Ricardo Otazo

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Ricardo Otazo, Ph.D.

Assistant Professor;
Department of Radiology (CBI)

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Education

2000-2001 — Institute, Bariloche, Argentina, Internship
2003-2007 — University of New Mexico, Graduate Education

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Research Summary

Imaging speed is of critical importance in many clinical applications of magnetic resonance imaging. Cardiac imaging, for example, must contend with the challenges of cardiac motion, respiratory motion, and blood flow. Parallel imaging (PI) is a well-established technique to accelerate the data acquisition in MRI, by using arrays of radiofrequency receiver coils that provide the additional encoding capabilities needed to reconstruct an image from undersampled datasets. Another approach for accelerated imaging is the application of compressed sensing (CS), which was recently introduced into the MRI field to exploit the compressibility of biomedical images. Instead of acquiring the fully-sampled image and compressing it afterwards (standard compression), CS applies the fact than an image is usually sparse under an appropriate basis and reconstructs this sparse representation from undersampled data. In this project, a combination of compressed sensing and parallel imaging is developed to achieve previously inaccessible combinations of temporal resolution, spatial resolution and spatial coverage.

Research Interests

Accelerated magnetic resonance imaging, compressed sensing, parallel imaging, image reconstruction algorithms, cardiac imaging

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All data from NYU Health Sciences Library Faculty Bibliography — -

Contact:
http://hsl.med.nyu.edu/faculty-bibliography-search

Estimating Liver Perfusion From Free-Breathing Continuously Acquired Dynamic Gadolinium-Ethoxybenzyl-Diethylenetriamine Pentaacetic Acid-Enhanced Acquisition With Compressed Sensing Reconstruction
Chandarana, Hersh; Block, Tobias Kai; Ream, Justin; Mikheev, Artem; Sigal, Samuel H; Otazo, Ricardo; Rusinek, Henry
2014 Oct;:138-145, Investigative radiology
— id: 1316222, year: 2014, vol: , page: 138, stat: Journal Article,

Compressed sensing with synchronized cardio-respiratory sparsity for free-breathing cine MRI: Initial comparative study on patients with arrhythmias
Feng, L; Axel, L; Latson, L A; Xu, J; Sodickson, D K; Otazo, R
2014 16 Jan 2014;16:-, Journal of cardiovascular magnetic resonance
— id: 837022, year: 2014, vol: 16, page: , stat: Journal Article,

Synchronized cardiac and respiratory sparsity for rapid free-breathing cardiac cine MRI
Feng, L; Axel, L; Xu, J; Sodickson, D K; Otazo, R
2014 16 Jan 2014;16:-, Journal of cardiovascular magnetic resonance
— id: 837002, year: 2014, vol: 16, page: , stat: Journal Article,

Low-rank plus sparse matrix decomposition for accelerated dynamic MRI with separation of background and dynamic components
Otazo, Ricardo; Candes, Emmanuel; Sodickson, Daniel K
2014 Apr;:?-?, Magnetic resonance in medicine
— id: 904102, year: 2014, vol: , page: ?, stat: Journal Article,

Dynamic contrast-enhanced MRI of the prostate with high spatiotemporal resolution using compressed sensing, parallel imaging, and continuous golden-angle radial sampling: Preliminary experience
Rosenkrantz, Andrew B; Geppert, Christian; Grimm, Robert; Block, Tobias K; Glielmi, Christian; Feng, Li; Otazo, Ricardo; Ream, Justi M; Romolo, Melanie Moccaldi; Taneja, Samir S; Sodickson, Daniel K; Chandarana, Hersh
2014 May;:526-536, Journal of magnetic resonance imaging
— id: 996522, year: 2014, vol: , page: 526, stat: Journal Article,

Free-breathing contrast-enhanced multiphase MRI of the liver using a combination of compressed sensing, parallel imaging, and golden-angle radial sampling
Chandarana, Hersh; Feng, Li; Block, Tobias K; Rosenkrantz, Andrew B; Lim, Ruth P; Babb, James S; Sodickson, Daniel K; Otazo, Ricardo
2013 Jan;48(1):10-16, Investigative radiology
— id: 202342, year: 2013, vol: 48, page: 10, stat: Journal Article,

Golden-angle radial sparse parallel MRI: Combination of compressed sensing, parallel imaging, and golden-angle radial sampling for fast and flexible dynamic volumetric MRI
Feng, Li; Grimm, Robert; Tobias Block, Kai; Chandarana, Hersh; Kim, Sungheon; Xu, Jian; Axel, Leon; Sodickson, Daniel K; Otazo, Ricardo
2013 Oct;:707-717, Magnetic resonance in medicine
— id: 817022, year: 2013, vol: , page: 707, stat: Journal Article,

MR spectroscopic imaging: Principles and recent advances
Posse, Stefan; Otazo, Ricardo; Dager, Stephen R; Alger, Jeffry
2013 Jun;37(6):1301-1325, Journal of magnetic resonance imaging
— id: 364112, year: 2013, vol: 37, page: 1301, stat: Journal Article,

