Journal of Shandong University (Health Sciences) ›› 2019, Vol. 57 ›› Issue (1): 68-74.doi: 10.6040/j.issn.1671-7554.0.2018.633

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Clinical value of flash spiral dual-source CT with low-dose scan for children with superficial vascular anomalies

YU Xinxin1,2, GUO Lei3, CHENG Zhaoping2, DUAN Yanhua2, WANG Ximing2   

  1. 1. Shandong University Cheeloo College of Medicine, Jinan 250012, Shandong, China;
    2. Department of Radiology, Shandong Medical Imaging Research Institute, Jinan 250021, Shandong, China;
    3. Department of Interventional Radiology, Qilu Childrens Hospital of Shandong University, Jinan 250021, Shandong, China
  • Published:2022-09-27

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Abstract: Objective To evaluate the diagnostic and therapeutic value of flash spiral dual-source CT with low-dose scan for children with superficial vascular anomalies(VAs). Methods For patients with suspected VAs and affluent blood flow pre-detected by ultrasound, CT was performed with high-pitch mode, individualized low-dose scan protocol and three-dimensional reformation. Single-phase scan time, single-phase dose-length product and total dose-length product were recorded, and the effective radiation doses were calculated. Images were diagnosed by two physicians, therapeutic plans were formulated, and the therapeutic efficacy was followed up. Results Altogether 46 lesions were identified in 35 children(mean age of 7.4 years), including 9 with hemangioma(9/35, 25.71%), 14 with arteriovenous malformation(14/35, 40.00%), and 12 with venous malformation(12/35, 34.29%). The average effective radiation doses of a single phase and total procedure were(0.45±0.16)mSV and(1.31±0.42)mSV, respectively. The average scan time of a single phase was(0.69±0.15)s. Conclusion Flash spiral dual-source CT with high-pitch mode, low-dose scan protocol and 3D reformation is an effective modality for imaging VAs with affluent blood flow in children. It can clearly show lesions and significantly reduce the radiation doses at the same time.

Key words: Dual-source CT, Low dose, Hemangioma, Vascular malformation, Treatment

CLC Number: 

  • R445.3
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