Projects

June, 2008 to Date:
Working on an innovative imaging technique called Vector Doppler Imaging, which uses Doppler Ultrasound for imaging. We use this novel technique to image Human tissue motion and blood flow. Tissue motion is critical to image in patients with chronic and terminal diseases like Cerebral Palsy, Multiple Sclerosis(MS) and other Spinal cord injuries that cause long terms disablities. This project is receiving much interest as it is a non-invasive, quick and cheaper diagnostic technique. This is will soon be applied on patients with terminal diseases and we are intending to test its capability before it can become a regular medical tool.

Vector Tissue Doppler Imaging is a very new technique in the field of tissue imaging. This method has given very good estimates of the tissue motion and also their direction of motion. The improtant advantages of this method and its approach are:

1. Clinical & Commercial system used. This means that this imaging technique can quickly be induced into medical facilities as a regular imaging tool.

2. Vector Tissue Doppler Imaging is new to tissue imaging and has not been done before. This is an excellent technique that provides very good estimates of the tissue velocity and its direction.

My role in this project was to design this imaging technique, verify its performance with the help of in-vitro experiments and collaborate with the National Institutes of Health (NIH) in understanding the in-vivo capabilities of this method of imaging. We conducted preliminary in-vivo study (Mono-Synaptic Strech Reflex experiment) charecterizing the Vector Doppler system. This was perfromed in collaboration with theNational Institutes of Health (NIH). We obtained good results. We are continuing to work to study the capabilities of this technique in patients with Cerebral Palsy (CP), Multiple Sclerosis (MS) and other terminal spinal and brain injuries.

 

 

 

August, 2007 to May, 2008:
Worked on a Office of Naval Research project to detect landmines at high speed. During my term under this project, I was asked to collect data of inert landmines and perform Signal Processing on them to detect various landmines. This was done by calculating the impedence dis-continuties in the data at various location during imaging using a Ground Penentrating Radar.

 

May,2006 to May, 2007:
Worked at the Signal Processing Lab at National Aerospace Laboratories, Bangalore, India. I designed a Cosine-Modulated Filter Banks with perfect reconstruction project to process real time speech signals. We at the end of this prject were able to sucessfully de-noise the input speech signal and reconstruct it sucessfully without any loss of speech information.