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Information Journal Paper

Title

CLINICAL APPLICATIONS OF VIRTUAL, NON-CONTRAST HEAD IMAGES DERIVED FROM DUAL-SOURCE, DUAL-ENERGY CEREBROVASCULAR COMPUTED TOMOGRAPHY ANGIOGRAPHY

Pages

  159-163

Abstract

 Background: This study set out to evaluate the ulity of cerebrovascular virtual non-contrast (VNC) scans.Materials and Methods: Convenonal non-contrast (CNC) and DUAL-ENERGY computed tomography angiography (DE-CTA) head scans were conducted on 100 subjects, of which 46 were normal, 15 had parenchymal hematomas of the brain, 13 had ischemic infarcon, 22 had tumors, and 4 had calcified lesions. VNC images were extracted from the DE-CTA head scans by post-processing. The true (or convenonal) and VNC images were compared in terms of the mean CT a.enuaon value and signal-to-noise rao (SNR) of the cerebral parenchyma, the image quality, the lesion detecon sensivity, and the radiaon exposure level.Results: The image qualies of the CNC and VNC scans were (4.95 ± 0.22) points and (3.94 ± 0.24) points (t=31.18, P<0.05), the mean CT values for the CNC and VNC images were (34.6 ± 2.44) and (28.6 ± 5.40) HU (t =10.126, P<0.05), the SNRs were (9.45 ± 1.26) and (6.87 ± 1.77), and the HU for white ma.er was (t=11.859, P<0.05), respecvely. The effecve radiaon doses from the DE-CTA head scans and the convenonal non-contrast scans were (8.55 ± 0.57) mSv and (9.41 ± 1.00) mSv, respecvely. No significant difference in the lesion detecon sensivies was observed between the CNC and VNC scans, except for ny calcified lesions, which could not be idenfied by a VNC scan.Conclusion: VNC and contrast-enhanced images could be obtained from DE-CTA head scans and could aid in the diagnosis of cerebral lesions. The radiaon dose from the VNC scan was less than that from the CNC scan.

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    APA: Copy

    . (). . , (), -. SID. https://sid.ir/paper/286715/en

    Vancouver: Copy

    . . [Internet]. ;():-. Available from: https://sid.ir/paper/286715/en

    IEEE: Copy

    , “,” , vol. , no. , pp. –, , [Online]. Available: https://sid.ir/paper/286715/en

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