On annotatable images, I would like a "total amount injected box" that adds together the number of units or volume of substance that has been charted on the image. This function is available on other EMR platforms, so it must be something that could be developed. The value of having that box automatically populate the amount that has been charted, is that it prevents injection volumes form being omitted or forgotten on the treatment image, which keeps inventory and record keeping medically accurate.