Magnetic Resonance Cholangiopancreatography with GRASE Sequence at 3.0T: Does It Improve Image Quality and Acquisition Time As Compared with 3D TSE?

Overview

Journal Eur Radiol

Specialty Radiology

Date 2018 Jan 17

PMID 29335869

Citations 17

Authors

Morikatsu Yoshida

Takeshi Nakaura

Taihei Inoue

Shota Tanoue

Sentaro Takada

Daisuke Utsunomiya

Shota Tsumagari

Kazunori Harada

Yasuyuki Yamashita

Affiliations

Soon will be listed here.

Abstract

Objectives: The current study evaluated the clinical usefulness of the gradient and spin-echo (GRASE) sequence with single breath-hold in 3.0 T magnetic resonance cholangiopancreatography (MRCP). We compared the acquisition time and image quality between GRASE and breath navigator-triggered 3D turbo spin echo (3D TSE).

Methods: We examined 54 consecutive patients who underwent MRCP with GRASE and 3D TSE. We compared the image acquisition time and contrast-to-noise ratio (CNR) between the common bile duct (CBD) and liver. Overall image quality, blurring, motion artifacts and CBD visibility were scored on a 4-point scale by two radiologists. Paired t-tests were used to compare the variables.

Results: The mean image acquisition time was 95 % shorter with the GRASE than with 3D TSE (GRASE: 20 s; 3D TSE: 6 min 27 s). The CNR of GRASE was significantly higher than that of 3D TSE (GRASE: 25.4 ± 13.9 vs. 3D TSE: 18.2 ± 9.6, p < 0.01). All qualitative scores for GRASE were significantly better than those for 3D TSE.

Conclusions: 3.0 T MRCP with GRASE sequence with single breath-hold significantly improved the CNR of CBD with a 95 % shorter acquisition time compared with conventional 3D MRCP with 3D TSE.

Key Points: • MRCP acquisition time was 95% shorter with GRASE than with 3D TSE. • Overall image quality of GRASE was significantly better than 3D TSE. • Pancreaticobiliary tree visibility with GRASE was better than that with 3D TSE.

Citing Articles

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