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Titolo:
Multifrequency electrical impedance imaging: preliminary in vivo experience in breast
Autore:
Osterman, KS; Kerner, TE; Williams, DB; Hartov, A; Poplack, SP; Paulsen, KD;
Indirizzi:
Dartmouth Coll, Thayer Sch Engn, Hanover, NH 03755 USA Dartmouth Coll Hanover NH USA 03755 hayer Sch Engn, Hanover, NH 03755 USA Dartmouth Hitchcock Med Ctr, Dept Radiol, Lebanon, NH 03756 USA Dartmouth Hitchcock Med Ctr Lebanon NH USA 03756 l, Lebanon, NH 03756 USA
Titolo Testata:
PHYSIOLOGICAL MEASUREMENT
fascicolo: 1, volume: 21, anno: 2000,
pagine: 99 - 109
SICI:
0967-3334(200002)21:1<99:MEIIPI>2.0.ZU;2-V
Fonte:
ISI
Lingua:
ENG
Soggetto:
TOMOGRAPHY; TISSUE; SPECTROSCOPY; HYPERTHERMIA;
Keywords:
electrical impedance tomography; electrical impedance spectroscopy; electrical impedance imaging; breast cancer; tissue electrical properties;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Life Sciences
Citazioni:
18
Recensione:
Indirizzi per estratti:
Indirizzo: Osterman, KS Dartmouth Coll, Thayer Sch Engn, Hanover, NH 03755 USA Dartmouth Coll Hanover NH USA 03755 n, Hanover, NH 03755 USA
Citazione:
K.S. Osterman et al., "Multifrequency electrical impedance imaging: preliminary in vivo experience in breast", PHYSL MEAS, 21(1), 2000, pp. 99-109

Abstract

We have deployed a recently completed spectroscopic electrical impedance tomography (EITS) imaging system in a small series of women (13 participantsaccrued to date) in order to investigate the feasibility of delivering EITS breast examinations on a routine basis. Hardware is driven with sinusoidally varying spatial patterns of applied voltage delivered to 16 electrodes over the 10 kHz to 1 MHz spectral range using a radially translating interface which couples the electrodes to the breast through direct contact. Imaging examinations have consisted of the acquisition of multi-channel measurements at ten frequencies on both breasts. Participants lie prone on an examination table with the breast to be imaged pendant in the electrode array that is located below the table. Examinations were comfortable and easy to deliver (about 10 minutes per breast including electrode-positioning time). Although localized near-surface electrode artefacts are evident in the acquired images, several Endings have emerged. Permittivity images have generally been more informative than their conductivity counterparts, except in the case of fluid-filled cysts. Specifically, the mammographically normal breast appears to have characteristic absolute EITS permittivity and conductivity images that emerge across subjects. Structural features in the EITS images have correlated with limited clinical information available on participants with benign and malignant abnormality, cysts and scarring from previous lumpectomy and follow-up radiation therapy. Several cases from this preliminary experience are described.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 12/07/20 alle ore 03:26:26