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Publications
1995
Reddy R, Stolpen AH, Leigh JS. Detection of 17O by proton T1 rho dispersion imaging. J Magn Reson B 1995;108(3):276-279.
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&dopt=Citation&list_uids=7670758
1997
Duvvuri U, Reddy R, Patel SD, Kaufman JH, Kneeland JB, Leigh JS. T1rho-relaxation in articular cartilage: effects of enzymatic degradation. Magn Reson Med 1997;38(6):863-867.
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&dopt=Citation&list_uids=9402184
Insko EK, Reddy R, Leigh JS. High resolution, short echo time sodium imaging of articular cartilage. J Magn Reson Imaging 1997;7(6):1056-1059.
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&dopt=Citation&list_uids=9400849
Noyszewski EA, Chen EL, Reddy R, Wang Z, Leigh JS. A simplified sequence for observing deoxymyoglobin signals in vivo: myoglobin excitation with dynamic unexcitation and saturation of water and fat (MEDUSA). Magn Reson Med 1997;38(5):788-792.
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&dopt=Citation&list_uids=9358453
Reddy R, Insko EK, Leigh JS. Triple quantum sodium imaging of articular cartilage. Magn Reson Med 1997;38(2):279-284.
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&dopt=Citation&list_uids=9256109
1998
Duvvuri U, Kaufman JH, Patel SD, Bolinger L, Kneeland JB, Leigh JS, Reddy R. Sodium multiple quantum spectroscopy of articular cartilage: effects of mechanical compression. Magn Reson Med 1998;40(3):370-375.
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&dopt=Citation&list_uids=9727939
1999
Dimitrov IE, Charagundla SR, Rizi R, Reddy R, Leigh JS. An MR imaging method for simultaneous measurement of gaseous diffusion constant and longitudinal relaxation time. Magn Reson Imaging 1999;17(2):267-273.
Regatte RR, Kaufman JH, Noyszewski EA, Reddy R. Sodium and proton MR properties of cartilage during compression. J Magn Reson Imaging 1999;10(6):961-967.
2000
Borthakur A, Shapiro EM, Beers J, Kudchodkar S, Kneeland JB, Reddy R. Sensitivity of MRI to proteoglycan depletion in cartilage: comparison of sodium and proton MRI. Osteoarthritis Cartilage 2000;8(4):288-293.
Shapiro EM, Borthakur A, Reddy R. MR imaging of RF heating using a paramagnetic doped agarose phantom. Magma 2000;10(2):114-121.
2001
Akella SV, Regatte RR, Gougoutas AJ, Borthakur A, Shapiro EM, Kneeland JB, Leigh JS, Reddy R. Proteoglycan-induced changes in T1rho-relaxation of articular cartilage at 4T. Magn Reson Med 2001;46(3):419-423.
2002
Borthakur A, Shapiro EM, Akella SV, Gougoutas A, Kneeland JB, Reddy R. Quantifying sodium in the human wrist in vivo by using MR imaging. Radiology 2002;224(2):598-602.
Borthakur A, Shapiro EM, Beers J, Kudchodkar S, Kneeland JB, Reddy R. Effect of IL-1beta-induced macromolecular depletion on residual quadrupolar interaction in articular cartilage. J Magn Reson Imaging 2002;15(3):315-323.
Duvvuri U, Kudchodkar S, Reddy R, Leigh JS. T(1rho) relaxation can assess longitudinal proteoglycan loss from articular cartilage in vitro. Osteoarthritis Cartilage 2002;10(11):838-844.
Regatte RR, Akella SV, Borthakur A, Kneeland JB, Reddy R. Proteoglycan depletion-induced changes in transverse relaxation maps of cartilage: comparison of T2 and T1rho. Acad Radiol 2002;9(12):1388-1394.
2003
Borthakur A, Wheaton A, Charagundla SR, Shapiro EM, Regatte RR, Akella SV, Kneeland JB, Reddy R. Three-dimensional T1rho-weighted MRI at 1.5 Tesla. J Magn Reson Imaging 2003;17(6):730-736.
Charagundla SR, Borthakur A, Leigh JS, Reddy R. Artifacts in T(1rho)-weighted imaging: correction with a self-compensating spin-locking pulse. J Magn Reson 2003;162(1):113-121.
Regatte RR, Akella SV, Borthakur A, Kneeland JB, Reddy R. In vivo proton MR three-dimensional T1rho mapping of human articular cartilage: initial experience. Radiology 2003;229(1):269-274.
Regatte RR, Akella SV, Borthakur A, Reddy R. Proton spin-lock ratio imaging for quantitation of glycosaminoglycans in articular cartilage. J Magn Reson Imaging 2003;17(1):114-121.
