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Assessment of liver fat in an obese patient population using noncontrast CT fat percent index

      Abstract

      Objective

      To develop a simplified method to quantify liver fat using computed tomography (CT) fat % index (CTFPI) compared to liver spleen method (CTL/S, CTL−S).

      Methods

      Noncontrast CT of the liver was performed in 89 patients (overweight, obese, severely obese) to quantify fat, using the following: CTFPI=[(65−patient HU)/65]×100, normal live r=65 HU.

      Results

      There was a strong linear correlation between CTFPI and the standard method of assessing liver fat using CTL/S (r=−0.901), CTL−S (r=−0.911). Hepatic HU and CTFPI were significantly different in the severely obese group compared to other two groups (P<.05).

      Conclusion

      Significant correlation indicates equal diagnostic accuracy of the two methods in appropriately calibrated scanners.

      Keywords

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