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Objective <p>To analyse the time delay between imaging modalities and several factors which impact the imaging correlation between CTA and DSA.</p> Materials and methods <p>A retrospective cross-sectional study was conducted on all patients who underwent DSA following a positive contrast blush in CTA for active bleeding from January 2021 to December 2022. Time delay and several factors were compared between positive and negative imaging correlation groups.</p> Results <p>Ninety-one DSAs were performed in patients with active bleeding following a positive CTA. Forty-one patients had gastrointestinal bleeding. Seventeen patients had liver injury/ruptured liver tumors. Fifteen patients had chest wall/abdominal wall/retroperitoneum bleeding. The median time delay from CTA to DSA was 295 (216–584) minutes, with no significant difference between positive and negative correlation groups. However, we found a significant decrease in positive correlation when performing DSA at 120–239&#xa0;min compared with those performed at 0–119&#xa0;min, 30.4% versus 60%, respectively (<i>p</i> value = 0.049).</p> Conclusions <p>After a positive CTA, DSA should be performed promptly to improve the chance of detecting the bleeding site and enable super-selective embolization.</p>

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Predictive factors of extravasated visualization in digital subtraction angiogram (DSA) following a positive computed tomography angiogram (CTA)

  • 期刊论文

  • 发表日期：

    2025年10月7日

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  • Tanapong Panpikoon,
  • Preedewat Premboonchuen,
  • Kaewpitcha Pichitpichatkul,
  • Sasikorn Feinggumloon,
  • Chinnarat Bua-ngam,
  • Tharintorn Treesit

摘要

Objective

To analyse the time delay between imaging modalities and several factors which impact the imaging correlation between CTA and DSA.

Materials and methods

A retrospective cross-sectional study was conducted on all patients who underwent DSA following a positive contrast blush in CTA for active bleeding from January 2021 to December 2022. Time delay and several factors were compared between positive and negative imaging correlation groups.

Results

Ninety-one DSAs were performed in patients with active bleeding following a positive CTA. Forty-one patients had gastrointestinal bleeding. Seventeen patients had liver injury/ruptured liver tumors. Fifteen patients had chest wall/abdominal wall/retroperitoneum bleeding. The median time delay from CTA to DSA was 295 (216–584) minutes, with no significant difference between positive and negative correlation groups. However, we found a significant decrease in positive correlation when performing DSA at 120–239 min compared with those performed at 0–119 min, 30.4% versus 60%, respectively (p value = 0.049).

Conclusions

After a positive CTA, DSA should be performed promptly to improve the chance of detecting the bleeding site and enable super-selective embolization.