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Items: 1 to 50 of 51


Effectiveness of navigator-based prospective motion correction in MPRAGE data acquired at 3T.

Sarlls JE, Lalonde F, Rettmann D, Shankaranarayanan A, Roopchansingh V, Talagala SL.

PLoS One. 2018 Jun 28;13(6):e0199372. doi: 10.1371/journal.pone.0199372. eCollection 2018.


Toward personalised diffusion MRI in psychiatry: improved delineation of fibre bundles with the highest-ever angular resolution in vivo tractography.

Callaghan F, Maller JJ, Welton T, Middione MJ, Shankaranarayanan A, Grieve SM.

Transl Psychiatry. 2018 Apr 25;8(1):91. doi: 10.1038/s41398-018-0140-8.


Comparing accuracy and reproducibility of sequential and Hadamard-encoded multidelay pseudocontinuous arterial spin labeling for measuring cerebral blood flow and arterial transit time in healthy subjects: A simulation and in vivo study.

Guo J, Holdsworth SJ, Fan AP, Lebel MR, Zun Z, Shankaranarayanan A, Zaharchuk G.

J Magn Reson Imaging. 2018 Apr;47(4):1119-1132. doi: 10.1002/jmri.25834. Epub 2017 Aug 9.


Differentiation of brain tumor-related edema based on 3D T1rho imaging.

Villanueva-Meyer JE, Barajas RF Jr, Mabray MC, Chen W, Shankaranarayanan A, Koon P, Barani IJ, Tihan T, Cha S.

Eur J Radiol. 2017 Jun;91:88-92. doi: 10.1016/j.ejrad.2017.03.022. Epub 2017 Mar 30.


Synthetic MRI for Clinical Neuroimaging: Results of the Magnetic Resonance Image Compilation (MAGiC) Prospective, Multicenter, Multireader Trial.

Tanenbaum LN, Tsiouris AJ, Johnson AN, Naidich TP, DeLano MC, Melhem ER, Quarterman P, Parameswaran SX, Shankaranarayanan A, Goyen M, Field AS.

AJNR Am J Neuroradiol. 2017 Jun;38(6):1103-1110. doi: 10.3174/ajnr.A5227. Epub 2017 Apr 27.


Reduced field-of-view DWI with robust fat suppression and unrestricted slice coverage using tilted 2D RF excitation.

Banerjee S, Nishimura DG, Shankaranarayanan A, Saritas EU.

Magn Reson Med. 2016 Dec;76(6):1668-1676. doi: 10.1002/mrm.26405. Epub 2016 Sep 21.


Repeatability Investigation of Reduced Field-of-View Diffusion-Weighted Magnetic Resonance Imaging on Thyroid Glands.

Lu Y, Hatzoglou V, Banerjee S, Stambuk HE, Gonen M, Shankaranarayanan A, Mazaheri Y, Deasy JO, Shaha AR, Tuttle RM, Shukla-Dave A.

J Comput Assist Tomogr. 2015 May-Jun;39(3):334-9. doi: 10.1097/RCT.0000000000000227.


Hadamard slice encoding for reduced-FOV diffusion-weighted imaging.

Saritas EU, Lee D, Çukur T, Shankaranarayanan A, Nishimura DG.

Magn Reson Med. 2014 Nov;72(5):1277-90. doi: 10.1002/mrm.25044. Epub 2013 Nov 21.


Pseudocontinuous arterial spin labeling with prospective motion correction (PCASL-PROMO).

Zun Z, Shankaranarayanan A, Zaharchuk G.

Magn Reson Med. 2014 Oct;72(4):1049-56. doi: 10.1002/mrm.25024. Epub 2013 Nov 14.


Navigated DENSE strain imaging for post-radiofrequency ablation lesion assessment in the swine left atria.

Schmidt EJ, Fung MM, Ciris PA, Song T, Shankaranarayanan A, Holmvang G, Gupta SN, Chaput M, Levine RA, Ruskin J, Reddy VY, D'avila A, Aletras AH, Danik SB.

Europace. 2014 Jan;16(1):133-41. doi: 10.1093/europace/eut229. Epub 2013 Sep 6.


A selective insular perfusion deficit contributes to compromised salience network connectivity in recovering alcoholic men.

Sullivan EV, Müller-Oehring E, Pitel AL, Chanraud S, Shankaranarayanan A, Alsop DC, Rohlfing T, Pfefferbaum A.

