Zobrazeno 1 - 10
of 18
pro vyhledávání: '"J R Fitzsimmons"'
Publikováno v:
Concepts in Magnetic Resonance. :24-27
The continual march to higher magnetic fields for MRI/S has brought about a change in RF coil methodology that incorporates the use of cavity designs. One such design, the ReCav coil, has shown improvement in signal-to-noise (SNR) over standard low-p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e2bdd3ffd10af08540ee95f5d6173c5e
https://doi.org/10.1002/cmr.b.10074
https://doi.org/10.1002/cmr.b.10074
Autor:
D M, Peterson, C E, Carruthers, B L, Wolverton, K, Meister, M, Werner, G R, Duensing, J R, Fitzsimmons
Publikováno v:
Magnetic resonance in medicine. 42(2)
A transceive RF birdcage coil designed for very high field with a novel matching scheme was implemented with the specific geometry chosen for the human knee. This coil design incorporates a hinge for greater patient accessibility. Volunteer human sub
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::ebb116dd12dd910780da81819ef64342
https://pubmed.ncbi.nlm.nih.gov/10440944
https://pubmed.ncbi.nlm.nih.gov/10440944
Publikováno v:
Psychophysiology. 35(2)
Functional activity in the visual cortex was assessed using functional magnetic resonance imaging technology while participants viewed a series of pleasant, neutral, or unpleasant pictures. Coronal images at four different locations in the occipital
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::96fd8457e7ab109ef9bc180d99b357ee
https://pubmed.ncbi.nlm.nih.gov/9529946
https://pubmed.ncbi.nlm.nih.gov/9529946
Publikováno v:
Acta Radiologica. Diagnosis. 25:501-506
In an experimental animal model of partial ureteral obstruction, three different modalities— Excretory urography, real-time ultrasound and magnetic resonance—were used for imaging of the unilateral hydronephrotic rabbit kidney. Urography demonstr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::656476f732a0753d5148dd4fbec8deaa
https://doi.org/10.1177/028418518402500609
https://doi.org/10.1177/028418518402500609
Publikováno v:
Skeletal Radiology. 13:267-270
Magnetic resonance imaging (MRI) demonstrated a fluid level within an aneurysmal bone cyst (ABC). Since the ABC contained gross blood at operation, an anticoagulated human blood sample was studied by MRI also, and a fluid level was again clearly visi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4df40186ef40316a4a3769b195c5a63f
https://doi.org/10.1007/bf00355347
https://doi.org/10.1007/bf00355347
Autor:
J. R. Fitzsimmons
Publikováno v:
Review of Scientific Instruments. 53:1338-1343
A group of circuits are described for generating the gradient control currents needed to implement NMR imaging on a conventional NMR spectrometer and computer. Software control over X, Y, and Z gradients is provided for, and a sample program is inclu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0a7db46deb4161aa5a561a3af8038287
https://doi.org/10.1063/1.1137181
https://doi.org/10.1063/1.1137181
Autor:
J M, Yancey, N, Ackerman, J V, Kaude, R E, Googe, J R, Fitzsimmons, K N, Scott, A A, Mancuso, R L, Hackett, D A, Hager, S, Caballero
Publikováno v:
Acta radiologica (Stockholm, Sweden : 1987). 28(4)
Experimental renal carcinoma was induced by percutaneous injection of VX-2 carcinoma cells into the left kidney in New Zealand white rabbits. Magnetic resonance imaging (MRI) was performed at 0.15 T before and after intravenous injection of 0.3 mmol
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::6afce00fbded89fb28cb310c462b9029
https://pubmed.ncbi.nlm.nih.gov/2958067
https://pubmed.ncbi.nlm.nih.gov/2958067
Publikováno v:
Radiology. 167(3)
The T1 and T2 relaxation times of primary tumors of the musculoskeletal system were calculated in 54 patients. No correlation was found between the relaxation values and the histopathologic type of the tumors. Lipoma had the same relaxation character
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b4a3c7d23d7a4b47dcad322b57336049
https://pubmed.ncbi.nlm.nih.gov/3363140
https://pubmed.ncbi.nlm.nih.gov/3363140
Autor:
J R, Fitzsimmons, R C, Mick
Publikováno v:
Applied radiology. 14(2)
The rapid proliferation of nuclear magnetic resonance imagers necessitates an increasingly critical look at system requirements. Image quality in its broadest sense must be determined for various types of imaging systems. We review here the physical
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::eabb3dacc41261cdc334165d2de2f107
https://pubmed.ncbi.nlm.nih.gov/10270527
https://pubmed.ncbi.nlm.nih.gov/10270527
Autor:
R E Googe, J R Fitzsimmons
Publikováno v:
Radiology. 157(3)
An analysis of the effects of multisection-multiecho imaging on signal intensity is presented using a gaussian excitation pulse. The number of sections acquired, size of the intersection gap, and the number of echoes were all varied independently to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bf72d70c14f524c17c9dba96563b85b5
https://pubmed.ncbi.nlm.nih.gov/4059565
https://pubmed.ncbi.nlm.nih.gov/4059565