DSP seminar, Wed Oct. 26 Time and location: 4:00-5:00 PM 2269 Beckman Institute

Title: Adaptive Sampling in Magnetic Resonance Imaging


Speaker: Nitin Aggarwal


Graduate Student
ECE Department, UIUC

Abstract:

Since its introduction, MRI has seen extensive technological developments and 
wide application in medical diagnosis. This great interest  is primarily due 
to the non-invasive and non-ionizing nature of MR imaging along with the high 
spatial resolution and flexible contrast mechanism it provides. Relative to 
other medical imaging modalities MRI acquires information about the imaged 
object at a low temporal rate. However this limitation is offset by the great 
control and flexibility provided available in designing the data acquisition 
process. Thus MRI provides both the need and opportunity for adapting the data 
acquisition to the specific object being imaged.

In this talk I will discuss the problem of dynamic cardiac MR imaging and 
demonstrate how adaptive sampling and reconstruction can be  used to reconstruct 
high spatial and temporal resolution  movies from MR data acquired  at sub-Nyquist rate.