Highly accelerated real-time cardiac cine MRI using k-t SPARSE-SENSE
Feng, Li; Srichai, Monvadi B; Lim, Ruth P; Harrison, Alexis; King, Wilson; Adluru, Ganesh; Dibella, Edward V R; Sodickson, Daniel K; Otazo, Ricardo; Kim, Daniel
2012 Aug;:1738-1746, Magnetic resonance in medicine
— id: 364122, year: 2012, vol: , page: 1738, stat: Journal Article,

Accelerated phase-contrast cine MRI using k-t SPARSE-SENSE
Kim, Daniel; Dyvorne, Hadrien A; Otazo, Ricardo; Feng, Li; Sodickson, Daniel K; Lee, Vivian S
2012 Apr;67(4):1054-1064, Magnetic resonance in medicine
— id: 162024, year: 2012, vol: 67, page: 1054, stat: Journal Article,

Rapid 3D-imaging of phosphocreatine recovery kinetics in the human lower leg muscles with compressed sensing
Parasoglou, Prodromos; Feng, Li; Xia, Ding; Otazo, Ricardo; Regatte, Ravinder R
2012 Dec;68(6):1738-1746, Magnetic resonance in medicine
— id: 184882, year: 2012, vol: 68, page: 1738, stat: Journal Article,

Towards a five-minute comprehensive cardiac MR examination using highly accelerated parallel imaging with a 32-element coil array: Feasibility and initial comparative evaluation
Xu, Jian; Kim, Daniel; Otazo, Ricardo; Srichai, Monvadi B; Lim, Ruth P; Axel, Leon; McGorty, Kelly Anne; Niendorf, Thoralf; Sodickson, Daniel K
2012 Nov;:180-188, Journal of magnetic resonance imaging
— id: 364102, year: 2012, vol: , page: 180, stat: Journal Article,

Accelerated cardiac T(2) mapping using breath-hold multiecho fast spin-echo pulse sequence with k-t FOCUSS
Feng L; Otazo R; Jung H; Jensen JH; Ye JC; Sodickson DK; Kim D
2011 Jun;65(6):1661-1669, Magnetic resonance in medicine
— id: 127198, year: 2011, vol: 65, page: 1661, stat: Journal Article,

Superresolution parallel magnetic resonance imaging: application to functional and spectroscopic imaging
Otazo, Ricardo; Lin, Fa-Hsuan; Wiggins, Graham; Jordan, Ramiro; Sodickson, Daniel; Posse, Stefan
2009 Aug 1;47(1):220-230, Neuroimage
— id: 106569, year: 2009, vol: 47, page: 220, stat: Journal Article,

Single-shot magnetic resonance spectroscopic imaging with partial parallel imaging
Posse, Stefan; Otazo, Ricardo; Tsai, Shang-Yueh; Yoshimoto, Akio Ernesto; Lin, Fa-Hsuan
2009 Mar;61(3):541-547, Magnetic resonance in medicine
— id: 106570, year: 2009, vol: 61, page: 541, stat: Journal Article,

Accelerated proton echo planar spectroscopic imaging (PEPSI) using GRAPPA with a 32-channel phased-array coil
Tsai, Shang-Yueh; Otazo, Ricardo; Posse, Stefan; Lin, Yi-Ru; Chung, Hsiao-Wen; Wald, Lawrence L; Wiggins, Graham C; Lin, Fa-Hsuan
2008 May;59(5):989-998, Magnetic resonance in medicine
— id: 106571, year: 2008, vol: 59, page: 989, stat: Journal Article,

Sensitivity-encoded (SENSE) proton echo-planar spectroscopic imaging (PEPSI) in the human brain
Lin, Fa-Hsuan; Tsai, Shang-Yueh; Otazo, Ricardo; Caprihan, Arvind; Wald, Lawrence L; Belliveau, John W; Posse, Stefan
2007 Feb;57(2):249-257, Magnetic resonance in medicine
— id: 106575, year: 2007, vol: 57, page: 249, stat: Journal Article,

Accelerated short-TE 3D proton echo-planar spectroscopic imaging using 2D-SENSE with a 32-channel array coil
Otazo, Ricardo; Tsai, Shang-Yueh; Lin, Fa-Hsuan; Posse, Stefan
2007 Dec;58(6):1107-1116, Magnetic resonance in medicine
— id: 106572, year: 2007, vol: 58, page: 1107, stat: Journal Article,

Proton echo-planar spectroscopic imaging of J-coupled resonances in human brain at 3 and 4 Tesla
Posse, Stefan; Otazo, Ricardo; Caprihan, Arvind; Bustillo, Juan; Chen, Hongji; Henry, Pierre-Gilles; Marjanska, Malgorzata; Gasparovic, Charles; Zuo, Chun; Magnott