A Comparison of Computer Vision Based Approach vs. Dual Energy X-ray Absorptiometry Scan to Measure Body Fat Percentage

Study Overview
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Brief Summary
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This study is being done to test whether a HealthReel computer vision-based software application can estimate body fat percentage with equivalent accuracy to a whole body dual energy x-ray absorptiometry scan.

Detailed Description
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This study is being done to test whether a computer vision-based software application can estimate body fat percentage with equivalent accuracy to a whole body dual energy x-ray absorptiometry scan. The dual energy x-ray absorptiometry scan involves lying on a machine for about 6-10 minutes. It is an open design. The study will also examine whether waist circumference measurement improves the accuracy of the body fat percentage estimate by the computer vision-based application.A total of approximately 492 subjects are planned to take part in this study at one study center.

Official Title
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A Comparison of Computer Vision Based Approach vs. Dual Energy X-ray Absorptiometry Scan to Measure Body Fat

Conditions
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Health Behavior

Intervention / Treatment
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* Diagnostic Test: Computer based vision application by video
* Radiation: whole body dual energy x-ray absorptiometry scan


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Have the ability to provide informed consent before any trial-related activities Male or female, age > = 18 at time of signing informed consent Have access to and ability to use a smart phone to take a 15 second video from their home Exclusion Criteria: Pregnancy at the time of screening Known osteoporosis with a T-score of <-2.5 at hip or spine or pathological fracture of spine Cirrhosis of the liver, or presence of ascites

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 100 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Computer Based Vision<br>A 15 second long video will be obtained at the research site using a smart phone or tablet. Then subjects will undergo a whole body dual energy x-ray absorptiometry scan . Then the subject will go home and take a second 15 second long video. The videos will then be analyzed by computer based vision application and the body fat percentage measured by dual energy x-ray absorptiometry scan will be compared. | Diagnostic Test: Computer based vision application by video<br>* patients will be tested by computer based analysis of a video as well as by dexa scan.<br>Radiation: whole body dual energy x-ray absorptiometry scan<br>* subjects will receive a whole body dual energy x-ray absorptiometry scan to measure their body fat percentage<br>* Other names: Dexa scan;|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| variance in body fat percentage between computervision application and dexa scan | Variance between body fat percentage measured by smart phone applicaiton compared to body fat percentage as measured by DEXA scan | 8 months | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| abdominal circumference | Analysis will be undertaken to see if the variance between application and dual energy x-ray absorptiometry is reduced when the abdominal circumference is included in the application or whether inclusion of abdominal circumference does not reduce the variance. | 8 months |