| Three-Tesla magnetic resonance imaging of the meniscus of the knee: What about equivocal errors? | |
| | |
MedLine Citation:
|
PMID: 20105094 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
BACKGROUND: The significance of borderline magnetic resonance (MR) findings that are equivocal for a tear of the knee meniscus remains uncertain. Given their higher signal-to-noise ratio (SNR) and greater spatial resolution, these equivocal meniscal tears could be expected to be less frequent using a 3.0T MR system. PURPOSE: To investigate the prevalence of equivocal meniscal tears using 3.0T MR, and to study their impact on MR accuracy compared with arthroscopy in the detection of meniscal tears. MATERIAL AND METHODS: The medical records of 100 patients who underwent 3.0T MR imaging and subsequent arthroscopy of the knee were retrospectively reviewed. Two observers interpreted MR images in consensus, and menisci were diagnosed as torn (abnormality on two or more images), equivocal for a tear (abnormality on one image), or intact, using arthroscopy as the standard of reference. The prevalence of equivocal meniscal tears was assessed, and MR accuracy was calculated as follows: first, considering both torn menisci and equivocal diagnoses as positive for a tear; and second, considering only torn menisci as positive for a tear. RESULTS: Evidence of meniscal tears on MR images was equivocal in 12 medial (12%) and three lateral (3%) menisci. Of these equivocal MR diagnoses, tears were found at arthroscopy in eight medial and one lateral meniscus. In our study, the specificity and positive predictive value increased for both the medial and lateral meniscus when only menisci with two or more abnormal images were considered to be torn: from 80% and 89% to 91% and 94% for the medial meniscus, and from 91% and 73% to 93% and 78% for the lateral meniscus, respectively. CONCLUSION: Subtle findings that are equivocal for a tear of the knee meniscus still make MR diagnosis difficult, even at 3.0T. We recommend that radiologists should rather be descriptive in reporting subtle or equivocal MR findings, alerting the clinician of possible meniscal tear. |
| | |
Authors:
|
Pieter Van Dyck; Filip M Vanhoenacker; Jan L Gielen; Lieven Dossche; Joost Weyler; Paul M Parizel |
Related Documents
:
|
15125124 - Computer-assisted knee arthroplasty versus a conventional jig-based technique. a random... 8775114 - The diagnostic accuracy of history, physical examination, and radiographs in the evalua... 9833124 - Value of posterior cruciate ligament index in the diagnosis of anterior cruciate ligame... 6316794 - Evaluation of meniscus tears of the knee by radionuclide imaging. 20437564 - Long-interval t2-weighted subtraction magnetic resonance imaging: a powerful new outcom... 17146654 - 1-[11c]-acetate pet imaging in head and neck cancer--a comparison with 18f-fdg-pet: imp... |
Publication Detail:
|
Type: Evaluation Studies; Journal Article |
Journal Detail:
|
Title: Acta radiologica (Stockholm, Sweden : 1987) Volume: 51 ISSN: 1600-0455 ISO Abbreviation: Acta Radiol Publication Date: 2010 Apr |
Date Detail:
|
Created Date: 2010-03-05 Completed Date: 2010-04-02 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 8706123 Medline TA: Acta Radiol Country: England |
Other Details:
|
Languages: eng Pagination: 296-301 Citation Subset: IM |
Affiliation:
|
Department of Radiology, University Hospital Antwerp and University of Antwerp, Antwerp (Edegem), Belgium. pieter.van.dyck@uza.be |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Adolescent Adult Aged Arthroscopy / methods, statistics & numerical data Diagnosis, Differential Diagnostic Errors / statistics & numerical data* Female Humans Knee Injuries / pathology Magnetic Resonance Imaging / methods*, statistics & numerical data Magnetics Male Menisci, Tibial / injuries*, pathology* Middle Aged Observer Variation Predictive Value of Tests Reproducibility of Results Retrospective Studies Sensitivity and Specificity Young Adult |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Prediction of pulmonary embolism outcome and severity by computed tomography.
Next Document: A novel bone conduction implant (BCI): Engineering aspects and pre-clinical studies.