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Volume 12
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10.3390/diagnostics12102551
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Article

Use of a Small Car-Mounted Magnetic Resonance Imaging System for On-Field Screening for Osteochondritis Dissecans of the Humeral Capitellum

by
Kazuhiro Ikeda
1,2,
Yoshikazu Okamoto
3,
Takeshi Ogawa
4,
Yasuhiko Terada
5,
Michiru Kajiwara
5,
Tomoki Miyasaka
5,
Ryuhei Michinobu
2,
Yuki Hara
6,
Yuichi Yoshii
7,*,
Takahito Nakajima
3 and
Masashi Yamazaki
2
1
Department of Orthopedic Surgery, Kikkoman General Hospital, Noda 278-0005, Chiba, Japan
2
Department of Orthopedic Surgery, Faculty of Medicine, University of Tsukuba, Tsukuba 305-8577, Ibaraki, Japan
3
Institute of Clinical Medicine, Department of Diagnostic and Interventional Radiology, University of Tsukuba, Tsukuba 305-8577, Ibaraki, Japan
4
Department of Orthopedic Surgery, Mito Medical Center, Ibaraki 311-3193, Ibaraki, Japan
5
Institute of Applied Physics, University of Tsukuba, Tsukuba 305-8577, Ibaraki, Japan
6
Department of Orthopedic Surgery, National Center of Neurology and Psychiatry, Kodaira 187-8551, Tokyo, Japan
7
Department of Orthopedic Surgery, Tokyo Medical University Ibaraki Medical Center, Ami 300-0395, Ibaraki, Japan
*
Author to whom correspondence should be addressed.
Diagnostics 2022, 12(10), 2551; https://doi.org/10.3390/diagnostics12102551
Submission received: 21 September 2022 / Revised: 16 October 2022 / Accepted: 19 October 2022 / Published: 20 October 2022
(This article belongs to the Section Medical Imaging and Theranostics)
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Abstract

Mobile magnetic resonance imaging (MRI) using a car is a recent advancement in imaging technology. Specifically, a car-mounted mobile MRI system is expected to be used for medical check-ups; however, this is still in the research stage. This study demonstrated the practicality of a small car-mounted mobile MRI in on-field screening for osteochondritis dissecans (OCD) of the humeral capitellum. In the primary check-up, we screened the throwing elbows of 151 young baseball players using mobile MRI and ultrasonography. We definitively diagnosed OCD at the secondary check-up using X-ray photography and computed tomography or MRI. We investigated the sensitivity and specificity of mobile MRI and ultrasonography for OCD. Six patients were diagnosed with OCD. The sensitivity was 83.3% for mobile MRI and 66.7% for ultrasonography, with specificity of 99.3% vs. 100%, respectively. One patient was detected using ultrasonography but was missed by mobile MRI due to poor imaging quality at the first medical check-up. Following this false-negative case, we replaced a damaged radio frequency coil to improve the image quality, and the mobile MRI could detect all subsequent OCD cases. Two patients were diagnosed by mobile MRI only; ultrasonography missed cases lacking subchondral bone irregularity, such as a healing case, and an early-stage case. Mobile MRI could screen for OCD from the very early stages through the healing process and is therefore a practical tool for on-field screening.
Keywords: magnetic resonance imaging; mobile; portable; osteochondritis dissecans; OCD; baseball; medical check-up; screening; low-field MRI magnetic resonance imaging; mobile; portable; osteochondritis dissecans; OCD; baseball; medical check-up; screening; low-field MRI

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MDPI and ACS Style

Ikeda, K.; Okamoto, Y.; Ogawa, T.; Terada, Y.; Kajiwara, M.; Miyasaka, T.; Michinobu, R.; Hara, Y.; Yoshii, Y.; Nakajima, T.; et al. Use of a Small Car-Mounted Magnetic Resonance Imaging System for On-Field Screening for Osteochondritis Dissecans of the Humeral Capitellum. Diagnostics 2022, 12, 2551. https://doi.org/10.3390/diagnostics12102551

AMA Style

Ikeda K, Okamoto Y, Ogawa T, Terada Y, Kajiwara M, Miyasaka T, Michinobu R, Hara Y, Yoshii Y, Nakajima T, et al. Use of a Small Car-Mounted Magnetic Resonance Imaging System for On-Field Screening for Osteochondritis Dissecans of the Humeral Capitellum. Diagnostics. 2022; 12(10):2551. https://doi.org/10.3390/diagnostics12102551

Chicago/Turabian Style

Ikeda, Kazuhiro, Yoshikazu Okamoto, Takeshi Ogawa, Yasuhiko Terada, Michiru Kajiwara, Tomoki Miyasaka, Ryuhei Michinobu, Yuki Hara, Yuichi Yoshii, Takahito Nakajima, and et al. 2022. "Use of a Small Car-Mounted Magnetic Resonance Imaging System for On-Field Screening for Osteochondritis Dissecans of the Humeral Capitellum" Diagnostics 12, no. 10: 2551. https://doi.org/10.3390/diagnostics12102551

APA Style

Ikeda, K., Okamoto, Y., Ogawa, T., Terada, Y., Kajiwara, M., Miyasaka, T., Michinobu, R., Hara, Y., Yoshii, Y., Nakajima, T., & Yamazaki, M. (2022). Use of a Small Car-Mounted Magnetic Resonance Imaging System for On-Field Screening for Osteochondritis Dissecans of the Humeral Capitellum. Diagnostics, 12(10), 2551. https://doi.org/10.3390/diagnostics12102551

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