|
KMID : 0371519970200000117
|
|
Bulletin of Wonkwang Health College
1997 Volume.20 No. 0 p.117 ~ p.124
|
|
|
Study on Interpolation Algorism and Contrast Resolution in Helical CT System
|
|
|
|
|
Abstract
|
|
|
Unlike conventional CT-scan, the helical CT scan uses continuos rotating CT equipment with a slip ring to move the patient´s coach at a constant speed while continuously scanning. Slice sensitivity profiles in the Z-position using the conventional X-ray CT have a shape similar to a rectangular wave, which slightly spreads out into plains below the mountain. However, in the helical CT, with an expansion of the base, the rectangular shape collapse and a mountain-like shape can be seen.
Author investigated the following factors in helical CT scanning; the ability to scan along the basis of the body, effective slice width slice shape and precision of coach velocity. Helical scanning with spiral X-ray track is different from the conventional scanning in terms of the principle of image reconstruction performed. Author believed that the problems in helical scanning can be solved by understanding new the special parameters such as the bed moving speed and the interval of image reconstruction.
|
|
|
KEYWORD
|
|
|
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|
|