS: 215 prostate cancer patients accrued to a prospective institutional review board-approved trial of 70Gy(RBE) in 28 fractions for low-risk disease (n = 120) and 72.5Gy(RBE) in 29 fractions for intermediate-risk disease (n = 95). This trial excluded patients with prostate volumes of ≥60 cm(3) or International Prostate Symptom Scores (IPSS) of ≥15, patients on anticoagulants or alpha-blockers, and patients in whom dose-constraint goals for organs at risk (OAR) could not be met...
July 2017: Acta Oncologica
https://www.readbyqxmd.com/read/28506520/the-evolving-role-of-proton-beam-therapy-for-sarcomas
#18
S Frisch, B Timmermann
As an alternative to conventional photon-based radiotherapy, radiation with protons is recognised to offer considerable advantages. Today, central nervous system tumours, various sarcomatous tumours, childhood cancer and head and neck tumours are commonly treated with proton therapy. This review evaluates current data from clinical and dosimetric trials on the treatment of selected sarcomatous tumours like rhabdomyosarcoma, osteosarcoma, chordoma, chondrosarcoma and Ewing sarcoma. Special considerations for paediatric tumours and future prospects of proton therapy are outlined...
May 12, 2017: Clinical Oncology: a Journal of the Royal College of Radiologists
https://www.readbyqxmd.com/read/28499659/-spinal-stereotactic-body-radiotherapy-french-assessment-in-2016
#19
I Pougnet, E Jaegle, R Garcia, F Tessier, J C Faivre, G Louvel, E Gross, L Gonzague, M Benchalal, A Ducteil, S Supiot, D Autret, J B Clavier, X Mirabel, A Bellière, D Wdowczyk, S Heymann, I Barillot, B de La Lande, V Passerat, M P Sunyach, F Lipinski, D Thibouw, F Guichard, B Chauvet, J Thariat, A Arnaud
PURPOSE: Stereotactic body radiotherapy to vertebral column remains uncommon practice and only relevant in selected group of patients. The main objective of the study was to describe the current state of medical practices of stereotactic body radiotherapy to vertebral column in France in 2016 and to assess the diversity of practices to identify areas for improvement and establish a common database set for this technique. MATERIALS AND METHODS: A questionnaire was written with contribution of a medical physicist, a radiation oncologist, an information technologist and a radiotherapy resident...
May 9, 2017: Cancer Radiothérapie: Journal de la Société Française de Radiothérapie Oncologique
https://www.readbyqxmd.com/read/28498257/the-addition-of-adjuvant-chemotherapy-to-radiation-in-early-stage-high-risk-endometrial-cancer-survival-outcomes-and-patterns-of-care
#20
Dustin Boothe, Ned Williams, Bismarck Odei, Matthew M Poppe, Theresa L Werner, Gita Suneja, David K Gaffney
OBJECTIVE: Early-stage high-risk endometrial cancer (HREC) treated with adjuvant radiotherapy (aRT) alone has been associated with an increased risk of distant relapse. The addition of chemotherapy to radiotherapy (aCRT) may benefit overall survival (OS). We investigated the patterns-of-care and OS benefit of aCRT in HREC by analyzing a large national registry. METHODS: Our query was limited to patients with the International Federation of Gynecology and Obstetrics stage IB and II HREC with either papillary serous, clear cell, or grade 3 adenocarcinoma, diagnosed between 2004 and 2012...
June 2017: International Journal of Gynecological Cancer
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