Medical Mechanical Engineering

Room ***, Walter Library 612-***-****

***, ******** ****** **, ********@***.***

Minneapolis, MN 55455 Web: http://www.chityala.org/

Blog: http://imageviz.blogspot.com/

Education University at Buffalo, The State University of New York (SUNY)

Doctorate in Philosophy (Ph.D.) in Mechanical Engineering, September 2007

GPA - 3.5/4.0Bharathidasan University, Trichy, India

Bachelors of Engineering (B.E.) in Mechanical Engineering, 1998

Score - 81.5%

Summary of qualificationExperience in consulting faculty, staff and students on image processing and visualizationFour years of relevant research experience in medical image processing, graphics, visualization, optimization and 3D cone beam computed tomography (CT) Excellent written and verbal communication skill with 26 publication / oral presentation / poster including nine as first author at international conferencesExtensive experience in x-ray image processing, cone beam CT (CBCT) and visualization

Relevant Experience

Minnesota Supercomputing Institute (MSI), University of Minnesota at Minneapolis

Manager Scientific Development and Visualization Laboratory (SDVL) and Scientific Visualization Consultant, October 2006 – present

Manager SDVL: Short and long term planning for the SDVL. Also provided software recommendations, installation and evaluationSoftware purchase: Working on purchase and renewal of more than 300 software’s for MSIVendor relations: Worked with vendors to resolve software bugs. Worked with vendors to arrange symposium, tutorials etc for the benefit of usersPurchase of core systems: Involved in the process of making decisions for purchasing core resources. GPGPU computing: Member of the GPGPU computing groupUser support: Providing technical user support for code development, debugging and tuning for medical and biological image processing and visualization using programming languages, software packages etcTutorials: Designed, prepared and presented tutorials and hands-on workshops on various topics like biological, medical and general image processing. Grants: Working with industry and faculties on various grants

Toshiba Stroke Research Center (TSRC), University at Buffalo, SUNY

Research Assistant, February 2002 – October 2006

Image processing: Pre-processing projection images, to remove reconstruction artifacts Region of Interest (ROI) cone beam CT: Reconstructing x-ray projection images acquired with an ROI filter in the beam reduces dose to the patient, while producing reconstruction comparable to full field of view (FOV). Combining full FOV projection images acquired at low dose along with truncated projection acquired at higher dose and higher resolution, produces a good quality reconstructionOptimization in biplane imaging: Determining the relative geometry between two DSA images of blood vessels by optimizing an objective function that maximizes the formation of the 3D vessel Sinogram completion: Reducing truncation artifact in CT reconstruction by determining objects lying outside the FOV using apriori knowledge that every feature in the sinogram traces a sine curveSegmentation and visualization: Segmenting and visualizing 3D CT data sets

Office of Radiation Safety, Erie County Medical Center, Buffalo, NY

Assistant Radiation Safety Officer, June 2003 – October 2006Quality assurance on x-ray and nuclear equipments, responsible for radiation safety badge inventoryHands on experience in testing and dose measurement on CT machine

Computer Skills

Language : C, C++, Python, django, SQL, MATLAB, Shell Scripting, MPI, OpenMP, OpenGL, Visualization Toolkit (VTK), Insight Toolkit (ITK), ImageMagick

Operating System : Windows, Linux / UNIX variants, Mac OS

Software Packages : Pro-Engineer, Solid Works, Mimics, Huygens, Avizo, Amira, Tecplot, Imaris, MevisLab

Grants

$46,000

Digital Technology Center, Univ of Minnesota

Vision Guided Helical Therapy

PI: Susanta Hui, Dept of Radiation Therapy

Role: Imaging consultant

ChaptersRavishankar Chityala. (2010). X-Ray and Computed Tomography. In: Dr. Robert Splinter Handbook of Physics in Medicine and Biology. Boca Raton: Taylor and Francis. 26-1 to 26-13.

