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Selective internal radiation

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https://www.readbyqxmd.com/read/29306542/prospective-study-to-determine-early-hypertrophy-of-the-contra-lateral-liver-lobe-after-unilobar-yttrium-90-selective-internal-radiation-therapy-in-patients-with-hepatocellular-carcinoma
#1
Jin Yao Teo, John Carson Allen, David Chee Eng Ng, Julianah Bee Abdul Latiff, Su Pin Choo, David Wai-Meng Tai, Albert Su Chong Low, Foong Koon Cheah, Jason Pik Eu Chang, Juinn Huar Kam, Victor T W Lee, Alexander Yaw Fui Chung, Chung Yip Chan, Pierce Kah Hoe Chow, Brian K P Goh
BACKGROUND: Liver resection is a major curative option in patients presenting with hepatocellular carcinoma. An inadequate functional liver remnant is a major limiting factor precluding liver resection. In recent years, hypertrophy of the functional liver remnant after selective internal radiation therapy hypertrophy has been observed, but the degree of hypertrophy in the early postselective internal radiation therapy period has not been well studied. METHODS: We conducted a prospective study on patients undergoing unilobar, Yttrium-90 selective internal radiation therapy for hepatocellular carcinoma to evaluate early hypertrophy at 4-6 weeks and 8-12 weeks after selective internal radiation therapy...
January 3, 2018: Surgery
https://www.readbyqxmd.com/read/29306538/comparison-of-calculated-dose-distributions-reported-as-dose-to-water-and-dose-to-medium-for-intensity-modulated-radiotherapy-of-nasopharyngeal-cancer-patients
#2
Ðeni Smilović Radojčić, Manda Švabić Kolacio, Milan Radojčić, David Rajlić, Božidar Casar, Dario Faj, Slaven Jurković
Advanced dose calculation algorithms for radiation therapy treatment planning can report external beam photon dose 2-sided, in terms of dose-to-medium (Dm) and dose-to-water (Dw). The purpose of our study was to determinate the effect of Dw and Dm reporting modes built in Elekta Monaco treatment planning system on intensity-modulated radiotherapy dose distributions for patients with nasopharyngeal cancer. For 13 patients involved in this retrospective study, 2 plans were created: 1 using Dw and another according to Dm reporting mode...
January 4, 2018: Medical Dosimetry: Official Journal of the American Association of Medical Dosimetrists
https://www.readbyqxmd.com/read/29299370/safety-of-selective-internal-radiation-therapy-sirt-with-yttrium-90-microspheres-combined-with-systemic-anticancer-agents-expert-consensus
#3
REVIEW
Andrew Kennedy, Daniel B Brown, Jonas Feilchenfeldt, John Marshall, Harpreet Wasan, Marwan Fakih, Peter Gibbs, Alexander Knuth, Bruno Sangro, Michael C Soulen, Gianfranco Pittari, Ricky A Sharma
Selective internal radiation therapy (SIRT) with microspheres labelled with the β-emitter yttrium-90 (Y-90) enables targeted delivery of radiation to hepatic tumors. SIRT is primarily used to treat inoperable primary or metastatic liver tumors. Eligible patients have usually been exposed to a variety of systemic anticancer therapies, including cytotoxic agents, targeted biologics, immunotherapy and peptide receptor radionuclide therapy (PRRT). All these treatments have potential interactions with SIRT; however, robust evidence on the safety of these potential combinations is lacking...
December 2017: Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/29299366/bridging-therapy-effectiveness-in-the-treatment-of-hepatocellular-carcinoma-prior-to-orthotopic-liver-transplantation
#4
Maria M Rubinstein, Andreas Kaubisch, Milan Kinkhabwala, John Reinus, Qiang Liu, Jennifer W Chuy
Background: Orthotopic liver transplantation (OLT) is the most effective treatment for hepatocellular carcinoma (HCC) in patients with underlying cirrhosis and portal hypertension. Availability of OLT is limited by donor-organ shortages, which increase patient waiting time until OLT. A variety of bridging therapies (BT) have been used to halt tumor progression in patients on the OLT waiting list. Despite complete radiologic responses following BT, viable tumor is often present in explants...
December 2017: Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/29298552/e-beam-sterilizable-thermoplastics-elastomers-for-healthcare-devices-mechanical-morphology-and-in-vivo-studies
#5
Ananad Bellam Balaji, Chantara Thevy Ratnam, Mohammad Khalid, Rashmi Walvekar
The effect of electron beam radiation on ethylene-propylene diene terpolymer/polypropylene blends is studied as an attempt to develop radiation sterilizable polypropylene/ethylene-propylene diene terpolymer blends suitable for medical devices. The polypropylene/ethylene-propylene diene terpolymer blends with mixing ratios of 80/20, 50/50, 20/80 were prepared in an internal mixer at 165°C and a rotor speed of 50 rpm/min followed by compression molding. The blends and the individual components were radiated using 3...
