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13-05-2023 | Magnetic Resonance Imaging | Gastrointestinal

Deep learning–based reconstruction and 3D hybrid profile order technique for MRCP at 3T: evaluation of image quality and acquisition time

Authors: Kaori Shiraishi, Takeshi Nakaura, Hiroyuki Uetani, Yasunori Nagayama, Masafumi Kidoh, Naoki Kobayashi, Kosuke Morita, Yuichi Yamahita, Yasuhito Tanaka, Hideo Baba, Toshinori Hirai

Published in: European Radiology | Issue 11/2023

Abstract

Objectives

To evaluate the image quality of the 3D hybrid profile order technique and deep-learning-based reconstruction (DLR) for 3D magnetic resonance cholangiopancreatography (MRCP) within a single breath-hold (BH) at 3 T magnetic resonance imaging (MRI).

Methods

This retrospective study included 32 patients with biliary and pancreatic disorders. BH images were reconstructed with and without DLR. The signal-to-noise ratio (SNR), contrast, contrast-to-noise ratio (CNR) between the common bile duct (CBD) and periductal tissues, and full width at half maximum (FWHM) of CBD on 3D-MRCP were evaluated quantitatively. Two radiologists scored image noise, contrast, artifacts, blur, and overall image quality of the three image types using a 4-point scale. Quantitative and qualitative scores were compared using the Friedman test and post hoc Nemenyi test.

Results

The SNR and CNR were not significantly different when under respiratory gating- and BH-MRCP without DLR. However, they were significantly higher under BH with DLR than under respiratory gating (SNR, p = 0.013; CNR, p = 0.027). The contrast and FWHM of MRCP under BH with and without DLR were lower than those under respiratory gating (contrast, p < 0.001; FWHM, p = 0.015). Qualitative scores for noise, blur, and overall image quality were higher under BH with DLR than those under respiratory gating (blur, p = 0.003; overall, p = 0.008).

Conclusions

The combination of the 3D hybrid profile order technique and DLR is useful for MRCP within a single BH and does not lead to the deterioration of image quality and space resolution at 3 T MRI.

Clinical relevance statement

Considering its advantages, this sequence might become the standard protocol for MRCP in clinical practice, at least at 3.0 T.

Key Points

• The 3D hybrid profile order can achieve MRCP within a single breath-hold without a decrease in spatial resolution.

• The DLR significantly improved the CNR and SNR of BH-MRCP.

• The 3D hybrid profile order technique with DLR reduces the deterioration of image quality in MRCP within a single breath-hold.

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Title: Deep learning–based reconstruction and 3D hybrid profile order technique for MRCP at 3T: evaluation of image quality and acquisition time
Authors: Kaori Shiraishi
Takeshi Nakaura
Hiroyuki Uetani
Yasunori Nagayama
Masafumi Kidoh
Naoki Kobayashi
Kosuke Morita
Yuichi Yamahita
Yasuhito Tanaka
Hideo Baba
Toshinori Hirai
Publication date: 13-05-2023
Publisher: Springer Berlin Heidelberg
Keywords: Magnetic Resonance Imaging
Magnetic Resonance Imaging
Magnetic Resonance Cholangio Pancreatography
Published in: European Radiology / Issue 11/2023
Print ISSN: 0938-7994
Electronic ISSN: 1432-1084
DOI: https://doi.org/10.1007/s00330-023-09703-z

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Deep learning–based reconstruction and 3D hybrid profile order technique for MRCP at 3T: evaluation of image quality and acquisition time

Abstract

Objectives

Methods

Results

Conclusions

Clinical relevance statement

Key Points

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Abstract

Objectives

Methods

Results

Conclusions

Clinical relevance statement

Key Points

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