Height was measured to the nearest 0.1 cm using a wall-mounted stadiometer (SECA, Chino, CA). Weight was measured to the nearest 0.1 kg using a digital scale (Tanita, Arlington Heights, Illinois). GE iDXA (GE, Fairfield, CT) was used to assess fat-free mass, fat mass, lean mass, percent body fat, and visceral adipose tissue [15 (link)–17 (link)]. Visceral fat was calculated using the CoreScan application of the GE iDXA [18 (link), 19 (link)]. Calibration of the DXA scan took place at the beginning of each testing day using a manufacturer-provided calibration block. Scans were analyzed using Encore software version 17.
Ge idxa
Manufactured by GE Healthcare
Sourced in United States
The GE iDXA is a dual-energy X-ray absorptiometry (DXA) system designed for body composition analysis. It measures bone mineral density, bone mineral content, and soft tissue composition, including fat and lean mass.
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Lab products found in correlation
12 protocols using ge idxa
1
Body Composition Assessment Protocol
2
Body Composition Assessment via DXA Scan
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Body weight and height were measured for all participants at the beginning of each session. Weight was measured using a digital scale (Seca, Hamburg, Germany) accurate to ±0.1 kg with participants dressed in athletic shorts and a t-shirt. Height was measured by a stadiometer accurate to ±0.1 cm (Seca, Hamburg, Germany). Body mass index (BMI) was calculated as weight (in kilograms) divided by the square of height (in meters). A GE iDXA (GE, Fairfield, CT, USA) was used to assess fat-free mass, fat mass, lean mass, percent body fat, and visceral adipose tissue [32 (link),33 ,34 (link)]. Visceral fat was calculated using the CoreScan application of the GE iDXA [35 (link),36 (link)]. Calibration of the DXA scan took place at the beginning of each testing day using a manufacturer-provided calibration block. Scans were analyzed using Encore software version 17.
3
Effect of Overweight on Body Composition in Healthy Women
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Healthy women with overweight or obesity were recruited according to the following inclusion criteria: 18–40 years of age, BMI 27–38 kg/m2, fasting plasma glucose ≤110 mg/dL, blood pressure ≤140/90 mmHg, absence of major organ disease, normal screening urinary and blood laboratory tests, weight stable for ≥3 months, and no significant changes in diet or physical activity in the previous month. Exclusion criteria consisted of a history of diagnosed diabetes, chronic use of medications with potential metabolic effects (glucocorticoids, adrenergic agents, or thiazolidinediones), or use of medications or procedures that cause weight gain or loss. Subjects with HIV, hepatitis B, or hepatitis C were excluded, as were pregnant or breastfeeding women. The institutional review board of Pennington Biomedical Research Center approved all procedures, and all subjects gave written informed consent.
Anthropometric characteristics (height, weight, and waist-to-hip ratio [WHR]) were taken at the beginning of the study. Following the 8-week labeling period, anthropometric measures were repeated, body composition was measured by dual-energy X-ray absorptiometry using the whole-body scanner GE iDXA, and AT samples were collected.
Anthropometric characteristics (height, weight, and waist-to-hip ratio [WHR]) were taken at the beginning of the study. Following the 8-week labeling period, anthropometric measures were repeated, body composition was measured by dual-energy X-ray absorptiometry using the whole-body scanner GE iDXA, and AT samples were collected.
4
Assessing Obesity with DEXA Scans
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Participants reported to the CRF at ∼0800 h, following a 10-hour overnight fast. Following assessment of height and weight, dual energy x-ray absorptiometry scanning (GE iDXA; GE Healthcare, Chicago, IL) was used to determine whole-body and regional fat mass, lean mass, and visceral adipose tissue (VAT). VAT was obtained by identifying the android/gynoid region and the horizontal plane by the area between the pelvis and the rib cage, with its vertical limits being the inner abdominal muscle wall. VAT is computed by subtracting subcutaneous fat from the total android fat mass in the android region. Obesity was defined by body mass index (BMI) ≥30 kg ⋅ m−2.
5
Anthropometric Measurements and Body Composition
6
Body Composition Changes in Weight Loss
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Weight loss was accessed in 5 intervals: 1: pre-surgery to baseline, 2: first half of intervention: baseline intervention to mid-intervention, 3: Second half of intervention: mid intervention to post intervention, 4: Intervention = baseline to post intervention, 5: Total: pre-surgery to post intervention. Body mass index (BMI) was calculated.
Body composition was assessed at pre and post intervention in both groups. Briefly, whole body fat mas (FM) and fat free mass (FFM) were determined by dual-energy x-ray absorptiometry (DXA) utilizing a GE iDXA (GE Healthcare). Total (AAT), superficial (SSAT), deep (SDAT), visceral (VAT) and subcutaneous (SAT) abdominal adipose tissue were quantified by computed tomography (CT) using SliceOmatic image analysis software (TomoVision, Montreal, CA).
Body composition was assessed at pre and post intervention in both groups. Briefly, whole body fat mas (FM) and fat free mass (FFM) were determined by dual-energy x-ray absorptiometry (DXA) utilizing a GE iDXA (GE Healthcare). Total (AAT), superficial (SSAT), deep (SDAT), visceral (VAT) and subcutaneous (SAT) abdominal adipose tissue were quantified by computed tomography (CT) using SliceOmatic image analysis software (TomoVision, Montreal, CA).
7
Clinical Measurements and Body Composition
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All participants arrived at the National Institute for Health Research Cambridge Clinical Research Facility (CRF) in the afternoon having eaten lunch. On arrival and after the consent process, the participants underwent clinical measurements including blood pressure, temperature, and electrocardiogram. Height was measured on a stadiometer and recorded to the nearest millimeter (SECA electronic stadiometer) and weight was measured on electronic scales to the nearest gram (Kern & Sohn GmbH).
The participants then completed a whole body DXA assessment for bone mass (BM) and body composition [FM and lean soft tissue (LST)] (GE iDXA, analyzed in version 16, enhanced mode).
The participants then completed a whole body DXA assessment for bone mass (BM) and body composition [FM and lean soft tissue (LST)] (GE iDXA, analyzed in version 16, enhanced mode).
8
Pediatric Anthropometric Measurements
9
Anthropometric Measurements and Body Composition
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Body mass and height were assessed at the beginning of each condition. Participants were assessed with their shoes removed and wearing a t-shirt and athletic shorts. Body mass was assessed using a digital scale accurate to ±0.1 kg (Seca, Hamburg, Germany). Height was assessed using a stadiometer (Seca, Hamburg, Germany) accurate to ±0.1 cm. Body composition was assessed on the initial visit using a GE iDXA (GE, Fairfield, CT, USA) [28 (link)]. The DXA was calibrated at the beginning of each assessment day per the manufacturer’s instructions. Encore version 17 was used to analyze the scans.
10
Dual Energy X-Ray Absorptiometry Scan
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