A dwell position verification method for high dose rate brachytherapy.
Misplacement of dwell positions is a potential source of misadministration in high dose rate brachytherapy. In this work we present a dwell position verification method using fluoroscopic images. A mobile C-arm fluoroscopic machine is used to take a snapshot of the treatment machine's check cable as it reaches the most distal dwell position. This fluoroscopic image is displayed side-by-side with a treatment planning image on a dual monitor relay station at the HDR treatment console. Any discrepancy between the check cable's position on the verification image and the intended dwell position on the planning image can be identified immediately, thus avoiding the possibility of treating the wrong target volume.
Liu
Lizhong
L
Department of Radiation Oncology, SUNY Upstate Medical University, 750 East Adams Street, Syracuse, New York 13210, USA. liul@upstate.edu
Prasad
Satish C
SC
Bassano
Daniel A
DA
Heavern
Joel
J
Keshler
Bonnie
B
Hahn
Seung S
SS
D001918:Brachytherapy / Q000295:instrumentation* / Q000379:methods*; D006801:Humans; D011785:Quality Assurance, Health Care / Q000379:methods; D011856:Radiographic Image Enhancement / Q000295:instrumentation* / Q000379:methods*; D011880:Radiotherapy Planning, Computer-Assisted / Q000295:instrumentation / Q000379:methods*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D014057:Tomography, X-Ray Computed / Q000295:instrumentation* / Q000379:methods*