Results 31 to 40 of about 7,895,299 (362)

A small footprint couch‐top support device for image‐guided radiotherapy of heavy patients

Journal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022
Abstract Purpose Patients with body weights close to or above 400 lbs present unique challenges in radiation therapy since the weight limit of most treatment couches decreases as the couch‐top extends toward the treatment gantry. The purpose of this work was to develop a small footprint couch‐top support platform to safely perform image‐guided ...
Huixiao Chen, Kevin Morley, Ronnie Rodriguez, Emily Draeger, Muhammad Shafiq ul Hassan, Zhe (Jay) Chen   +5 more
wiley   +1 more source

Bioelectrical Impedance Analysis Derived-Phase Angle as a Pragmatic Tool to Detect Protein Energy Wasting among Multi-Ethnic Hemodialysis Patients

Diagnostics, 2021
Protein-energy wasting (PEW) is a devastating metabolic derangement that leads to increased morbidity and mortality in hemodialysis (HD) patients. This study aimed to determine the diagnostic test accuracy of bioelectrical impedance analysis derived ...
Cordelia-Kheng-May Lim, Jun-Hao Lim, Imliya Ibrahim, Yoke-Mun Chan, Nor Fadhlina Zakaria, Rosnawati Yahya, Zulfitri Azuan Mat Daud   +6 more
doaj   +1 more source

Image quality comparisons of coil setups in 3T MRI for brain and head and neck radiotherapy simulations

Journal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022
Abstract Purpose MRI is increasingly used for brain and head and neck radiotherapy treatment planning due to its superior soft tissue contrast. Flexible array coils can be arranged to encompass treatment immobilization devices, which do not fit in diagnostic head/neck coils. Selecting a flexible coil arrangement to replace a diagnostic coil should rely
Evangelia Kaza, Jeffrey P. Guenette, Christian V. Guthier, Steven Hatch, Alexander Marques, Lisa Singer, Jonathan D. Schoenfeld   +6 more
wiley   +1 more source

Volume staging for arteriovenous malformation SRS treatment using VMAT

Journal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022
Abstract Volume staging involves dividing the target volume into smaller parts and treating each part separately. In this study, the feasibility of volume‐staged stereotactic radiosurgery (VS‐SRS) on a linear accelerator using volumetric modulated arc therapy (VMAT) and a frameless patient positioning system is investigated.
Claudia Mendez, Ermias Gete
wiley   +1 more source

Phase Angle as an Indicator of Sarcopenia, Malnutrition, and Cachexia in Inpatients with Cardiovascular Diseases

Journal of Clinical Medicine, 2020
Malnutrition is associated with sarcopenia, cachexia, and prognosis. We investigated the usefulness of phase angle (PhA) as a marker of sarcopenia, cachexia, and malnutrition in 412 hospitalized patients with cardiovascular disease.
Suguru Hirose, T. Nakajima, Naohiro Nozawa, S. Katayanagi, Hayato Ishizaka, Yuta Mizushima, Kazuhisa Matsumoto, Kaori Nishikawa, Yohei Toyama, Reiko Takahashi, T. Arakawa, T. Yasuda, Akiko Haruyama, Hiroko Yazawa, Suomi Yamaguchi, Shigeru Toyoda, I. Shibasaki, T. Mizushima, H. Fukuda, Teruo Inoue   +19 more
semanticscholar   +1 more source

In-Season Longitudinal Hydration/Body Cell Mass Ratio Changes in Elite Rugby Players

Sports, 2023
Background: Hydration status has a direct role in sports performance. Bioelectrical Impedance Vector Analysis (BIVA) and Urine Specific Gravity (USG) are commonly used to assess hydration.
Álex Cebrián-Ponce, Cristian Petri, Pascal Izzicupo, Matteo Levi Micheli, Cristina Cortis, Andrea Fusco, Marta Carrasco-Marginet, Gabriele Mascherini   +7 more
doaj   +1 more source

Validation of pencil beam scanning proton therapy with multi‐leaf collimator calculated by a commercial Monte Carlo dose engine

Journal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022
Abstract This study aimed to evaluate the clinical beam commissioning results and lateral penumbra characteristics of our new pencil beam scanning (PBS) proton therapy using a multi‐leaf collimator (MLC) calculated by use of a commercial Monte Carlo dose engine.
Yuki Tominaga, Yusuke Sakurai, Junya Miyata, Shuichi Harada, Takashi Akagi, Masataka Oita   +5 more
wiley   +1 more source

The reason for the difference data of photometric observations Galilean satellites from Earth and from space

Вісник Астрономічної школи, 2012
The four Galilean satellites of Jupiter have been studied with cosmic devices and from the Earth by astronomical means. Observations on board the spacecraft are usually obtained at large phase angles of the Sun.
A. I. Klianchin, V. V. Prokof'eva-Mikchailovskaya   +1 more
doaj   +1 more source

Effect of different noise reduction techniques and template matching parameters on markerless tumor tracking using dual‐energy imaging

Journal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022
Abstract Purpose To evaluate the impact of various noise reduction algorithms and template matching parameters on the accuracy of markerless tumor tracking (MTT) using dual‐energy (DE) imaging. Methods A Varian TrueBeam linear accelerator was used to acquire a series of alternating 60 and 120 kVp images (over a 180° arc) using fast kV switching, on ...
Mandeep Kaur, Peter Wagstaff, Hassan Mostafavi, Mathias Lehmann, Daniel Morf, Liangjia Zhu, Hyejoo Kang, Michal Walczak, Matthew M. Harkenrider, John C. Roeske   +9 more
wiley   +1 more source

Direct Phase-Angle Detection for Three-Phase Inverters in Asymmetrical Power Grids

IEEE Journal of Emerging and Selected Topics in Power Electronics, 2020
This article introduces a signal reformation-based direct phase-angle detection (DPD-SR) technique for three-phase inverters supporting asymmetrical grids.
Fahmid Sadeque, Joseph Benzaquen, Aswad Adib, B. Mirafzal   +3 more
semanticscholar   +1 more source