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Effect of Ultrasound Probe on Dose Delivery During Real-time Ultrasound-Guided Tumor Tracking

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6 Author(s)
Jianzhou Wu ; Departments of Radiation Oncology and Diagnostic Radiology, University of Maryland School of Medicine, Baltimore, MD 21201 USA. e-mail: ; Omkar Dandekar ; Daryl Nazareth ; Peng Lei
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Ultrasound is a noninvasive and less costly modality for real-time imaging of soft tissues. It has the capability of tracking soft tissue at levels of submillimeter precision even in the presence of radiation beams. The effect of a transducer on radiation dose is not fully known. The best imaging location for an ultrasound transducer happens to coincide with the path of an anterior-posterior beam in intensity modulated radiation therapy (IMRT). This study indicates a significant change in dose when this juxtaposition occurs. If the anterior-posterior beam is avoided in IMRT planning, however, the effect of the transducer on radiotherapy is found to be negligible

Published in:

Engineering in Medicine and Biology Society, 2006. EMBS '06. 28th Annual International Conference of the IEEE

Date of Conference:

Aug. 30 2006-Sept. 3 2006