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Current Medical Imaging

Editor-in-Chief

ISSN (Print): 1573-4056
ISSN (Online): 1875-6603

Research Article

Adaptive Training: A New Method to Improve the Image Quality of Abdominal Magnetic Resonance Imaging

Author(s): Fu Kun, Ran Qisheng, Guo Guang-Kuo, Zhang Letian* and Xie Huan*

Volume 19, Issue 9, 2023

Published on: 22 December, 2022

Article ID: e301122211391 Pages: 6

DOI: 10.2174/1573405619666221130114646

Price: $65

Abstract

Background: In abdominal magnetic resonance imaging (MRI), the late hepatic arterial phase is particularly important for the diagnosis of hepatocellular carcinoma (HCC). However, poor patient compliance with breath-hold imaging acquisition protocols and the administration of the liverspecific contrast agent gadolinium ethoxybenzyl-diethylenetriaminepentaacetic acid (Gd-EOB-DTPA) increases the motion artifacts that degrade the quality of the images making it more difficult to interpret the images.

Objective: This study aimed to evaluate the role of adaptive respiratory training in improving the quality of the MRI by reducing the motion artifacts and improving the signal intensity from the regions of interest (ROI) in the late hepatic arterial phase.

Methods: A total of 120 patients who underwent an abdominal MRI between 2021 to 2022 to assess for the liver disease were included in the study. These patients were divided into two groups: the experimental group and the control group. The patients in the experimental group received adaptive training. The incidence of motion artifacts and the signal intensity in the late hepatic arterial phase within the abdominal aorta, hepatic artery, splenic artery, and hepatic parenchyma between the experimental group and the control group were compared.

Results: The incidence of motion artifacts in the experimental group was significantly reduced by 28.3% (p = 0.001, Chi-square value = 12.079). In the late hepatic arterial phase, the signal intensity of the abdominal aorta, the hepatic artery, the splenic artery, and the hepatic parenchyma increased by 7.3%, 27.4%, 29.5%, and 6.9%, respectively.

Conclusion: Adaptive respiratory training reduced the incidence of motion artifacts and improved the signal intensity for various ROI. The improved image quality could potentially facilitate image interpretation and reduce the number of repeat MRI scans.

Keywords: Adaptation respiratory training, pre-stimulation, magnetic resonance imaging, image quality, motion artifact, late hepatic arterial phase, abdomen.

Graphical Abstract
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