January 1, 2018: Journal of Biomaterials Applications
https://www.readbyqxmd.com/read/29288864/assessment-of-subclinical-atherosclerosis-in-systemic-lupus-erythematosus-a-systematic-review-and-meta-analysis
#6
Pauline Henrot, Jennifer Foret, Thomas Barnetche, Estibaliz Lazaro, Pierre Duffau, Julien Seneschal, Thierry Schaeverbeke, Marie-Elise Truchetet, Christophe Richez
OBJECTIVES: To determine whether subclinical atherosclerosis is increased in patients with systemic lupus erythematosus (SLE) compared to healthy individuals, using carotid intima-media thickness (CIMT), carotid plaque (CP) presence or flow-mediated dilatation (FMD). METHODS: A systematic literature search was performed using MedLine, Embase and Cochrane databases. Two reviewers independently screened the articles to identify studies that compared the rates of atherosclerosis in SLE patients versus healthy controls...
December 27, 2017: Joint, Bone, Spine: Revue du Rhumatisme
https://www.readbyqxmd.com/read/29285636/the-effect-of-selective-internal-radiation-therapy-with-yttrium-90-resin-microspheres-on-lung-carbon-monoxide-diffusion-capacity
#7
Tunc Ones, Emel Eryuksel, Feyyaz Baltacioglu, Berrin Ceyhan, Tanju Yusuf Erdil
BACKGROUND: Selective internal radiation therapy (SIRT) with embolization of branches of the hepatic artery is a valuable therapeutic tool for patients with hepatic malignancies; however, it is also associated with lung injury risk due to shunting. Diffusion capacity of the lungs for carbon monoxide (DLCO) is a clinically significant lung function test, and worsening in DLCO is suggested to reflect a limited gas exchange reserve caused by the potential toxicity of chemoradiotherapy or it may be a marker of related lung injury...
December 29, 2017: EJNMMI Research
https://www.readbyqxmd.com/read/29276472/optimal-ki-prophylactic-dose-determination-for-thyroid-radiation-protection-after-a-single-administration-in-adult-rats
#8
Guillaume Phan, François Rebière, David Suhard, Alexandre Legrand, Floriane Carpentier, Thibaud Sontag, Maâmar Souidi, Jean-René Jourdain, Michelle Agarande, Valérie Renaud-Salis
A dose-response study was performed in adult rats to select an optimal stable potassium iodide (KI) dose which could be implemented in repeated prophylaxis, in case of prolonged exposure to radioactive iodine. Increasing doses of KI were given orally to rats 1 hour before internal exposure simulated by I-125 injection. I-125 incorporation in the thyroid was measured by γ-spectrometry, and KI protection effect was modeled by pharmacological functions. The measurement method by inductively coupled plasma mass spectrometry previously developed for the quantification of stable iodine in urine was adapted to correlate KI effect with its distribution in the thyroid...
October 2017: Dose-response: a Publication of International Hormesis Society
https://www.readbyqxmd.com/read/29248169/simultaneous-integrated-boost-for-radiation-dose-escalation-to-the-gross-tumor-volume-with-intensity-modulated-photon-radiation-therapy-or-intensity-modulated-proton-therapy-and-concurrent-chemotherapy-for-stage-ii-to-iii-non-small-cell-lung-cancer-a-phase
#9
Melenda D Jeter, Daniel Gomez, Quynh-Nhu Nguyen, Ritsuko Komaki, Xiaodong Zhang, Xiaorong Zhu, Michael O'Reilly, Frank V Fossella, Ting Xu, Xiong Wei, Hui Wang, Wenjuan Yang, Anne Tsao, Radhe Mohan, Zhongxing Liao
PURPOSE: To establish, in the phase 1 portion of a prospective phase 1/2 study, the maximum tolerated dose of image guided intensity modulated radiation therapy (IMRT) or proton therapy (IMPT), both with a simultaneous integrated boost (SIB), for patients with stage II to IIIB non-small cell lung cancer receiving concurrent chemoradiation therapy. METHODS AND MATERIALS: Patients had pathologically proven non-small cell lung cancer, either unresectable stage II to IIIB disease or recurrent disease after surgical resection, and could tolerate concurrent chemoradiation...
November 3, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/29237074/measurement-and-evaluation-of-electric-field-strength-levels-in-primary-and-secondary-schools-in-a-pilot-region
#10
Cetin Kurnaz, Begum Korunur Engiz, Murat Cem Bozkurt
In this study, in order to evaluate the exposed radiofrequency electromagnetic field (RF-EMF) levels, and to control their compliance with the limits determined by International Commission on Non-Ionizing Radiation Protection (ICNIRP), extensive short-term/band-selective and long-term RF-EMF measurements were conducted at 92 primary and secondary schools in the Ilkadım district of Samsun/Turkey. The measurements were performed once each in May, June, October and December in 2016, using the PMM-8053 EMF meter...
