Korean Journal of Radiology

  • 제14권2호
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  • Pages.183-193
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  • 2013
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  • 1229-6929(pISSN)
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  • 2005-8330(eISSN)
대한영상의학회 (The Korean Society of Radiology)
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CT Venography for Deep Vein Thrombosis Using a Low Tube Voltage (100 kVp) Setting Could Increase Venous Enhancement and Reduce the Amount of Administered Iodine

  • Cho, Eun-Suk (Department of Radiology, Yonsei University College of Medicine, Gangnam Severance Hospital) ;
  • Chung, Jae-Joon (Department of Radiology, Yonsei University College of Medicine, Gangnam Severance Hospital) ;
  • Kim, Sungjun (Department of Radiology, Yonsei University College of Medicine, Gangnam Severance Hospital) ;
  • Kim, Joo Hee (Department of Radiology, Yonsei University College of Medicine, Gangnam Severance Hospital) ;
  • Yu, Jeong-Sik (Department of Radiology, Yonsei University College of Medicine, Gangnam Severance Hospital) ;
  • Yoon, Choon-Sik (Department of Radiology, Yonsei University College of Medicine, Gangnam Severance Hospital)
  • 발행 : 2013.04.01
⟨ 이전 논문 다음 논문 ⟩

초록

Objective: To investigate the validity of the 100 kVp setting in CT venography (CTV) in the diagnosis of deep vein thrombosis (DVT), and to evaluate the feasibility of reducing the amount of administered iodine in this setting. Materials and Methods: After receiving the contrast medium (CM) of 2.0 mL/kg, 88 patients underwent CTV of the pelvis and lower extremities by using one of four protocols: Group A, 120 kVp setting and 370 mgI/mL CM; group B, 120 kVp and 300 mgI/mL; group C, 100 kVp and 370 mgI/mL; group D, 100 kVp and 300 mgI/mL. The groups were evaluated for venous attenuation, vein-to-muscle contrast-to-noise ratio ($CNR_{VEIN}$), DVT-to-vein contrast-to-noise ratio ($CNR_{DVT}$), and subjective degree of venous enhancement and image quality. Results: Venous attenuation and $CNR_{VEIN}$ were significantly higher in group C (144.3 Hounsfield unit [HU] and 11.9), but there was no significant difference between group A (118.0 HU and 8.2) and D (122.4 HU and 7.9). The attenuation value of DVT was not significantly different among the four groups, and group C had a higher absolute $CNR_{DVT}$ than the other groups. The overall diagnostic image quality and venous enhancement were significantly higher in group C, but there was no difference between groups A and D. Conclusion: The 100 kVp setting in CTV substantially help improve venous enhancement and $CNR_{VEIN}$. Furthermore, it enables to reduce the amount of administered iodine while maintaining venous attenuation, as compared with the 120 kVp setting.

키워드

참고문헌

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  11. Impact of dual-energy CT post-processing to differentiate venous thrombosis from iodine flux artefacts vol.28, pp.12, 2018, https://doi.org/10.1007/s00330-018-5534-8
  12. Low-tube-voltage combined with adaptive statistical iterative reconstruction-V technique in CT venography of lower limb deep vein thrombosis vol.8, pp.None, 2018, https://doi.org/10.1038/s41598-018-29519-y
  13. Low Tube Voltage Computed Tomography Venography for Patients With Deep Vein Thrombosis of the Lower Extremities ― A Comparison With Venous Ultrasonography ― vol.85, pp.4, 2021, https://doi.org/10.1253/circj.cj-20-0416
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