Key result
A <-33 HU CT threshold detects pulmonary hamartoma fat with ~95% accuracy, outperforming -40 HU.
Why the study?
Does a revised density threshold (<-33 HU) on multidetector computed tomography improve the accuracy of fat detection in pulmonary hamartomas compared to a -40 HU threshold?
Population
55 patients who had received a histologically confirmed diagnosis of pulmonary hamartomas and had undergone…
Comparison
64-slice thoracic multidetector computed… vs Histologic analysis and MDCT using a standard…
Design
Cohort
Authors
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May support <-33 HU threshold for fat detection in pulmonary hamartomas on CT; leaves open prospective validation before practice change.
Observational (n=55)
Does a revised density threshold (<-33 HU) on multidetector computed tomography improve the accuracy of fat detection in pulmonary hamartomas compared to a -40 HU threshold?
Absolute Event Rate: 95.3% vs 83.7%
Adopting a density threshold of <-33 HU on multidetector computed tomography significantly improves the accuracy and specificity of detecting fat in pulmonary hamartomas.
Hochhegger et al. (2015) conducted an observational in Pulmonary hamartomas (n=55). CT density threshold of <-33 HU for fat detection vs. CT density threshold of -40 HU was evaluated on Accuracy of fat detection. A CT density threshold of <-33 HU for fat detection in pulmonary hamartomas yielded 95.3% accuracy, 100% sensitivity, and 96.3% specificity, improving upon the -40 HU threshold.
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