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Nov 17, 2009 - Three researchers travel to Madrid to Present at ICERI 2009
Maria Helguera, PhD, Bob Callens, and Joe Pow will be presenting "A Research Approach to Recruit College Applicants in Specialized Science to Benefit Global Technology and Innovation" at the International Conference on Education, Research, and Innovation.
Sept 25, 2009 - Maria Helguera, PhD, presents "Developments of a Novel 3-D Optical Molecular System Incorporating Structured Illumination Technology" at the IEEE and IS&T Western New York Image Processing Workshop
This work which was sponsored by Carestream Health was accomplished by an RIT senior design team. A currently available 2-D high-resolution, optical molecular imaging system was modified by the addition of a structured illumination source, Optigrid(TM), to investigate the feasibility of providing depth resolution along the optical axis. The modification of the system involved the insertion of the Optigrid(TM) and a lens in the path between the light source and the image plane, as well as control and signal processing software. The primary challenge of the design, which was to project the Optigrid(TM) onto the imaging surface at an angle, was resolved applying the Scheimpflug principle. The illumination system implements modulation of the light source and provides a framework for capturing depth resolved mages. The system is capable of in-focus projection of the Optigrid(TM) at different spatial frequencies, and supports the use of different lenses. A calibration process was developed for the system to achieve consistent phase shifts of the Optigrid(TM). Post-processing extracted depth information using depth modulation analysis using a phantom
Sept 13, 2009 - Karl Baum, PhD, presents "Simulation of High-Resolution Magnetic Resonance Images on the IBM BlueGene/L Supercomputer using SIMRI" at International Conference on Imaging Technologies in Biomedical Sciences 2009
SIMRI is a Bloch equation-based magnetic resonance image (MRI) simulator, developed at CREATIS, Lyons, France, designed for small clusters supporting MPI. Modifications were implemented to support the specialized operating system and hardware requirements available on the Blue Gene/L Systems. In particular, this involved optimizing memory usage for both the MPI communication and SIMRI to be sufficiently below the 1024MB limitation of a computational node (virtual memory is not supported by the OS). Additional modifications were necessary to allow increased parallelization within SIMRI in order support and efficiently utilize the large number of compute nodes available on the Blue Gene. The code was evaluated using two Blue Gene/L systems available in New York. New York Blue is hosted at Brookhaven National Laboratory and consists of 18,432 dual 700Mhz PowerPC 440 nodes with 1024MB of memory. Rensselaerís Computational Center for Nanotechnology hosts another system consisting of 16,384 dual 700Mhz PowerPC 440 nodes divided equally between 512MB and 1024MB configurations.
Sept 13, 2009 - Karl Baum, PhD, presents "Calibration and Evaluation of a Dual Layer High Dynamic Range Display for Pathology Detection Tasks" at International Conference on Imaging Technologies in Biomedical Sciences 2009
A two-alternative forced choice experiment was conducted to determine if diagnostic benefits exist when using high dynamic range displays for lesion detection tasks. The potential benefits resulting from both an increased dynamic range and an increased number of displayable just noticeable grayscale differences were evaluated. A custom high dynamic range display system was constructed using an LCD panel and DLP projector. The display, which provides a much larger contrast ratio than available with typical medical LCDs, was calibrated using the DICOM standard and its performance compared with that of an LCD.
Sept 1, 2009 - Maria Helguera, PhD, is the recipient of NIH funding that will allow her to spend 4 months working with collaborators at the University of Rochester investigating ultrasound technologies for tissue engineering
A new collaboration, funded by the NIH, brings together the expertise of Professor Maria Helguera (Center for Imaging Sciences, RIT), Professor Diane Dalecki (BME, UR), and Professor Denise Hocking (Pharmacology & Physiology, UR). The collaborative effort focuses on developing novel, ultrasound tissue characterization techniques for engineered tissues. This work is part of a larger project, led by Drs. Dalecki and Hocking and funded by the NIH, that aims to develop ultrasound-based technologies for the field of tissue engineering.
Aug 21, 2009 - High school summer intern Shawn Welch presents his work on the registration of Daguerreotype Images
Shawn Welch will present the procedure he developed for the registration of visible, ultraviolet, and specular images of Daguerrotypes at the internal final presentations workshop. This work was conducted in collaboration with Patrick Ravines at the George Eastman House.
Aug 10, 2009 - Lab member Gary Ashton completes his master's project
Online student Gary Ashton has successfully completed his master's project titled "Segmenting Knee Cartilage Using Thresholds Determined From Histogram Information."
June 1, 2009 - Lab member Stephanie Shubert completes her MS
Stephanie Shubert is the recipient of a master's degree in imaging science after completing her research project "Effect of Anisotropy on the High-Frequency Ultrasound Backscatter of Simulated Nerve Fiber".
June 1, 2009 - Lab member Di Lai to recieve PhD
Di Lai has successfully defended his dissertation titled "Independent Component Analysis (ICA) Applied to Ultrasound Image Processing and Tissue Characterization."
May 1, 2009 - BMMIL featured in Research at RIT magazine
Research conducted in the lab was featured in a special Bio-X issue of Research at RIT. The magazine mails out to alumni and friends of RIT.
