| 摘要 |
<p>A wavelet based neural network, WNN, is proposed for image restoration using a nuclear gamma camera (12). The WNN first segments the image noise (22, 24, 26) from the detected signal using a wavelet or multiresolution method (22, 24) and then restores the detector resolution using the neural network (28, 32). An example of the methods is described for detecting beta particles, bremsstrahlung radiation, but the proposed WNN can be applied to either the detection of positrons or gamma rays using the gamma camera (12).</p> |
