Nitro Strength analysis that you CV map is actually a combination of both t1 map B contrast in force contrast what that means is this is the most difficult analysis to perform because he would need this data as well as this data to 130 but that's basically how Tevan mapping works is by comparing when my colleague to another you could potentially diagnosed at abnormality so again through this analyze it Tevan map without contrast to in map the contrast and exercise volume fraction which is a combination of these two plus a hematocrit to come up with the severity of edema so if you play look at these and compare them to in mapping without contrast is actually the most superior technique this is quite interesting because as I mentioned