"First generation "
"Second generation "
"Third generation "
"CT scanners were first introduced in 1971 with a single detector for brain study under the leadership of Sir Godfrey Hounsfield, an electrical engineer at EMI (Electric and Musical Industries Ltd). After that, it has undergone multiple improvements, with an increase in the number of detectors and a decrease in the scan time."
Expected headings
"First generation "
"Second generation "
"Third generation "
"Fourth generation"
"Other technologies"
"Emerging technologies"
"detectors: multiple, initially 288; newer ones use over 700 arranged in an arc"