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Tendon Healing Progression Evaluated With Magnetic Resonance Imaging Signal Intensity and Its Correlation With Clinical Outcomes Within 1 Year After Rotator Cuff Repair With the Suture-Bridge Technique.
用磁共振成像信号强度评估肌腱愈合进展及其与缝合桥技术修复肩袖后 1 年内临床结果的相关性。
magnetic resonance imaging (MRI) rotator cuff signal/noise quotient (SNQ) tendon healing
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摘要

BACKGROUND:After a rotator cuff (RC) is repaired, its signal intensity (SI) on magnetic resonance imaging (MRI) gradually changes to normal and could reflect the degree of RC healing. Nevertheless, it remains unclear how long it takes for SI to recover to normal and whether the SI progression correlates with clinical outcomes after RC repair (RCR).
PURPOSE:To serially evaluate the SIs of the repaired RC tendon on MRI and the postoperative clinical outcomes and then analyze the correlation between them.
STUDY DESIGN:Case series; Level of evidence, 4.
METHODS:This study prospectively included 25 patients who underwent arthroscopic RCR with the suture-bridge technique between June 2016 and July 2017. Twenty-three patients accepted full follow-ups at 1, 3, 6, 9, and 12 months. Before surgery and at each follow-up, visual analog scale (VAS) for pain and 4 functional scores were evaluated: Constant-Murley score, American Shoulder and Elbow Surgeons shoulder evaluation form, modified University of California at Los Angeles score, and Fudan University shoulder score. The patients underwent MRI examinations at every follow-up. The values of the signal/noise quotient at the distal (SNQd) and proximal (SNQp) areas were calculated to evaluate the SI of the repaired tendon. The correlations of clinical outcomes with SNQd and SNQp values were analyzed, and subgroup analyses were performed.
RESULTS:Overall, the mean postoperative VAS score significantly decreased at postoperative 1 month (P < .001), and the functional scores were all significantly higher than the preoperative values at 6 months (all P < .001). SNQd and SNQp values were both significantly higher than normal at 1 and 3 months (all P < .001) and reduced to normal after 9 and 6 months, respectively. Correlation analyses showed that the SNQp value significantly correlated with VAS score (positive) and all functional scores (negative) at 1 and 3 months postoperatively. Further comparison indicated that the patients with VAS score >3 had higher SNQp values than patients with VAS score ≤3 at 1 and 3 months postoperatively (both P = .01).
CONCLUSION:After RCR with the suture-bridge technique, it took longer for SI to become relatively normal than it did to have a significant clinical improvement. Early after surgery (1-3 months), worse clinical outcome correlated with higher SI on proximal cuff tendon.

译文

背景: 肩袖 (RC) 修复后,其磁共振成像 (MRI) 上的信号强度 (SI) 逐渐变为正常,可以反映 RC 愈合的程度。然而,目前尚不清楚 SI 恢复到正常需要多长时间,以及 SI 进展是否与 RC 修复 (RCR) 后的临床结果相关。
目的: 通过 MRI 对修复 RC 肌腱的 SIs 和术后临床结果进行连续评价,并分析两者之间的相关性。
研究设计: 案例系列; 证据水平,4。
方法: 本研究前瞻性纳入了 25 名患者,他们在 2016年6月至 2017年7月间接受了缝合桥技术的关节镜 RCR。23 名患者在 1 、 3 、 6 、 9 和 12 个月接受了全面随访。手术前和每次随访时,评估疼痛的视觉模拟量表 (VAS) 和 4 项功能评分: Constant-Murley 评分,美国肩肘外科医生肩部评估表, 修改后的加利福尼亚大学洛杉矶分校分数和复旦大学肩部分数。患者在每次随访时进行 MRI 检查。计算远端 (SNQd) 和近端 (SNQp) 区域的信号/噪声商值,以评估修复肌腱的 SI。分析临床结果与 SNQd 和 SNQp 值的相关性,并进行亚组分析。
结果: 总体上,平均术后 1 个月 VAS 评分明显下降 (P <. 001),且 6 个月时各项功效评分均显著高于术前值 (均 P <0。 001)。SNQd 和 SNQp 值在 1 个月和 3 个月时均显著高于正常 (均 P <.001),并分别在 9 个月和 6 个月后降至正常。相关分析显示术后 1 个月和 3 个月 SNQp 值与 VAS 评分 (阳性) 和所有功能评分 (阴性) 显著相关。进一步比较表明,术后 1 个月和 3 个月时,VAS 评分> 3 的患者比 VAS 评分 ≤ 3 的患者 SNQp 值更高 (均 P =.01)。
结论: 采用缝合桥技术进行 RCR 后,SI 相对正常所需的时间比具有显著临床改善所需的时间长。手术后早期 (1-3 个月),更糟糕的临床结果与近端袖口肌腱较高的 SI 相关。

Magnetic Resonance Imaging

肿瘤 影像 诊断方式
概述  :  

磁共振成像(MRI)是根据生物体磁性核(氢核)在磁场中的表现特性成像的高新技术。二十余年来,随着超导技术、低温技术、磁体技术、电子技术、成像技术和计算机等相关技术的进步,磁共振成像技术得到了飞速发展。如今,其已广泛应用于临床,成为现代医学影像领域中不可缺少的一员。MRI的物理基础是核磁共振(NMR)理论。所谓NMR,是指与物质磁性核磁场有关的共振现象,也可以说是低能量电磁波,即射频波与既有角动量又有磁矩的核系统在外界磁场中相互作用所表现出来的共振特性。NMR的本质是

Magnetic   英 /mæɡˈnetɪk/   美 /mæɡˈnetɪk/

释    义   adj. 地磁的;有磁性的;有吸引力的

同根词   magnetized adj. 已磁化的

               magnetically adv. 有磁力地;有吸引力地

               magnetism n. 磁性,磁力;磁学;吸引力

               magnetized v. 磁化(magnetize的过去分词);吸引

               magnetize vi. 磁化;受磁

               magnetize vt. 吸引;使磁化

               magnetise vt. 使……磁化;使……有磁力

例    句   Due to the magnetic effects, the occurrence rate of the instability is not symmetric in longitudes even at the magnetic equator. 由于地磁位型的不同,发生率的分布并不具有经度对称性,即使在磁赤道附近也如此。

 

Resonance   英 /ˈrezənəns/   美 /ˈrezənəns/

释    义   n. [力] 共振;共鸣;反响

同根词   resonant adj. 洪亮的,共振的;共鸣的

               resonating adj. 产生共鸣的

               resonator n. [声] 共鸣器,共鸣体;共振器

               resonating n. 感通

               resonating v. 产生共鸣;回响(resonate 的ing形式)

               resonate vi. 共鸣;共振

               resonate vt. 共鸣;共振

例    句   Resonance would occur again, but not so strong as before. 共振会再次发生,但不如先前那么强。

 

Imaging   英 /ˈɪmɪdʒɪŋ/   美 /ˈɪmɪdʒɪŋ/

释    义   n. 成像;v. 想像(image的ing形式);画…的像

同根词   imaginary adj. 虚构的,假想的;想像的;虚数的

               imaginative adj. 虚构的;富于想像的;有创造力的

               imaginable adj. 可能的;可想像的

               image n. 影像;想象;肖像;偶像

               imagine vi. 想像;猜想;想像起来

               image vt. 想象;反映;象征;作…的像

               imagine vt. 想像;猜想;臆断

例    句   So using brain imaging, she focused on the white matter, or nerve tissue, of the brain. 因此,观察大脑成像时,她将注意力放在大脑的白质或神经组织上。

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