Feb 11, 2009 - Roxanne Canosa, PhD, presents "Modeling Decision-Making in Single- and Multi-Modal Medical Images" at SPIE Medical Imaging 2009
This research introduces a mode-specific model of visual saliency that can be used to highlight likely lesion locations and potential errors (false positives and false negatives) in single-mode PET and MRI images and multi-modal fused PET/MRI images. A saliency model consisting of a set of differentially weighted low-level feature maps is derived from the known error and ground truth locations extracted from a subset of the test images for each modality. The saliency model shows that lesion and error locations attract visual attention according to low-level image features such as color, luminance, and texture.
Feb 4, 2009 - Maria Helguera, PhD presents "A Look Inside: Latest Developments in Medical Imaging
The latest efforts toward development of a virtual medical imaging facility will be presented. Digital simulators for PET and MRI have been used to test imaging protocols on synthetic medical images. Results will be presented for brain and breast tissue digital phantoms. Fusion techniques will also be discussed. The research addresses the problem of simultaneous visualization of multidimensional and multispectral image data crucial for improved remote diagnosis and therapy planning.
Oct 25, 2008 - Maria Helguera, PhD, and Karl Baum, PhD, present "Evaluation of Genetic Algorithm-Generated Multivariate Color Tables for the Visualization of Multimodal Medical Fused Data Sets" at IEEE Nuclear Science Symposium
Application of a multimodality imaging approach is advantageous for detection, diagnosis, and management of many ailments. Display is limited to two or three dimensions when using spatial relationships alone. The use of color, in addition to spatial relationships increases the dimensionality of the data that can be effectively visualized. A genetic algorithm has been developed to automatically generate color tables satisfying defined requirements for the fused display of high-resolution and dynamic contrast-enhanced magnetic resonance imaging and F18-FDG positron emission tomography data sets. Radiologists were asked to evaluate images created using several different fusion-for-visualization techniques. The study determined radiologists' preference, ease of use, understanding, efficiency, and accuracy when reading images using each technique. The genetic algorithm generated color tables were rated as the preferred ones.
Dec 2, 2008 - Karl Baum, PhD, presents "Simulation of High-Resolution Magnetic Resonance Images on the IBM Blue Gene/L Supercomputer" at NYSGrid Meeting
Creating software models of the human anatomy and imaging systems, and modeling the medical physics of the imaging acquisition process can provide a means to generate realistic synthetic data sets. In many cases synthetic data sets can be used, reducing the time and cost of collecting real images, and making data sets available to institutions without clinical imaging systems. While medical image simulation software has been under development since the 1980s, until recently the complexity of the procedures and long computation times have limited the realism and accuracy of artificially generated images. The use of distributed systems such as the Blue Gene/L systems available at Brookhaven National Labs and the Rensselaer Polytechnic Institute provide unparalleled computational capabilities allowing full resolution data sets to be generated in reasonable amounts of time. SIMRI is a Bloch equation based magnetic resonance image (MRI) simulator, developed at CREATIS, Lyons, France, designed for small clusters supporting MPI. Modifications were implemented to support the memory constraints and increased number of nodes available on the Blue Gene/L Systems. This resulted in, to the authorís knowledge, the first system capable of generating high resolution (2563 voxels) realistic MRI images directly from modeling the Bloch equations.
July 23, 2008 - Harold Mendoza and Shaynae Moore present at COS undergraduate research seminar
Two students spending their summer in the lab will present their research findings from 1:00-2:00pm in 08-1250.
April 7, 2008 - Dr. Karl Baum Discusses PET/MRI Breast Image Registration
Dr. Karl Baum discusses using commercially available finite element method software to facilitate PET/MRI breast image registration.
March 27, 2008 - Dr. Maria Helguera to speak at Rochester Center for Biomedical Ultrasound Meeting
Dr. Helguera provides an update on biomedical research at RIT. Thursday, March 27, 2008 from 1:30pm-2:30pm at URMC: Aud 3-6408 map
Jan 23, 2008 - New Tool Facilitates Fusion and Visualization of Multimodal Studies
Discussion with Dr. Karl Baum on multimodal visualization.
Nov 7, 2007 - Overview of Medical Imaging Technology
Imaging science web event for prospective students. Modern imaging technologies and issues are reviewed. Register for event to receive access to the archived video.
Sept 27, 2007 - Specialized Environment for Simulation of Medical Images
Karl Baum speaks about using advanced technologies to support the next generation of medical image simulators. Part of Research Computing Seminar Series. Broadcast over the Access Grid. pdf
May 1, 2007 - Online Masters Graduate Combines Patent Law and Physics
Robert Rose, graduating spring of 07 with a masters degree in Imaging Science obtained through the on-line program, was recently featured in an article by the American Physical Society. His research project was on a method for segmenting nerves in ultrasound images during guided anesthesia.
Sept 29, 2006 - Medical Imaging What Lies Ahead
Dr. Maria Helguera discusses the future of medical imaging in September's issue of Advanced Imaging Magazine.
March 1, 2006 - Stephanie Shubert wins Prestigious NSF Fellowship
Stephanie Shubert, a masters student in CIS working in the area of biomedical imaging, was awarded a prestigious NSF Graduate Research Fellowship, to pursue her research investigation of skin using ultrasound.