[使用智能螺旋算法减少螺旋伪影]

[Reduction of helical artifact using SmartHelical algorithm].

作者信息

Sakai O, Shen Y, Hu H, Kimura F, Furuse M

机构信息

Department of Radiology, Jichi Medical School and Hospital.

出版信息

Nihon Igaku Hoshasen Gakkai Zasshi. 1998 Aug;58(9):527-30.

PMID:9778941

Abstract

Stair-step artifact is a serious problem in reconstructed images of multiplanar reformation (MPR), surface rendering and maximum-intensity projection (MIP). We developed a new algorithm, SmartHelical Algorithm (SHA), to reduce helical artifacts. SmartHelical Algorithm reduced helical artifacts significantly with slight worsening of longitudinal resolution. Noise was reduced and SNR was increased. SHA reduced stair-step artifact in reconstructed images of MPR, surface rendering and MIP, and improved image quality.

摘要

阶梯状伪影在多平面重组（MPR）、表面渲染和最大密度投影（MIP）的重建图像中是一个严重问题。我们开发了一种新算法，即智能螺旋算法（SHA），以减少螺旋伪影。智能螺旋算法显著减少了螺旋伪影，同时纵向分辨率略有下降。噪声降低，信噪比提高。SHA减少了MPR、表面渲染和MIP重建图像中的阶梯状伪影，并提高了图像质量。