simtk.org

Hello,

It has appeared to me (although I am not completely sure) that whenever I load MRI Dicom files into SimVascular, they seem much more pixelated compared to the software in the hospital / other software like RadiAnt. In SimVascular it always seems to be of lesser quality. Attached I have put 2 images; 1 containing a zoomed-in image in RadiAnt of 3x the same vessel, and the other is an image of the same vessel and same data in SimVascular, where you can clearly see that suddenly the same data is of much lower quality, which ultimalty is effecting the segmentation quite severly.
Does anyone know how this is possible, is this fixable?

Cheers and thanks in advance,
Jack Tattersall

Hi Jack,

SV displays image data at its original resolution. When you zoom in it will just scale the image, does not do any subsampling or smoothing. The RadiAnt image appears to be smoothed.

When you are segmented image data make sure that the slice window is large enough to contain the image data you want to segment, change this using the Size button in the SV 2D Segmentation tool panel.

What is the resolution of the images you attached in your original post?

Cheers,
Dave

Ah okay that could explain it, the resolution was 0.8 x 0.8 mm I think but obtained Saggital.