Results 141 to 150 of about 13,480,944 (399)
Routine machine quality assurance tests for a self‐shielded gyroscopic radiosurgery system
Journal of Applied Clinical Medical Physics, EarlyView.Abstract Purpose This report describes routine machine quality assurance (QA) (daily, monthly, and annual QA) tests for the Zap‐X® Gyroscopic Radiosurgery® platform. Methods Following the recommendations of the American Association of Physicists in Medicine Task Group (AAPM TG)‐142 and Medical Physics Practice guideline (MPPG) 8.b, routine machine QA ...
Yongsook C. Lee +6 more
wiley +1 more source
The anterior nucleus of the thalamus plays a role in the epileptic network
Annals of Clinical and Translational Neurology, Volume 9, Issue 12, Page 2010-2024, December 2022., 2022 Abstract Objectives We investigated both the metabolic differences and interictal/ictal discharges of the anterior nucleus of the thalamus (ANT) in patients with epilepsy to clarify the relationship between the ANT and the epileptic network. Methods Nineteen patients with drug‐resistant epilepsy who underwent stereoelectroencephalography were studied ...
Hao Yan +9 more
wiley +1 more source
Estimating Sensor Motion from Wide-Field Optical Flow on a Log-Dipolar Sensor [PDF]
, 2004 Log-polar image architectures, motivated by the structure of the human visual field, have long been investigated in computer vision for use in estimating motion parameters from an optical flow vector field. Practical problems with this approach have been:
Polimeni, Jonathan +2 more
core +1 more source
Five‐year evaluation of linear accelerator‐based SRS platform isocentricity
Journal of Applied Clinical Medical Physics, EarlyView.Abstract Linear accelerator (LINAC)‐based stereotactic radiosurgery (SRS) has become a mainstay in the management of intracranial tumors. However, the high fractional doses and sharp gradients used in SRS place heavy demands on geometric accuracy.
Yohan A. Walter +3 more
wiley +1 more source
Rates of visual field progression in clinical glaucoma care
Acta ophthalmologica, 2012 Purpose: To investigate rates of visual field progression and factors associated with progression rate in open‐angle glaucoma in clinical glaucoma care.
A. Heijl +3 more
semanticscholar +1 more source
Journal of Applied Clinical Medical Physics, EarlyView.Abstract Purpose The goal of this study was to assess the feasibility of a cost‐effective prototype of a laser‐based respiratory motion detection system utilizing a Leuze LDS for breath monitoring through calibration and volunteer tests. Methods This study was performed using the Anzai AZ‐773 V and computerized imaging reference systems (CIRS) motion ...
Isnaini Nur Islami +6 more
wiley +1 more source
Interventions for Visual Field Defects in Patients With Stroke
Stroke, 2012 An estimated 20% to 57% of people have visual field defects after stroke, affecting function, quality of life, ability to participate in rehabilitation, depression, anxiety, and social isolation.
A. Pollock +10 more
semanticscholar +1 more source
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 +2 more
wiley +1 more source
Flight tests of vortex-attenuating splines [PDF]
, 1974 Visual data on formation and motion of lift-induced wingtip vortex were obtained by stationary, airflow visualization method. Visual data indicated that vortex cannot be eliminated by merely reshaping wingtip.
Patterson, J. C., Jr.
core +1 more source
Neurorehabilitation and Neural Repair, 2012 Background. Vision Restoration Therapy (VRT) aims to improve visual field function by systematically training regions of residual vision associated with the activity of suboptimal firing neurons within the occipital cortex.
E. Plow +4 more
semanticscholar +1 more source