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JIANG Y, TANG W T, HU R, et al. Impact of Individual Body Shape Factors and Tissue Contents on the Water Equivalent Diameter of Size-Specific Dose Estimations in Adult Chest CT[J]. CT Theory and Applications, xxxx, x(x): 1-7. DOI: 10.15953/j.ctta.2024.272. (in Chinese).
Citation: JIANG Y, TANG W T, HU R, et al. Impact of Individual Body Shape Factors and Tissue Contents on the Water Equivalent Diameter of Size-Specific Dose Estimations in Adult Chest CT[J]. CT Theory and Applications, xxxx, x(x): 1-7. DOI: 10.15953/j.ctta.2024.272. (in Chinese).
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Impact of Individual Body Shape Factors and Tissue Contents on the Water Equivalent Diameter of Size-Specific Dose Estimations in Adult Chest CT

  • 1.

    Hunan University of Chinese Medicine, Changsha, Hunan 410208, China

  • 2.

    Chongqing hospital of traditional Chinese medicine, Chongqing 400021, China

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  • Received Date: November 25, 2024
  • Revised Date: March 02, 2025
  • Accepted Date: March 04, 2025
  • Available Online: April 05, 2025
    Graphical Abstract
    • Abstract

  • Objective: To investigate the impact of individual body size factors and tissue composition on the size-specific dose estimate(SSDEWED) based on water equivalent diameter for adult chest. Methods: A total of 205 adult subjects who underwent chest CT scans at our hospital were enrolled, and their individual information (height, weight, body mass index) was collected. The average CTROI value, cross-sectional area AROI, transverse diameter, and anteroposterior diameter of the thorax on the axial images at the intermediate level were collected. The fat content, fat volume, muscle content, and muscle volume across the entire scanning range were recorded. The anteroposterior diameter/transverse diameter, scan length, and scan length/transverse diameter were calculated. The volume CT dose index (CTDIvol) of the subjects was obtained, and the SSDEWED values at the mid-level of all subjects were calculated. The correlations between fat content, muscle content, fat volume, muscle volume, BMI, cross-sectional AROI, transverse diameter, anteroposterior diameter, scan length, scan length/transverse diameter ratio, anteroposterior diameter/transverse diameter ratio, and SSDEWED were analyzed. Results: Fat content, fat volume, muscle volume, BMI, cross-sectional AROI, transverse diameter, anteroposterior diameter, scan length/transverse diameter ratio are significantly positively correlated with SSDEWED. Muscle content, anteroposterior/transverse diameter ratio, and scan length showed no correlation with SSDEWED. Conclusion: Multiple individual body size factors and tissue compositions are significantly correlated with SSDEWED, among which adipose tissue is the key factor influencing SSDEWED.

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    • References (28)
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