COMPUTER-ASSISTED QUANTIFICATION OF VASOSPASM ON ANGIOGRAMS

We describe a new computer-based, automated method for the assessment of in vivo cerebral vasospasm. Arterial diameter measurements were per formed on post-processed digital substraction angiographic images, usi ng ''pixel'' as the unit. Vasospasm which was difficult to detect by v isual inspection could be measured by the ''stenosis quantification'' program. A computer-assisted method such as we describe might decrease the risk of subjective errors.