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. 1995 Oct;24(7):495-8.
doi: 10.1007/BF00202144.

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

M J Tuite  1 , D R Yandow, A A De Smet, J F Orwin, F A Quintana
Affiliations

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

M J Tuite et al. Skeletal Radiol. 1995 Oct.

Abstract

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.

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