Tracking Platform Design and Implementation for Ultrasound-Guided Focused Ultrasound Treatment
Date Issued
2010
Date
2010
Author(s)
Ho, Cheng-Hsien
Abstract
Our goal of research is to build an ultrasound guided HIFU (High Intensity Focused ultrasound) treatment system which is applied to treat the liver cancer. Liver motion is related to the frequency of respiration, it’s approximately 4 Hz in the normal situation. Therefore, it makes the treatment more different to compensate the dynamic state. Ultrasound is selected as the imaging modality, because ultrasound can provide real-time imaging and frame rate is up to 30Hz. In terms of treatment, we adopt HIFU transducer because it provides thermal dose to heat the focus instead of radiation treatment and it’s a kind of non-invasive system. Based on the image obtained from the ultrasound, HIFU transducer is carried to heat the object. The mechanical tracking system combined the motor, screw, magnetic sensor, and linear scale to track the liver motion. The mechanism design and implementation is completed, and the design is based on the liver movement, the characteristic of ultrasound, HIFU, and magnetic sensor. The experiment results show that the tracking system is able to apply the treatment and the tracking error was close to 0.25mm.
Subjects
ultrasound
therapeutic system
motor
SDGs
Type
thesis
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