Using existing CT scans for belly fat analysis with QCT doesn't add any extra radiation, making it a safe way to check body fat without extra scans.

Scientific Claim

Abdominal quantitative computed tomography (QCT) analysis of existing computed tomography (CT) scans can predict body fat percentages without requiring additional radiation exposure in Chinese adults.

Original Statement

“QCT technology can be used to analyse existing CT data obtained for other reasons, for instance, lung cancer screening, to assess the body composition across the scanned region without the need of patient time, additional equipment, radiation exposure, or significant extra costs.”

From study:Assessment of whole-body and regional body fat using abdominal quantitative computed tomography in Chinese women and men

Evidence Quality Assessment

Claim Status

appropriately stated

Study Design Support

Design supports claim

Appropriate Language Strength

definitive

Can make definitive causal claims

Assessment Explanation

The claim accurately reflects the study's statement about using existing CT data without additional radiation exposure, which is factually correct as no new radiation is introduced.

Evidence from Studies

Supporting (1)

Assessment of whole-body and regional body fat using abdominal quantitative computed tomography in Chinese women and men

Cross-Sectional Study

Human

2024 Feb 14

Contradicting (0)

No contradicting evidence found

Source Study

Assessment of whole-body and regional body fat using abdominal quantitative computed tomography in Chinese women and men

Score: 54

DOI: 10.1186/s12944-024-02034-y

Similar Assertions

In Chinese men and women, measuring belly fat with QCT scans is closely related to total body fat measured by DXA scans, with the strength of the relationship varying by sex and where the belly scan is taken.

86%

When testing the belly fat prediction equations in men, the average difference from DXA measurements was small (1.31%), with most predictions falling within a range of -4.08% to 6.71%.

79%

For Chinese women, using belly fat measurements from a CT slice at the L5/S1 level along with body weight can predict total body fat with 81% accuracy compared to DXA scans.

75%

For Chinese men, combining belly fat measurements from a single CT slice at the L1/L2 level with BMI can accurately estimate total body fat, accounting for 83% of the variation seen in DXA scans.

74%