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ZHANG Y H, MA Z X, HU L J, et al. Comparative Study of Different Scanning Modes in Thoracic Aortic Computed Tomography Angiography[J]. CT Theory and Applications, xxxx, x(x): 1-6. DOI: 10.15953/j.ctta.2024.346. (in Chinese).
Citation: ZHANG Y H, MA Z X, HU L J, et al. Comparative Study of Different Scanning Modes in Thoracic Aortic Computed Tomography Angiography[J]. CT Theory and Applications, xxxx, x(x): 1-6. DOI: 10.15953/j.ctta.2024.346. (in Chinese).
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Comparative Study of Different Scanning Modes in Thoracic Aortic Computed Tomography Angiography

  • 1.

    Yanjing Medical College, Capital Medical University, Beijing 101300, China

  • 2.

    Department of Radiology, Beijing Tongren Hospital, Capital Medical University, Dongcheng District, Beijing 100730, China

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  • Received Date: December 30, 2024
  • Revised Date: February 12, 2025
  • Accepted Date: February 18, 2025
  • Available Online: March 15, 2025
    Graphical Abstract
    • Abstract

  • Objective: This study aimed to compare the effects of different scanning modes on image quality and radiation dose in thoracic aortic computed tomography angiography (CTA). Methods: The image quality and radiation dose of 30 cases of thoracic aortic CTA (Group 1, control group), 30 cases of retrospective CTA diastolic phase (Group 2) and systolic phase (Group 3), and 30 cases of wide-exposure pulse prospective electrocardiogram (ECG) (Group 4) were retrospectively analyzed. The CT value, noise, contrast-to-noise ratio (CNR), signal-to-noise ratio (SNR), and radiation dose (volume CT dose index [CTDIvol]) were recorded and measured. The image quality was evaluated subjectively using the four points method. The subjective and objective indicators were analyzed statistically. Results: No differences were observed in the objective indexes of noise, CNR and SNR among the groups. The subjective score of pairwise comparison of Groups 2~4 was significantly higher than that of Group 1, and no difference was observed among Groups 2~4. The CTDIvol values of the non-gated group (Group 1), retrospective gated groups (Groups 2 and 3), and prospective gated group (Group 4) were 13.70 (11.87,16.58), 12.62 (10.03,15.01), and 11.54 (8.92,15.56), respectively, without a statistically significant difference.

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    • References (14)
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