Results 101 to 110 of about 25,468 (231)

"Epid." II, IV y VI: composición de sus historias clínicas [PDF]

, 2012
Este trabajo consiste en un análisis de las historias clínicas de Epidemias II, IV y VI, especialmente en lo que respecta a su estructura, basada en una serie de datos fijos referentes al paciente, su identidad y su entorno, así como los concernientes a ...
Esteban Santos, Alicia
core   +1 more source

Investigation of the mechanical performance of Siemens linacs components during arc: gantry, MLC, and electronic portal imaging device

Medical Devices: Evidence and Research, 2015
Pejman Rowshanfarzad,1 Peter Häring,2 Hans L Riis,3 Sune J Zimmermann,3 Martin A Ebert1,4 1School of Physics, The University of Western Australia, Crawley, WA, Australia; 2German Cancer Research Center (DKFZ), Medical Physics in Radiation Oncology ...
Rowshanfarzad P, Häring P, Riis HL, Zimmermann SJ, Ebert MA   +4 more
doaj  

Usage of PCI and long-term cardiovascular risk in post-myocardial infarction patients: a nationwide registry cohort study from Finland

BMC Cardiovascular Disorders, 2019
Background Despite currently available treatments, the burden of myocardial infarction (MI) morbidity and mortality remains prominent. The aim of this was to investigate the risk of developing subsequent cardiovascular events in MI patients. Methods This
Ville Kytö, Tuire Prami, Houssem Khanfir, Pål Hasvold, Eeva Reissell, Juhani Airaksinen   +5 more
doaj   +1 more source

Machine learning for automated quality assurance in radiotherapy: A proof of principle using EPID data description

Medical Physics (Lancaster), 2019
PURPOSE Developing automated methods to identify task-driven quality assurance (QA) procedures is key toward increasing safety, efficacy, and efficiency.
I. E. El Naqa, J. Irrer, T. Ritter, J. DeMarco, H. Al-Hallaq, J. Booth, G. Kim, Ahmad Alkhatib, R. Popple, Mario Perez, K. Farrey, J. Moran   +11 more
semanticscholar   +1 more source

Simple electronic portal imager-based pretreatment quality assurance using Acuros XB: A feasibility study

Journal of Medical Physics, 2019
Objective: This study demonstrates a novel electronic portal imaging device (EPID)-based forward dosimetry approach for pretreatment quality assurance aided by a treatment planning system (TPS).
Arjunan Manikandan, Sureka Chandra Sekaran, Biplab Sarkar, Sujatha Manikandan   +3 more
doaj   +1 more source

Semiparametric theory and empirical processes in causal inference

, 2016
In this paper we review important aspects of semiparametric theory and empirical processes that arise in causal inference problems. We begin with a brief introduction to the general problem of causal inference, and go on to discuss estimation and ...
A. Belloni, A. Belloni, A.A. Tsiatis, A.R. Luedtke, A.W. Vaart van der, A.W. Vaart van der, A.W. Vaart van der, A.W. Vaart van der, B. Chakraborty, C.F. Manski, D. Pollard, D. Pollard, D.B. Rubin, D.B. Rubin, D.W.K. Andrews, D.W.K. Andrews, E. Tchetgen, E. Tchetgen, E. Tchetgen, E.H. Kennedy, E.L. Ogburn, G.R. Shorack, I. Diaz, I. Diaz, J. Hahn, J. Pearl, J. Pearl, J. Pfanzagl, J. Pfanzagl, J.D. Angrist, J.L. Horowitz, J.M. Begun, J.M. Robins, J.M. Robins, J.M. Robins, J.M. Robins, J.M. Robins, J.M. Robins, L.A. Stefanski, M. Carone, M.A. Hernan, M.G. Hudgens, M.J. Laan van der, M.J. Laan van der, M.J. Laan van der, M.J. Laan van der, M.J. Laan van der, M.J. Laan van der, M.J. Laan van der, M.J. Laan van der, M.L. Petersen, M.R. Kosorok, P.A. Dawid, P.J. Bickel, R. Neugebauer, R.D. Gill, S. Rose, S.A. Murphy, T.J. VanderWeele, T.J. VanderWeele, T.J. VanderWeele, T.J. VanderWeele, W. Zheng, W.K. Newey, W.K. Newey   +64 more
core   +1 more source

Analyses of integrated EPID images for on‐treatment quality assurance to account for interfractional variations in volumetric modulated arc therapy

Journal of Applied Clinical Medical Physics, 2020
Purpose To investigate the effects of interfractional variation, such as anatomical changes and setup errors, on dose delivery during treatment for prostate cancer (PC) and head and neck cancer (HNC) by courses of volumetric modulated arc therapy (VMAT ...
N. Matsushita, M. Nakamura, M. Sasaki, S. Yano, M. Yoshimura, T. Mizowaki   +5 more
semanticscholar   +1 more source

Conservative management of low back pain [PDF]

, 2001
Back pain is prevalent worldwide, but back pain disability has reached epidemic proportions in many industrialised societies. Few patients have serious medical pathology or direct neurological involvement requiring surgery.
De Souza, LH, Frank, AO
core  

EPID‐based in vivo dosimetry using Dosimetry Check™: Overview and clinical experience in a 5‐yr study including breast, lung, prostate, and head and neck cancer patients

Journal of Applied Clinical Medical Physics, 2018
Background Independent verification of the dose delivered by complex radiotherapy can be performed by electronic portal imaging device (EPID) dosimetry.
W. Nailon, D. Welsh, K. McDonald, D. Burns, J. Forsyth, G. Cooke, F. Cutanda, L. Carruthers, D. McLaren, Josep Puxeu Vaqué, T. Kehoe, S. Andiappa   +11 more
semanticscholar   +1 more source

A collapsed-cone based transit EPID dosimetry method

Physica Medica, 2018
To develop a transit-dose portal dosimetry method based on a commercial collapsed-cone algorithm.A Varian Clinac21EX (Varian Medical Systems, USA), equipped with an amorphous-silicon EPID aS1000, was used. Dose calculations were performed with the collapsed-cone algorithm of Pinnacle3 v8.0 m (Philips Medical Systems, USA).
Martínez Ortega, Jaime, Pinto Monedero, Maria, Gómez Gónzalez, Nuria, Tolani, Naresh B., Castro Tejero, Pablo, Castanedo Álvarez, Miguel, Núñez Martín, Luis, Sánchez Montero, Rocío   +7 more
openaire   +2 more sources