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J Wrist Surg 2021; 10(01): 084-092
DOI: 10.1055/s-0040-1715799
Emerging Technologies and New Technological Concepts

Using an Office-Based, Dedicated Extremity MRI Scanner for Depicting Important Structures in Common Wrist Pathologies: A Pilot Comparison with a Conventional MRI Scanner

Qi Yin
1   Department of Plastic, Reconstructive, and Hand Surgery, Amsterdam University Medical Center, Amsterdam, The Netherlands
2   Department of Radiology, St. Jansdal Hospital, Harderwijk, The Netherlands
,
Radu A. Manoliu
3   MRI Center Amsterdam, Amsterdam, The Netherlands
,
Jayant R. Kichari
2   Department of Radiology, St. Jansdal Hospital, Harderwijk, The Netherlands
,
Marco J. P. F. Ritt
1   Department of Plastic, Reconstructive, and Hand Surgery, Amsterdam University Medical Center, Amsterdam, The Netherlands
4   The Hand Clinic Amsterdam, Amsterdam, TheNetherlands
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Abstract

Background Compared with the conventional magnetic resonance imaging (MRI), dedicated MRI scanners are more accessible. Images of a dedicated 1.0-T MRI specifically developed for the hand and wrist were compared with images of a conventional 1.5-T MRI.

Methods Paired images of the right wrist were randomized and separately graded by two experienced radiologists for the quality of anatomical details, including the triangular fibrocartilage complex, carpal ligaments, intercarpal cartilage, median and ulnar nerves, overall image quality, and artifacts. Interrater reliability was measured with the percentage of exact agreement and agreement within a range of ± 1 score point. Participant experience of undergoing the examination in both MRI scanners was evaluated using a questionnaire.

Results The overall image quality of all sequences was considered to be moderate to high. In 25 of 38 paired images, no statistically significant difference was found between the MRI scanners. Ten scores were found to be in favor of the dedicated extremity MRI. Within a range of ± 1 score point, the extremity MRI and the conventional MRI demonstrated an interrater agreement of 67 to 100% and 70 to 100%, respectively. Among the respondents of the questionnaire, the extremity MRI scored better for participant satisfaction when compared with the conventional MRI.

Conclusions In healthy volunteers, the dedicated extremity MRI generally is similar or superior to the conventional MRI in the depiction of anatomical structures of the wrists, image quality, and artifacts, and significantly scored better on participant satisfaction. Future clinical studies should focus on defining the diagnostic value of the extremity MRI in wrist pathologies.

Keywords

Magnetic Resonance Imaging - wrist - hand - extremity - anatomy


Publication History

Received: 13 May 2020

Accepted: 06 July 2020

Article published online:
14 October 2020

© 2020. Thieme. All rights reserved.

Thieme Medical Publishers, Inc.
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