Computed tomography 3D reconstruction and texture analysis for evaluating the efficacy of neoadjuvant chemotherapy in advanced gastric cancer

Table 1 Classification of postoperative pathological shrinkage of tumors

TRG grading	Content
TRG1a	(Complete remission): No residual tumor
TRG1b	(Subtle remission): Tumor residual < 10%
TRG2	(Partial relief): 10%< tumor residue < 50%
TRG3	(Minor or no relief): Tumor residual > 50%

TRG: Tumor regression grade.