We present a novel two-dimensional (2D) MAET scanner, with a rotating object of interest and two fixed pairs of electrodes. Such an acquisition scheme, with our novel reconstruction techniques, recovers the boundaries of the regions of constant conductivity uniformly well, regardless of their orientation. We also present a general image reconstruction algorithm for the 2D MAET in a circular chamber with point-like electrodes immersed into the saline surrounding the object. An alternative linearized reconstruction procedure is developed, suitable for recovering the material interfaces (boundaries) when a non-ideal piezoelectric transducer is used for acoustic excitation. The work of the scanner and the linearized reconstruction algorithm is demonstrated using several phantoms made of high-contrast materials and a biological sample.
| Identifer | oai:union.ndltd.org:arizona.edu/oai:arizona.openrepository.com:10150/623625 |
| Date | 21 April 2017 |
| Creators | Kunyansky, L, Ingram, C P, Witte, R S |
| Contributors | Univ Arizona, Dept Math, Univ Arizona, Dept Med Imaging |
| Publisher | IOP PUBLISHING LTD |
| Source Sets | University of Arizona |
| Language | English |
| Detected Language | English |
| Type | Article |
| Rights | © 2017 Institute of Physics and Engineering in Medicine |
| Relation | http://stacks.iop.org/0031-9155/62/i=8/a=3025?key=crossref.975db8c7e8953a1fb584088edd04fa80 |
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