Dynamic magnetic resonance defecography in 10 asymptomatic volunteers

Table 1 Results of magnetic resonance defecography of 10 healthy asymptomatic volunteers

Anatomic structure	Rest	Straining	Relative movement
Annorectal junction (mm)	-5.3 (± 9.9)	-29.9 (± 10.3)	-24.6
Anorectal angle (°)	93. 0 (± 4.8)	108.7 (± 14. 7)	15.7
Bladder base (mm)	23.0 (± 4.6)	-8.1 (± 11.1)	-14.9
Uterovaginal junction (mm)	43.1 (± 7.8)	7.9 (± 16.5)	-35.2

A positive value represents the lowest position of the pelvic structure above the pubococcygeal line, a negative value marks structures located below the pubococcygeal line. The values represent the median measured distance in millimeters; the numbers in brackets represent the range.