Ricardo Otazo

Biosketch / Results /

Jose Otazo-Torres

Associate Professor, Department of Radiology

Contact Info

Address
660 First Avenue
New York, NY 10016

212/263-4842
Ricardo.Otazo@nyumc.org

Education

2000-2001 — Institute, Bariloche, Argentina, Internship

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

Research Keywords

imaging

Accelerated MRI for the assessment of cardiac function
Axel, Leon; Otazo, Ricardo. Accelerated MRI for the assessment of cardiac function. British journal of radiology. 2016 Apr 21;89(1063):20150655-20150655 (2059282)

Three-dimensional MR Cholangiopancreatography in a Breath Hold with Sparsity-based Reconstruction of Highly Undersampled Data
Chandarana, Hersh; Doshi, Ankur M; Shanbhogue, Alampady; Babb, James S; Bruno, Mary T; Zhao, Tiejun; Raithel, Esther; Zenge, Michael O; Li, Guobin; Otazo, Ricardo. Three-dimensional MR Cholangiopancreatography in a Breath Hold with Sparsity-based Reconstruction of Highly Undersampled Data. Radiology. 2016 Mar 16;280(2):585-594 (2031992)

Comparison of conventional DCE-MRI and a novel golden-angle radial multicoil compressed sensing method for the evaluation of breast lesion conspicuity
Heacock, Laura; Gao, Yiming; Heller, Samantha L; Melsaether, Amy N; Babb, James S; Block, Tobias K; Otazo, Ricardo; Kim, Sungheon G; Moy, Linda. Comparison of conventional DCE-MRI and a novel golden-angle radial multicoil compressed sensing method for the evaluation of breast lesion conspicuity. Journal of magnetic resonance imaging. 2016 Nov 17;:?-? (2311022)

Sparse-SEMAC: rapid and improved SEMAC metal implant imaging using SPARSE-SENSE acceleration
Otazo, Ricardo; Nittka, Mathias; Bruno, Mary; Raithel, Esther; Geppert, Christian; Gyftopoulos, Soterios; Recht, Michael; Rybak, Leon. Sparse-SEMAC: rapid and improved SEMAC metal implant imaging using SPARSE-SENSE acceleration. Magnetic resonance in medicine. 2016 Jul 25;:?-? (2191422)

Four-dimensional respiratory motion-resolved whole heart coronary MR angiography
Piccini, Davide; Feng, Li; Bonanno, Gabriele; Coppo, Simone; Yerly, Jerome; Lim, Ruth P; Schwitter, Juerg; Sodickson, Daniel K; Otazo, Ricardo; Stuber, Matthias. Four-dimensional respiratory motion-resolved whole heart coronary MR angiography. Magnetic resonance in medicine. 2016 Mar 28;:?-? (2066172)