Zobrazeno 1 - 10
of 94
pro vyhledávání: '"Peter M. Joseph"'
Autor:
Peter M. Joseph
Publikováno v:
Environment International, Vol 33, Iss 8, Pp 1090-1106 (2007)
We review studies of the effects of low ambient ozone concentrations on morbidity that found a negative coefficient for ozone concentration. We call this a Paradoxical Ozone Association (POA). All studies were in regions with methyl ether in gasoline
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::11811366a70708e185d6a34b43520148
https://doi.org/10.1016/j.envint.2007.07.001
https://doi.org/10.1016/j.envint.2007.07.001
Autor:
Peter M. Joseph, Christopher Ruth
Publikováno v:
Medical Physics. 22:1977-1982
Lanthanide-based compounds such as Gd-DTPA are currently used as contrast agents in MRI. Recent experiments using CT and transmission radiography show that Gd agents can increase image contrast by up to a factor of 2 relative to more commonly used io
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::62b055130f0805ef9123d1799a35a4f7
https://doi.org/10.1118/1.597495
https://doi.org/10.1118/1.597495
Autor:
Dongfeng Lu, Peter M. Joseph
Publikováno v:
Magnetic Resonance Imaging. 13:241-249
A technique is presented to increase the signal-to-noise ratio (SNR) in two-dimensional (2D), phase-encoded imaging at low SNR. The essence of this technique is to combine multiple echoes in the time domain. As analyzed in the paper, phase discrepanc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2debe111354b576642407471d854d2c4
https://doi.org/10.1016/0730-725x(94)00110-o
https://doi.org/10.1016/0730-725x(94)00110-o
Autor:
David B. Hackney, John C. Ford, Christopher M. Hand, Ronald S. Markowitz, Perry Black, Peter M. Joseph
Publikováno v:
Journal of Computer Assisted Tomography. 18:357-362
OBJECTIVE This study was conducted to determine the association between lesion length measured on MRI and the severity of mechanical injury in a rat model of spinal cord trauma. MATERIALS AND METHODS Sprague-Dawley rats were subjected to a modified A
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::81b4a75bf8fb97649bd9f2410083a63d
https://doi.org/10.1097/00004728-199405000-00004
https://doi.org/10.1097/00004728-199405000-00004
Autor:
David B. Hackney, John C. Ford, Peter M. Joseph, Hernan Jara, Perry Black, Christopher M. Hand, David C. Alsop
Publikováno v:
Magnetic Resonance in Medicine. 31:488-494
Apparent diffusion coefficients (ADC) were measured in a rat spinal cord weight-drop injury model. After sacrifice, the spinal cords were fixed in situ and excised for MR imaging and ADC measurement. Diffusion is anisotropic in normal gray and white
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a0f1dd99d0db6a6cd9bdd2343a7aab35
https://doi.org/10.1002/mrm.1910310504
https://doi.org/10.1002/mrm.1910310504
Autor:
Christopher M. Hand, Megan Phelan, David B. Hackney, Ronald S. Markowitz, John C. Ford, Peter M. Joseph, Perry Black, Stacy L. Tabor, David C. Alsop
Publikováno v:
Magnetic Resonance in Medicine. 31:218-223
We have developed an implanted radiofrequency coil to obtain high resolution in vivo MR images at 1.9 Tesla of rat spinal cords that have been injured using a standardized weight drop technique. The signal-to-noise ratio and motion artifact suppressi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fdf42595383ef8640dddcd85e179248a
https://doi.org/10.1002/mrm.1910310216
https://doi.org/10.1002/mrm.1910310216
Publikováno v:
Investigative Radiology. 28:710-719
RATIONALE AND OBJECTIVES In-vivo assessment of tumor vascular volume may provide useful information for treatment planning or the assessment of treatment effectiveness. The goals of our study were to measure percent vascular volume in two experimenta
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6e92a6b61464286f9acc15dd14429d8c
https://doi.org/10.1097/00004424-199308000-00012
https://doi.org/10.1097/00004424-199308000-00012
Autor:
Dongfeng Lu, Peter M. Joseph
Publikováno v:
Magnetic Resonance in Medicine. 19:180-185
A technique was developed to change the resonant frequency of a rotating field birdcage coil from 19F resonance (76.14 MHz) to 1H resonance (80.92 MHz). This was done by inserting an additional shield with a smaller radius on the coil which resonates
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::63252cee7c7a1ad25121c5ab90d13b02
https://doi.org/10.1002/mrm.1910190117
https://doi.org/10.1002/mrm.1910190117
Autor:
Andrew R. Bogdan, Peter M. Joseph
Publikováno v:
Journal of Magnetic Resonance (1969). 91:527-538
A novel radiofrequency coil design which is especially useful for NMR imaging of sodium in small samples is described. The structure is neither a saddle nor a birdcage coil type, but rather consists of a series of tuned loops. In principle, the loops
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::da37ee39cbdd146c4d73c638e8ce0cac
https://doi.org/10.1016/0022-2364(91)90379-8
https://doi.org/10.1016/0022-2364(91)90379-8
Autor:
Joel L. Frazier, David S. Titelbaum, Robert I. Grossman, Peter M. Joseph, Leonard T. Yu, Mark J. Brown, Don LaRossa
Publikováno v:
Southern Medical Journal. 83:2S-51
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::06567ff52a17cafdbe3734733875e97b
https://doi.org/10.1097/00007611-199009001-00200
https://doi.org/10.1097/00007611-199009001-00200