Title :
Analysis of Filtering Effects Based on Low Dose 3D Hepatic MDCT Images by Applying an Optimized Feature Preserving Strategy
Author :
Deng, Jiehang ; Li, Zheng ; Lv, Zhuorong ; Xiao, Canhui
Author_Institution :
Sch. of Comput., Guangdong Univ. of Technol., Guangzhou, China
Abstract :
The X-ray exposure of hepatic MDCT (Multidetector-Row Computed Tomography) images threatens human health. In this paper, the 3D adaptive median filter with local averaging is optimized to improve the image quality of low dose hepatic MDCT images. The modified strategy is designed according to the subtle texture of a hepatic tumor. Filtering experiments are based on phantom images with different dose levels and clinical hepatic ones with a certain dose level. Qualitative and quantitative evaluations show that the x-ray exposure can be reduced to 60% at least without compromising the quality of diagnostic images.
Keywords :
adaptive filters; computerised tomography; filtering theory; image texture; median filters; medical image processing; phantoms; 3D adaptive median filter; X-ray exposure; diagnostic image quality; filtering effect analysis; hepatic tumor subtle texture; human health; image quality; low dose 3D hepatic MDCT images; multidetector-row computed tomography images; phantom images; Adaptive filters; Computed tomography; Filtering; Imaging phantoms; Noise; Tumors; X-ray imaging; 3D feature preserving filtering; Low dose CT; MDCT; Medical image; Noise reduction;
Conference_Titel :
Digital Home (ICDH), 2012 Fourth International Conference on
Conference_Location :
Guangzhou
Print_ISBN :
978-1-4673-1348-3
DOI :
10.1109/ICDH.2012.27
