NDLI: Microwave imaging for tissue assessment: initial evaluation in multitarget tissue-equivalent phantoms

Content Provider	IEEE Xplore Digital Library
Author	Meaney, P.M. Paulsen, K.D. Hartov, A. Crane, R.K.
Copyright Year	1964
Abstract	A prototype microwave imaging system is evaluated for its ability to recover two-dimensional (2-D) electrical property distributions under transverse magnetic (TM) illumination using multitarget tissue equivalent phantoms. Experiments conducted in a surrounding lossy saline tank, demonstrate that simultaneous recovery of both the real and imaginary components of the electrical property distribution is possible using absolute imaging procedures over a frequency range of 300-700 MHz. Further, image reconstructions of embedded tissue-equivalent targets are found to be quantitative not only with respect to geometrical factors such as object size and location but also electrical composition. Quantitative assessments based on full-width half-height criteria reveal that errors in diameter estimates of reconstructed targets are less than 10 mm in all cases, whereas, positioning errors are less than 1 mm in single object experiments but degrade to 4-10 mm when multiple targets are present. Recovery of actual electrical properties is found to be frequency dependent for the real and imaginary components with background values being typically within 10-20% of their correct size and embedded object having similar accuracies as a percentage of the electrical contrast, although errors as high as 50% can occur. The quantitative evaluation of imaging performance has revealed potential advantages in a two-tiered receiver antenna configuration whose measured field values are more sensitive to target region changes than the typical tomographic type of approach which uses reception sites around the full target region perimeter. This measurement strategy has important implications for both the image reconstruction algorithm where there is a premium on minimizing problem size without sacrificing image quality and the hardware system design which seeks to economize on the amount of measured data required for quantitative image reconstruction while maximizing its sensitivity to target perturbations.
Sponsorship	IEEE Engineering in Medicine and Biology Society
Page Count	13
File Size	1639556
Starting Page	878
Ending Page	890
File Format	PDF
ISSN	00189294
Volume Number	43
Issue Number	9
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1996-09-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Microwave imaging Imaging phantoms Image reconstruction Antenna measurements Magnetic field measurement Size measurement Prototypes Two dimensional displays Magnetic properties Lighting
Content Type	Text
Resource Type	Article
Subject	Biomedical Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Quantification of 3-D field effects during 2-D microwave imaging

Microwave tomography: two-dimensional system for biological imaging

Three-dimensional microwave tomography: experimental imaging of phantoms and biological objects

Microwave-tomographic imaging of the high dielectric-contrast objects using different image-reconstruction approaches

Quasi 2-D Field Reconstruction Using the Conjoint Cylindrical Wave Expansion

Nonactive antenna compensation for fixed-array microwave imaging. I. Model development

Three-dimensional microwave tomography: experimental prototype of the system and vector Born reconstruction method

Modern microwave: inverse-scattering techniques for image reconstruction

Near Field Characterization of an Imaging System Based on a Frequency Scanning Antenna Array

Microwave imaging for tissue assessment: initial evaluation in multitarget tissue-equivalent phantoms

Similar Documents

Quantification of 3-D field effects during 2-D microwave imaging

Microwave tomography: two-dimensional system for biological imaging

Three-dimensional microwave tomography: experimental imaging of phantoms and biological objects

Microwave-tomographic imaging of the high dielectric-contrast objects using different image-reconstruction approaches

Quasi 2-D Field Reconstruction Using the Conjoint Cylindrical Wave Expansion

Nonactive antenna compensation for fixed-array microwave imaging. I. Model development

Three-dimensional microwave tomography: experimental prototype of the system and vector Born reconstruction method

Modern microwave: inverse-scattering techniques for image reconstruction

Near Field Characterization of an Imaging System Based on a Frequency Scanning Antenna Array

Microwave imaging for tissue assessment: initial evaluation in multitarget tissue-equivalent phantoms