WE-DE-209-03: Spirometric Motion Management System

2016 ◽  
Vol 43 (6Part40) ◽  
pp. 3816-3817
Author(s):  
S. Hadley
Keyword(s):  
Management System ◽  
Motion Management

Fiducial visibility on planar images during motion-synchronized tomotherapy treatments

2022 ◽  
Author(s):  
William Ferris ◽  
Larry Albert DeWerd ◽  
Wesley S Culberson
Keyword(s):  
Management System ◽  
Signal To Noise Ratio ◽  
Detection Algorithm ◽  
Position Error ◽  
Signal To Noise ◽  
Motion Management ◽  
Future Studies ◽  
Planar Images ◽  
Noise Ratio

Abstract Objective: Synchrony® is a motion management system on the Radixact® that uses planar kV radiographs to locate the target during treatment. The purpose of this work is to quantify the visibility of fiducials on these radiographs. Approach: A custom acrylic slab was machined to hold 8 gold fiducials of various lengths, diameters, and orientations with respect to imaging axis. The slab was placed on the couch at the imaging isocenter and planar radiographs were acquired perpendicular to the custom slab with varying thicknesses of acrylic on each side. Fiducial signal to noise ratio (SNR) and detected fiducial position error in millimeters were quantified. Main Results: The minimum output protocol (100 kVp, 0.8 mAs) was sufficient to detect all fiducials on both Radixact configurations when the thickness of the phantom was 20 cm. However, no fiducials for any protocol were detected when the phantom was 50 cm thick. The algorithm accurately detected fiducials on the image when the SNR was larger than 4. The MV beam was observed to cause RFI artifacts on the kV images and to decrease SNR by an average of 10%. Significance: This work provides the first data on fiducial visibility on kV radiographs from Radixact Synchrony treatments. The Synchrony fiducial detection algorithm was determined to be very accurate when sufficient SNR is achieved. However, a higher output protocol may need to be added for use with larger patients. This work provided groundwork for investigating visibility of fiducial-free solid targets in future studies and provided a direct comparison of fiducial visibility on the two Radixact configurations, which will allow for intercomparison of results between configurations.

scholarly journals A quality assurance tool for daily checks of the gamma knife high definition motion management system

2020 ◽  
Vol 21 (12) ◽  
pp. 240-245
Author(s):  
Robert Corns ◽  
Dhara Mehta ◽  
Whitney Massock ◽  
Leah Roberts
Keyword(s):  
Quality Assurance ◽  
Gamma Knife ◽  
Management System ◽  
High Definition ◽  
Motion Management

scholarly journals Characterization and validation of an intra‐fraction motion management system for masked‐based radiosurgery

2019 ◽  
Vol 20 (5) ◽  
pp. 21-26 ◽  
Author(s):  
Nels C. Knutson ◽  
Brad J. Hawkins ◽  
Douglas Bollinger ◽  
S. Murty Goddu ◽  
James A. Kavanaugh ◽  
...  
Keyword(s):  
Management System ◽  
Motion Management

A pressure based respiratory motion management system with biofeedback for MR-based radiotherapy

2019 ◽  
Vol 5 (3) ◽  
pp. 037003
Author(s):  
Benjamin Lewis ◽  
Robert Cadrain ◽  
Emma Fields ◽  
Siyong Kim ◽  
Taeho Kim
Keyword(s):  
Management System ◽  
Respiratory Motion ◽  
Motion Management

scholarly journals Technical Note: Characterization of clinical linear accelerator triggering latency for motion management system development

2018 ◽  
Vol 45 (11) ◽  
pp. 4816-4821 ◽  
Author(s):  
Andrew J. Shepard ◽  
Charles K. Matrosic ◽  
Jeffrey L. Radtke ◽  
Sydney A. Jupitz ◽  
Wesley S. Culberson ◽  
...  
Keyword(s):  
Linear Accelerator ◽  
Management System ◽  
System Development ◽  
Technical Note ◽  
Motion Management
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