Abstract
Objectives
To estimate diagnostic accuracy and interobserver agreement of extremity-dedicated
low-field magnetic resonance imaging (lfMRI) for meniscal tears, anterior cruciate
ligament (ACL) tears and knee fractures.
Methods
We enrolled 62 patients with acute knee trauma and 19 patients with suspected knee
fracture. Arthroscopy/Computed tomography was regarded the gold standard for cruciate
ligament and meniscal tears/fractures.
Results
Arthroscopy showed 39 meniscal tears. Sensitivity/Specificity of lfMRI was 95.8%/97.4%
(reader 1)/100%/100% (reader 2) for medial and 93.3%/100% (reader 1)/93.3%/93.6% (reader
2) for lateral meniscal tears. Sensitivity/Specificity was 100% for ACL tears and
fractures. Interobserver agreement was very good.
Conclusion
lfMRI showed reproducible high sensitivity and specificity for the diagnosis of the
acutely injured knee.
Keywords
To read this article in full you will need to make a payment
Purchase one-time access:
Academic & Personal: 24 hour online accessCorporate R&D Professionals: 24 hour online accessOne-time access price info
- For academic or personal research use, select 'Academic and Personal'
- For corporate R&D use, select 'Corporate R&D Professionals'
Subscribe:
Subscribe to Clinical ImagingAlready a print subscriber? Claim online access
Already an online subscriber? Sign in
Register: Create an account
Institutional Access: Sign in to ScienceDirect
References
- Utilization of low-field MR scanners.Magn Reson Med Sci. 2004; 3: 27-38
- Low-field musculoskeletal MRI.J Magn Reson Imaging. 2007; 25: 234-244
- ([accesed at 05/01/2014. In])
- ([accessed 04/21/2015])
- Emerging MRI technologies for imaging musculoskeletal disorders under loading stress, 2011. Technical Brief No. 7.in: (Prepared by the Tufts Evidence-based Practice Center under Contract No. HHSA 290-2007-100551.) AHRQ Publication No. 11-EHC024-EF. Agency for Healthcare Research and Quality, Rockville, MD2011 ([Available at: www.effectivehealthcare.ahrq.gov/reports/final.cfm])
- A prototype RF dosimeter for independent measurement of the average specific absorption rate (SAR) during MRI.J Magn Reson Imaging. 2007; 26: 1296-1302
- ACR guidance document on MR safe practices: 2013.J Magn Reson Imaging. 2013; 37: 501-530
- Effect of Field Strength on MR Images: Comparison of the Same Subject at 0.5, 1.0, and 1.5 T 1.Radiographics. 1999; 19: 1057-1067
- Fat suppression in MR imaging: techniques and pitfalls.Radiographics. 1999; 19: 373-382
- How I diagnose meniscal tears on knee MRI.AJR Am J Roentgenol. 2012; 199: 481-499
- Magnetic resonance imaging of the knee.Semin Ultrasound CT MR. 1990; 11: 307-326
- Bucket-handle meniscal tears of the knee: sensitivity and specificity of MRI signs.Skeletal Radiol. 2003; 32: 266-272
- The flipped meniscus sign.Skeletal Radiol. 1993; 22: 273-277
- Sagittal MR images of the knee: a low-signal band parallel to the posterior cruciate ligament caused by a displaced bucket-handle tear.AJR Am J Roentgenol. 1991; 156: 117-119
- Probable inference, the law of succession, and statistical inference.J Am Stat Assoc. 1927; 22: 209-212
- R: A language and environment for statistical computing. R Foundation for Statistical Computing, Vienna, Austria.(URL http://www.R-project.org)in: 3-900051-07-02012
- The measurement of observer agreement for categorical data.Biometrics. 1977; 33: 159-174
- Arthroscopic and low-field MRI (0.25 T) evaluation of meniscus and ligaments of painful knee.J Clin Imaging Sci. 2012; 2https://doi.org/10.4103/2156-7514.96539
- Anterior cruciate ligament tear: prospective evaluation of diagnostic accuracy of middle-and high-field-strength MR imaging at 1.5 and 0.5 T.Radiology. 1995; 197: 826-830
- A comparison of dedicated 1.0 T extremity MRI vs large-bore 1.5 T MRI for semiquantitative whole organ assessment of osteoarthritis: the MOST study.Osteoarthritis Cartilage. 2010; 18: 168-174
- Is dedicated extremity 1.5-T MRI equivalent to standard large-bore 1.5-T MRI for foot and knee examinations?.AJR Am J Roentgenol. 2014; 203: 1293-1302
- Effect of field strength on susceptibility artifacts in magnetic resonance imaging.Comp Med Imaging Graph. 1990; 14: 409-413
- Quantitative analysis of magnetic resonance imaging susceptibility artifacts caused by neurosurgical biomaterials: comparison of 0.5, 1.5, and 3.0 Tesla magnetic fields.Neurol Med Chir (Tokyo). 2005; 45: 395-399
- Solution of Laplace equation on non axially symmetrical volumes.IEEE Trans Appl Supercond. 2006; 16: 1815-1818
- MR imaging of meniscal tears at low-field (0.35 T) and high-field (1.5 T) MR units.Tani Girisim Radyol. 2004; 10: 316-319
- MR imaging of the knee at 0.2 and 1.5 T: correlation with surgery.AJR Am J Roentgenol. 2000; 174: 1093-1097
- Accuracy of imaging the menisci on an in-office, dedicated, magnetic resonance imaging extremity system.Am J Sports Med. 1996; 25: 382-388
- Diagnostic performance of low field MRI in acute knee injuries.Magn Reson Imaging. 1994; 12: 1155-1160
- Comparison of low-field (0.2 Tesla) and high-field (1.5 Tesla) magnetic resonance imaging of the knee joint.Arch Orthop Trauma Surg. 1995; 114: 281-286
- 0.2-Tesla magnetic resonance imaging of internal lesions of the knee joint: a prospective arthroscopically controlled clinical study.Knee Surg Sports Traumatol Arthrosc. 1999; 7: 37-41
- The impact of field strength on image quality in MRI.. 1996; 6: 57-62
- Sources of variation and bias in studies of diagnostic accuracy.. 2004; 140: 189-203
- Affirmative actions: can the discriminant accuracy of a test be determined in the face of selection bias?.Med Decis Making. 1991; 11: 48-56
- Off Bayes: effect of verification bias on posterior probabilities calculated using Bayes' theorem.Med Decis Making. 1992; 12: 22-30
Article info
Publication history
Published online: May 26, 2015
Accepted:
May 13,
2015
Received in revised form:
April 28,
2015
Received:
February 27,
2015
Footnotes
☆Conflict of interest: We do not have a conflict of interest to declare.
Identification
Copyright
© 2015 Elsevier Inc. Published by Elsevier Inc. All rights reserved.
