Thermography at millimeter wavelengths

Edrich, J.; Hardee, P.C.

doi:10.1109/proc.1974.9630

Cited by 40 publications

(18 citation statements)

References 6 publications

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“…Total power radiometric systems developed over the years for medical and other applications, are discussed in numerous papers [4][5][6], mainly consisting of radiometric systems with contacting antennas. Edrich and Hardee developed a different kind of system in 1974 [7], suggesting the use of a horn antenna with a dielectric lens attached to the input of a total power receiver at 45 GHz for the purpose of scanning an object. The infrared region though is limited in its usefulness because living tissue readily absorbs it and hence, only signals originating from the surface can be detected [8].…”

Section: Introductionmentioning

confidence: 99%

Electromagnetic Analysis of a Non-Invasive 3d Passive Microwave Imaging System

Karanasiou¹,

Uzunoglu²,

Garetsos³

2004

PIER

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Abstract-A technique based on the Green's function theory is used in the present research in order to study theoretically the focusing properties of a constructed 3D non-invasive microwave imaging system, consisting of an ellipsoidal conductive cavity and a radiometric receiver. A double layered spherical human head model is placed on one focal point of the elliptical reflector, while the receiving antenna is placed on the other focus. Making use of the reciprocity theorem, the equivalent problem of the coupling between an elementary dipole and the double layered lossy dielectric human spherical model is solved. Numerical results concerning the electric field distribution inside the head model and in the rest of the cavity, at two operating frequencies (1.5 GHz and 3.5 GHz), are presented and compared to the results of an electromagnetic simulator. Finally, phantom experimental results validate the proof of concept and determine the temperature and spatial attributes of the system.

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Section: Introductionmentioning

confidence: 99%

Electromagnetic Analysis of a Non-Invasive 3d Passive Microwave Imaging System

Karanasiou¹,

Uzunoglu²,

Garetsos³

2004

PIER

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“…23,40 Excellent reviews of the subject are those of Foster and Cheever 21 and Rosen et al 23 Since the 1970s, several research groups have carried out clinical evaluations of microwave radiometry (passive, hybrid, and active approaches). [218][219][220][221][222][223][224][225][226][227][228][229][230][231][232][233][234][235][236][237] The most important work was done by Barret et al 220 in the fi eld of breast cancer screening. One thousand patients were examined at the Faulkner Hospital in Boston with microwave radiometry (operating at 1.3, 3.3, and 6 GHz) and infrared thermography.…”

Section: Viic Microwave Radiometric Imagingmentioning

confidence: 99%

Thermal Therapy, Part IV: Electromagnetic and Thermal Dosimetry

Habash

Bansal

Krewski

et al. 2007

Crit Rev Biomed Eng

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ABSTRACT:In this article some of the important techniques in electromagnetic (EM) and thermal dosimetry are reviewed. Three major areas are discussed: modeling power deposition and estimation of EM energy absorbed by tissues exposed to EM radiation, electrical-thermal modeling for thermal therapy with various models of heat transfer in living tissues, and thermal dosimetry using invasive and noninvasive thermometry. Knowledge about the temperature distributions achieved can only be obtained by treatment planning of patient therapy. This process is called thermal therapy planning system (TTPS), which is a large and complex system for design, control, documentation, and evaluation of the treatment that also provides data for treatment optimization. Various imaging techniques for guidance and monitoring necessary for clinical treatments are also discussed. The review concludes by suggesting future avenues for investigations.

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“…During the last decades, a number of research groups have studied various clinical applications based on radio-thermometry for detection of thermal anomalies in subcutaneous, or invasively more deeper, parts of the human body. The possibility of using microwave radiometry for non-invasive thermometry was originally suggested back in the early 1970's (Edrich & Hardee, 1974;Enander & Larson, 1974) and the sensing principle was denoted microwave thermography.…”

Section: Introductionmentioning

confidence: 99%

Non-invasive temperature monitoring during microwave heating applying a miniaturized radiometer

Jacobsen¹

2011

Microwave Heating

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Thermography at millimeter wavelengths

Cited by 40 publications

References 6 publications

Electromagnetic Analysis of a Non-Invasive 3d Passive Microwave Imaging System

Electromagnetic Analysis of a Non-Invasive 3d Passive Microwave Imaging System

Thermal Therapy, Part IV: Electromagnetic and Thermal Dosimetry

Non-invasive temperature monitoring during microwave heating applying a miniaturized radiometer

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