Chemical-shift MRI versus washout CT for characterizing adrenal incidentalomas

To compare the accuracy of computed tomography (CT) and magnetic resonance imaging (MRI) in characterizing adrenal masses. A total of 45 adrenal masses in 38 patients underwent unenhanced CT, enhanced CT, and chemical-shift MRI. Sensitivities and accuracies using the lesion attenuation values, absol...

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Bibliographic Details
Published in:Clinical imaging 2016-07, Vol.40 (4), p.780-787
Main Authors: Warda, Mohammad H. Abo, Shehata, Samar M., Zaiton, Fatma
Format: Article
Language:English
Subjects:
Abdomen
Accuracy
Adrenal Gland Neoplasms - diagnostic imaging
Adrenal Glands - diagnostic imaging
Adrenal masses
Adult
Aged
Attenuation
Chemical-shift MRI
Computer aided tomography
Contrast Media
Female
Humans
Iohexol
Lesions
Lipid-poor adenoma
Lipids
Magnetic resonance imaging
Magnetic Resonance Imaging - methods
Male
Mathematical analysis
Medical imaging
Metastasis
Middle Aged
NMR
Nuclear magnetic resonance
Prospective Studies
Radiographic Image Enhancement
Reproducibility of Results
Sensitivity and Specificity
Spleen
Tomography
Tomography, X-Ray Computed - methods
Tumors
Washout CT
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Summary:To compare the accuracy of computed tomography (CT) and magnetic resonance imaging (MRI) in characterizing adrenal masses. A total of 45 adrenal masses in 38 patients underwent unenhanced CT, enhanced CT, and chemical-shift MRI. Sensitivities and accuracies using the lesion attenuation values, absolute or relative percentage washout for CT, and adrenal-to-spleen ratio or signal intensity index for MRI were calculated. Follow-up or histopathology was used as standard reference. A total of 15 lipid-rich adenomas, 6 lipid-poor adenomas, and 24 nonadenomas were obtained. The sensitivities for adenoma on MRI versus CT were 81% and 95%, respectively. The specificities were 100%. CT is superior to MRI in characterizing adenomas.
ISSN:0899-7071
1873-4499
DOI:10.1016/j.clinimag.2016.02.006