Objective To assess the imaging of the normal anatomy of anal canal and complex anal sphincter apparatus in magnetic resonance(MR).
目的 探讨正常肛管及肛门括约肌解剖结构的磁共振（MR）表现。
肛门管
双语例句
1
Objective: to explore the causes of constipation by displaying the functional and anatomic abnormalities of continuity between analcanal and rectum with defecography.
目的通过便秘患者的排粪造影资料显示其肛管直肠形态及功能，寻找便秘原因。
2
Though the two terms are often used interchangeably, the colon technically excludes the cecum (a pouch at the Beginning of the large intestine), rectum, and analcanal.
虽然结肠和大肠常交替使用，但一般结肠不包含盲肠、直肠和肛管等部分。
3
Objective To explore the nursing approach of photodynamic therapy(PDT) of perianal/analcanal condyloma acuminatum with topical adminstration of 5-aminolevulinic acid(ALA).