Zobrazeno 1 - 10
of 48
pro vyhledávání: '"William B. Handler"'
Publikováno v:
Magnetic Resonance in Medicine. 87:3011-3021
Delta relaxation-enhanced MR (dreMR) is a field-cycling quantitative method for molecular imaging. The dreMR method uses a BA solenoid produces the bulk field shift, and a boundary element method is employed to design in-series shim and shield layers
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::facf5da99d4c96738fd25beb7295529f
https://doi.org/10.1002/mrm.29178
https://doi.org/10.1002/mrm.29178
Publikováno v:
Brain and Mind Institute Researchers' Publications
In this article, an ultralow-frequency electric field probe capable of measuring time-varying gradient coil induced electric fields in a tissue-mimicking material was constructed, calibrated, and validated. This probe consisted of a 2 cm short dipole
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::30735d35248ea775aaec4113aaa8d843
https://doi.org/10.1109/tap.2020.2963940
https://doi.org/10.1109/tap.2020.2963940
Publikováno v:
Brain and Mind Institute Researchers' Publications
This paper presents the design and validation of a tuned time-domain electric field probe for mapping of radio frequency (RF) exposures used during testing of magnetic resonance imaging (MRI) conditional medical devices. The probes were 5 and 10 mm s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b52ec6f7e2721458d1abc41512a77ae8
https://doi.org/10.1109/tap.2018.2888988
https://doi.org/10.1109/tap.2018.2888988
Publikováno v:
Brain and Mind Institute Researchers' Publications
In this work a 21 MHz radiofrequency (RF) exposure system was designed, constructed and evaluated as a testing platform for MRI device safety. The exposure system consisted of a birdcage coil powered in quadrature by a power system consisting of a hy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9a3c19b31208c973cfb366ebb5cfdebd
https://doi.org/10.1002/mmce.22521
https://doi.org/10.1002/mmce.22521
Publikováno v:
Brain and Mind Institute Researchers' Publications
CCECE
CCECE
As a part of this work a small patch antenna probe was developed to measure the variation in the electric field produced by gradient coils within an MRI in the presence of any active implantable medical devices (AIMDs). This probe was designed, fabri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::639a0750fa2e174d4bfd3e2625b905da
https://ir.lib.uwo.ca/brainpub/727
https://ir.lib.uwo.ca/brainpub/727
Autor:
Ryan Chaddock, L. Martyn Klassen, Blaine A. Chronik, Brian Dalrymple, Justin Peterson, William B. Handler, Joseph S. Gati, Geron Andre Bindseil, Chad T. Harris, Kyle M. Gilbert, Frank Van Sas
Publikováno v:
Brain and Mind Institute Researchers' Publications
A gradient coil with integrated second and third order shims has been designed and constructed for use inside an actively shielded 310 mm horizontal bore 9.4 T small animal MRI. An extension of the boundary element method, to minimise the power depos
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::90317a4569676ba7c4de92b72c9484dd
https://ir.lib.uwo.ca/brainpub/719
https://ir.lib.uwo.ca/brainpub/719
Publikováno v:
Brain and Mind Institute Researchers' Publications
© 2018 IEEE. This paper presents the design and construction of a magnetic field probe with an active balun for conditional testing of medical devices within a magnetic resonance imaging (MRI). The magnetic field probe was designed using a small loo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::43d19a65606c0293fdb703eb852901e6
https://ir.lib.uwo.ca/brainpub/383
https://ir.lib.uwo.ca/brainpub/383
Reliable RF B/E-Field Probes for Time-Domain Monitoring of EM Exposure During Medical Device Testing
Publikováno v:
Brain and Mind Institute Researchers' Publications
This paper presents electric and magnetic probes to measure radio frequency (RF) electric and magnetic fields for measuring the time-varying RF fields used in magnetic resonance imaging (MRI). A small single loop (2 cm) and short dipole antenna (2 cm
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f6f1c4b0dd8bb6ba62388da9d44dd62f
https://doi.org/10.1109/tap.2017.2723085
https://doi.org/10.1109/tap.2017.2723085
Publikováno v:
Electronics Letters. 54:16-18
A new RF B/H field probe for time-domain monitoring of RF electromagnetic-radiated exposure during medical device testing inside the lossy tissue-mimicking material is presented. The probe was tuned and matched for a centre frequency of 127.6 MHz to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eb3bae158e3d21e80f7a1cdc5e9473d8
https://doi.org/10.1049/el.2017.3568
https://doi.org/10.1049/el.2017.3568
Autor:
Ryan Chaddock, Arjama Halder, William B. Handler, Blaine A. Chronik, Ali Attaran, Paul Christiaans
Publikováno v:
CCECE
In this work ultra-low frequency probes for measuring time-varying electric field produced in gradient coils were designed, fabricated and tested. A 2 cm short dipole antenna followed by an instrumentation amplifier was chosen to measure the electric
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2966699887bb6e1f20a5de2abca13ffa
https://doi.org/10.1109/ccece.2019.8861533
https://doi.org/10.1109/ccece.2019.8861533