Abstract：
OBJECTIVE:To evaluate high-resolution MRI of the proximal zone of the lunotriquetral ligament (LTL) using a microscopy surface coil with a 1.5 T scanner. DESIGN AND SUBJECTS:The proximal zone of the LTL was reviewed in 90 subjects (23 asymptomatic normal volunteers and 67 patients with suspicion of triangular fibrocartilage complex injury) with high-resolution MRI using a 47-mm microscopy surface coil. High-resolution MR images were obtained with gradient recalled echo (GRE) T2*-weighted sequence and short tau inversion recovery imaging, with a 1- to 1.5-mm slice thickness, a 50-mm field of view, an imaging matrix of 140-224x512 using zero fill interpolation, and 3-4 excitations. As a qualitative analysis, the LTL was classified in shape and signal intensity. RESULTS:The triangle-shaped low-signal-intensity LTL was identified in 77 of 90 subjects (85.6%) on GRE images. The triangle was classified as regular (41.1%), broad-based (20.0%), narrow-based (6.7%), or asymmetrical (17.8%). The bar-shaped ligament was seen in one patient, and unclassified ligaments were seen in 12 patients. All volunteers showed triangle-shaped LTL. The MR signal intensity of the proximal zone in the LTL was characterized as homogeneously low intensity (type 1; 33.8%), linear intermediate or high signal intensity traversing the distal surface of the LTL (type 2; 45.5%), and linear intermediate or high intensity traversing both distal and proximal surfaces of LTL (type 3; 20.8%). CONCLUSION:The proximal zone of the LTL showed a broad spectrum of normal variations in shape and signal intensity on high-resolution MR images with a microscopy coil.
journal_name
Skeletal Radioljournal_title
Skeletal radiologyauthors
Yoshioka H,Tanaka T,Ueno T,Shindo M,Carrino JA,Lang P,Winalski CSdoi
10.1007/s00256-005-0070-4keywords:
subject
Has Abstractpub_date
2006-05-01 00:00:00pages
288-94issue
5eissn
0364-2348issn
1432-2161journal_volume
35pub_type
杂志文章abstract：OBJECTIVE:The purpose of this study was to clarify the efficacy of stress radiography (stress X-P), ultrasonography (US), and magnetic resonance (MR) imaging in the detection of the anterior talofibular ligament (ATFL) injury. METHODS:Thirty-four patients with ankle sprain were involved. In all patients, Stress X-P, U...
journal_title：Skeletal radiology
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journal_title：Skeletal radiology
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journal_title：Skeletal radiology
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journal_title：Skeletal radiology
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journal_title：Skeletal radiology
pub_type： 杂志文章
doi：10.1007/BF00360494
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journal_title：Skeletal radiology
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pub_type： 杂志文章
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