Clinical Value of PET.CT Based on Big Data in Colorectal and Peritoneal Metastatic Cancer

This study focuses on the evaluation of the clinical utility of PET-CT imaging in peritoneal metastases and colorectal cancer. One hundred patients with colorectal peritoneal metastases, who underwent whole-body PET-CT imaging from January 2015 to December 2019, were selected as the experimental group, and 20 healthy individuals were selected as the control group. The SUVmax of the two groups of patients was 5.73 ± 3.84 and 2.70 ± 2.32, respectively, and the difference was statistically significant. The SUVmax AUC was 0.720, and the AUC of serum AFP, CEA, CA125, and CA199 were 0.596, 0.677, 0.642, and 0.696, respectively. Conclusion. 100 patients with colorectal and peritoneal metastatic cancer underwent PET/CT examination. The follow-up or other imaging examinations confirmed the diagnosis. Analysis of the ROC curve in this study found that with a peritoneal SUVmax> 3.2 as the diagnostic index for colorectal peritoneal metastatic cancer, the sum of sensitivity and specificity reached the maximum.