Regatte RR, Akella SV, Wheaton AJ, Borthakur A, Kneeland JB, Reddy R. T 1 rho-relaxation mapping of human femoral-tibial cartilage in vivo. J Magn Reson Imaging 2003;18(3):336-341.
Tailor DR, Poptani H, Glickson JD, Leigh JS, Reddy R. High-resolution assessment of blood flow in murine RIF-1 tumors by monitoring uptake of H(2)(17)O with proton T(1rho)-weighted imaging. Magn Reson Med 2003;49(1):1-6.
Tailor DR, Roy A, Regatte RR, Charagundla SR, McLaughlin AC, Leigh JS, Reddy R. Indirect 17(O)-magnetic resonance imaging of cerebral blood flow in the rat. Magn Reson Med 2003;49(3):479-487.
Wheaton AJ, Borthakur A, Reddy R. Application of the keyhole technique to T1rho relaxation mapping. J Magn Reson Imaging 2003;18(6):745-749.
2004
Akella SV, Regatte RR, Wheaton AJ, Borthakur A, Reddy R. Reduction of residual dipolar interaction in cartilage by spin-lock technique. Magn Reson Med 2004;52(5):1103-1109.
Borthakur A, Charagundla SR, Wheaton A, Reddy R. T1rho-weighted MRI using a surface coil to transmit spin-lock pulses. J Magn Reson 2004;167(2):306-316.
Borthakur A, Wheaton AJ, Gougoutas AJ, Akella SV, Regatte RR, Charagundla SR, Reddy R. In vivo measurement of T1rho dispersion in the human brain at 1.5 tesla. J Magn Reson Imaging 2004;19(4):403-409.
Gougoutas AJ, Wheaton AJ, Borthakur A, Shapiro EM, Kneeland JB, Udupa JK, Reddy R. Cartilage volume quantification via Live Wire segmentation. Acad Radiol 2004;11(12):1389-1395.
Regatte RR, Akella SV, Wheaton AJ, Lech G, Borthakur A, Kneeland JB, Reddy R. 3D-T1rho-relaxation mapping of articular cartilage: in vivo assessment of early degenerative changes in symptomatic osteoarthritic subjects. Acad Radiol 2004;11(7):741-749.
Tailor DR, Baumgardner JE, Regatte RR, Leigh JS, Reddy R. Proton MRI of metabolically produced H2 17O using an efficient 17O2 delivery system. Neuroimage 2004;22(2):611-618.
Wheaton AJ, Borthakur A, Charagundla SR, Reddy R. Pulse sequence for multislice T1rho-weighted MRI. Magn Reson Med 2004;51(2):362-369.
Wheaton AJ, Borthakur A, Corbo M, Charagundla SR, Reddy R. Method for reduced SAR T1rho-weighted MRI. Magn Reson Med 2004;51(6):1096-1102.
Wheaton AJ, Borthakur A, Corbo MT, Moonis G, Melhem E, Reddy R. T2rho-weighted contrast in MR images of the human brain. Magn Reson Med 2004;52(6):1223-1227.
Wheaton AJ, Borthakur A, Dodge GR, Kneeland JB, Schumacher HR, Reddy R. Sodium magnetic resonance imaging of proteoglycan depletion in an in vivo model of osteoarthritis. Acad Radiol 2004;11(1):21-28.
Wheaton AJ, Borthakur A, Kneeland JB, Regatte RR, Akella SV, Reddy R. In vivo quantification of T1rho using a multislice spin-lock pulse sequence. Magn Reson Med 2004;52(6):1453-1458.
Wheaton AJ, Borthakur A, Shapiro EM, Regatte RR, Akella SV, Kneeland JB, Reddy R. Proteoglycan loss in human knee cartilage: quantitation with sodium MR imaging--feasibility study. Radiology 2004;231(3):900-905.
2005
Wheaton AJ, Dodge GR, Borthakur A, Kneeland JB, Schumacher HR, Reddy R. Detection of changes in articular cartilage proteoglycan by T(1rho) magnetic resonance imaging. J Orthop Res 2005;23(1):102-108.
Wheaton AJ, Dodge GR, Elliott DM, Nicoll SB, Reddy R. Quantification of cartilage biomechanical and biochemical properties via T1rho magnetic resonance imaging. Magn Reson Med 2005;54(5):1087-1093.
2006
Borthakur A, Hulvershorn J, Gualtieri E, Wheaton AJ, Charagundla S, Elliott MA, Reddy R. A pulse sequence for rapid in vivo spin-locked MRI. J Magn Reson Imaging 2006;23(4):591-596.
