Fig. 4.
Example of bi-component T2* analysis of a 64-year-old patient with an ATRS of 45. a R2 map for bi-exponential T2* calculation; b R2 map for mono-exponential T2* calculation; c mono-exponentially calculated T2*; d short component of T2* map; e long component of T2* map; f the binary map of mono- and- bi-exponential pixels used for B/M ratio calculation. Individual maps are overlaid on vTE images, calculated as a subtraction of the shortest TE (0.8 ms) and the longest TE (20 ms). Note the higher diversity of the long T2* component and bi-exponential pixels, as well as the altered ratio of mono- and bi-exponentially calculated pixels compared to volunteer’s data