<prompt> Which sequence of MRI is used to detect microhemorrhages?T1WIT2WISWIDWI  <response>: SWI Susceptibility-Weighted Imaging is a relatively new full-velocity compensated high-resolution 3-dimensional gradient echo sequence that accurately detects small hemorrhage microhemorrhage and calcification by exaggerating susceptibility signal intensity, which is more sensitive than T2 gradient echo. 