Sub-millisecond 2D MRI of the vocal fold oscillation using single-point imaging with rapid encoding.

ABSTRACT:

Objective

The slow spatial encoding of MRI has precluded its application to rapid physiologic motion in the past. The purpose of this study is to introduce a new fast acquisition method and to demonstrate feasibility of encoding rapid two-dimensional motion of human vocal folds with sub-millisecond resolution.

Method

In our previous work, we achieved high temporal resolution by applying a rapidly switched phase encoding gradient along the direction of motion. In this work, we extend phase encoding to the second image direction by using single-point imaging with rapid encoding (SPIRE) to image the two-dimensional vocal fold oscillation in the coronal view. Image data were gated using electroglottography (EGG) and motion corrected. An iterative reconstruction with a total vari

SUBMITTER: Fischer J 

PROVIDER: S-EPMC8995286 | biostudies-literature | 2022 Apr

REPOSITORIES: biostudies-literature