학술논문
A magnetic resonance compatible E4D ultrasound probe for motion management of radiation therapy
Document Type
Conference
Author
Source
2017 IEEE International Ultrasonics Symposium (IUS) Ultrasonics Symposium (IUS), 2017 IEEE International. :1-4 Sep, 2017
Subject
Language
ISSN
1948-5727
Abstract
We developed a magnetic resonance compatible real-time, three-dimensional imaging ultrasound probe for motion management of radiation therapy for liver cancer. The probe contains an 18,000-element, 46.8 mm × 21.5 mm matrix array constructed from three tiled transducer modules with integrated beamforming ASICs. The center frequency and −6 dB fractional bandwidth of the probe was 3.6 MHz and 85 percent respectively. Ferromagnetic materials in the acoustic stack, flex interconnect and electronics boards were greatly minimized for magnetic resonance compatibility. The probe and cable were shielded to minimize the impact of radiofrequency noise on both the ultrasound and magnetic resonance images. The probe's low-profile, side-viewing design allows it to be strapped to a patient so that images may be acquired hands-free. We present simultaneously acquired ultrasound and 3 Tesla magnetic resonance images with minimal artifacts in both images.