Results 171 to 180 of about 1,590,381 (357)

Optimization of target grouping in distributive stereotactic radiosurgery using the excel evolutionary solver

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Purpose Distributive stereotactic radiosurgery (dSRS) is a form of fractionation where groups of metastases are treated with a full single‐fraction dose on different days. The challenge with dSRS is determining optimal target groupings to maximize the distance between targets treated in the same fraction.
Chester Ramsey, Samuel Gallemore, Joseph Bowling   +2 more
wiley   +1 more source

Algorithm 744: a stochastic algorithm for global optimization with constraints [PDF]

, 1995
F. Michael Rabinowitz
openalex   +1 more source

Investigation of factors related to treatment planning of x‐ray SBRT and scanning carbon‐ion radiation therapy for early‐stage lung cancer patients

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract This study aimed to compare the treatment plans of x‐ray SBRT and scanning carbon ion radiation therapy (CIRT) for localized lung tumors, and to evaluate the dose dependence of tumor size tumor‐to‐heart distance. For phantom verification, we used a chest phantom with a spherical simulated tumor.
Yuya Miyasaka, Sung Hyun Lee, Hikaru Souda, Hongbo Chai, Miyu Ishizawa, Takuya Ono, Takashi Ono, Hiraku Sato, Takeo Iwai   +8 more
wiley   +1 more source

Improving VMAT dose calculation accuracy and planning quality via a GPU‐accelerated Fourier transform dose calculation algorithm

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Background Inverse planning typically utilizes fast, less accurate dose calculation algorithms during the iterative optimization process, thus leading to dose calculation errors (DCEs) and suboptimal plans that often require dose normalization and/or plan re‐optimization.
Kenny Guida, Chaoqiong Ma, Joy Patel, Krishna Reddy, H. Harold Li   +4 more
wiley   +1 more source

Commissioning of a motion management system for a 1.5T Elekta Unity MR‐Linac: A single institution experience

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Purpose This work describes a single institution experience of commissioning a real‐time target tracking and beam control system, known as comprehensive motion management, for a 1.5 T Elekta MR‐Linac. Methods Anatomical tracking and radiation beam control were tested using the MRI4D Quasar motion phantom.
Blake R Smith, Joel St‐Aubin, Daniel E. Hyer   +2 more
wiley   +1 more source

Global Regularity Estimates for Optimal Transport via Entropic Regularisation [PDF]

arXiv
We develop a general approach to prove global regularity estimates for quadratic optimal transport using the entropic regularisation of the problem.
arxiv  

Assessing proton plans with three different beam delivery systems versus photon plans for head and neck tumors

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Purpose To compare plan quality among photon volumetric modulated arc therapy (VMAT) and intensity‐modulated proton therapy (IMPT) with robustness using three different proton beam delivery systems with various spot size (σ) ranges: cyclotron‐generated proton beams (CPBs) (σ: 2.7–7.0 mm), linear accelerator proton beams (LPBs) (σ: 2.9–5.5 mm),
Tara Gray, Chieh‐Wen Liu, Saeed Ahmed, Anna Maria Kolano, Jeremy Donaghue, Shlomo Koyfman, Neil Woody, Shauna R. Campbell, Jonathan B. Farr, Ping Xia   +9 more
wiley   +1 more source

Globally optimized fourier finite‐difference migration method [PDF]

, 2000
Lianjie Huang, Michael C. Fehler
openalex   +3 more sources

Optimization of Globally Convex Functions

, 1989
T. C. Hu, Victor Klee, David Larman
openalex   +2 more sources

The effect of multi‐leaf collimator leaf width on VMAT treatment plan quality

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Background The advent of volumetric modulated arc therapy (VMAT) in radiotherapy has made it one of the most commonly used techniques in clinical practice. VMAT is the delivery of intensity modulated radiation therapy (IMRT) while the gantry is in motion, and existing literature has shown it has decreased treatment delivery times and the ...
Gregory Sadharanu Peiris, Brendan Whelan, Nicholas Hardcastle, Suzie Lynn Sheehy   +3 more
wiley   +1 more source