Journal papers and proceedings

R. Chityala, S. Pudipeddi, L. Artensen, S. Hui, "Automatization of Segmentation and Visualization of a large, high-resolution micro-CT data of mice", Journal of Digital Imaging - accepted for publicationR. Jones, C. Aparicio, R. Chityala, R. Chen, A. Fok, J. Rudney,"Assessing ex vivo dental biofilms and in vivo composite restorations using cross-polarization optical coherence tomography," Proceedings of SPIE, Lasers in Dentistry XVIII 2012, in pressR. Chityala and S. Pudipeddi, A System to Transcribe Documents in European Languages with Human Help, Proceedings of the 2011 International Conference on Image Processing, Computer Vision, & Pattern Recognition, vol. I, 930-933 (2011) V. Patel, R. N. Chityala, K. R. Hoffmann, C. N. Ionita, D. R. Bednarek, and S. Rudin, Self-calibration of a cone-beam micro-CT system, Med. Phys. 36, 48 (2009)Ciprian N. Ionita, Keneth R. Hoffmann, Daniel R. Bednarek, Ravishankar Chityala and Stephen Rudin, Cone-Beam Micro-CT System Based on LabVIEW Software, Journal of Digital Imaging, 2008, vol 21, no. 3, 296-305 (2008)V. Patel, A. Kuhls, P. Noel, A. Walczak, C. N. Ionita, R. Chityala, K. R. Hoffmann, R. V. Tranquebar, S. Rudin, Experimental comparison of cone beam CT (CBCT) reconstruction and multiview reconstruction (MVR) for micro angiography (MA) detector system, Medical Imaging: Physics of Medical Imaging, 6142-85 (2006)R. N. Chityala, K. R. Hoffmann, S. Rudin, and D. R. Bednarek, Artifact reduction in truncated CT using sinogram completion, Medical Imaging: Physics of Medical Imaging, 5747, 2110–2117 (2005).R. N. Chityala, K. R. Hoffmann, S. Rudin, D. R. Bednarek, Region of interest (ROI) computed tomography (CT): comparison with full field of view (FFOV) and truncated CT for a human head phantom, Medical Imaging: Physics of Medical Imaging, vol 5745, pp. 583-590 (2005)R. N. Chityala, K.R. Hoffmann, D.R. Bednarek, S. Rudin, Region of interest (ROI) computed tomography, Medical Imaging: Physics of Medical Imaging, vol 5368, 534-541 (2004)S. Rudin; Andrew T. Kuhls; Girijesh K. Yadava; Gaurav C. Josan; Ye Wu; Ravishankar N. Chityala; Hussain S. Rangwala; N. Ciprian Ionita; Kenneth R. Hoffmann; Daniel R. Bednarek, New light-amplifier-based detector designs for high spatial resolution and high sensitivity CBCT mammography and fluoroscopy, Medical Imaging: Physics of Medical Imaging, vol 6142, 534-541 (2004)

