Tumor size measurement

[jsanders1379]

I'm wondering if you can calculate tumor volume from the radiology report...if it says the tumor is 7mmX6mmX5mm,can you simply multiply & say the volume is  210 cubic mm? Just curious because my one year MRI showed shrinkage in one dimension, but growth in the other two dimensions compared to the pre=treatment MRI...just trying to figure out how to compare the two...

[arizonajack]

I'd say that's reasonably close.

There's probably computer software that can do it better.

But 9x6x6 = 324

And 7x6x5 = 210

So, even with a small margin for error, you can conclude a happy bit of shrinkage.

However, keep in mind that the dimensions visible on an MRI depend on the width of the MRI "slice" and the gap between the slices. The dimensions could be off by a mm or so between the two MRIs. That could make the shrinkage illusory.

In March 2014 (14 months after GK) mine was 12x4x6 = 288

In August 2013 (8 months after GK) it was 14x4x5 = 280

By dimensions it shrunk 2mm the long way but volume increased slightly.

Again, that could be explained by the positions of the slices and, in fact, the radiologist called the shrinkage "questionable."

At this point I'm reserving judgment until next March's MRI.