Chemical-shift MRI of pulmonary hamartomas: initial experience using a modified technique to assess nodule fat.

Hochhegger, Bruno; Marchiori, Edson; dos Reis, Daniela Quinto; Souza, Arthur Soares; Souza, Luciana Soares; Brum, Taua; Irion, Klaus L · AJR Am J Roentgenol · 2012

case_series · Level IV

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Abstract

The aim of this study was to show the usefulness of chemical-shift MRI in the diagnosis of intranodular fat in seven patients with pulmonary hamartomas and indeterminate CT findings. In the setting of chemical-shift MRI, the average nodule signal intensity index of pulmonary hamartomas was 45.3% (SD = 25.5%). The correlation between average nodule signal intensity and CT attenuation in Hounsfield units was -0.94. Chemical-shift MRI could be an important tool for the detection of fat in pulmonary hamartomas with inconclusive CT findings.

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