Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Paul Kokeny"'
Publikováno v:
Magnetic Resonance Imaging. 95:125
Publikováno v:
Magnetic Resonance Imaging. 54:32-45
Purpose A method of removing the background phase with a reference phantom but without overcorrecting the induced phase from objects of interest is proposed. Several factors during the imaging procedure and post-processing are investigated for their
Publikováno v:
Magnetic Resonance Imaging. 48:129-137
Modeling MRI signal behaviors in the presence of discrete magnetic particles is important, as magnetic particles appear in nanoparticle labeled cells, contrast agents, and other biological forms of iron. Currently, many models that take into account
Publikováno v:
Magnetic resonance imaging. 61
Purpose: When an object contains a distribution of discrete magnetic inclusions with a constant susceptibility, the MRI signal inside the object may no longer be determined analytically by assuming that the object is uniform or magnetic inclusions ar
Autor:
Yu Chung N Cheng, Paul Kokeny, Gavin Lawes, He Xie, Saifeng Liu, Ching Yi Hsieh, Maheshika Palihawadana Arachchige, E. Mark Haacke
Publikováno v:
Magnetic Resonance in Medicine. 76:1263-1269
Purpose This work quantifies magnetic susceptibilities and additional frequency shifts derived from different samples. Methods Twenty samples inside long straws were imaged with a multiecho susceptibility weighted imaging and analyzed with two approa
Autor:
E. Mark Haacke, Paul Kokeny, Maria Marcella Laganà, David Hubbard, Anamika Chaudhary, Pietro Cecconi, Wei Feng, Deepa Balagurunathan, David Utriainen
Publikováno v:
Current Neurovascular Research. 11:349-358
We studied cerebrospinal fluid (CSF) flow dynamics at the cervical level in association with internal jugular veins (IJV) flow for 92 patients with multiple sclerosis (MS). Phase contrast magnetic resonance imaging was used to quantify flow of the CS
Publikováno v:
Magnetic resonance imaging. 35
Cells labeled by super paramagnetic iron-oxide (SPIO) nanoparticles are more easily seen in gradient echo MR images, but it has not been shown that the amount of nanoparticles or the number of cells can be directly quantified from MR images. This wor
Autor:
He, Xie, Yu-Chung N, Cheng, Paul, Kokeny, Saifeng, Liu, Ching-Yi, Hsieh, E Mark, Haacke, Maheshika, Palihawadana Arachchige, Gavin, Lawes
Publikováno v:
Magnetic resonance in medicine. 76(4)
This work quantifies magnetic susceptibilities and additional frequency shifts derived from different samples.Twenty samples inside long straws were imaged with a multiecho susceptibility weighted imaging and analyzed with two approaches for comparis
Quantifying flow from phase-contrast MRI (PC-MRI) data requires that the vessels of interest be segmented. The estimate of the vessel area will dictate the type and magnitude of the error sources that affect the flow measurement. These sources of err
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fb07e603be1d7fcc1906988dcaf2bdce
https://europepmc.org/articles/PMC4293330/
https://europepmc.org/articles/PMC4293330/
Autor:
Yu Chung N Cheng, Yang Xuan, Paul Kokeny, P Jella, Ching Yi Hsieh, Zahid Latif, He Xie, M Haacke
Publikováno v:
Medical Physics. 42:3216-3216
Purpose: Our quick study here is to validate whether the quantified magnetic moments of the same object are the same from different MRI machines and rf head coils. Methods: We constructed a gel phantom consisting of an empty straw with a diameter of