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Related Experiment Videos

[Intravenous DSA as a screening method for cerebral aneurysms].

H Fukaya1, K Sunami, S Hoshi

  • 1Department of Neurosurgery, Kawatetsu Chiba Hospital.

Rinsho Hoshasen. Clinical Radiography
|September 1, 1990
PubMed
Summary

Intravenous DSA (IVDSA) effectively screens for cerebral aneurysms larger than 4 mm, which pose a higher rupture risk. This method is clinically useful despite some false positives, particularly for smaller aneurysms.

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Area of Science:

  • Neurology
  • Radiology
  • Medical Imaging

Background:

  • Cerebral aneurysms are a significant cause of subarachnoid hemorrhage.
  • Early detection of cerebral aneurysms is crucial for preventing rupture and improving patient outcomes.
  • Screening methods for cerebral aneurysms require high sensitivity and specificity.

Purpose of the Study:

  • To evaluate the clinical utility of Intravenous DSA (IVDSA) as a screening tool for cerebral aneurysms.
  • To determine the detection rate of IVDSA for cerebral aneurysms compared to conventional angiography.
  • To assess the performance of IVDSA in identifying aneurysms based on size and location.

Main Methods:

  • Intravenous DSA (IVDSA) was performed in 372 cases (390 examinations).
  • Image quality and diagnostic yield of IVDSA were assessed.

Related Experiment Videos

  • IVDSA findings were compared with cerebral angiography results for aneurysm detection and characterization.

    • Main Results:

    • Clinically useful images were obtained in 94.1% of IVDSA examinations.
    • IVDSA detected 15 out of 19 aneurysms in cases with subarachnoid hemorrhage or 3rd nerve palsy.
    • Aneurysms smaller than 4 mm were not visualized by IVDSA, while larger, higher-risk aneurysms were detectable.
    • IVDSA identified 33 suspected aneurysms, with 21 confirmed by angiography, resulting in 12 false positives.

    Conclusions:

    • Intravenous DSA (IVDSA) is a clinically useful screening method for detecting cerebral aneurysms, particularly those larger than 4 mm.
    • Further improvements in image resolution and case selection are needed to reduce false positives.
    • IVDSA shows promise for identifying high-risk cerebral aneurysms in clinical practice.