CTA IN PATIENTS WITH ACUTE SUBARACHNOID HAEMORRHAGE. A comparative study with selective, digital angiography and blinded, independent review
| Autor: | H. K. Pedersen, Karl-Fredrik Lindegaard, I. M. Anke, Søren Jacob Bakke, Iver A. Langmoen, I. O. Skalpe, R. Sagsveen, John K. Hald, P. H. Nakstad |
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| Rok vydání: | 2001 |
| Předmět: |
medicine.medical_specialty
Kappa value Radiological and Ultrasound Technology medicine.diagnostic_test Vascular disease Vascular anatomy business.industry musculoskeletal neural and ocular physiology Retrospective cohort study General Medicine Digital subtraction angiography Diagnostic evaluation medicine.disease Central nervous system disease Aneurysm Angiography medicine Radiology Nuclear Medicine and imaging Subarachnoid haemorrhage Intra-arterial digital subtraction angiography In patient cardiovascular diseases Radiology business psychological phenomena and processes |
| Zdroj: | Acta Radiologica. 42:43-49 |
| ISSN: | 1600-0455 0284-1851 |
| DOI: | 10.1034/j.1600-0455.2001.042001043.x |
| Popis: | Purpose: Minimal- or non-invasive methods replacing intra-arterial digital subtraction angiography (IA-DSA) would be of great importance in patients suffering from acute subarachnoid haemorrhage (SAH). The aims of this study were to compare CTA with IA-DSA in patients with acute SAH, to compare CTA interpretations with those of blinded, independent reviewers and to evaluate improvement in CTA diagnostics after 1 year of experience with CTA. Material and Method: During 2 years 162 patients with SAH underwent CTA as well as IA-DSA. Independent blinded review of 77 patients was performed for 1 year. Results: Totally 144 aneurysms were demonstrated in 119 patients at IA-DSA, while 43 patients had normal intracranial arteries. Initially 131 aneurysms were detected at CTA while 2 normal, tortuous arteries were misinterpreted as aneurysms, giving a sensitivity of 91% and a specificity of 95%. At independent blinded review the observer agreement was 87% and the kappa value 0.68. Conclusion: CTA in SAH is of great value in demonstrating vascular anatomy and the exact size of an aneurysm. However, IA-DSA is still needed for diagnostic evaluation in aneurysms smaller than 5 mm in diameter, especially in those located near bony structures. |
| Databáze: | OpenAIRE |
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