The technology we use, and even rely on, in our everyday lives –computers, radios, video, cell phones – is enabled by signal processing. Learn More »
1. IEEE Signal Processing Magazine
2. Signal Processing Digital Library*
3. Inside Signal Processing Newsletter
4. SPS Resource Center
5. Career advancement & recognition
6. Discounts on conferences and publications
7. Professional networking
8. Communities for students, young professionals, and women
9. Volunteer opportunities
10. Coming soon! PDH/CEU credits
Click here to learn more.
News and Resources for Members of the IEEE Signal Processing Society
Henze Bancroft, Leah C. (The University of Wisconsin - Madison) “High Resolution Magnetic Resonance Imaging of the Bilateral Breasts Using an Accelerated 3D Radial Trajectory”, Advisor: Block, Walter F. (2014)
Breast cancer is the most commonly diagnosed cancer in women in the United States after skin cancer. MRI has been proven to be highly sensitive to breast cancer however it suffers from moderate specificity, resulting in an increased number of false positive. There is the potential to improve the differential diagnosis of breast lesions through better depiction of the morphologic features of interest as well as improving the depiction of contrast kinetics through improved temporal resolution in the DCE scan.
This work utilizes the rapid and efficient 3D-radial VIPR pulse sequence to speed the acquisition of MR breast images, allowing for higher spatial and temporal resolution. A Balanced Steady State Free Precession (bSSFP) signal model is developed to combine bSSFP imaging with chemical shift based decomposition, producing robust fat suppression despite large field inhomogeneities in short acquisition times. This model is designed to handle the complex signal behavior expected when a multiple peak spectral fat model is modulated by the frequency response of a bSSFP acquisition. The ability of this model to accurately decompose fat and water is demonstrated in a phantom as well as in vivo imaging at 1.5 T.
This signal model is used in conjunction with a bSSFP implementation of VIPR to provide images with T2-like contrast and high 0.63 mm isotropic resolution with robust fat suppression across both breasts in a six minute scan time at 1.5 T. The VIPR pulse sequence is modified to provide bilateral coverage and accommodate the collection of four half echoes for use in chemical shift based fat/water decomposition using an iterative graph cuts algorithm. Results are demonstrated in normal breast volunteers.
Finally, VIPR is used to provide high temporal and isotropic spatial resolution during DCE breast imaging. A previously developed version of VIPR was used to obtain promising high spatial and temporal resolution results. Sensitivity to motion and low SNR when using this method provided motivation for the development of bilateral VIPR IDEAL described in this work. While a more thorough analysis of the temporal settings remains to be done, initial results from an ongoing post-contrast study are presented here.
|Call for Nominations: IEEE Medals & Recognitions||15 June 2023|
|Call for Nominations: Fellow Evaluation Committee - Chair and Vice Chair Positions||13 July 2023|
|Nominate a Colleague! Nominations Open for 2023 SPS Awards||1 September 2023|
|Call for Nominations: SPS Chapter of the Year Award||15 October 2023|
© Copyright 2023 IEEE – All rights reserved. Use of this website signifies your agreement to the IEEE Terms and Conditions.
A not-for-profit organization, IEEE is the world's largest technical professional organization dedicated to advancing technology for the benefit of humanity.