Evaluation and Monitoring of Endometrial Cancer Based on Magnetic Resonance Imaging Features of Deep Learning

Table 2

2009 staging standard of EC

Staging	Features
Stage I	The tumor cells were found in the uterus only, and fat-suppressing T2W1 can accurately measure the depth of uterine tumor myometrial invasion
Stage Ia	The tumor cells were found in the endometrium or invaded no more than half of the myometrium only
Stage Ib	The tumor cells invaded more than half of the myometrium
Stage II	The tumor cells invaded the cervix without extracorporeal extension of the uterus
Stage IIa	The myometrium showed discontinues outer edge, and the tumor extended beyond the contour of the uterus
Stage IIb	This period was characterized by destruction of the cervical fibrous stromal ring
Stage III and Stage IV	The parametrial tissue and organ were affected with obvious changes in their signals
Stage III	The tumor cells invaded uterine serosa, adnexa, and vagina. Regional lymph node metastasis was found
Stage IV	The tumor cells invaded the bladder and rectum and metastased to distant organs