Biol Psychiatry. 2013 Oct 1;74(7):547-55. doi: 10.1016/j.biopsych.2013.02.026. Epub 2013 Apr 12.


Longitudinal restriction spectrum imaging is resistant to pseudoresponse in patients with high-grade gliomas treated with bevacizumab.

Kothari P, White NS, Farid N, Chung R, Kuperman JM, Girard HM, Shankaranarayanan A, Kesari S, McDonald CR, Dale AM.

AJNR Am J Neuroradiol. 2013 Sep;34(9):1752-1757. doi: 10.3174/ajnr.A3506. Epub 2013 Apr 11.


High-resolution diffusion-weighted imaging for monitoring breast cancer treatment response.

Wilmes LJ, McLaughlin RL, Newitt DC, Singer L, Sinha SP, Proctor E, Wisner DJ, Saritas EU, Kornak J, Shankaranarayanan A, Banerjee S, Jones EF, Joe BN, Hylton NM.

Acad Radiol. 2013 May;20(5):581-9. doi: 10.1016/j.acra.2013.01.009.


Diffusion tensor imaging and T2 relaxometry of bilateral lumbar nerve roots: feasibility of in-plane imaging.

Karampinos DC, Melkus G, Shepherd TM, Banerjee S, Saritas EU, Shankaranarayanan A, Hess CP, Link TM, Dillon WP, Majumdar S.

NMR Biomed. 2013 Jun;26(6):630-7. doi: 10.1002/nbm.2902. Epub 2012 Dec 4.


Coupling between resting cerebral perfusion and EEG.

O'Gorman RL, Poil SS, Brandeis D, Klaver P, Bollmann S, Ghisleni C, Lüchinger R, Martin E, Shankaranarayanan A, Alsop DC, Michels L.

Brain Topogr. 2013 Jul;26(3):442-57. doi: 10.1007/s10548-012-0265-7. Epub 2012 Nov 18.


Volumetric measurement of perfusion and arterial transit delay using hadamard encoded continuous arterial spin labeling.

Dai W, Shankaranarayanan A, Alsop DC.

Magn Reson Med. 2013 Apr;69(4):1014-22. doi: 10.1002/mrm.24335. Epub 2012 May 22.


Parallel and partial Fourier imaging with prospective motion correction.

Banerjee S, Beatty PJ, Zhang JZ, Shankaranarayanan A.

Magn Reson Med. 2013 Feb;69(2):421-33. doi: 10.1002/mrm.24269. Epub 2012 Apr 9.


Comparison of wideband steady-state free precession and T₂-weighted fast spin echo in spine disorder assessment at 1.5 and 3 T.

Danagoulian GS, Qin L, Nayak KS, Colen RR, Mukundan S Jr, Harris MB, Jolesz FA, Shankaranarayanan A, Copen WA, Schmidt EJ.

Magn Reson Med. 2012 Nov;68(5):1527-35. doi: 10.1002/mrm.24163. Epub 2012 Jan 27.


Pseudocontinuous arterial spin labeling with optimized tagging efficiency.

Shin DD, Liu TT, Wong EC, Shankaranarayanan A, Jung Y.

Magn Reson Med. 2012 Oct;68(4):1135-44. doi: 10.1002/mrm.24113. Epub 2012 Jan 3.


High-resolution diffusion-weighted magnetic resonance imaging in patients with locally advanced breast cancer.

Singer L, Wilmes LJ, Saritas EU, Shankaranarayanan A, Proctor E, Wisner DJ, Chang B, Joe BN, Nishimura DG, Hylton NM.

Acad Radiol. 2012 May;19(5):526-34. doi: 10.1016/j.acra.2011.11.003. Epub 2011 Dec 22.


Reduced resolution transit delay prescan for quantitative continuous arterial spin labeling perfusion imaging.

Dai W, Robson PM, Shankaranarayanan A, Alsop DC.

Magn Reson Med. 2012 May;67(5):1252-65. doi: 10.1002/mrm.23103. Epub 2011 Nov 14.


Prospective motion correction improves diagnostic utility of pediatric MRI scans.

Kuperman JM, Brown TT, Ahmadi ME, Erhart MJ, White NS, Roddey JC, Shankaranarayanan A, Han ET, Rettmann D, Dale AM.

Pediatr Radiol. 2011 Dec;41(12):1578-82. doi: 10.1007/s00247-011-2205-1. Epub 2011 Jul 21.


Sensitivity calibration with a uniform magnetization image to improve arterial spin labeling perfusion quantification.

Dai W, Robson PM, Shankaranarayanan A, Alsop DC.

