Results 21 to 30 of about 4,361,784 (275)

Modeling human health behavior with a new index that measures connectivity

Preventive Medicine Reports, 2023
Objective: Health behavior is an important determinant of health. Adherence to medication and abstinence from harmful substances are two critical health behaviors. Although conceptually related, both are assessed using disparate measures.
Steven L. Bernstein, Fangyong Li, Fuad Abujarad, David R. Grant, Gail D'Onofrio, James Dziura   +5 more
doaj   +1 more source

Patient-Specific quality assurance protocol for volumetric modulated arc therapy using dose volume histogram

Journal of Medical Physics, 2018
A retrospective study was performed to explore the use of dose volume histogram (DVH) metrics in a patient-specific quality assurance protocol for volumetric modulated arc therapy (VMAT).
Christopher Low, Warren Toye, Peter Phung, Christopher Huston   +3 more
doaj   +1 more source

Study on the variation of the optical properties of PMMA polymer irradiated by gamma [PDF]

مجله علوم و فنون هسته‌ای, 2021
Poly (methyl methacrylate) (PMMA) is an inexpensive polymer widely used in different applications such as the fabrication of optical tools, sensors, and microfluidic medical devices. In the present study, the effect of emitted radiations from a Cobalt-60
M. Nodehi, A.M. Beigzadeh, M.R. Rashidian Vaziri, R. Karimi   +3 more
doaj   +1 more source

GAMMA-RAY LUMINOSITY AND PHOTON INDEX EVOLUTION OF FSRQ BLAZARS AND CONTRIBUTION TO THE GAMMA-RAY BACKGROUND [PDF]

The Astrophysical Journal, 2014
9 pages, 10 figures, Accepted to ...
Singal, J., Petrosian, V., Ko, Allan
openaire   +4 more sources

Certain Logarithmically N-Alternating Monotonic Functions Involving Gamma and q-Gamma Functions [PDF]

, 2005
In the paper, three basic properties of the logarithmically N-alternating monotonic functions are established and the monotonicity results of some functions involving the gamma and q-gamma functions, which are obtained in [W. E. Clark and M. E.
Qi, Feng
core   +6 more sources

Fatty liver index, gamma-glutamyltransferase, and early carotid plaques [PDF]

Hepatology, 2012
Abstract An association between fatty liver and carotid atherosclerosis has been established; however, it is not clear whether this relationship is a consequence of shared conventional risk factors or whether it is determined by specific circulating factors originating from liver or ...
Kozakova M, Palombo C, Eng MP, Dekker J, Flyvbjerg A, Mitrakou A, Gastaldelli A, Ferrannini E, Heine RJ, Dekker JM, de Rooij S, Nijpels G, Boorsma W, Mitrakou A, Tournis S, Kyriakopoulou K, Thomakos P, Lalic N, Lalic K, Jotic A, Lukic L, Civcic M, Nolan J, Yeow TP, Murphy M, DeLong C, Neary G, Colgan MP, Hatunic M, Konrad T, Böhles H, Fuellert S, Baer F, Zuchhold H, Golay A, Bobbioni Harsch E, Barthassat V, Makoundou V, Lehmann T, Merminod T, Petrie J, Perry C, Neary F, MacDougall C, Shields K, Malcolm L, Laakso M, Salmenniemi U, Aura A, Raisanen R, Ruotsalainen U, Sistonen T, Laitinen M, Saloranta H, Coppack SW, McIntosh N, Ross J, Pettersson L, Khadobaksh P, Laville M, Bonnet F, de la Perriere AB, Louche Pelissier C, Maitrepierre C, Peyrat J, Beltran S, Serusclat A, Gabriel R, Sánchez ME, Carraro R, Friera A, Novella B, Nilsson P, Persson M, Östling G, Melander O, Burri P, Piatti PM, Monti LD, Setola E, Galluccio E, Minicucci F, Colleluori A, Walker M, Ibrahim IM, Jayapaul M, Carman D, Ryan C, Short K, McGrady Y, Richardson D, Staehr P, Hojlund K, Vestergaard V, Olsen C, Hansen L, Bolli GB, PORCELLATI, Francesca, FANELLI, Carmine Giuseppe, LUCIDI, Paola, Calcinaro F, Saturni A, Ferrannini E, Natali A, Muscelli E, Pinnola S, Kozakova M, Mingrone G, Guidone C, Favuzzi A, Di Rocco P, Anderwald C, Bischof M, Promintzer M, Krebs M, Mandl M, Hofer A, Luger A, Waldhäusl W, Roden M, Balkau B, Coppack SW, Dekker JM, Ferrannini E, Mari A, Natali A, Walker M, Gaffney P, Nolan J, Boran G, Olsen C, Hansen L, Beck Nielsen H, Kok A, Dekker JM, Patel S, Walker M, Gastaldelli A, Ciociaro D, Kozakova M, Guillanneuf MT, Balkau B, Mari A, Mota L, Mari A, Pacini G, Cavaggion C, Hills SA, Landucci L, Mota L.   +149 more
openaire   +6 more sources

Monte Carlo simulation of a 6 MV Varian Trilogy clinical linear accelerator using Geant4 for small-field dosimetry analysis

Brazilian Journal of Radiation Sciences
In recent decades, radiotherapy has advanced significantly due to the emergence of advanced clinical linear accelerators, enabling safer and faster treatments with reduced side effects.
Andre Luiz de Carvalho Ribeiro, Alex Cristóvão Holanda de Oliveira, Leonardo Peres da Silva, Eduardo De Paiva   +3 more
doaj   +1 more source

Study of Target Volume Effect on Efficiency Index and Paddick Conformity Index  for Arteriovenous Malformation Treatment Plans by Gamma Knifey Gamma Knife

Journal of the Faculty of Medicine Baghdad, 2023
نظرًا لأن الطاقة هي نتاج الحجم مضروبًا في الجرعة ، يتم إعطاء الأحجام ترجيحًا يتناسب مع الجرعة التي تلقتها. حيث أن الطاقة هي مقياس لمقدار المادة التي تم امتصاصها. مؤشر الكفاءة عبارة عن إحصائية واحدة يمكن استخدامها لتقييم جودة الخطة بكفاءة من خلال مراعاة التغطية والانتقائية ومؤشر التدرج والهدف ، ومن الممكن استخدام هذه الإحصائية لقياس كفاءة الخطة.
Arkan M. Mhal, Nadiya Y. Mohammed, Moneer K. Faraj   +2 more
openaire   +1 more source

Assessment of Dose Calculation Accuracy of TiGRT Treatment Planning System Versus BEAMnrc Simulation in Nasopharyngeal Carcinoma: A Phantom study

Journal of Medical Signals and Sensors
Background: Accurate dose calculations in radiotherapy are essential, especially in complex anatomical areas such as the nasopharynx, where heterogeneous tissue compositions can greatly influence treatment outcomes.
Seyed Salman Zakariaee, Fereshteh Koosha, Mostafa Robatjazi, Hamed Rezaeejam, Mikaeil Molazadeh   +4 more
doaj   +1 more source

A comparison of the quality assurance of four dosimetric tools for intensity modulated radiation therapy

Radiology and Oncology, 2015
Background. This study was designed to compare the quality assurance (QA) results of four dosimetric tools used for intensity modulated radiation therapy (IMRT) and to suggest universal criteria for the passing rate in QA, irrespective of the dosimetric ...
Son Jaeman, Baek Taesung, Lee Boram, Shin Dongho, Park Sung Yong, Park Jeonghoon, Lim Young Kyung, Lee Se Byeong, Kim Jooyoung, Yoon Myonggeun   +9 more
doaj   +1 more source