Precision of the Hologic DXA in the Assessment of Visceral Adipose Tissue

Goldberg, Elijah K.; Fung, Ellen B.

doi:10.1016/j.jocd.2019.03.005

Cited by 29 publications

(13 citation statements)

References 25 publications

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“…These problems may occur in contemporary cohort studies. Moreover, another previous study about the precision of the Hologic DXA in the assessment of VAT reported that VAT measurement by Hologic DXA displays a satisfactory level of precision on individuals with a BMI of>18.5 kg/m 2 25 . However, our study showed that VAT measurements for subjects with larger VAT measured by MRI presented poor validity.…”

Section: Discussionmentioning

confidence: 92%

“…Another validation study that assessed VAT in the Indian population using DXA versus MRI as the usual method showed that DXA measurements for abdominal fat were suitable for use [24]. A study reported that VAT measurement by DXA displayed a satisfactory level of precision in individuals with a body mass index (BMI) of > 18.5 kg/ m 2 [25]. However, previous studies of obese people showed that DXA assessments for VAT were not reliable enough.…”

Section: Discussionmentioning

confidence: 99%

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Comparison between DXA and MRI for the Visceral Fat Assessment in Athletes

et al. 2022

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The use of dual-energy X-ray absorptiometry (DXA) may be invalid for assessing athletes with larger bodies, larger lean body mass, and thicker trunks. This study compared the athletes' visceral adipose tissue (VAT) assessed using DXA and magnetic resonance imaging (MRI). Eighty-two Japanese male collegiate athletes from 18 sports participated in this study. VAT was assessed using the dual-energy scan that coincided with the 4th lumbar vertebra. The sum of eight magnetic resonance slices corresponding to the region of the dual-energy scan was used for comparison. The VAT volume was higher with the dual-energy scan than with MRI (difference: 35 cm3, p<0.01). A significant correlation was noted between the volumes measured using both modalities (r=0.88, p<0.01). Magnetic resonance-derived volumes less than 600 cm3 showed a stronger significant correlation with dual-energy-derived volumes. However, magnetic resonance-derived VAT volumes exceeding 600 cm3 were not significantly correlated with dual-energy-derived volumes. In conclusion, VAT volumes derived from DXA were larger and significantly correlated with those derived from MRI across a wide range of values. Methods using DXA for assessing the visceral fat volume may require adjustment to estimate abdominal visceral fat volume in athletes, with care taken when using such methods for heavyweight athletes.

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Section: Discussionmentioning

confidence: 92%

Section: Discussionmentioning

confidence: 99%

Comparison between DXA and MRI for the Visceral Fat Assessment in Athletes

et al. 2022

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“…Both methods allow the volumetric quantification of SAT in the extremities and to distinguish SAT from visceral adipose tissue in the trunk (21, 22). DXA may also differentiate visceral from subcutaneous fat in the abdominal region, although with lower precision than MRI and CT (23). Ultrasonography allows measuring the thickness of the SAT but is less reliable and precise than MRI and CT (24, 25).…”

Section: Introductionmentioning

confidence: 99%

Greater Reduction in Abdominal Than in Upper Arms Subcutaneous Fat in 10- to 12-Year-Old Tennis Players: A Volumetric MRI Study

et al. 2019

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Background: Little is known about the impact of long term participation in sports and subcutaneous fat volume in children. This study aimed at determining whether tennis participation is associated with lower subcutaneous adipose tissue volume (SATv) in the abdominal and upper extremities in children. Methods: Magnetic resonance imaging (MRI) was used to determine the SATv stored in the abdominal region and upper arms in seven tennis players and seven inactive children matched by height and age (147 cm and 10.9 years). All participants were in Tanner stage 1 or 2. Results: Playing tennis was associated with 48% ( P = 0.001) lower abdominal SATv and 17–18% ( P > 0.05) lower upper arms SATv compared to controls. The ratio between abdominal/upper arms SATv was larger in the controls vs. tennis players (69% P = 0.001). The SATv was similar in the dominant and non-dominant arm within each group. Conclusion: Playing tennis during childhood is associated with reduced SATv in the abdominal region and a more favorable regional distribution of fat. Despite the large amount of contractile activity of the playing (dominant) arm, there was no indication of between-arms differences in SATv.

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“…Whole body scans were acquired using instrument‐specific software and procedures, and scans were analysed using Apex software (version 5.5.3). Multiple studies have reported that DXA provides reliable and valid estimates of visceral fat in youth and adults 15–17 …”

Section: Methodsmentioning

confidence: 99%

Visceral fat and arterial stiffness in youth with healthy weight, obesity, and type 2 diabetes

et al. 2021

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Summary Background and objectives Visceral fat is associated with increased cardiovascular risk in adults, but studies in youth are limited. We assessed associations between visceral fat and arterial stiffness in youth with healthy weight, obesity and type 2 diabetes and determined whether relationships were independent of clinical estimates of body fatness. Methods This cross‐sectional sample included youth ages 10–23 years (67% female, 56% non‐black) with healthy weight (body mass index [BMI] = 5th–85th percentile, n = 236), obesity (BMI ≥ 95th percentile, n = 224) and type 2 diabetes (BMI ≥ 95th percentile, n = 145). Visceral fat was assessed via dual‐energy X‐ray absorptiometry. Carotid‐femoral pulse wave velocity (PWV) was assessed via applanation tonometry. Obesity and type 2 diabetes groups were combined for final analyses. Analyses accounted for age, sex, ancestry and mean arterial pressure. Results Visceral fat and PWV were greater in youth with obesity versus healthy weight (p < 0.001). In youth with obesity, but not healthy weight, visceral fat was positively associated with PWV (p < 0.001) and was predictive of PWV beyond BMI and waist circumference. Conclusions Visceral fat likely contributes to subclinical cardiovascular complications in youth. Since cardiovascular health tracks from adolescence to adulthood, longitudinal studies in youth with obesity are required to define the role of visceral fat in lifelong cardiovascular disease risk.

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Precision of the Hologic DXA in the Assessment of Visceral Adipose Tissue

Cited by 29 publications

References 25 publications

Comparison between DXA and MRI for the Visceral Fat Assessment in Athletes

Comparison between DXA and MRI for the Visceral Fat Assessment in Athletes

Greater Reduction in Abdominal Than in Upper Arms Subcutaneous Fat in 10- to 12-Year-Old Tennis Players: A Volumetric MRI Study

Visceral fat and arterial stiffness in youth with healthy weight, obesity, and type 2 diabetes

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