OBJECTIVE: To investigate the diagnostic accuracy of oblique axial intermediate weighting MR imaging in detecting partial thickness anterior cruciate ligament (ACL) bundle tears. MATERIALS AND METHODS: The study protocol was approved by the institutional ethics committee. Sixty-one subjects (43 male, 18 female; mean age 27.4 years; range 9 to 57 years) with clinically suspected ACL tear or meniscal tear between September 2009 and January 2011 were studied with MRI and arthroscopy. Detection of partial tear for the ACL as a whole and for each ACL bundle by protocol A (standard orthogonal sequences) and protocol B (standard orthogonal sequences plus oblique axial intermediate weighted imaging) was compared in a blinded fashion. Performance characteristics for protocol A and protocol B were compared using sensitivity, specificity, accuracy and ROC curves. A two-tailed p value of <0.05 indicated statistical significance. RESULTS: Fifteen (24.6%) normal, 15 (24.6%) partial and 31 complete tears were diagnosed by arthroscopy. Sensitivity, specificity and accuracy of protocol A for the diagnosis of partial tear of the ACL was 33%, 87% and 74%, while for protocol B the values were 87%, 87% and 87% respectively. The area under the curve (AUC) for the diagnosis of partial ACL tear and individual bundle tear was higher for protocol B, although this difference did not reach statistical significance (p > 0.05). CONCLUSION: The addition of oblique axial imaging to standard MR imaging improves diagnostic accuracy for detecting partial tears of the ACL as well as individual bundle tears of the ACL.
OBJECTIVE: To investigate the diagnostic accuracy of oblique axial intermediate weighting MR imaging in detecting partial thickness anterior cruciate ligament (ACL) bundle tears. MATERIALS AND METHODS: The study protocol was approved by the institutional ethics committee. Sixty-one subjects (43 male, 18 female; mean age 27.4 years; range 9 to 57 years) with clinically suspected ACL tear or meniscal tear between September 2009 and January 2011 were studied with MRI and arthroscopy. Detection of partial tear for the ACL as a whole and for each ACL bundle by protocol A (standard orthogonal sequences) and protocol B (standard orthogonal sequences plus oblique axial intermediate weighted imaging) was compared in a blinded fashion. Performance characteristics for protocol A and protocol B were compared using sensitivity, specificity, accuracy and ROC curves. A two-tailed p value of <0.05 indicated statistical significance. RESULTS: Fifteen (24.6%) normal, 15 (24.6%) partial and 31 complete tears were diagnosed by arthroscopy. Sensitivity, specificity and accuracy of protocol A for the diagnosis of partial tear of the ACL was 33%, 87% and 74%, while for protocol B the values were 87%, 87% and 87% respectively. The area under the curve (AUC) for the diagnosis of partial ACL tear and individual bundle tear was higher for protocol B, although this difference did not reach statistical significance (p > 0.05). CONCLUSION: The addition of oblique axial imaging to standard MR imaging improves diagnostic accuracy for detecting partial tears of the ACL as well as individual bundle tears of the ACL.
Authors: Pieter Van Dyck; Filip M Vanhoenacker; Jan L Gielen; Lieven Dossche; Jozef Van Gestel; Kristien Wouters; Paul M Parizel Journal: Skeletal Radiol Date: 2010-10-08 Impact factor: 2.199
Authors: Naveen Subhas; Amy Kao; Maxime Freire; Joshua M Polster; Nancy A Obuchowski; Carl S Winalski Journal: AJR Am J Roentgenol Date: 2011-08 Impact factor: 3.959
Authors: Pieter Van Dyck; Eline De Smet; Jan Veryser; Valérie Lambrecht; Jan L Gielen; Filip M Vanhoenacker; Lieven Dossche; Paul M Parizel Journal: Knee Surg Sports Traumatol Arthrosc Date: 2011-07-20 Impact factor: 4.342
Authors: Adam Przeworski; Zbigniew Adamiak; Michał Nowicki; Marta Mieszkowska; Angelika Tobolska; Joanna Głodek Journal: J Vet Res Date: 2021-05-16 Impact factor: 1.744