Comparative accuracy of spectral computed tomography and conventional computed tomography in colorectal cancer staging.

In stage-grouped analyses, spectral CT showed higher accuracy than conventional CT in both early-stage disease (81.8% vs 71.4%; χ2 = 1.82, P = 0.177) and advanced-stage disease (69.8% vs 58.0%; χ2 = 3.19, P = 0.074), although these subgroup-specific comparisons did not reach statistical significance.

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