Objective To investigate the diagnostic value of transabdominal gastric-filling ultrasonography for gastricmotility disorders in functional dyspepsia patients.MethodsTransabdominal gastric-filling ultrasonography was performed on 150 patients with functional dyspepsia patients（FD group）and 50 cases of healthy volunteers（control group）

the volume ofgastric body and antrum was measured by three-dimensional technique with virtual organ computer-aided analysis（VOCAL）

and the gastric antrum peristaltic wave amplitude

velocity

frequency were measured by two-dimensional ultrasound

and thepercentage occlusion of gastric contractions and gastric motility index were calculated

and the measured parameters of twogroups were compared.The receiver operating characteristic（ROC）curve was plotted to obtain the diagnostic cutoff values ofgastric antrum peristatic wave amplitude

the percentage occlusion of gastric contraction and gastric motility index

and thediagnostic efficacy were calculated.ResultsThere were no significant differences in age

gastric body volume

gastric antrumvolume

gastric wall peristaltic frequency and gastric antrum peristaltic wave velocity between FD group and the control group.There were statistically significant differences between the two groups in peristaltic antrum peristaltic wave amplitude

thepercentage occlusion of gastric contractions and gastric motility index（all P

<

0.05）.The cutoff values of gastric antrum peristalticwave amplitude

percentage occlusion of gastric contractions and gastric motility index obtained from the ROC curve were8.5 mm

55.5% and 24.9 mm

2

/s respectively

and the area under the curve were 0.780

0.776

and 0.778

respectively. Thediagnostic sensitivity were 78.67%

69.33%

77.33%

and the specificity were 78.00%

78.00%

80.00%

and the diagnosticcoincidence rate were 78.50%

71.50%

78.00% respectively.The sensitivity

specificity

diagnostic coincidence rates of threeindicators combined diagnosis were 81.33%

78.00%

80.50%

respectively.ConclusionTransabdominal gastric-fillingultrasonography has certain diagnostic value for gastric motility disorders in functional dyspepsia patients.