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Magnetic resonance imaging measurement of the anorectal striated muscle complex in normal children.

Abstract：

PURPOSE:The aim of the study was to describe and establish a normal measurement of the striated muscle complex (SMC) in healthy children using body phased-array or head coil magnetic resonance imaging. METHODS:Imaging was performed in 20 boys and 20 girls (age range, from 3 months to 14 years; average age, 3.2 years) without anorectal disorders. The dimensions of the puborectalis muscle (PR) and external anal sphincter (EAS) were measured in different planes. RESULTS:There was a close positive correlation between absolute width and length of SMC and age (P < .05), whereas there was no correlation between the relative width and length of SMC and age (P > .05). Normal relative length of the PR and EAS were measured as 0.47 +/- 0.04 and 0.41 +/- 0.04, respectively, and the normal relative width of PR and posterior EAS were 0.50 +/- 0.04 and 0.44 +/- 0.04 in children younger than 14 years. CONCLUSIONS:The width and length of PR and EAS increase progressively with age. The relative width and length of PR and EAS were not variable with age. A relative width and length of PR and EAS were chosen as objective criteria for normal SMC in children younger than 14 years.

journal_name

J Pediatr Surg

journal_title

Journal of pediatric surgery

authors

Tang S,Tong Q,Mao Y,Wang Y,Li S,Cao Z,Ruan Q

doi

10.1016/j.jpedsurg.2006.05.010

subject

Has Abstract

pub_date

2006-09-01 00:00:00

pages

1549-55

issue

9

eissn

0022-3468

issn

1531-5037

pii

S0022-3468(06)00356-3

journal_volume

41

pub_type

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