[Comparative study of gray scale ultrasonography and radiography in diagnosis of gastrointestinal tract diseases].

Thirty-seven cases of gastrointestinal (GI) tract diseases proven by operation and pathology were analysed according to gray scale ultrasonographic and radiographic manifestations and diagnoses. The authors consider that X-ray examination remains the first choice for detection of GI diseases; additional information may be obtained through sonography by displaying internal structure of the lesions, extent of tumor infiltration and metastasis if present. Sonography examination can supplement the roentgen findings. Therefore, combination of both methods will improve the accuracy of diagnosis of GI diseases.