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[Clinical application of mutidetector computer tomography in diagnosing T staging of gastric carcinoma].

OBJECTIVE
To evaluate the significance of plain and dual-phasic enhanced MDCT in the diagnosis of preoperative T staging of gastric carcinoma.


METHODS
MDCT examinations were performed on 57 patients with histopathologically confirmed gastric carcinoma. The scan protocol included plain scanning, arterial phase and portal phase scanning. The MPR image was reconstructed.


RESULTS
The MDCT had 78.94% of accuracy for diagnosing T stage, and 94.74%, 94.74%, 84.21% and 87.72% accuracy for T1, T2, T3, and T4, respectively. The sensitivity of the diagnosis were 25.00%, 80.00%, 78.26% and 88.00% for T1, T2, T3, and T4, respectively. The specificity of the diagnosis were 100%, 96.15%, 88.24% and 87.50% for T1 , T2, T3, and T4, respectively.


CONCLUSION
The plain scan and dual phase enhanced scans of MDCT, especially the thin slice and MPR reconstruction with proper windows technique, have clinical significance for diagnosing T staging of gastric carcinoma.