Monday, October 30, 2006

Awaiting to get more MRI

I get most of the MRI data from patient-studies at the National Heart and Lung Institute in London. I work primarily on MRIs obtained after an Angiogram. An Angiogram is a technique in which the blood is injected with a radio-contrasting agent such as Gadolinium. This causes the contaminated blood to appear as bright white in the MRI. Blood vessels and heart structures such as the Left atrium 'light-up' due to this contamination.

I had received quite a number of MRI studies from a cardiologist in early March this year. Most of these do not have an Angiogram. The ones that do, only captured the contaminated blood before it had flowed into the left atrium, leaving the LA invisible.

I will be awaiting to acquire more MRI studies, in order to segment a few more of left atriums. Segmenting more atriums will help us validate and confirm the correctness of our segmentation and provide us with enough training data to (possibly) build a statistical model.

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