Tomographic imaging with nonuniform angular sampling

被引:12
作者
Scheffler, K [1 ]
机构
[1] Univ Basel, CH-4031 Basel, Switzerland
关键词
projection imaging; computed tomography; techniques; magnetic resonance imaging; physics and instrumentation; image quality;
D O I
10.1097/00004728-199901000-00032
中图分类号
R8 [特种医学]; R445 [影像诊断学];
学科分类号
1002 ; 100207 ; 1009 ;
摘要
A new class of polar sampling patterns for projection imaging is described. In contrast to conventional techniques, a nonuniform variation of the angular increments between consecutive projections is introduced. The proposed method allows adaptation of the polar sampling pattern to different shapes of the object. Numerical simulations and MR experiments verify that angular sampling density can be varied according to the radial extension of the object, resulting in a reduction of the total number of required projections land X-ray exposure) compared with conventional circular field-of-view imaging.
引用
收藏
页码:162 / 166
页数:5
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