Abstract #2905

Visualizing Human Aortic Valve Opening and Closing with Sub-Millisecond Temporal Resolution Over a Reduced Field-of-View

Zheng Zhong^1,2, Qingfei Luo¹, Kaibao Sun¹, Guangyu Dan^1,2, Muge Karaman^1,2, and Xiaohong Joe Zhou^1,2,3,4

¹CMRR, University of Illinois at Chicago, Chicago, IL, United States, ²Bioengineering, University of Illinois at Chicago, Chicago, IL, United States, ³Neurosurgery, University of Illinois at Chicago, Chicago, IL, United States, ⁴Radiology, University of Illinois at Chicago, Chicago, IL, United States

An imaging technique, coined epi-based Sub-millisecond Periodic Event Encoded Dynamic Imaging, or epi-SPEEDI, has been shown capable of visualizing the rapid opening and closing of human aortic valve with sub-millisecond temporal resolution. However, the acquisition time of epi-SPEEDI was relatively long (8-10 breath holds). Herein, we report an alternative SPEEDI technique with a reduced FOV, which we call rFOV-SPEEDI, to shorten the scan times. This technique has been successfully applied to visualization of human aortic valve opening and closing with a temporal resolution of 0.6 ms, together with a scan time reduction of 32.5%.

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

Join Here