Cerebral Blood Flow System

This paper describes the ORTEC 4840 Cerebral Blood Flow System (Figures 1 & 2). This system is used to measure the clearance rate of radioisotopes from brain tissue. This measures the regional cerebral blood flow (Glass & Harper1). The system can be separated logically into two major sections and subdivided thus: Hardware 1. Radiation detectors and support electronics 2. Computer interfacing of input and output devices using the CAMAC system 3. ADC for initial calibration of single channel analyzers 4. Computer and peripherals Software 1. calibration routines 2. Data acquisition routines 3. Data reduction routines 4. Data display and plotting routines 5. UItility programs