Quantification of visceral adipose tissue by computed tomography and magnetic resonance imaging: reproducibility and accuracy

Radiologia brasileira
Lorenzo Carlo PescatoriLuca Maria Sconfienza

Abstract

To evaluate the feasibility of quantifying visceral adipose tissue (VAT) on computed tomography (CT) and magnetic resonance imaging (MRI) scans, using freeware, as well as calculating intraobserver and interobserver reproducibility. We quantified VAT in patients who underwent abdominal CT and MRI at our institution between 2010 and 2015, with a maximum of three months between the two examinations. A slice acquired at the level of the umbilicus was selected. Segmentation was performed with the region growing algorithm of the freeware employed. Intraobserver and interobserver reproducibility were evaluated, as was the accuracy of MRI in relation to that of CT. Thirty-one patients (14 males and 17 females; mean age of 57 ± 15 years) underwent CT and MRI (mean interval between the examinations, 28 ± 12 days). The interobserver reproducibility was 82% for CT (bias = 1.52 cm2; p = 0.488), 86% for T1-weighted MRI (bias = -4.36 cm2; p = 0.006), and 88% for T2-weighted MRI (bias = -0.52 cm2; p = 0.735). The intraobserver reproducibility was 90% for CT (bias = 0.14 cm2; p = 0.912), 92% for T1-weighted MRI (bias = -3,4 cm2; p = 0.035), and 90% for T2-weighted MRI (bias = -0.30 cm2; p = 0.887). The reproducibility between T1-weighted MRI a...Continue Reading

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Citations

Dec 14, 2019·European Radiology·Domenico AlbanoLuca Maria Sconfienza
Jul 4, 2020·The British Journal of Nutrition·Janice L Atkins, S Goya Wannamathee
Feb 20, 2020·Surgical Endoscopy·Zi Qin NgMary Theophilus
Feb 26, 2019·Radiologia brasileira·Michael A Ohliger, Antonio C Westphalen
Dec 29, 2020·Obesity Research & Clinical Practice·Federica PediconiFrancesco Sardanelli
Feb 24, 2020·Computer Methods and Programs in Biomedicine·Amélie PoilliotNiels Hammer
Apr 20, 2021·Magnetic Resonance Imaging·Khaoula BouaziziNadjia Kachenoura
Jul 3, 2021·International Journal of Obesity : Journal of the International Association for the Study of Obesity·Salomé KuntzAnne Lejay
Oct 19, 2021·Frontiers in Nutrition·Kacper MarunowskiMaciej Piskunowicz

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Methods Mentioned

BETA
X-ray

Software Mentioned

OsiriX
ImageJ
AdipoQuant
Rapidia

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