December 11, 2017: Radiation Protection Dosimetry
https://www.readbyqxmd.com/read/29233562/comparison-of-radiation-therapy-modalities-for-hepatocellular-carcinoma-with-portal-vein-thrombosis-a-meta-analysis-and-systematic-review
#11
Chai Hong Rim, Chul Yong Kim, Dae Sik Yang, Won Sup Yoon
PURPOSE: We performed a meta-analysis and systematic review to compare the radiotherapy (RT) modalities for hepatocellular carcinoma (HCC) with portal vein thrombosis (PVT). MATERIALS AND METHODS: We searched the PubMed, EMBASE, Medline, and Cochrane library databases. The primary endpoint was the 1-year overall survival (OS), and response rate (RR), local control (LC), 2-year OS, and grade ≥3 toxicity incidence were evaluated as secondary endpoints. RESULTS: Thirty-seven studies comprising 2513 patients were included...
December 9, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/29218270/anatomic-functional-and-molecular-imaging-in-lung-cancer-precision-radiation-therapy-treatment-response-assessment-and-radiation-therapy-personalization
#12
REVIEW
Michael MacManus, Sarah Everitt, Tanja Schimek-Jasch, X Allen Li, Ursula Nestle, Feng-Ming Spring Kong
This article reviews key imaging modalities for lung cancer patients treated with radiation therapy (RT) and considers their actual or potential contributions to critical decision-making. An international group of researchers with expertise in imaging in lung cancer patients treated with RT considered the relevant literature on modalities, including computed tomography (CT), magnetic resonance imaging (MRI) and positron emission tomography (PET). These perspectives were coordinated to summarize the current status of imaging in lung cancer and flag developments with future implications...
December 2017: Translational Lung Cancer Research
https://www.readbyqxmd.com/read/29204903/selection-of-reference-groups-in-the-life-span-study-of-atomic-bomb-survivors
#13
Benjamin French, John Cologne, Ritsu Sakata, Mai Utada, Dale L Preston
In cohort studies, unbiased estimation of exposure-outcome associations requires selection of an appropriate reference group of unexposed individuals. We illustrate strategies for analyzing cohort data with multiple potential reference groups. We analyzed the association between radiation exposure and incidence of first primary solid cancer among 105,444 participants of the Life Span Study (Hiroshima and Nagasaki, Japan, 1958-2009). Potential reference groups included zero-dose survivors at different ground distances from the hypocenter (internal) and city residents who were not in either city at the time of the bombings (external)...
December 4, 2017: European Journal of Epidemiology
https://www.readbyqxmd.com/read/29198316/exploring-innovative-radiation-shielding-approaches-in-space-a-material-and-design-study-for-a-wearable-radiation-protection-spacesuit
#14
M Vuolo, G Baiocco, S Barbieri, L Bocchini, M Giraudo, T Gheysens, C Lobascio, A Ottolenghi
We present a design study for a wearable radiation-shielding spacesuit, designed to protect astronauts' most radiosensitive organs. The suit could be used in an emergency, to perform necessary interventions outside a radiation shelter in the space habitat in case of a Solar Proton Event (SPE). A wearable shielding system of the kind we propose has the potential to prevent the onset of acute radiation effects in this scenario. In this work, selection of materials for the spacesuit elements is performed based on the results of dedicated GRAS/Geant4 1-dimensional Monte Carlo simulations, and after a trade-off analysis between shielding performance and availability of resources in the space habitat...
November 2017: Life Sciences in Space Research
https://www.readbyqxmd.com/read/29185067/phantom-validation-of-quantitative-y-90-pet-ct-based-dosimetry-in-liver-radioembolization
#15
Marco D'Arienzo, Maria Pimpinella, Marco Capogni, Vanessa De Coste, Luca Filippi, Emiliano Spezi, Nick Patterson, Francesca Mariotti, Paolo Ferrari, Paola Chiaramida, Michael Tapner, Alexander Fischer, Timo Paulus, Roberto Pani, Giuseppe Iaccarino, Marco D'Andrea, Lidia Strigari, Oreste Bagni
BACKGROUND: PET/CT has recently been shown to be a viable alternative to traditional post-infusion imaging methods providing good quality images of 90Y-laden microspheres after selective internal radiation therapy (SIRT). In the present paper, first we assessed the quantitative accuracy of 90Y-PET using an anthropomorphic phantom provided with lungs, liver, spine, and a cylindrical homemade lesion located into the hepatic compartment. Then, we explored the accuracy of different computational approaches on dose calculation, including (I) direct Monte Carlo radiation transport using Raydose, (II) Kernel convolution using Philips Stratos, (III) local deposition algorithm, (IV) Monte Carlo technique (MCNP) considering a uniform activity distribution, and (V) MIRD (Medical Internal Radiation Dose) analytical approach...
