CAJ | 학술논문

目的探讨直肠壁各层声像图识别特征.方法用高频(4~13 MHz)线阵探头扫查10例正常离体直肠标本,获得各层组织声像图,逐层标记、剥离,分别行组织学检查.结果超声显示直肠壁为高低回声相间的7层结构,由内至外分别为:高回声声学界面、低回声黏膜层、高回声黏膜下层、低回声内环肌层、高回声纤维结缔组织层、低回声外纵肌层及高回声外膜层,经组织学证实.结论高频超声显示正常直肠壁为七层回声,可为直肠疾病的诊断尤其是直肠癌浸润深度的判断提供影像学依据.
목적 탐토직장벽각층성상도식별특정.방법 용고빈(4~13 MHz)선진탐두소사10례정상리체직장표본,획득각층조직성상도,축층표기、박리,분별행조직학검사.결과 초성현시직장벽위고저회성상간적7층결구,유내지외분별위:고회성성학계면、저회성점막층、고회성점막하층、저회성내배기층、고회성섬유결체조직층、저회성외종기층급고회성외막층,경조직학증실.결론 고빈초성현시정상직장벽위칠층회성,가위직장질병적진단우기시직장암침윤심도적판단제공영상학의거.
Objective To investigate the ultrasonographic features of normal rectal walls.Methods Ten removed rectal specimens were scanned with high frequency (4-13 MHz) linear array probe to obtain ultrasound images of various layers and having each layer marked,and separated,followed by histological examination respectively.Results Ultrasound demonstrated seven layers of structure which were identified by alternative high and low echoes.From innermost layer towards the outer layers,they were divided as:high-echo acoustic interface,low-echo mucous layer,high-echo sub-mucous layer,low-echo circular muscle layer,high-echo fibrous connective tissue layer,low-echo outer longitudinal muscle layer and high-echo outer membrane layer.All these findings were justified by histological examination.Conclusions High-frequency ultrasound demonstrated 7 layers of echoes in normal rectal walls.This provides imaging basis for diagnosis and judge the invasion degree of rectal cancers.