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Titolo:
A computerized remote table control for fast on-line patient repositioning: Implementation and clinical feasibility
Autore:
Bel, A; Petrascu, O; Van de Vondel, I; Coppens, L; Linthout, N; Verellen, D; Storme, G;
Indirizzi:
Free Univ Brussels, Akad Ziekenhuis, Dept Radiotherapy, B-1090 Brussels, Belgium Free Univ Brussels Brussels Belgium B-1090 apy, B-1090 Brussels, Belgium
Titolo Testata:
MEDICAL PHYSICS
fascicolo: 2, volume: 27, anno: 2000,
pagine: 354 - 358
SICI:
0094-2405(200002)27:2<354:ACRTCF>2.0.ZU;2-Q
Fonte:
ISI
Lingua:
ENG
Soggetto:
CONFORMAL RADIATION-THERAPY; PORTAL IMAGES; 3-DIMENSIONAL INSPECTION; VERIFICATION PROCEDURE; TOMOGRAPHY DATA; NECK REGION; SETUP; PROSTATE; IRRADIATION; RADIOTHERAPY;
Keywords:
computer; remote couch control; portal imaging; on-line setup corrections;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Life Sciences
Citazioni:
20
Recensione:
Indirizzi per estratti:
Indirizzo: Bel, A Free Univ Brussels, Akad Ziekenhuis, Dept Radiotherapy, Laarbeeklaan 101, B-1090 Brussels, Belgium Free Univ Brussels Laarbeeklaan 101 Brussels Belgium B-1090 elgium
Citazione:
A. Bel et al., "A computerized remote table control for fast on-line patient repositioning: Implementation and clinical feasibility", MED PHYS, 27(2), 2000, pp. 354-358

Abstract

A computerized remote control for a Siemens ZXT treatment couch was implemented and its characteristics were investigated to establish its feasibility for on-line setup corrections, using portal imagine. Communication with the table was obtained by connecting it via a serial line to a work station. The treatment couch enables "goto" commands in the three main directions and around the isocenter. The accuracy of the movements after giving such a command was checked and the time for each movement was recorded. First, themovements into a single direction were studied (range of -4 to +4 cm and -4 degrees to +-4 degrees). Each command was repeated four times. Second, the table was moved into the three main directions simultaneously. For this experiment a clinically relevant three-dimensional (3-D) normal distributionof shifts was used [N=200, standard deviation (SD) 5 mm in the three main directions]. This latter experiment was done twice: without and with rotations (a distribution with SD 1 degrees). During the first experiment, with shifts into one direction, no systematic deviations were found. The overall accuracy of the shifts was 0.6 mm (1 SD) in each direction and 0.04 degrees(1 SD) for the rotations. The time required for a translation ranged between 4 and 13 s and for the rotation between 8 and 20 s. The second experiment with the 3-D distribution of setup errors yielded an error in the 3-D vector length equal to 0.96 mm (1 SD), independent of rotations. Shifts were performed in less than 11 s for 95% of the cases without rotations. When rotations were also performed, 95% of the movements finished in less than 16 s. In conclusion, the table movements are accurate and enable on-line setup corrections in daily clinical practice. (C) 2000 American Association of Physicists in Medicine. [S0094-2405 (00)00502-2].

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/07/20 alle ore 20:28:15