摘要:
A scalable multislice system (10) configured to generate multiple streams of image data with different image quality characteristics prospectively and simultaneously is described. Such capability enables improving existing clinical diagnosis and also enables use of clinical application protocol driven method for image reconstruction and display as well as image analysis. More specifically, with the scalable multislice imaging system (10), multiple rows (>2) of x-ray scan data along the patient's long axis are simultaneously acquired. Multiple protocols (100) are "pre-built" based on specific applications to determine image slice thickness, image reconstruction filter, display method, e. g., field of view, filming requirement and image archiving requirement, prospectively. Multiple image sets with different slice thickness, different reconstruction methods, different display model - axial, 3D or reformat which are pre-determined by the protocol (100) used can then be displayed.
摘要:
The present invention, in one form, is a system (10) which, in one embodiment, adjusts the x-ray source current to reduce image noise to better accommodate different scanning parameters. Specifically, in one embodiment, the x-ray source current is adjusted as a function of image slice thickness, scan rotation time, collimation mode, table speed, scan mode, and filtration mode. Particularly, a function is stored in a CT system computer (36) to determine an x-ray source current adjustment factor so that the appropriate x-ray source current is supplied to the x-ray source (14) for the determined parameters. After adjusting the x-ray source current, an object is scanned.