Posters and presentations

R. Chityala, S. Pudipeddi, "Perceptual Grouping of Characters in Antarctica Maps" will be presented on July 13th 2012 at the SIAM Annual Meeting, Minneapolis, MN A. Weaver, J. Rudney, R. Chen, R. Chityala, A. Fok, C. Aparicio, R. Jones, "Volumetric Assessment of Oral Microcosm Biofilms Grown on Resin Composites", American Association for Dental Research (AADR) Annual Meeting, March 23rd 2012 S. Pudipeddi, R. Chityala, Method to extract names of geographical features from images of maps - A theoretical case study., Joint Mathematics Meetings of the American Mathematical Society, Jan 2012R. Chityala, S. Pudipeddi, "Completely Automated Public Turing test to tell Computers and Humans Apart (CAPTCHA) for transcribing Unicode text from images", Workshop Computing in Image Processing, Computer Graphics, Virtual Surgery, and Sports, Institute of Mathematics and its Applications, University of Minnesota, March 7th 2011R. Chityala, Academic Consulting for Image Processing with Examples, The 20th Annual PCMI Summer Session on Image Processing, Park City, UT, July 2010 R. N. Chityala, V. Patel, K. R. Hoffmann, S. Rudin, D. R. Bednarek, Region of Interest (ROI) Cone-beam CT Using Dual Resolution, Dual Detector Image Acquisition: Evaluation of Off Centered ROIs, poster presentation at RSNA 2006, Chicago, Nov 28th 2006.Rangwala HS, Chityala RN, Rudin S, Hoffmann KR, A portable tomographic platform for image acquisition and calibration for cone beam computed tomography (CBCT) and region of interest CBCT (ROI-CBCT) on a commercial X-ray C-arm system, Med Phys 33:1997–1998, 2006V Patel, A Kuhls, P No l, A Walczak, C Ionita, R Chityala, R Tranquebar, H Rangwala, S Kasodekar, G Yadava, K Hoffmann, D Bednarek, S Rudin, Effect of Projection Angles Used in Multi-View Reconstruction (MVR) Using Images From a Micro angiographic (MA) Detector and An Image-Intensifier (II) System, Med Phys 33: 2229-, 2006R. N. Chityala, K. R. Hoffmann, S. Rudin, D. R. Bednarek, Region-of-interest (ROI) Computed Tomography: Combining dual resolution XRII images, Med Phys., vol 32(6), pp. 1888, June 2005R. N. Chityala, K. R. Hoffmann, S. Rudin, D. R. Bednarek, High-Resolution Region-of-interest (ROI) Cone-Beam CT, Proceedings of RSNA 2005, pp. 392R. N. Chityala, K.R. Hoffmann, S. Rudin, D.R. Bednarek, ROI CT: a process to obtain high quality reconstructions with less dose, Proceedings of RSNA 2005, pp. 820S Rudin, C Ionita, G Yadava, Y Wu, K Hoffmann, R Chityala, D Bednarek, New Development, Med Phys 32, 2123-, 2005S Rudin, C Ionita, G Yadava, Y Wu, D Bednarek, K Hoffmann, C Keleshis, G Josan, and R Chityala, New Detector for Low Dose Cone Beam Computed Tomographic (CT) Mammography Based On Microchannel Plate Image Amplifiers, Med Phys 32, 2065-, 2005Gopal A, Hoffmann K, Ionita C, Chityala R, Rudin S, et al.. Three-dimensional reconstruction of an asymmetric vessel phantom using two x-ray projections, Medical Physics 32: 2157, 2005Ionita C, Rudin S, Yamamoto J, Bednarek D, Hoffmann KR, Chityala R, Evaluation of Placement Accuracy of Endovascular Asymmetric Stents (EAS) during X-ray Image-guided Treatment of in Vivo Aneurysms, RSNA 2005, LPR11-01.R. Chityala, K. Hoffmann, C. Ionita, D. Bednarek, S. Rudin, Geometric Calibration of Micro-Cone-Beam CT System, Med Phys., vol 31(6), pp. 1820, June 2004Ionita C, Chityala R, Kyprianou I, Dinu P, Rudin S, et al, LabView algorithm for control of cone beam micro-CT machine, Medical Physics 31: 1849, 2004Hoffmann K, Rudin S, Bednarek D, Chityala R, Gopal A, et al, High-resolution 3D angiographic data from multiple X-ray projections . Med Phys., vol 31(6), pp. 1827, June 2004Rudin S, Bednarek D, Chityala R, Dinu P, Hoffmann K, et al. High-resolution vascular radiological imaging AAPM 2004 Medical Physics 31: 1826-7R. N. Chityala, K.R. Hoffmann, D.R. Bednarek, S. Rudin, Volume of interest cone-beam micro-CT reconstruction, Proceedings of RSNA 2003, pp. 692R. Chityala, K. Hoffmann, C. Ionita, S. Rudin, D. Bednarek, Y. Wu, Micro-Cone-Beam CT for Determination of Stent Coverage of Aneurysm Orifice, Med Phys., vol 30(6), pp. 1423, June 2003C. Ionita, R. Chityala, S. Rudin, K. Hoffmann, I. Kyprianou, D. Bednarek, Cone-Beam CT of Vessel Phantoms: Comparison of Image Intensifier and High-Resolution Micro-Angiographic Systems, Med Phys., vol 30(6), pp. 1423, June 2003D. Nazareth, K. Hoffmann, R. Chityala, J. Dmochowski, Comparison of Techniques for Reconstructing 3D Vessel Trees from Biplane Images, Med Phys., vol 30(6), pp. 1424, June 2003

Other experience

Engineering Research and Development Center, Caterpillar India Pvt Ltd, India

Design Engineer, August 1998 – July 2001Designed hydraulic, pneumatic and brake cooling system for a dumper and dozerCoordinated electrical commodity team, a team formed to improve the quality and reliability of all electrical components

Academic AwardsWon 2nd prize in Mechanical and Aerospace Engineering Graduate Student Association (University at Buffalo) Poster Competition held on April 15th, 2003Awarded gold medal for 1st rank in under-graduationAwarded The Best Outgoing Student of the Mechanical Engineering Department (1998), by the faculty of the Mechanical Engineering Department

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