Analysis of the clinical value of gemstone spectral computed tomography imaging in the preoperative assessment of colorectal cancer

Figure 1 Receiver operating characteristic curve of gemstone spectral computed tomography imaging for the diagnosis of lymph node metastasis in colorectal cancer. GSI: Gemstone spectral computed tomography imaging; AUC: Area under the curve.

Figure 2 Diagnostic efficacy curves of gemstone spectral computed tomography imaging-associated indicators. A: Diagnostic efficiency curves of the short diameters of the largest sections; B: Diagnostic efficacy curves of energy spectrum parameters in arterial and venous phases. AUC: Area under the curve; IC: Iodine concentration; NIC: Normalized iodine concentration; λ_HU: The slope of the spectral curve.