《Table 2 Statistics》

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《Instant evaluation of contrast enhanced endoscopic ultrasound helps to differentiate various solid pancreatic lesions in daily routine》

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PPV:Positive predictive value；NPV:Negative predictive value；db:Decibel.

Of those 55 patients，CEH-EUS showed hypoenhanced lesions in 39 cases，while in13 patients contrast agent characteristics were classified as hyperenhanced by the investigator upon investigation and 3 lesions as non-enhanced.Calculation of signal intensity later on showed signal intensity of 6.1±3.2 db for lesions classified as hypoenhanced and 39.0±13.0 db for lesions classified as hyperenhanced.Nonenhanced lesions showed signal intensity of 1.3±0.3 db（Table 1）.