Hi everyone,<br><br>I am pretty new to medical imaging and trying to learn some vector mathematics behind it. I have a question about the "Image Orientation Patient" tag. It says this tag gives the direction cosines for the rows and colums for the 3 axes.
<br><br>Now my question is, rows and colums direction cosines wrt to which plane??<br><br>Also, each slice has this tag and a slice is just a 2D image. So, how come we get 3 pairs of direction cosine values?<br><br>I am sorry if these questions are very stupid. I would be really grateful if someone can clarify these doubts for me...
<br><br>Thanks a lot,<br><br>Luca<br>