Single slice MR image estimation of 3D supraspinatus intramuscular fatty infiltration in older adults: relevance for clinical practice and research.

IF 1.9 3区医学 Q2 ORTHOPEDICS

Skeletal Radiology Pub Date : 2026-01-01 Epub Date: 2024-05-23 DOI:10.1007/s00256-024-04706-3

Ranyah Almardawi, Leopoldo Garcia Zapata, Ramnik Gill, Jacqueline Addona, Irina Kapustina, Sagheer R Ahmed, Kimia Kani, Derik L Davis

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引用次数: 0

Abstract

Objective: (1) To compare older adults stratified by supraspinatus tendon tear status (STT status)-no tear (Intact), partial-thickness (PT) tear, full-thickness (FT) tear-by 3D Dixon fat fraction (3D-FF); 2D fat fraction (2D-FF); and 2D Goutallier grade (2D-GG) at the Y-shaped view, and 1.4 cm and 2.8 cm medial to the Y-shaped view. Stratified by STT status to determine (2) correlation of 3D-FF with 2D-FF and 2D-GG and (3) inter-rater reliability at and medial to the Y-shaped view.

Materials and methods: Forty-five volunteers ≥ 60 years recruited prospectively received shoulder MRI. 3D-FF and 2D-FF were measured on 6-point-Dixon MRI by three trainees. Goutallier grade was assessed on T1-weighted MRI by three fellowship-trained diagnostic radiologists. Descriptive, reliability, and correlation analyses were performed.

Results: Groups showed no difference in age. The FT group showed higher (p < 0.05) mean 3D-FF (14.09% ± 10.99%), mean 2D-FF (1.4 cm medial to Y-shaped view, 14.91% ± 12.11%; 2.8 cm medial to Y-shaped view, 13.32% ± 9.48%), and mean 2D-GG (Y-shaped view, 1.71 ± 0.78; 1.4 cm medial to Y-shaped view, 1.71 ± 0.69; 2.8 cm medial to Y-shaped view, 1.71 ± 0.72), relative to Intact/PT groups. 3D-FF showed strong correlation with 2D-FF among all groups/all analyses (rho, 0.80-0.98; p < 0.001). 3D-FF showed strong correlation with 2D-GG for all FT group analyses (rho, 0.85-0.91; p < 0.05). 3D-FF showed moderate-to-strong correlation considering all Intact/PT group analyses (rho, 0.51-0.79; p < 0.50). Dixon fat fraction showed excellent reliability for all groups (≥ 0.884, intraclass correlation coefficient). Goutallier grade showed excellent reliability for FT group (0.771, weighted Fleiss's kappa) but poor (0.294) and fair (0.502) for Intact and PT groups, respectively.

Conclusion: Single slice MR image estimation of 3D supraspinatus intramuscular fatty infiltration has merit for continued use in clinical populations requiring potential rotator-cuff-repair surgery. However, Dixon fat fraction should be prioritized for use in research over Goutallier grade due to superior reliability.

Abstract Image

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老年人冈上肌肌内脂肪浸润的三维单片 MR 图像估算：对临床实践和研究的意义。

目的：(1) 根据冈上肌腱撕裂状态（STT 状态）--无撕裂（完好无损）、部分厚度撕裂（PT）、全厚撕裂（FT）--对老年人进行分层，在 Y 型切面、Y 型切面内侧 1.4 厘米和 2.8 厘米处通过三维 Dixon 脂肪分数（3D-FF）、二维脂肪分数（2D-FF）和二维 Goutallier 等级（2D-GG）进行比较。根据 STT 状态进行分层，以确定 (2) 3D-FF 与 2D-FF 和 2D-GG 的相关性，以及 (3) Y 型切面和 Y 型切面内侧的评分者之间的可靠性：前瞻性招募的 45 名年龄≥ 60 岁的志愿者接受了肩部 MRI 检查。由三名受训者在 6 点-Dixon MRI 上测量三维-FF 和二维-FF。三名受过研究培训的放射诊断医师在 T1 加权磁共振成像上对 Goutallier 等级进行评估。对结果进行了描述性、可靠性和相关性分析：结果：各组在年龄上没有差异。结果显示：各组在年龄上无差异，FT 组显示出更高的年龄（P三维冈上肌内脂肪浸润的单切片 MR 图像估算值得在可能需要进行肩袖修复手术的临床人群中继续使用。不过，由于 Dixon 脂肪分数比 Goutallier 等级更可靠，在研究中应优先使用 Dixon 脂肪分数。

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来源期刊

Skeletal Radiology 医学-核医学

CiteScore

4.40

自引率

9.50%

发文量

253

审稿时长

3-8 weeks

期刊介绍： Skeletal Radiology provides a forum for the dissemination of current knowledge and information dealing with disorders of the musculoskeletal system including the spine. While emphasizing the radiological aspects of the many varied skeletal abnormalities, the journal also adopts an interdisciplinary approach, reflecting the membership of the International Skeletal Society. Thus, the anatomical, pathological, physiological, clinical, metabolic and epidemiological aspects of the many entities affecting the skeleton receive appropriate consideration. This is the Journal of the International Skeletal Society and the Official Journal of the Society of Skeletal Radiology and the Australasian Musculoskelelal Imaging Group.