Zobrazeno 1 - 10
of 26
pro vyhledávání: '"S. E. Solis-Najera"'
Autor:
L. Medina, Alfredo O. Rodriguez, F. Vazquez, Richard L. Martin, O. Marrufo, S. E. Solis-Najera
Publikováno v:
Applied Magnetic Resonance. 51:749-757
A multi-square slot surface coil was developed for rodent MRI at 11.7 T. The coil prototype was 20 mm in diameter with six square slots. Electromagnetic simulations of the slotted and circular coils were conducted to evaluate the signal-to-noise rati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::acb3908a98d458ee137b37fd43e07d4c
https://doi.org/10.1007/s00723-020-01217-x
https://doi.org/10.1007/s00723-020-01217-x
Publikováno v:
Medical physicsREFERENCES. 49(1)
PURPOSE We report a method based on the traveling-wave MRI approach, in order to acquire images of human lower limbs with an external waveguide at 3 T. METHODS We use a parallel-plate waveguide and an RF surface coil for reception, while a whole-body
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a1e13d5336c1bdc309a27ee25c6cba48
https://pubmed.ncbi.nlm.nih.gov/34633673
https://pubmed.ncbi.nlm.nih.gov/34633673
Publikováno v:
Journal of Physics: Conference Series. 2307:012036
Unmonitored cardiac images of a rat were acquired using a standard gradient echo sequences to study the artefact ghosting mainly caused by heart and respiration motion. All imaging experiments were performed using a transceiver circular-shaped coil a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9362298977567e6137b328159e5fd5f7
https://doi.org/10.1088/1742-6596/2307/1/012036
https://doi.org/10.1088/1742-6596/2307/1/012036
Autor:
L. Medina, Jaime Fabian Vázquez de la Rosa, Estibaliz Margarita Ramírez Vázquez, Alfredo O. Rodriguez, S. E. Solis-Najera, Juan Alberto Martínez Martínez
Publikováno v:
PROCEEDINGS OF THE XVI MEXICAN SYMPOSIUM ON MEDICAL PHYSICS.
In this paper, a modified radio frequency (RF) coil version is presented to be suitable to work at 900 MHz. The proposed coil is based on the Petal Surface Coil and Petal Resonator Surface Coil, whose resonant frequencies were 22 MHz and 64 MHz, resp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1e763f9e4db50a03fdeedbb8032f8468
https://doi.org/10.1063/5.0051147
https://doi.org/10.1063/5.0051147
Autor:
Rodrigo Martin, Alejandro Villareal, F. Vazquez, S. E. Solis-Najera, Alfredo O. Rodriguez, Oscar Rene Marrufo Melendez
Publikováno v:
Electronics, Vol 10, Iss 295, p 295 (2021)
Electronics
Volume 10
Issue 3
Electronics
Volume 10
Issue 3
Split ring resonators (SRRs) have been used extensively in metamaterials, showing a strong localization and enhancement of fields, which significantly improves the sensitivity and resolution of the electromagnetic field sensors. We propose the develo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::357edef247892fd7397aff75391a7270
https://doi.org/10.3390/electronics10030295
https://doi.org/10.3390/electronics10030295
Publikováno v:
Journal of Physics: Conference Series. 1723:012057
Proton Magnetic Resonance Spectroscopy (MRS) phantoms are an important tool for quality assurance and reliability. Some of the contents are not easily available in some countries due to some company policies. We built a phantom using N-Acetyl-DL-aspa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::440f58fe2565735e121b51e5cac30bb3
https://doi.org/10.1088/1742-6596/1723/1/012057
https://doi.org/10.1088/1742-6596/1723/1/012057
Publikováno v:
Measurement Science Review, Vol 16, Iss 6, Pp 294-299 (2016)
A surface radio frequency coil was developed for small animal image acquisition in a pre-clinical magnetic resonance imaging system at 7 T. A flexible coil composed of two circular loops was developed to closely cover the object to be imaged. Electro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5111728945bac502bb79cadc2029b471
https://doi.org/10.1515/msr-2016-0037
https://doi.org/10.1515/msr-2016-0037
Publikováno v:
2018 International Conference on Electromagnetics in Advanced Applications (ICEAA).
Metamaterial-inspired anttenas offer the possibility to improve the RF coil performance to acquire magnetic resonance images at high field. Transmission line (TL) theory used to study composite right/left hand structures, together with Mansfield’s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3aa0a39a2998cd30a60f81a5d66ffc65
https://doi.org/10.1109/iceaa.2018.8520363
https://doi.org/10.1109/iceaa.2018.8520363
Autor:
O. Marrufo, Rodrigo Martin, Lydia M. Zopf, L. Medina, S. E. Solis-Najera, Alfredo O. Rodriguez, F. Vazquez, Jelena Lazovic
Publikováno v:
2018 International Conference on Electromagnetics in Advanced Applications (ICEAA).
The travelling-wave MRI approach is an alternative to overcome the B 1 inhomogeneity at ultra high field MRI for human applications. More recently, this concept has been also used with small-bore MR imagers. Experiments have been mainly conducted usi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::da783731b1af1b3b36a618df82b4be84
https://doi.org/10.1109/iceaa.2018.8520346
https://doi.org/10.1109/iceaa.2018.8520346
Publikováno v:
Magnetic Resonance Materials in Physics, Biology and Medicine. 28:599-608
A scaled-down slotted surface radio frequency (RF) coil was built, and the specific absorbance rate (SAR) in 100 mg of tissue (SAR100 mg) produced in a rat brain phantom was computed at 7 T. A slotted coil 2-cm in diameter with six circular slots was
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5478c500c949457a1198d61d9b27619b
https://doi.org/10.1007/s10334-015-0501-8
https://doi.org/10.1007/s10334-015-0501-8