Computer for evaluating signals from nuclear magnetic resonance tomography and a nuclear resonance tomograph equipped with said computer
First Claim
1. A computer for the evaluation of data from nuclear spin tomographs employing a correlation analysis which is performed utilizing a detrending procedure, said computer including evaluation means, which, in accordance with a sliding-window procedure, utilize a number of n data values for said correlation analysis, in which, with continuing data measurement, the respective oldest values are discarded and the newest data values are employed in the computation.
1 Assignment
0 Petitions
Accused Products
Abstract
In a computer for evaluating signals from nuclear magnetic resonance tomography and a tomograph using such a computer, the neuronal activity measured during a nuclear magnetic resonance tomographic examination follows a protocol, which reproduces the temporal sequence of stimuli. During a correlation analysis, the sensitivity of known means to changes in the signal-response form normally decreases with each activation cycle. According to the invention, better evaluation results can be achieved in the correlation analysis by using a constant number of n data values in a correlation analysis employing a sliding-window technique. As the data measurement progresses, the oldest value is continuously disposed of and the most recent data value utilized in the calculation.
-
Citations
14 Claims
- 1. A computer for the evaluation of data from nuclear spin tomographs employing a correlation analysis which is performed utilizing a detrending procedure, said computer including evaluation means, which, in accordance with a sliding-window procedure, utilize a number of n data values for said correlation analysis, in which, with continuing data measurement, the respective oldest values are discarded and the newest data values are employed in the computation.
-
14. A nuclear resonance tomograph including a computer for the evaluation of data from nuclear spin tomographs wherein a correlation analysis is performed utilizing a detrending procedure, said computer including evaluation means, which, in accordance with a sliding-window procedure, utilize a number of n data values for said correlation analysis, in which, with continuing data measurement, the respective oldest data values are discarded and the newest data values are employed in the computation.
Specification