Effect of field of view on MR diagnosis of rotator cuff tears.

Autor: Tuite, Michael, Yandow, Donald, Smet, Arthur, Orwin, John, Quintana, Fernando, Tuite, M J, Yandow, D R, De Smet, A A, Orwin, J F, Quintana, F A
Zdroj: Skeletal Radiology; Oct1995, Vol. 24 Issue 7, p495-498, 4p
Abstrakt: Purpose: To determine the effect of decreasing the field of view (FOV) on the accuracy of MR for diagnosing rotator cuff tears.Material and Methods: One hundred shoulder MR scans with surgical correlation were evaluated for the presence or absence of a cuff tear. The sensitivity and specificity of MR relative to the surgical results were determined for the 59 patients scanned with a 24-cm FOV, and the 41 patients scanned with an 18-cm FOV. All other imaging parameters including acquisition time were identical. The sensitivity and specificity of the two groups were compared using a t-test.Results: The specificity of MR for diagnosing a rotator cuff tear improved from 0.65 for the 24-cm FOV group to 0.89 for the 18-cm FOV group (P = 0.04). The sensitivity changed from 0.91 to 0.96 (P = 0.25).Conclusion: Reducing the FOV from 24 cm to 18 cm results in a statistically significant improvement in specificity of MR for diagnosing rotator cuff tears. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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