November 28, 2017: EJNMMI Research
https://www.readbyqxmd.com/read/29184683/selective-internal-radiation-therapy-using-yttrium-90-resin-microspheres-in-patients-with-unresectable-hepatocellular-carcinoma-a-retrospective-study
#16
Parvez S Mantry, Ashwini Mehta, Bahar Madani, Alejandro Mejia, Islam Shahin
Background: Selective internal radiation therapy (SIRT) with yttrium-90 resin (Y-90 resin) microspheres has been used as a locoregional therapy for patients with unresectable hepatocellular carcinoma (HCC). We examined patient and disease characteristics that might affect survival after Y-90 resin, as well as treatment tolerability. Methods: Data from patients with unresectable HCC treated with Y-90 resin at a single institution were reviewed retrospectively. Survival was assessed with Kaplan-Meier curves and log-rank tests...
October 2017: Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/29181682/effectiveness-of-hepatic-artery-infusion-hai-versus-selective-internal-radiation-therapy-y90-for-pretreated-isolated-unresectable-colorectal-liver-metastases-iu-crclm
#17
Mashaal Dhir, Mazen S Zenati, Heather L Jones, David L Bartlett, M Haroon A Choudry, James F Pingpank, Matthew P Holtzman, Nathan Bahary, Melissa E Hogg, Herbert J Zeh, David A Geller, J Wallis Marsh, Allan Tsung, Amer H Zureikat
BACKGROUND: In the era of modern effective systemic chemotherapy, the comparative effectiveness of hepatic artery infusion (HAI) versus selective internal radiation therapy (yttrium-90 [Y90]) for pretreated patients with isolated unresectable colorectal liver metastasis (IU-CRCLM) remains unknown. This study sought to compare the overall survival (OS) after HAI versus Y90 for IU-CRCLM patients treated with modern chemotherapy and to perform a cost analysis of both regional methods. METHODS: This study retrospectively reviewed patients receiving HAI or Y90 in combination with modern chemotherapy as second-line therapy for IU-CRCLM...
November 27, 2017: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/29174935/the-impact-of-adjuvant-vaginal-brachytherapy-in-women-with-stage-ii-uterine-endometrioid-carcinoma-results-of-a-national-cancer-database-analysis
#18
Joon K Lee, Ahmed I Ghanem, Ankit Modh, Charlotte Burmeister, Omar Mahmoud, G Larry Maxwell, Mohamed A Elshaikh
PURPOSE: To report survival outcomes in women with Stage II uterine endometrioid carcinoma who received adjuvant radiation therapy (RT) without chemotherapy using the National Cancer Database. METHODS AND MATERIALS: The National Cancer Database was queried for women with International Federation of Gynecology and Obstetrics Stage II uterine endometrioid carcinoma who underwent hysterectomy followed by adjuvant RT without chemotherapy. The χ2 tests were performed to compare differences in outcome by type of adjuvant RT (external beam radiation therapy [EBRT] alone, vaginal brachytherapy [VBT] alone, or combination of EBRT and VBT)...
November 23, 2017: Brachytherapy
https://www.readbyqxmd.com/read/29172243/characterization-of-90y-spect-ct-self-calibration-approaches-on-the-quantification-of-voxel-level-absorbed-doses-following-90y-microsphere-selective-internal-radiation-therapy
#19
Anjali Balagopal, Cheenu Kappadath
PURPOSE: 90Y-microsphere selective internal radiation therapy (90Y-SIRT or 90Y-radioembolization) is used in the management of unresectable liver tumors. 90Y-SIRT presents a unique situation where the total 90Y activity inside the liver can be determined with high accuracy (>95%). 90Y bremsstrahlung single-photon emission computed tomography (SPECT)/computed tomography (CT) can be self-calibrated to provide quantitative images that facilitate voxel-level absorbed dose calculations...
November 24, 2017: Medical Physics
https://www.readbyqxmd.com/read/29166330/hepatic-falciform-artery-demonstrating-maa-uptake-in-the-anterior-abdomen-prior-to-embolization
#20
Dhruv Patel, Ken Le, Joga Chaganti, Robert Mansberg
A 58-year-old man was referred for selective internal radiation therapy for locally advanced unresectable hepatocellular carcinoma. Intra-arterial particle perfusion scintigraphy was performed with SPECT/CT following intra-arterial injection of Tc macroaggregated albumin. Angiography demonstrated a hepatic falciform artery, a feeding artery of the ligamentum teres, whereas scintigraphy demonstrated tracer uptake in the mid-anterior abdominal wall. The hepatic falciform artery was subsequently embolized and the repeat angiogram confirmed successful occlusion...
November 22, 2017: Clinical Nuclear Medicine
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