MR diagnosis of labral tears of the shoulder: value of T2*-weighted gradient-recalled echo images made in external rotation.

Tuite, Michael J.; Smet, Arthur A. De; Norris, Martha A.; Orwin, John F.

doi:10.2214/ajr.164.4.7726053

Cited by 23 publications

(3 citation statements)

References 10 publications

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“…MRI Shoulder. Conventional MRI has shown sensitivities and specificities ranging from 44% to 100% and 66% to 95% in diagnosing labral tears [40,46,47]. The MR arthrogram adds value to conventional shoulder MRI, including 3T MRI in diagnosing labral tears [48].…”

Section: Discussion Of Procedures By Variant Variant 1: Atraumatic Shmentioning

confidence: 99%

ACR Appropriateness Criteria® Shoulder Pain-Atraumatic

Small

Adler²,

Shah

et al. 2018

Journal of the American College of Radiology

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Shoulder pain is one of the most common reasons for musculoskeletal-related physician visits. Imaging plays an important role in identifying the specific cause of atraumatic shoulder pain. This review is divided into two parts. The first part provides a general discussion of various imaging modalities (radiographs, arthrography, nuclear medicine, ultrasound, CT, and MRI) and their usefulness in evaluating atraumatic shoulder pain. The second part focuses on the most appropriate imaging algorithms for specific shoulder conditions including: rotator cuff disorders, labral tear/ instability, bursitis, adhesive capsulitis, biceps tendon abnormalities, postoperative rotator cuff tears, and neurogenic pain.The American College of Radiology Appropriateness Criteria are evidence-based guidelines for specific clinical conditions that are reviewed annually by a multidisciplinary expert panel. The guideline development and revision include an extensive analysis of current medical literature from peer reviewed journals and the application of well-established methodologies (RAND/UCLA Appropriateness Method and Grading of Recommendations Assessment, Development, and Evaluation or GRADE) to rate the appropriateness of imaging and treatment procedures for specific clinical scenarios. In those instances where evidence is lacking or equivocal, expert opinion may supplement the available evidence to recommend imaging or treatment. The American College of Radiology seeks and encourages collaboration with other organizations on the development of the ACR Appropriateness Criteria through society representation on expert panels. Participation by representatives from collaborating societies on the expert panel does not necessarily imply individual or society endorsement of the final document. Reprint requests to: publications@acr.org. Dr. Mintz helps to create the registry exam for radiology technologists for the ARRT; he is also the section editor for a journal. Dr. Subhas reports research support from Siemens Healthcare for CT techniques for metal artifact reduction. The other authors have no conflicts of interest related to the material discussed in this article.Disclaimer: The ACR Committee on Appropriateness Criteria and its expert panels have developed criteria for determining appropriate imaging examinations for diagnosis and treatment of specified medical condition(s). These criteria are intended to guide radiologists, radiation oncologists, and referring physicians in making decisions regarding radiologic imaging and treatment. Generally, the complexity and severity of a patient's clinical condition should dictate the selection of appropriate imaging procedures or treatments. Only those examinations generally used for evaluation of the patient's condition are ranked. Other imaging studies necessary to evaluate other co-existent diseases or other medical consequences of this condition are not considered in this document. The availability of equipment or personnel may influence the selection of appropriate imaging procedures or ...

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Section: Discussion Of Procedures By Variant Variant 1: Atraumatic Shmentioning

confidence: 99%

ACR Appropriateness Criteria® Shoulder Pain-Atraumatic

Small

Adler²,

Shah

et al. 2018

Journal of the American College of Radiology

View full text Add to dashboard Cite

show abstract

“…The former sequences enabled additional delineation of AC joint hypertrophy, subacromial-subdeltoid bursitis, tendinitis of the rotator cuff, hypertrophy of the coracoacromial ligament, and evaluation of the shape of the lateral acromion. The latter sequence provided a good contrast between the labrum, hyaline cartilage, the joint capsule, and joint fluid, and therefore allowed for a sufficient evaluation of these intra-articular structures [33,34].…”

