Yoon-joo Lee1, Jae-young Byun1,
So-lyung Jung1, Won-jong Yoo1, Young-joo Kim1,
Kook-jin Ahn1, Bum-soo KIM1
1Department of Radiology, The Catholic
University of Korea, Seoul, Korea, Republic of
This
study evaluates feasibility and effectiveness of low-dose TR-CEMRA (with
injection of 1cc of Gadobutrol followed by 20cc of saline) performed in the
assessment of supraaortic vessel, acquired with combination of parallel
imaging (GRAPA) and view-sharing technique (TWIST) at 3T. Retrospective
evaluation of image quality and stenosis grade by two neuroradiologist was
done, and compared with the results from high-resolution single-phase CEMRA.
The overall image quality for low-dose TR-CEMRA was in diagnostic range,
comparable to HR-CEMRA. In grading of stenosis, TR-CEMRA showed concordant
results with HR-CEMRA in 90.8%, with relatively more number of overestimation
than underestimation.
Keywords