scholarly journals Electrical impedance scanning: a new imaging technique for evaluating microcalcification in the breast?

2002 ◽  
Vol 4 (S1) ◽  
Author(s):  
PJ Kneeshaw ◽  
PJ Drew ◽  
A Hubbard
Keyword(s):  
Electrical Impedance ◽  
Imaging Technique ◽  
Electrical Impedance Scanning

scholarly journals Assessment of regional lung ventilation by electrical impedance tomography in a patient with unilateral bronchial stenosis and a history of tuberculosis

2013 ◽  
Vol 39 (6) ◽  
pp. 742-746 ◽  
Author(s):  
Liégina Silveira Marinho ◽  
Nathalia Parente de Sousa ◽  
Carlos Augusto Barbosa da Silveira Barros ◽  
Marcelo Silveira Matias ◽  
Luana Torres Monteiro ◽  
...  
Keyword(s):  
Radionuclide Imaging ◽  
Electrical Impedance ◽  
Imaging Technique ◽  
Lung Ventilation ◽  
Bronchial Stenosis ◽  
Impedance Tomography ◽  
Postural Changes ◽  
Regional Lung ◽  
History Of ◽  
Regional Lung Ventilation

Bronchial stenosis can impair regional lung ventilation by causing abnormal, asymmetric airflow limitation. Electrical impedance tomography (EIT) is an imaging technique that allows the assessment of regional lung ventilation and therefore complements the functional assessment of the lungs. We report the case of a patient with left unilateral bronchial stenosis and a history of tuberculosis, in whom regional lung ventilation was assessed by EIT. The EIT results were compared with those obtained by ventilation/perfusion radionuclide imaging. The patient was using nasal continuous positive airway pressure (CPAP) for the treatment of obstructive sleep apnea syndrome. Therefore, we studied the effects of postural changes and of the use of nasal CPAP. The EIT revealed heterogeneous distribution of regional lung ventilation, the ventilation being higher in the right lung, and this distribution was influenced by postural changes and CPAP use. The EIT assessment of regional lung ventilation produced results similar to those obtained with the radionuclide imaging technique and had the advantage of providing a dynamic evaluation without radiation exposure.

Diagnostic Potential of Targeted Electrical Impedance Scanning in Classifying Suspicious Breast Lesions

2002 ◽  
Vol 37 (2) ◽  
pp. 65-72 ◽  
Author(s):  
ANNIKA WERSEBE ◽  
KATJA SIEGMANN ◽  
UTE KRAINICK ◽  
Nikos FERSIS ◽  
ULRICH VOGEL ◽  
...  
Keyword(s):  
Electrical Impedance ◽  
Breast Lesions ◽  
Diagnostic Potential ◽  
Electrical Impedance Scanning

Animal-Based Model to Investigate the Minimum Tumor Size Detectable with an Electrical Impedance Scanning Technique

2003 ◽  
Vol 10 (1) ◽  
pp. 37-44 ◽  
Author(s):  
Ansgar Malich ◽  
Thomas Böhm ◽  
Tobias Fritsch ◽  
Mirjam Facius ◽  
Martin G. Freesmeyer ◽  
...  
Keyword(s):  
Tumor Size ◽  
Electrical Impedance ◽  
Scanning Technique ◽  
Electrical Impedance Scanning

Prospective Trial Evaluating Electrical Impedance Scanning of Thyroid Nodules Before Thyroidectomy

2008 ◽  
Vol 247 (5) ◽  
pp. 843-853 ◽  
Author(s):  
Aviram Nissan ◽  
George E. Peoples ◽  
Bassam Abu-Wasel ◽  
Carol F. Adair ◽  
Diana Prus ◽  
...  
Keyword(s):  
Electrical Impedance ◽  
Thyroid Nodules ◽  
Prospective Trial ◽  
Electrical Impedance Scanning

Electrical impedance scanning?application of this new technique for lymph node evaluation in children

2003 ◽  
Vol 33 (7) ◽  
pp. 461-466 ◽  
Author(s):  
Gerlind Schneider ◽  
Bernd Gruhn ◽  
Susanna Vogt ◽  
Felix Zintl ◽  
Roselle Anderson ◽  
...  
Keyword(s):  
Lymph Node ◽  
Electrical Impedance ◽  
New Technique ◽  
Electrical Impedance Scanning ◽  
Lymph Node Evaluation

scholarly journals Reconstruction of Electrical Impedance Tomography Using Fish School Search, Non-Blind Search, and Genetic Algorithm

2017 ◽  
Vol 8 (2) ◽  
pp. 17-33 ◽  
Author(s):  
Valter A. F. Barbosa ◽  
Reiga R. Ribeiro ◽  
Allan R. S. Feitosa ◽  
Victor L. B. A. Silva ◽  
Arthur D. D. Rocha ◽  
...  
Keyword(s):  
Electrical Impedance Tomography ◽  
Electrical Impedance ◽  
Imaging Technique ◽  
Optimization Method ◽  
Impedance Tomography ◽  
Circular Section ◽  
Fish School ◽  
Noninvasive Imaging Technique ◽  
Ill Posed ◽  
Blind Search

Electrical Impedance Tomography (EIT) is a noninvasive imaging technique that does not use ionizing radiation, with application both in environmental sciences and in health. Image reconstruction is performed by solving an inverse problem and ill-posed. Evolutionary Computation and Swarm Intelligence have become a source of methods for solving inverse problems. Fish School Search (FSS) is a promising search and optimization method, based on the dynamics of schools of fish. In this article the authors present a method for reconstruction of EIT images based on FSS and Non-Blind Search (NBS). The method was evaluated using numerical phantoms consisting of electrical conductivity images with subjects in the center, between the center and the edge and on the edge of a circular section, with meshes of 415 finite elements. The authors performed 20 simulations for each configuration. Results showed that both FSS and FSS-NBS were able to converge faster than genetic algorithms.

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