Magn Reson Med. 2011 Dec;66(6):1590-600. doi: 10.1002/mrm.22954. Epub 2011 Apr 26.


Arterial spin labelling reveals an abnormal cerebral perfusion pattern in Parkinson's disease.

Melzer TR, Watts R, MacAskill MR, Pearson JF, Rüeger S, Pitcher TL, Livingston L, Graham C, Keenan R, Shankaranarayanan A, Alsop DC, Dalrymple-Alford JC, Anderson TJ.

Brain. 2011 Mar;134(Pt 3):845-55. doi: 10.1093/brain/awq377. Epub 2011 Feb 9.


Time-resolved vessel-selective digital subtraction MR angiography of the cerebral vasculature with arterial spin labeling.

Robson PM, Dai W, Shankaranarayanan A, Rofsky NM, Alsop DC.

Radiology. 2010 Nov;257(2):507-15. doi: 10.1148/radiol.10092333.


Modified pulsed continuous arterial spin labeling for labeling of a single artery.

Dai W, Robson PM, Shankaranarayanan A, Alsop DC.

Magn Reson Med. 2010 Oct;64(4):975-82. doi: 10.1002/mrm.22363.


Prospective motion correction of high-resolution magnetic resonance imaging data in children.

Brown TT, Kuperman JM, Erhart M, White NS, Roddey JC, Shankaranarayanan A, Han ET, Rettmann D, Dale AM.

Neuroimage. 2010 Oct 15;53(1):139-45. doi: 10.1016/j.neuroimage.2010.06.017. Epub 2010 Jun 11.


Improved 3-Tesla cardiac cine imaging using wideband.

Lee HL, Shankaranarayanan A, Pohost GM, Nayak KS.

Magn Reson Med. 2010 Jun;63(6):1716-22. doi: 10.1002/mrm.22384.


Volumetric cerebral perfusion imaging in healthy adults: regional distribution, laterality, and repeatability of pulsed continuous arterial spin labeling (PCASL).

Pfefferbaum A, Chanraud S, Pitel AL, Shankaranarayanan A, Alsop DC, Rohlfing T, Sullivan EV.

Psychiatry Res. 2010 Jun 30;182(3):266-73. doi: 10.1016/j.pscychresns.2010.02.010. Epub 2010 May 20.


Cerebral blood flow in posterior cortical nodes of the default mode network decreases with task engagement but remains higher than in most brain regions.

Pfefferbaum A, Chanraud S, Pitel AL, Müller-Oehring E, Shankaranarayanan A, Alsop DC, Rohlfing T, Sullivan EV.

Cereb Cortex. 2011 Jan;21(1):233-44. doi: 10.1093/cercor/bhq090. Epub 2010 May 19.


Improved coronary MR angiography using wideband steady state free precession at 3 tesla with sub-millimeter resolution.

Lee HL, Shankaranarayanan A, Pohost GM, Nayak KS.

J Magn Reson Imaging. 2010 May;31(5):1224-9. doi: 10.1002/jmri.22150.


Galpha q allosterically activates and relieves autoinhibition of p63RhoGEF.

Shankaranarayanan A, Boguth CA, Lutz S, Vettel C, Uhlemann F, Aittaleb M, Wieland T, Tesmer JJ.

Cell Signal. 2010 Jul;22(7):1114-23. doi: 10.1016/j.cellsig.2010.03.006. Epub 2010 Mar 7.


A comparative analysis of dynamic grids vs. virtual grids using the A3pviGrid framework.

Shankaranarayanan A, Amaldas C.

Bioinformation. 2010 Nov 1;5(5):186-90.


PROMO: Real-time prospective motion correction in MRI using image-based tracking.

White N, Roddey C, Shankaranarayanan A, Han E, Rettmann D, Santos J, Kuperman J, Dale A.

Magn Reson Med. 2010 Jan;63(1):91-105. doi: 10.1002/mrm.22176.


Reliability and precision of pseudo-continuous arterial spin labeling perfusion MRI on 3.0 T and comparison with 15O-water PET in elderly subjects at risk for Alzheimer's disease.

Xu G, Rowley HA, Wu G, Alsop DC, Shankaranarayanan A, Dowling M, Christian BT, Oakes TR, Johnson SC.

NMR Biomed. 2010 Apr;23(3):286-93. doi: 10.1002/nbm.1462.


Perfusion MRI of brain tumours: a comparative study of pseudo-continuous arterial spin labelling and dynamic susceptibility contrast imaging.

