Table 3. Quantitative CT findings of 595 patients with GST and GS.
| CT criteria | GST-L (n=164) | GS-L (n=13) | Puni | Pmulti | GST-S (n=329) | GS-S (n=89) | Puni | Pmulti |
|---|---|---|---|---|---|---|---|---|
| CT attenuation value | ||||||||
| CTU (HU) | 34.68±5.87 | 35.90±2.43 | 0.458 | 35.44±8.10 | 34.20±5.32 | 0.172 | ||
| CTA (HU) | 58.43±18.69 | 57.33±10.69 | 0.835 | 56.87±13.80 | 57.75±13.68 | 0.594 | ||
| CTV (HU) | 70.66±18.75 | 69.68±14.60 | 0.855 | 72.32±17.30 | 74.58±15.78 | 0.028* | 0.401 | |
| DEAP (HU) | 23.75±17.79 | 21.43±9.23 | 0.643 | 21.44±13.20 | 23.56±12.71 | 0.176 | ||
| DEPP (HU) | 35.98±19.14 | 33.78±13.39 | 0.686 | 34.67±17.57 | 40.38±14.70 | 0.002** | 0.167 | |
| Size | ||||||||
| LD (mm) | 83.06±38.16 | 62.38±16.33 | 0.055 | 28.14±11.77 | 27.21±10.07 | 0.496 | ||
| SD (mm) | 60.88±24.28 | 52.69±13.49 | 0.232 | 23.50±10.57 | 22.48±8.40 | 0.401 | ||
| LD/SD | 1.37±0.25 | 1.20±0.17 | 0.005** | 0.070 | 1.23±0.28 | 1.22±0.20 | 0.820 | |
Data are expressed as mean ± standard deviation. *, P<0.05; **, P<0.01. Puni/Pmulti, value from the univariate or multivariate analysis. CT, computed tomography; CTU/CTA/CTV, the CT attenuation value of unenhanced/arterial/venous phase; DEAP/DEPP, the CT attenuation value of arterial phase-unenhanced phase/venous phase-unenhanced phase; GS, gastric schwannoma; GST, gastric stromal tumor; GST-L/GS-L/GST-S/GS-S, large or small GST/GS; LD, long diameter; SD, short diameter.