X-ray Acoustic Imaging with a Focused Ultrasound Transducer and a Medical Linear Accelerator
SCOPUS
- Title
- X-ray Acoustic Imaging with a Focused Ultrasound Transducer and a Medical Linear Accelerator
- Authors
- KIM, JEESU; PARK, EUN-YEONG; JUNG, YUHAN; KIM, BYOUNG CHUL; KIM, JOONG HYUN; YI, CHUL-YOUNG; KIM, CHULHONG
- Date Issued
- 2017-09
- Publisher
- IEEE Engineering in Medicine and Biology Society
- Abstract
- High-energy ionizing radiation therapy is a highly effective method for destroying cancer cells. Monitoring the dose distribution during radiation therapy is extremely important to deliver an optimal X-ray dose to diseased areas and minimize radiation exposure to adjacent healthy tissues. Here, we present an X-ray acoustic (XA) dosimetry system that successfully combines a spherically focused ultrasound (US) transducer with a medical linear accelerator. The system can be potentially utilized in clinical radiation therapy as an intratherapy dosimetry tool. The measured XA signal showed good correlation with the water-absorbed dose measured with conventional dosimetry. We acquired the absorbed X-ray dose distribution in a lead sample by mechanically scanning the focused US transducer. The lateral spatial resolution of the XA signal was 2.1 ± 0.5 mm, and signal-to-noise ratio of the signal was maintained with 100-mm penetration depth, whereas that of a laser-driven photoacoustic signal was exponentially decreased.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/41057
- DOI
- 10.1109/TRPMS.2017.2757484
- ISSN
- 2469-7311
- Article Type
- Article
- Citation
- IEEE Transactions on Radiation and Plasma Medical Sciences, vol. 1, no. 6, page. 534 - 540, 2017-09
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