Abstract
A computer program has been developed to calculate parameters associated with cerebral blood flow as studied by scintiangiography. Slopes, integrals, arrival times, maximum counting rates and other quantities are calculated from time activity curves corresponding to designated regions of interest: carotid arteries, middle and anterior cerebral arteries and the peripheral portions of the cerebral hemispheres. Analysis of 210 normal studies revealed good correlation (coefficient of . 70) for both the arterial transit time and the normalized uptake slope (slope/CMAX) with patient age. (CMAX: Maximum number of counts observed). In this study, normal ranges of time differences and ratios between contralateral regions of interest were calculated. A comparison made with a group of 50 CVA (Cerebro-Vascular Accident) patients showed that 94% of them had at least one parameter where the left/right ratio and/or time difference were beyond 2 standard deviations of the normal mean.
| Original language | English (US) |
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| Pages | 69-73 |
| Number of pages | 5 |
| State | Published - 1978 |
| Externally published | Yes |
| Event | Annu Symp on Comput Appl in Med Care, 2nd, Proc - Washington, DC, USA Duration: Nov 5 1978 → Nov 9 1978 |
Other
| Other | Annu Symp on Comput Appl in Med Care, 2nd, Proc |
|---|---|
| City | Washington, DC, USA |
| Period | 11/5/78 → 11/9/78 |
ASJC Scopus subject areas
- Engineering(all)