Järnum H, Steffensen EG, Knutsson L, Fründ ET, Simonsen CW, Lundbye-Christensen S, Shankaranarayanan A, Alsop DC, Jensen FT, Larsson EM.

Neuroradiology. 2010 Apr;52(4):307-17. doi: 10.1007/s00234-009-0616-6. Epub 2009 Oct 20.


Structure and mechanism of a Na+-independent amino acid transporter.

Shaffer PL, Goehring A, Shankaranarayanan A, Gouaux E.

Science. 2009 Aug 21;325(5943):1010-4. doi: 10.1126/science.1176088. Epub 2009 Jul 16.


Assembly of high order G alpha q-effector complexes with RGS proteins.

Shankaranarayanan A, Thal DM, Tesmer VM, Roman DL, Neubig RR, Kozasa T, Tesmer JJ.

J Biol Chem. 2008 Dec 12;283(50):34923-34. doi: 10.1074/jbc.M805860200. Epub 2008 Oct 20.


Structure of Galphaq-p63RhoGEF-RhoA complex reveals a pathway for the activation of RhoA by GPCRs.

Lutz S, Shankaranarayanan A, Coco C, Ridilla M, Nance MR, Vettel C, Baltus D, Evelyn CR, Neubig RR, Wieland T, Tesmer JJ.

Science. 2007 Dec 21;318(5858):1923-7.


Snapshot of activated G proteins at the membrane: the Galphaq-GRK2-Gbetagamma complex.

Tesmer VM, Kawano T, Shankaranarayanan A, Kozasa T, Tesmer JJ.

Science. 2005 Dec 9;310(5754):1686-90.


Helical MR: continuously moving table axial imaging with radial acquisitions.

Shankaranarayanan A, Herfkens R, Hargreaves BM, Polzin JA, Santos JM, Brittain JH.

Magn Reson Med. 2003 Nov;50(5):1053-60.


A method for fast 3D tracking using tuned fiducial markers and a limited projection reconstruction FISP (LPR-FISP) sequence.

Flask C, Elgort D, Wong E, Shankaranarayanan A, Lewin J, Wendt M, Duerk JL.

J Magn Reson Imaging. 2001 Nov;14(5):617-27.


Segmented k-space and real-time cardiac cine MR imaging with radial trajectories.

Shankaranarayanan A, Simonetti OP, Laub G, Lewin JS, Duerk JL.

Radiology. 2001 Dec;221(3):827-36.


[Comparison of susceptibility artefacts of different radiofrequency electrodes at O.2 T. Influence of electrode positioning, pulse sequence and image reconstruction methods].

Aschoff AJ, Wendt M, Merkle EM, Shankaranarayanan A, Chung YC, Duerk JL, Lewin JS.

Rofo. 2001 Mar;173(3):257-62. German.


Two-step navigatorless correction algorithm for radial k-space MRI acquisitions.

Shankaranarayanan A, Wendt M, Lewin JS, Duerk JL.

Magn Reson Med. 2001 Feb;45(2):277-88.


Radial keyhole sequences for low field projection reconstruction interventional MRI.

Shankaranarayanan A, Wendt M, Aschoff AJ, Lewin JS, Duerk JL.

J Magn Reson Imaging. 2001 Jan;13(1):142-51.


Effects of superparamagnetic iron oxide on radio-frequency-induced temperature distribution: in vitro measurements in polyacrylamide phantoms and in vivo results in a rabbit liver model.

Merkle EM, Goldberg SN, Boll DT, Shankaranarayanan A, Boaz T, Jacobs GH, Wendt M, Lewin JS.

Radiology. 1999 Aug;212(2):459-66.


Temperature Measurement Using Echo-Shifted FLASH at Low Field for Interventional MRI.

Chung YC, Duerk JL, Shankaranarayanan A, Hampke M, Merkle EM, Lewin JS.

J Magn Reson Imaging. 1999 Jul;10(1):108.


Temperature measurement using echo-shifted FLASH at low field for interventional MRI.

Chung YC, Duerk JL, Shankaranarayanan A, Hampke M, Merkle EM, Lewin JS.

J Magn Reson Imaging. 1999 Jan;9(1):138-45. Erratum in: J Magn Reson Imaging 1999 Jul;10(1):108.


Developing a multichannel temperature probe for interventional MRI.

Shankaranarayanan A, Duerk JL, Lewin JS.

J Magn Reson Imaging. 1998 Jan-Feb;8(1):197-202.


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