Open AccessEvaluation of mechanical accuracy for couch‐based tracking system (CBTS)
Author(s) -
Lee Suk,
Chang KyungHwan,
Shim Jand Bo,
Cao Yuanjie,
Lee Chang Ki,
Cho Sam Ju,
Yang Dae Sik,
Park Young Je,
Yoon Won Seob,
Kim Chul Yong
Publication year - 2012
Publication title -
journal of applied clinical medical physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.83
H-Index - 48
ISSN - 1526-9914
DOI - 10.1120/jacmp.v13i6.3818
Subject(s) - reproducibility , tracking (education) , root mean square , waveform , computer science , biomedical engineering , mathematics , medicine , physics , statistics , telecommunications , psychology , pedagogy , radar , quantum mechanics
This study evaluated the mechanical accuracy of an in‐house–developed couch‐based tracking system (CBTS) according to respiration data. The overall delay time of the CBTS was calculated, and the accuracy, reproducibility, and loading effect of the CBTS were evaluated according to the sinusoidal waveform and various respiratory motion data of real patients with and without a volunteer weighing 75 kg. The root mean square (rms) error of the accuracy, the reproducibility, and the sagging measurements were calculated for the three axes (X, Y, and Z directions) of the CBTS. The overall delay time of the CBTS was 0.251 sec. The accuracy and reproducibility in the Z direction in real patient data were poor, as indicated by high rms errors. The results of the loading effect were within 1.0 mm in all directions. This novel CBTS has the potential for clinical application for tumor tracking in radiation therapy. PACS number: 87.55.ne