Image restoration in chirp-pulse microwave CT (CP-MCT)

被引：68

作者：

Bertero, M

Miyakawa, M

Boccacci, P

Conte, F

Orikasa, K

Furutani, M

机构：

[1] Niigata Univ, Fac Engn, Dept Biocybernet, Niigata 9502181, Japan

[2] Univ Genoa, INFM, I-16146 Genoa, Italy

[3] Univ Genoa, Dipartimento Informat & Sci Informaz, I-16146 Genoa, Italy

[4] Univ Genoa, Dipartimento Fis, I-16146 Genoa, Italy

来源：

IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING | 2000年 / 47卷 / 05期

关键词：

image restoration; microwave tomography;

D O I：

10.1109/10.841341

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

Chirp-pulse microwave computed tomography (CP-MCT) is a technique for imaging the distribution of temperature variations inside biological tissues. Even if resolution and contrast are adequate to this purpose, a further improvement of image quality is desirable. In this paper, we discuss the blur of CP-MCT images and we propose a method for estimating the corresponding point spread function (PSF), To this purpose we use both a measured and a computed projection of a cylindrical phantom, We find a good agreement between the two cases. Finally the estimated PSF is used for deconvolving data corresponding to various kinds of cylindrical phantoms, We use an iterative nonlinear deconvolution method which assures nonnegative solutions and we demonstrate the improvement of image quality which can be obtained in such a way.

引用

页码：690 / 699

页数：10

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