How to implement a (semi)automated algorithm for thorax and lung segmentation?

Hy everyone, I'm a newbie in Image processing Toolbox. I'm stuck with a problem regarding image segmentation. I have a file with CT images of a thorax. I'd like to implement a code able to perform the segmentation of the external contour of the thorax for each slice. I've theoretical notions but no idea where to start with Matlab. My idea would be using a region growing algorithm Could someone give me a hint? It would be very precious. Thanks

Answer 1

[Image Analyst]

I doubt you need region growing. Maybe simple thresholding would work. First off, see my Image Segmentation Tutorial: http://www.mathworks.com/matlabcentral/fileexchange/?term=authorid%3A31862&sort=downloads_desc

Next see some medical segmentation demos that I've attached.

By the way, you said you attached a .mat file, but you actually did not.

[Spider]

Thank you so much! Oh yes, I edit before attaching the link which is bigger than 5MB

Answer 2

[Julian Hapke]

Have a look at this and the mentioned link to get an idea where to start.

[Spider]

Hi Julian! Thank you so much for your attention! But I've trouble with the link. It redirects to my question...