Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Sarma V.S. Akella"'
Publikováno v:
Journal of Magnetic Resonance Imaging. 22:318-323
Purpose To measure the proton magnetization transfer ratio (MTR) maps in control and collagen-depleted bovine patellar cartilage specimens as a function of cartilage depth during mechanical compression. Materials and Methods One-dimensional proton pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1ed2f22abbebd18ff488a56636080d10
https://doi.org/10.1002/jmri.20377
https://doi.org/10.1002/jmri.20377
Autor:
J. Bruce Kneeland, Arijitt Borthakur, Sarma V.S. Akella, Andrew J. Wheaton, Gwen Lech, Ravinder R. Regatte, Ravinder Reddy
Publikováno v:
Academic Radiology. 11:741-749
Rationale and objectives To determine the in vivo feasibility of quantifying early degenerative changes in patellofemoral joint of symptomatic human knee using spin-lattice relaxation time in the rotating frame (T 1ρ ) magnetic resonance imaging (MR
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f30718b215d99fa0444799341630a5e3
https://doi.org/10.1016/j.acra.2004.03.051
https://doi.org/10.1016/j.acra.2004.03.051
Autor:
Ravinder R. Regatte, Andrew J. Wheaton, Erik M. Shapiro, Sarma V.S. Akella, Arijitt Borthakur, J. Bruce Kneeland, Ravinder Reddy
Publikováno v:
Radiology. 231:900-905
The feasibility of using sodium magnetic resonance (MR) imaging to detect proteoglycan loss in early-stage osteoarthritis is evaluated. Fixed charge density (FCD) maps were calculated from sodium MR imaging data collected in nine healthy volunteers a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::33aa7ef005c0d4d665f3dd4aebbb84b4
https://doi.org/10.1148/radiol.2313030521
https://doi.org/10.1148/radiol.2313030521
Autor:
Andrew J. Wheaton, Arijitt Borthakur, J. Bruce Kneeland, Ravinder R. Regatte, Sarma V.S. Akella, Ravinder Reddy
Publikováno v:
Magnetic Resonance in Medicine. 52:1453-1458
A multislice spin-lock (MS-SL) pulse sequence is implemented on a clinical scanner to acquire multiple images with spin-lock-generated contrast of the knee joints of six healthy human subjects. The MS-SL sequence produces images with T1ρ contrast wi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::66cb8fd353b97e780d83700a9318332a
https://doi.org/10.1002/mrm.20268
https://doi.org/10.1002/mrm.20268
Publikováno v:
Radiology. 229:269-274
The purpose of this study was to demonstrate the feasibility of computing three-dimensional relaxation maps of spin-lattice relaxation time in the rotating frame (T1rho) from in vivo magnetic resonance (MR) images of the human patellofemoral joint. T
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7e8e9aac314faeefb2b80da374bf3472
https://doi.org/10.1148/radiol.2291021041
https://doi.org/10.1148/radiol.2291021041
Autor:
Arijitt Borthakur, Andrew J. Wheaton, Ravinder Reddy, J. Bruce Kneeland, Sarma V.S. Akella, Ravinder R. Regatte
Publikováno v:
Journal of Magnetic Resonance Imaging. 18:336-341
PURPOSE To demonstrate the in vivo feasibility of measuring spin-lattice relaxation time in the rotating frame (T(1rho)); and T(1rho)-dispersion in human femoral cartilage. Furthermore, we aimed to compute the baseline T(1rho)-relaxation times and sp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8c55154f0f45b0cca59a8dfe79cb8d4b
https://doi.org/10.1002/jmri.10358
https://doi.org/10.1002/jmri.10358
Autor:
J. Bruce Kneeland, Sarma V.S. Akella, John S. Leigh, Arijitt Borthakur, Ravinder R. Regatte, Ravinder Reddy
Publikováno v:
Academic Radiology. 10:614-619
The purpose of this study was (a) to demonstrate the feasibility of computing T1rho maps of, and T1rho dispersion in, human wrist cartilage at MR imaging in vivo and (b) to compare T1rho and T2 weighting in terms of magnitude of relaxation times and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::96a5809e897854f40d55e19c898fd6ec
https://doi.org/10.1016/s1076-6332(03)80079-x
https://doi.org/10.1016/s1076-6332(03)80079-x
Autor:
Sridhar R. Charagundla, J. Bruce Kneeland, Ravinder Reddy, Arijitt Borthakur, Sarma V.S. Akella, Andrew J. Wheaton, Erik M. Shapiro, Ravinder R. Regatte
Publikováno v:
Journal of Magnetic Resonance Imaging. 17:730-736
Purpose To design and implement a magnetic resonance imaging (MRI) pulse sequence capable of performing three-dimensional T1ρ-weighted MRI on a 1.5-T clinical scanner, and determine the optimal sequence parameters, both theoretically and experimenta
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0f09b88ee384aa20668c800ee2a5e09b
https://doi.org/10.1002/jmri.10296
https://doi.org/10.1002/jmri.10296
Publikováno v:
Journal of Magnetic Resonance Imaging. 17:114-121
Purpose To quantify glycosaminoglycans (GAG) in intact bovine patellar cartilage using the proton spin-lock ratio imaging method. This approach exploits spin-lattice relaxation time in the rotating frame (T1ρ) imaging and T1ρ relaxivity (R1ρ). Mat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::001673d3826cf8935ccfcaa6131bc11c
https://doi.org/10.1002/jmri.10228
https://doi.org/10.1002/jmri.10228
Publikováno v:
Academic Radiology. 9:1388-1394
Rationale and Objectives The authors performed this study to (a) measure changes in T2 relaxation rates, signal-to-noise ratio (SNR), and contrast with sequential depletion of proteoglycan in cartilage; (b) determine whether there is a relationship b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e2eb96fd49351a308f784ae9a219e0db
https://doi.org/10.1016/s1076-6332(03)80666-9
https://doi.org/10.1016/s1076-6332(03)80666-9