{
  "abstract": "Purpose Digital subtraction angiography (DSA) is the gold standard for follow-up evaluation of intracranial aneurysms treated with the Woven EndoBridge (WEB) device. This study aimed to assess the efficacy of high-resolution CT angiography (HR-CTA) as a less invasive alternative by comparing its diagnostic performance with that of DSA.Methods This single-center retrospective study analyzed the angiographic and clinical data of patients treated with the WEB device for cerebral aneurysms between January 2021 and December 2024. Patients who underwent HR-CTA within 2 weeks before or after follow-up DSA were included. Occlusion status was assessed using the Bicêtre Occlusion Scale Score (BOSS) and binary classification. The concordance rate between HR-CTA and DSA was evaluated.Results A total of 54 eligible examinations were identified. Using the BOSS, 46 examinations were concordant, resulting in an agreement rate of 85.2%. The Cohen’s κ coefficient was 0.81 (95% CI 0.69 to 0.93), indicating a very high level of agreement. All discordant cases resulted from HR-CTA overestimating occlusion status; however, HR-CTA accurately identified aneurysm remnants. Univariate analyses identified BOSS 0’ as the only significant factor contributing to discrepancies. In the binary evaluation, all 54 examinations were fully concordant (κ=1.00, 95% CI 1.00 to 1.00).Conclusions HR-CTA demonstrated a high concordance rate with DSA for evaluating occlusion status after WEB placement. Its reliable assessment of aneurysm remnants suggests HR-CTA could serve as a practical and less invasive alternative to DSA in follow-up evaluations.",
  "authors": [
    {
      "affiliations": [
        "Neurosurgery, Fujita Health University, Toyoake, Japan"
      ],
      "name": "Kenichiro Suyama"
    },
    {
      "affiliations": [
        "Neurosurgery, Fujita Ika Daigaku Banbuntane Byoin, Nagoya, Japan"
      ],
      "name": "Ichiro Nakahara"
    },
    {
      "affiliations": [
        "Department of Comprehensive Strokology, Fujita Health University School of Medical, Toyoake, Japan"
      ],
      "name": "Shoji Matsumoto"
    },
    {
      "affiliations": [
        "Department of Comprehensive Strokology, Fujita Health University School of Medical, Toyoake, Japan"
      ],
      "name": "Junpei Koge"
    },
    {
      "affiliations": [
        "Neurosurgery, Fujita Ika Daigaku Banbuntane Byoin, Nagoya, Japan"
      ],
      "name": "Jun Tanabe"
    },
    {
      "affiliations": [
        "Neurosurgery, Fujita Ika Daigaku Banbuntane Byoin, Nagoya, Japan"
      ],
      "name": "Akiko Hasebe"
    },
    {
      "affiliations": [
        "Neurosurgery, Fujita Health University, Toyoake, Japan"
      ],
      "name": "Eiji Fujiwara"
    },
    {
      "affiliations": [
        "Neurosurgery, Fujita Health University, Toyoake, Japan"
      ],
      "name": "Shiho Tanaka"
    },
    {
      "affiliations": [
        "Neurosurgery, Fujita Health University, Toyoake, Japan"
      ],
      "name": "Tatsunori Mase"
    },
    {
      "affiliations": [
        "Neurosurgery, Fujita Health University, Toyoake, Japan"
      ],
      "name": "Yuichi Hirose"
    }
  ],
  "title": "High-resolution CT angiography for follow-up evaluation of intracranial aneurysms treated with the Woven EndoBridge device: comparison with digital subtraction angiography",
  "uid": "873f5dc2-eea6-586d-ae35-87cbe592d0ef"
}