내시경과 복부초음파 당일 검사에서 복부초음파 영상의 화질 개선에 관한 연구

Abstract

SNR and CNR were evaluated to investigate using for harmonic technique, Compositeimage and technique to reduce speckle artifact reducing the stomach, duodenum, and intestinalgas artifacts through transducer compression and position changes to obtain a good image ofthe abdominal organs (centered on the pancreas) in abdominal ultrasonography performedafter gastroscopy, abdominal ultrasound examination after colon cleansing and abdominalultrasonography performed after simultaneous gastroscopy and colonoscopy. Statistical analysiswas performed using Robust Analysis of Variance, which was performed using the raov functionof Rfit and the raov function including the main effect and all order interactions. We calculatedthe rank - based variance analysis for all 2k - 1 hypotheses. The statistical program was analyzedwith the Rov function of the Rfit package of the R program and the post test for the significantresults was calculated through the least significant difference (the significance correction usingthe Hochberg method). The following conclusions were quantitative and qualitative analysis ofpancreatic head images of examines who examined endoscopy and abdominal ultrasonographyon the day of health examination. In quantitative evaluation, SNR and CNR showed statisticallysignificant differences in abdominal ultrasonography, abdominal ultrasonography, and weightgroup, and there was a significant interaction between abdominal ultrasonography and weight group. The results of qualitative evaluation showed that there were differences in the clarity,internal structure, and visual range of the pancreatic head according to the pressure and thechange of the position, and the order of abdominal ultrasonography and weight group wereaffected. Quantitative and qualitative analysis showed that the use of harmonic, real-timesynthetic imaging technique, and reduction of the speckle artifact were performed in the caseof normal body weight. Abdominal ultrasonography can be performed after endoscopic, postoperative,intestinal, and gastrointestinal endoscopic examinations with appropriate transducercompression and changes in position according to intraperitoneal gas and fluid flow in theintestinal tract. Patient with overweight, it is appropriate to perform abdominal ultrasonographybefore gastroscopy and after gastroscopy. In the case of obesity, abdominal ultrasonographyshould be performed before endoscopy to avoid obstruction of artifacts such as gastric andintestinal gas and intestinal fluid by attenuation due to subcutaneous fat or visceral fat of theabdominal wall. In order to remove stomach and intestinal gas that should be using for harmonictechnique, Composite image and technique to reduce speckle artifact.