Non-local behavior

• another way of saying non-ideal spatial resolution
• consider the following nuclear medicine example:

• the above figure shows a nuc med collimator/detector
• a single point on the image receptor may recieve signal from a finite range of angles between the limits shown
• consider two separate objects within the range of angles
• these two objects may be blurred together on the image
• the objects plotted together intrinsically should look like this:

• but because of the effect we've just discussed, it ends up looking like this: