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

Technical Note: Dosimetric characterization of the dynamic beam flattening MLC sequence on a ring shaped, Jawless Linear Accelerator with double stacked MLC

2020 ◽  
Vol 47 (3) ◽  
pp. 948-957 ◽  
Author(s):  
Douglas Bollinger ◽  
Eric Laugeman ◽  
Taoran Li ◽  
Jessica Hilliard ◽  
Ana Heermann ◽  
...  
Keyword(s):  
Linear Accelerator ◽  
Technical Note

DESIGN FEATURES OF THE AUTOMATIZED MANAGEMENT SYSTEM DEVELOPMENT FOR A TOURIST AND RECREATIONAL COMPLEX

2020 ◽  
Vol 2020 (4) ◽  
pp. 40-52
Author(s):  
Aleksey Beleychenko ◽  
Vladimir Averchenkov
Keyword(s):  
Management System ◽  
System Development ◽  
Tourism Industry ◽  
Automated System ◽  
Automated Control ◽  
Research Areas ◽  
Automated Control System ◽  
Tourism Sector ◽  
District Management ◽  
Characteristic Features

This research examined the problems of the tourism sector of the economy, that was described from the perspective of potential informatization. The features of the tourism industry functioning were reflected, some proposals were put forward regarding the design and development of an automated management system, and the geographical affiliation of the research areas were indicated. The tourist and recreational complex was proposed to understand as a separate component of the tourism industry, and was accordingly accepted as the object for the projected automated system. The authors had refined the formulation of the term "tourist and recreational complex" as a complex socio-economic system based on the problems and possibilities of it’s informatization. Sufficient attention was paid to the identification of the characteristic features of the tourist and recreational complex, to the designation and addition of its functions, to the possibilities and difficulties of formalization. Some features and problems of the designing an automated control system were described in this research, there were also suggests about its conceptual structure, and outlines the for further research. Special attention was paid to the developing of the automated system for managing the tourist and recreational complex, based on the requests, needs and capabilities of its three main groups of users: regional (district) management, business and guests (tourists, recreants).

scholarly journals Technical Note: Characterization of the new microSilicon diode detector

2019 ◽  
Vol 46 (9) ◽  
pp. 4257-4262 ◽  
Author(s):  
Ann‐Britt Schönfeld ◽  
Daniela Poppinga ◽  
Rafael Kranzer ◽  
Rudy Leon De Wilde ◽  
Kay Willborn ◽  
...  
Keyword(s):  
Technical Note ◽  
Diode Detector

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.

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