Zobrazeno 1 - 10
of 43
pro vyhledávání: '"Shireen D Geimer"'
Publikováno v:
Journal of Medical Physics, Vol 36, Iss 3, Pp 159-170 (2011)
Microwave imaging for medical applications is attractive because the range of dielectric properties of different soft tissues can be substantial. Breast cancer detection and monitoring of treatment response are areas where this technology could be im
Externí odkaz:
https://doaj.org/article/4342b6890808483ba0519a07f65b21f8
Autor:
Paul Meaney, Shireen D. Geimer, Roberta M. diFlorio-Alexander, Robin Augustine, Timothy Raynolds
Publikováno v:
Sensors, Vol 22, Iss 3, p 748 (2022)
We developed a handheld, side-by-side transmission-based probe for interrogating tissue to diagnose sarcopenia—a condition largely characterized by muscle loss and replacement by fat. While commercial microwave reflection-based probes exist, they c
Externí odkaz:
https://doaj.org/article/c92b9f5dfff04fa797b3a1cf957ed2d6
Autor:
Paul M, Meaney, Timothy, Raynolds, Shireen D, Geimer, David, Ouma, Grace M, Player, Xiaoyu, Yang, Keith D, Paulsen
Publikováno v:
Medical Physics. 49:7638-7647
We have developed a fully 3D data acquisition system for microwave breast imaging which can operate simultaneously inside a magnetic resonance imaging (MRI). MRI is used regularly for breast imaging to distinguish tumors from normal tissue. It genera
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d48c7b456390b396acee768385bad746
https://doi.org/10.1002/mp.15921
https://doi.org/10.1002/mp.15921
Publikováno v:
Diagnostics, Vol 8, Iss 3, p 61 (2018)
A breast phantom developed at the Supelec Institute was interrogated to study its suitability for microwave tomography measurements. A microwave measurement system based on 16 monopole antennas and a vector network analyzer was used to study how the
Externí odkaz:
https://doaj.org/article/21dd211e28014ed6a4df4c28b2bada24
Publikováno v:
IEEE Trans Biomed Eng
Objective: Fusion of magnetic resonance imaging (MRI) breast images with microwave tomography is accomplished through a soft prior technique, which incorporates spatial information (from MRI), i.e., accurate boundary location of different regions of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::175f28cd9629a33229cdbc4d00833962
https://doi.org/10.1109/tbme.2019.2892303
https://doi.org/10.1109/tbme.2019.2892303
Publikováno v:
IEEE Trans Microw Theory Tech
This paper describes a fast microwave tomography reconstruction algorithm based on the two-dimensional discrete dipole approximation. Synthetic data from a finite-element based solver and experimental data from a microwave imaging system are used to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::78a373cb10995a76160a51afb721769e
https://pubmed.ncbi.nlm.nih.gov/34176958
https://pubmed.ncbi.nlm.nih.gov/34176958
Publikováno v:
2021 15th European Conference on Antennas and Propagation (EuCAP).
We have developed a new technique for computing the Jacobian matrix for microwave tomography systems which is orders of magnitude faster than conventional approaches. It exploits concepts from the nodal adjoint method and previous observations that r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::28eb4b8d5ad143559a4eaa11119dc56e
https://doi.org/10.23919/eucap51087.2021.9411451
https://doi.org/10.23919/eucap51087.2021.9411451
Publikováno v:
Sensors, Vol 21, Iss 729, p 729 (2021)
Sensors (Basel, Switzerland)
Sensors (Basel, Switzerland)
This paper focuses on the construction of the Jacobian matrix required in tomographic reconstruction algorithms. In microwave tomography, computing the forward solutions during the iterative reconstruction process impacts the accuracy and computation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0c5d4735890c6076816b8e9c0281a29a
https://www.mdpi.com/1424-8220/21/3/729
https://www.mdpi.com/1424-8220/21/3/729
Publikováno v:
IEEE Journal of Electromagnetics, RF and Microwaves in Medicine and Biology. 2:2-9
Microwave imaging is a low-cost imaging method that has shown promise for breast imaging and, in particular, neoadjuvant chemotherapy monitoring. Early studies of microwave imaging in the therapy monitoring setting are encouraging. For the neoadjuvan
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::37205d3e59fd09d9b540f1ac7b53cbaa
https://doi.org/10.1109/jerm.2017.2786025
https://doi.org/10.1109/jerm.2017.2786025
Publikováno v:
Medical Physics. 44:4239-4251
Purpose: The authors have developed a new two-step microwave tomographic image reconstruction process specifically designed to incorporate logarithmic transformed microwave imaging algorithms as a means of significantly improving spatial resolution a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d6ff523d98a3cc07920c293ad2bfd247
https://doi.org/10.1002/mp.12384
https://doi.org/10.1002/mp.12384