MR Imaging in Diagnosis of Pelvic Floor Descent: Supine versus Sitting Position

Figure 3

MR Defecography. Rest phase in sitting (a) and supine (b) position. Evacuation phase in sitting (c) and supine (d) position. The pathological fixed descent was detected only in sitting position in rest phase (a). In evacuation phase, a cystocele and a vaginal vault prolapse became evident (c), and the MR examination in supine position overestimates the dynamic descent, nonpathological in (a) and (c) and pathological in (b) and (d). BB: bladder base; VV: vaginal vault; ARJ: anorectal junction.

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