| 摘要 |
<p>A method of CT-imaging a periodically moving object, comprising rotating a source of x-rays more than half a rotation around the object such that the rotation of the source is unsynchronized to the periodic motion of the object; detecting radiation passing through the object to produce attenuation data; associating a phase of the periodic motion and an angular position of the source, with the data; selecting data from the data, which data is acquired over more than one half-rotation and which selected data has an associated phase substantially equal to certain phases corresponding to at least one acquisition window; and reconstructing at least one image of the object using the selected data.</p> |
