Is there a way that I can show PET/fMRI activation peaks on an image?
Yes, MRIcro can superimpose hotspots onto an MRI scan. To do this, you create a simple text file that describes the coordinates of the hotspots (as described below). Next, open your brain image with MRIcro and right-click on the multislice button. The text below shows a sample text file, and the images on the right shows the corresponding hotspots that are generated. The format of the text file is very simple. First of all, each line of text defines a hotspot, so in our example there are five hotspots. The first three numbers of each line describes the MNI-space coordinates of each hotspot (e.g. the first hotspot is at 67x14x16mm: right, frontal, slightly dorsal of the anterior commissure). The final three numbers describe the shape, radius and color respectively of the hotspot. The shape should be a value 1..8 depending on whether the hotspot should be a square (2), circle (4), diamond (6) or ‘+’ (8) [for filled items, subtract 1 from these values – e.g. value 3 is a filled circle whi
