Journal article
Value of Sagittal Fat-Suppressed Proton-Density Fast-Spin-Echo of the Knee Joint as a Limited Protocol in Evaluating Internal Knee Derangements
Journal of computer assisted tomography, Vol.35(5), pp.653-661
09/01/2011
DOI: 10.1097/RCT.0b013e3182251016
PMID: 21926865
Abstract
Purpose: The aim of the study was to determine the accuracy and observer agreement in the assessment of internal knee derangement using sagittal fat-suppressed proton-density fast-spin-echo (FS PD-FSE) compared with combined sagittal T1-weighted spin-echo, dual-proton-density, and T2-weighted spin-echo sequences and with arthroscopy.
Methods: One hundred eighteen patients undergoing routine knee magnetic resonance (MR) imaging had additional imaging with sagittal FS PD-FSE sequences. Menisci, cruciate ligaments, extensor tendons (ETs), bone marrow, osteoarthritic changes, soft tissue edema, joint effusion, and incidental tumors were analyzed. Magnetic resonance images were independently reviewed by 2 radiologists. Fifty patients underwent knee arthroscopy. Statistical analysis compared both imaging protocols with each other and with arthroscopy. Intrareader and interreader agreements were evaluated using kappa analysis. Both protocols were compared with arthroscopy.
Results: Intrareader agreement was very high except for readings of the posterior cruciate ligament, ETs, and cartilage. Intrareader agreement did not differ significantly between the 2 readers except for ETs, bone marrow, and cartilage. Interreader percent agreements were high using both protocols and were not significantly different between the 2 readers except for posterior cruciate ligament. Compared with arthroscopy, both methods showed almost identical results regarding sensitivity, specificity, positive predictive value, and negative predictive value, except for cartilage where FS PD-FSE had increased sensitivity, whereas the combined protocol had increased specificity.
Conclusions: Sagittal FS PD-FSE is comparable to our regular MR protocol in assessing internal knee derangement with an overall agreement of at least 93% on all sites except cartilage. It was also comparable to arthroscopy in assessing the cruciate ligaments and menisci, but had a low specificity for cartilaginous derangements. It can replace our 3 sagittal series comprising T1- and T2-weighted and proton-density-spin-echo sequences, hence saving time and cost.
Details
- Title: Subtitle
- Value of Sagittal Fat-Suppressed Proton-Density Fast-Spin-Echo of the Knee Joint as a Limited Protocol in Evaluating Internal Knee Derangements
- Creators
- Nabil J. Khoury - American University of BeirutZiyad Mahfoud - Weill Cornell Med Coll, Dept Publ Hlth, Doha, QatarKarim Z. Masrouha - Amer Univ Beirut, Med Ctr, Div Orthopaed Surg, Dept Surg, Beirut 11072020, LebanonRayan Elkattah - Amer Univ Beirut, Med Ctr, Dept Diagnost Radiol, Beirut 11072020, LebanonToni Assaad - Amer Univ Beirut, Med Ctr, Dept Diagnost Radiol, Beirut 11072020, LebanonAbeer Abdallah - Amer Univ Beirut, Med Ctr, Dept Diagnost Radiol, Beirut 11072020, LebanonMukbil H. Hourani - Amer Univ Beirut, Med Ctr, Dept Diagnost Radiol, Beirut 11072020, Lebanon
- Resource Type
- Journal article
- Publication Details
- Journal of computer assisted tomography, Vol.35(5), pp.653-661
- Publisher
- Lippincott Williams & Wilkins
- DOI
- 10.1097/RCT.0b013e3182251016
- PMID
- 21926865
- ISSN
- 0363-8715
- eISSN
- 1532-3145
- Number of pages
- 9
- Language
- English
- Date published
- 09/01/2011
- Academic Unit
- Radiology
- Record Identifier
- 9984697637402771
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