NUMERICAL ALGORITHM FOR DIELECTRIC-PERMITTIVITY MICROWAVE IMAGING OF INHOMOGENEOUS BIOLOGICAL BODIES

被引：19

作者：

CAORSI, S ^{[1
]}

FRATTONI, A ^{[1
]}

GRAGNANI, GL ^{[1
]}

NORTINO, E ^{[1
]}

PASTORINO, M ^{[1
]}

机构：

[1] UNIV GENOA,DEPT BIOPHYS & ELECTR ENGN,INTERACT ELECTROMAGNET FIELDS & BIOL SYST RES CTR,I-16145 GENOA,ITALY

来源：

MEDICAL & BIOLOGICAL ENGINEERING & COMPUTING | 1991年 / 29卷 / 06期

关键词：

IMAGE FORMATION; INVERSE SCATTERING; MICROWAVE TOMOGRAPHY; PERMITTIVITY ESTIMATION;

D O I：

10.1007/BF02446100

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

A two-dimensional microwave system is developed to explore the possibility of imaging the distribution of dielectric permittivity in an inhomogeneous biological body. A multiview approach is presented, which can notably improve the system's performance; it makes use of an illumination source that rotates jointly with the observation domain in which the scattered electric field is to be measured. The equation for inverse electromagnetic scattering is transformed into matrix form through the application of the moment method. A pseudoinversion algorithm is used to determine the distribution of the dielectric properties of the scattering body. A look-up table is devised to quickly form the final image. The results of some numerical simulations are reported to point out the capabilities and limitations of the method.

引用

页码：NS37 / NS44

页数：8

共 19 条

[1] ON THE POSSIBLE USE OF MICROWAVE-ACTIVE IMAGING FOR REMOTE THERMAL SENSING [J].

BOLOMEY, JC ;

JOFRE, L ;

PERONNET, G .

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 1983, 31 (09) :777-781

[2]

BOLOMEY JC, 1990, COMAC BME HYPERTHERM, V2, P14

[3]

BOLOMEY JC, 1989, P URSI INT S ELECTRO, P144

[4] 2-DIMENSIONAL MICROWAVE IMAGING BY A NUMERICAL INVERSE SCATTERING SOLUTION [J].

CAORSI, S ;

GRAGNANI, GL ;

PASTORINO, M .

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 1990, 38 (08) :981-989

[5] MICROWAVE IMAGING BY 3-DIMENSIONAL BORN LINEARIZATION OF ELECTROMAGNETIC SCATTERING [J].

CAORSI, S ;

GRAGNANI, GL ;

PASTORINO, M .

RADIO SCIENCE, 1990, 25 (06) :1221-1229

[6] EQUIVALENT CURRENT-DENSITY RECONSTRUCTION FOR MICROWAVE IMAGING PURPOSES [J].

CAORSI, S ;

GRAGNANI, GL ;

PASTORINO, M .

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 1989, 37 (05) :910-916

[7]

CAORSI S, 1990, STRAHLENTHER ONKOL, V166, P509

[8]

CAORSI S, 1989, P URSI INT S ELECTRO, P590

[9] NONLINEAR EXTENSION TO A MOMENT METHOD ITERATIVE RECONSTRUCTION ALGORITHM FOR MICROWAVE TOMOGRAPHY [J].

DATTA, AN ;

BANDYOPADHYAY, B .

PROCEEDINGS OF THE IEEE, 1986, 74 (04) :604-606

[10]

Devaney A. J., 1985, Inverse Methods in Electromagnetic Imaging. Proceedings of the NATO Advanced Research Workshop, P1107

← 1 2 →