60 Figure 2.13: Sagittal T2W MRI showing clear posterior and anterior wall asymmetry due to focal adenomyosis (and several leiomyomas) Tissue Signal Intensity A third element of adenomyosis that can be objectively characterized on MRI is the signal intensity (SI) of the affected tissue. Most studies only reported this subjectively (i.e. low high SI (LSI or HSI) foci in the myometrium, without further quantification). Three studies investigated the presence of HSI cysts or foci in the myometrium for their diagnostic accuracy (See Table 2.2, Figure 2.14 and Figures 2.S9 and 2.S10). No other parameters related to tissue signal intensity were investigated for their diagnostic accuracy. Figure 2.14: Diagnostic Performance of Presence of Myometrial Cysts on MRI vs. Histopathology
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