Meeting Banner
Abstract #1252

UTE with Multi-Echo Radial Acquisition for PET/MRI Attenuation Correction

Zhengyang Ming1, Paul Kyu Han2, Debra E. Horng2, Shuang Hu2,3, Kui Ying1,4, Chao Ma2, and Georges El Fakhri2

1Engineering Physics, Tsinghua University, Beijing, China, 2Gordon Center for Medical Imaging, Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States, 3Nuclear Medicine, West China Hospital, Sichuan University, Sichuan, China, 4Key Laboratory of Particle and Radiation Imaging, Ministry of Education, Medical Physics and Engineering Institute, Tsinghua University, Beijing, China

Reliable estimation of PET attenuation coefficient (AC) is a fundamental problem in PET/MR imaging. Accurate measurement of bone density variation is vital to generate reliable subject-specific AC maps using MR. Also, minimizing the data acquisition time of MR sequences for AC is essential to allow more MR scans in a single PET/MR scanning session. In this work, we propose a new acquisition scheme combining UTE and multi-echo radial acquisition to reliably estimate the composition of water, fat and bone in a minute scan. Results show that water, fat and bone signals can be estimated in using the proposed method, which can be potentially used to estimate subject-specific AC maps.

This abstract and the presentation materials are available to members only; a login is required.

Join Here