Section: Discussionmentioning

confidence: 99%

MR arthrography of the shoulder: comparison of low-field (0,2 T) vs high-field (1.5 T) imaging

et al. 2000

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The objective of this study was to compare the image quality, sensitivity, specificity, and diagnostic accuracy of an open low-field MR system (0.2 T) with a standard high-field MR system (1.5 T) after arthrography of the shoulder. Thirty-eight patients either with suspected chronic instability (n = 12) or rotator cuff abnormalities (n = 26) were examined. Intra-articular injection of diluted Gd-DTPA was followed in randomized order either first by imaging on an open 0.2-T system or on a 1.5-T system. The image material was evaluated independently by two radiologists in a blinded fashion with respect to overall image quality and the detection of rotator cuff as well as capsular and labral abnormalities. Surgical correlation was available in 27 (71%) of 38 patients. For both systems, sensitivity and specificity for rotator cuff tears were 100% each, and for labrum pathologies, these values were 100 and 93%, respectively. The agreement for detection of labral pathologies between low-field and high-field examinations was good (kappa = 0.69, kappa = 0.61). For the detection of full-thickness tears of the rotator cuff, the agreement between the low-field and high-field MR examinations was very good and significant (kappa = 0.94, kappa = 1, p < 0.001). Overall image quality was rated good in 17 (45%) and fair in 21 (55%) of 38 cases on the 0.2-T MR system, and good in 32 (84%) and fair in 6 (16%) of 38 cases on the 1.5-T system. Motion artifacts were considered low in 24 (63%) and moderate in 14 (37%) of 38 cases for the 0.2-T system and low in 34 (89%) and moderate in 4 (11%) for 1.5-T system. Based on our results, low-field MR compares favorably to high-field MR in the detection of major abnormalities of the glenohumeral joint, at least when MR arthrography is used. Disadvantages are the duration of the examination and thus the risk of reduced image quality caused by motion artifacts.

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“…환측 팔을 몸통 옆으로 둔 바로 누운 자세(supine position)로 촬영하며, 관절을 중립위(neutral position) 혹은 약간의 외회전(external rotation) 자세로 둔 뒤, 가능하면 견관절이 중앙에 가깝게 위치하여 촬영하기를 권장한다. 자기공명관절조영술(MR arthrography)을 시행할 때는 외전-외회전(abduction and external rotation; ABER) 자세가 전하방 관절순(labrum) 파열 진단의 민감도를 높이고 회전 근개 파열(rotator cuff tear), 특히 관절면 부분 파열 진단의 정확도를 높일 수 있다( 9 10 11 12 13 ).…”

Section: 근골격계 자기공명영상 프로토콜의 최적화: 견관절 (Optimization Of Shoulder Mri Pro...unclassified

Optimization of MRI Protocol for the Musculoskeletal System

Lee

Jung

et al. 2020

J Korean Soc Radiol

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Magnetic resonance imaging (MRI) is an essential modality for the diagnosis of musculoskeletal system defects because of its higher soft-tissue contrast and spatial resolution. With the recent development of MRI-related technology, faster imaging and various image plane reconstructions are possible, enabling better assessment of three-dimensional musculoskeletal anatomy and lesions. Furthermore, the image quality, diagnostic accuracy, and acquisition time depend on the MRI protocol used. Moreover, the protocol affects the efficiency of the MRI scanner. Therefore, it is important for a radiologist to optimize the MRI protocol. In this review, we will provide guidance on patient positioning; selection of the radiofrequency coil, pulse sequences, and imaging planes; and control of MRI parameters to help optimize the MRI protocol for the six major joints of the musculoskeletal system.

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MR diagnosis of labral tears of the shoulder: value of T2*-weighted gradient-recalled echo images made in external rotation.

Cited by 23 publications

References 10 publications

ACR Appropriateness Criteria® Shoulder Pain-Atraumatic

ACR Appropriateness Criteria® Shoulder Pain-Atraumatic

MR arthrography of the shoulder: comparison of low-field (0,2 T) vs high-field (1.5 T) imaging

Optimization of MRI Protocol for the Musculoskeletal System

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