| 摘要 |
<p>Radiation (32a) having a defined energy spectrum, which is divided into plural subranges is transmitted through radiation are detected (20a-20c) and sorted (48) into the appropriate energy subrange. A transmission image representation is reconstructed (52a-52n) for each data subrange and assigned weighting factors (64a-64n) to provide enhanced images (72, 74, 76) when combined in accordance with the assigned weighting. The multiple transmission images are also combined with equal weighting to generate attenuation correction factors (80) for correcting the emission data (46). The corrected emission image can be combined with one of the feature-enhanced structural images, e.g., for locating the functional emission image with respect to structural features. Also, a feature-enhanced structural image can advantageously be used to register an emission image (86) with an image (100) from another imaging modality such as a computed tomography.</p> |
