Optimization of abdominal MRI images with the application of propeller

Abstract

Background

Movement of abdominal organs due to breathing on MRI examination on the abdomen causes motion artifacts that may reduce image quality. Abdominal MRI protocol to reduce respiratory motion artifacts is by using respiratory gating, howeverit results in longer time scan. PROPELLER is a technique for filling data matrices radially with a blade coverage value that is able to reduce artifacts.

Objective

To study the application of PROPELLER on abdominal MRI to reduce motion artifacts, get optimal anatomical and image quality information with faster time scan.

Methods

This was an experimental study with one group post test design. The samples in the study were 8 respondents, each of which received 8 treatments. One treatment used respiratory gating as a standard protocol and 7 treatmentsapplied PROPELLER using coverage blade variations of 50%, 75%, 100%, 125%, 150%, 175% and 200%. Assessment included time scan, anatomical information, artifacts, SNR, and CNR. Statistical data analysis usedKruskal Wallis test, Wilcoxon test and Spearman test.

Results

There were differences in anatomical information, CNR, SNR, artifacts and time scan between the use of abdominal MRI image and respiratory gating compared to PROPELLER on 100% blade coverage.

Conclusion

The application of PROPELLER with a 100% blade coverage value was able to reduce motion artifact so as to produce optimal anatomical information and image quality with faster time scan.