Simultaneous multi-slice technique for reducing acquisition times in diffusion tensor imaging of the knee: a feasibility study.

IF 1.9 3区医学 Q2 ORTHOPEDICS

Skeletal Radiology Pub Date : 2025-02-01 Epub Date: 2024-06-24 DOI:10.1007/s00256-024-04719-y

Simin Liu, Yao Zhang, Wei Liu, Ting Yin, Jie Yuan, Jun Ran, Xiaoming Li

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引用次数: 0

Abstract

Objectives: To explore the feasibility of simultaneous multi-slice (SMS) technique for reducing acquisition times in readout-segmented echo planar imaging (RESOLVE) for diffusion tensor imaging (DTI) of the knee.

Materials and methods: A total of 30 healthy volunteers and 23 patients with knee acute injury (12 cases with anterior ligament (ACL) tears and 16 cases with patellar cartilage (PC) injury) were enrolled in this prospective study. Three DTI protocols were used: conventional RESOLVE-DTI with 12 directions (protocol 1), SMS-RESOLVE-DTI with 12 directions (protocol 2) and 20 directions (protocol 3). DTI parameters of gastrocnemius, ACL and posterior cruciate ligament (PCL), and PC from three protocols were quantitatively assessed.

Results: For volunteers, protocol 2 significantly reduced acquisition time by 38.6% and 34.2% compared to protocols 1 and 3 while maintaining similar high-quality images and similar diffusive parameters, except for the fractional anisotropy (FA) and axial diffusivity (AD) of the PC between protocols 2 and 1 (P < 0.05). For injured ACL and PC, protocols 1 and 2 showed similar accurate diffusive parameters (except for AD, P = 0.025) and similar diagnostic efficacy, which demonstrated significantly lower FA and higher radial diffusivity (RD) in protocols 1 and 2 compared to volunteers (P < 0.05).

Conclusions: The 12-direction SMS-RESOLVE-DTI demonstrated a favorable balance between acquisition time and image quality, making it a promising alternative to conventional DTI for evaluating ligament and cartilage injuries.

Advances in knowledge: The SMS technique greatly reduces acquisition time while maintaining image quality, which signified the possibility of DTI's clinical application.

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缩短膝关节弥散张量成像采集时间的同步多切片技术：一项可行性研究。

目的探索同步多切片（SMS）技术在膝关节弥散张量成像（DTI）中减少读出分割回波平面成像（RESOLVE）采集时间的可行性：这项前瞻性研究共纳入了 30 名健康志愿者和 23 名膝关节急性损伤患者（12 例前韧带（ACL）撕裂，16 例髌骨软骨（PC）损伤）。研究采用了三种 DTI 方案：12 个方向的传统 RESOLVE-DTI 方案（方案 1）、12 个方向的 SMS-RESOLVE-DTI 方案（方案 2）和 20 个方向的 SMS-RESOLVE-DTI 方案（方案 3）。对三种方案中腓肠肌、前交叉韧带和后交叉韧带（PCL）以及 PC 的 DTI 参数进行了定量评估：结果：对于志愿者，方案 2 与方案 1 和方案 3 相比，采集时间分别大幅缩短了 38.6% 和 34.2%，同时保持了相似的高质量图像和相似的弥散参数，但方案 2 与方案 1 之间 PC 的分数各向异性（FA）和轴向弥散率（AD）有所不同（P 结论：SMS-RESE12 方向的 DTI 采集时间比方案 1 和方案 3 要短：12 向 SMS-RESOLVE-DTI 在采集时间和图像质量之间取得了良好的平衡，使其有望替代传统 DTI 评估韧带和软骨损伤：SMS技术在保证图像质量的同时大大缩短了采集时间，这为DTI的临床应用提供了可能。

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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.