Computerized Tomography of Projection Ultrasound
Abstract
The second year of this training/research project focused on ultrasound tomography System simulation, integrating, and the tomography image reconstruction. A micro-Stepping motor has been purchased and integrated in the transmission ultrasound laboratory system (Imperium Acoustocam) and form a Transmission Ultrasound Computerized Tomography (TUCT) prototype system. The stepping motor is capable of rotating at a 1.8-degree per step with 200 steps per revolution up to a 1600 steps per revolution with 0.225 degrees resolution. Based on the prototype system, the first experiment of UTCT images has been performed using a silicone phantom. The image profiles were acquired by the Imperium Acoustocam. These image intensity profiles were then converted into ultrasound attenuation and used to reconstruct the ultrasound attenuation tomography images through filtered backprojection reconstruction algorithm. Since the CMOS acquisition is not perfectly linear with 1100 chip, the newly developed 1300 chip will be used to perform the study in the future study. In addition, a scattering component will be added in the filtering algorithm to compensate for the attenuation signal.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 2003
- Accession Number
- ADA421802
Entities
People
- Chu-chuan Liu
- Yue Wang
Organizations
- The Catholic University of America