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<p>This study aimed to compare contrast media (CM) remaining in the right subclavian vein after saline flush using a conventional T-tube or a spiralflow-tube in computed tomography angiography (CTA) from the neck to the aortic arch and to evaluate the visualization ability of the right subclavian artery. A total of 71 patients who underwent CTA from the neck to the aortic arch at our institution were retrospectively included (38 in the spiralflow-tube group and 33 in the T-tube group). The volumes of CM were measured in the volume-rendered images of the right subclavian vein by setting the thresholds of 300, 500, and 1000 Hounsfield units (HU) on a three-dimensional workstation. Two reviewers evaluated the depiction of the vascular visualization of the right subclavian artery using a 5-point scale. Data are presented as median (interquartile range; Q1–Q3). The volumes of CM remaining in the right subclavian vein were significantly smaller with the spiralflow-tube group than the T-tube group at all thresholds [300 HU: 0.95 (0.33–2.08) mL vs. 3.02 (1.66–8.64) mL; 500 HU: 0.30 (0.09–0.88) mL vs. 1.60 (0.73–3.61) mL; 1000 HU: 0.07 (0.05–0.35) mL vs. 0.48 (0.18–1.28) mL; all <i>p</i> &lt; 0.01]. The spiralflow-tube group showed significantly higher visualization scores for the right subclavian artery than the T-tube group [5 (4–5) vs. 4 (3–4), <i>p</i> &lt; 0.01]. The saline flush using a spiralflow-tube in CTA from the neck to the aortic arch reduced CM in the right subclavian vein and improved the vascular visualization ability of the right subclavian artery.</p>

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Comparison between a T-tube and a spiralflow-tube to improve the visualization ability of the subclavian artery in CT angiography from the neck to the aortic arch

  • 期刊论文

  • 发表日期：

    2026年4月22日

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  • Junichi Nakagawa,
  • Norimi Nishiyama,
  • Takashi Hoshino,
  • Shota Watanabe,
  • Isao Yamaguchi,
  • Takanori Masuda

摘要

This study aimed to compare contrast media (CM) remaining in the right subclavian vein after saline flush using a conventional T-tube or a spiralflow-tube in computed tomography angiography (CTA) from the neck to the aortic arch and to evaluate the visualization ability of the right subclavian artery. A total of 71 patients who underwent CTA from the neck to the aortic arch at our institution were retrospectively included (38 in the spiralflow-tube group and 33 in the T-tube group). The volumes of CM were measured in the volume-rendered images of the right subclavian vein by setting the thresholds of 300, 500, and 1000 Hounsfield units (HU) on a three-dimensional workstation. Two reviewers evaluated the depiction of the vascular visualization of the right subclavian artery using a 5-point scale. Data are presented as median (interquartile range; Q1–Q3). The volumes of CM remaining in the right subclavian vein were significantly smaller with the spiralflow-tube group than the T-tube group at all thresholds [300 HU: 0.95 (0.33–2.08) mL vs. 3.02 (1.66–8.64) mL; 500 HU: 0.30 (0.09–0.88) mL vs. 1.60 (0.73–3.61) mL; 1000 HU: 0.07 (0.05–0.35) mL vs. 0.48 (0.18–1.28) mL; all p < 0.01]. The spiralflow-tube group showed significantly higher visualization scores for the right subclavian artery than the T-tube group [5 (4–5) vs. 4 (3–4), p < 0.01]. The saline flush using a spiralflow-tube in CTA from the neck to the aortic arch reduced CM in the right subclavian vein and improved the vascular visualization ability of the right subclavian artery.