Study of optimal timing for hepatic arterial dominant phase in helical dynamic CT (2nd report)

We reported the device of the simple equation of scan delay time in this periodical (Vol. 12) in December, 1999. However, part of data that thought that there is clumsiness in the infusion was not included for the examination in the report. We examined it once again about the data that we excluded. And, we discovered the characteristic that must attention. This time, we add the data number to the male 49 examples, female 55 examples and did the statistics processing. As a result, we discovered that there is a difference in the arrival time of the male and female. Next, we did the statistical analysis that used the regression method. Then, we could obtain the extremely fine result. At present, we are using the simple equation that distinguished the male and female. (author)