To explore the pathogenesis of anterior resection syndrome by magnetic resonance imaging rectal defecography

Figure 1 Rectal compliance was assessed by five-line partition scoring. A: The shape of the wall of the intestine in the area where the bowel was at rest; B: Continuous contraction and relaxation of the intestinal wall in the area where the contrast agent passes through the intestine.

Figure 2 Utilization of magnetic resonance imaging scanning for the acquisition of dynamic and static rectal images. A: Rectum condition in preparation for defecation; B: Rectum deformation at the beginning of defecation; C: Rectum deformation during defecation; D: Rectum deformation after defecation: E: Rectum deformation at the end of defecation; F: Rectum returns to initial state after defecation (contrast agent downward filling in upper segment).

Figure 3 Low Anterior Resection Syndrome Score. LARS: Low Anterior Resection Syndrome Score.

Figure 4 Relationship between postoperative Low Anterior Resection Syndrome Score and magnetic resonance imaging-rectal compliance score. LARS: Low Anterior Resection Syndrome Score; MRI: Magnetic resonance imaging.

Figure 5 Relationship between postoperative Low Anterior Resection Syndrome Score and defecation rate. LARS: Low Anterior Resection Syndrome Score.