No abstract available

[en] 70 cases of gastric mucosal erosions were diagnosed by double contrast upper gastrointestinal examinations and endoscopic findings. Analyzing the radiologic findings of these 70 cases of gastric mucosal erosions, the following results were obtained. 1. Among the total 70 cases, 65 cases were typical varioliform erosions showing central depressions and surrounding mucosal elevations. Remaining 5 cases were erosions of acute phase having multiple irregular depressions without surrounding elevations. 2. The gastric antrum was involved alone or in part in all cases. Duodenal bulb was involved with gastric antrum in 4 cases. 3. The majority of the cases had multiple erosions. There were only 2 cases of single erosion. 4. In 65 cases of varioliform erosions; 1) The diameter of the surrounding elevations varied from 3 to 20 mm with the majority (47 cases) between 6 and 10 mm. 2) In general, the surrounding elevations with sharp margin on double contrast films were also clearly demonstrated on compression films but those with faint margin were not. 3) The size of the central barium collections varied from pinpoint to 10 mm with the majority under 5 mm. The shape of the central barium collections in majority of the cases were round with a few cases of linear, triangular or star-shape. 5. In 5 cases of acute phase erosions; 1) All the 5 cases were females. 2) On double contrast radiography, all the cases showed multiple irregular depressed lesions without surrounding elevations. 3) 1 case had the history of hematemesis. 4) In 1 case, there was marked radiological improvement on follow-up study of 2 months interval. 6. In 23 cases, there were coexistent diseases with gastric mucosal erosions. These were 13 cases of duodenal bulb ulcers,7 cases of benign gastric ulcers and 3 others

[en] In appropriate cases, information from a dynamic series of nuclear images may be condensed into a single image with one spatial and one temporal dimension. A useful elaboration of the method consists of the masking out of undesired spatial regions. The versatility of such condensed dynamic images is illustrated by examples derived from gastroesophageal and pulmonary studies. Advantages of the method include obviating the need to examine and comprehend multiple images as well as enabling economical archiving of image data. Its diagnostic potential is particularly evident in esophageal transit and infant gastroesophageal reflux studies

[en] To evaluate the relationship between endoscopic change in esophagogastric varices and post transjugular intrahepatic portosystemic shunt (TIPS) portal pressure reduction, and to study any difference in post-TIPS endoscopic change between esophageal and gastric varices. Sixty four patients who had undergone pre- and post-TIPS endoscopic examination were analysed. They were divided into two groups, Group 1 (n=3D40) and Group 2 (n=3D24), according to whether they had not or had, respectively, undergone post-TIPS residual variceal embolization. The varices were classified as either esophageal (n=3D54) or gastric (n=3D60). Post TIPS endoscopic change was evaluated as Grade 1 (complete disappearance), Grade 2 (partial disappearance), or Grade 3 (no change). Mean pressure reduction between the pre and post TIPS portosystemic pressure gradient was checked, and statistical correlation between mean portal pressure reduction and endoscopic change in Group 1 and Group 2 was evaluated using the ANOVA test. By means of the X² test, post-TIPS endoscopic change between esophageal and gastric varices was also evaluated. In Group 1, a significant statistical relationship was found between endoscopic change and mean portal pressure reduction (p less than 0.001), but in Group 2, no such relationship was found (p greater than 0.05). No significant statistical difference was found between endoscopic change in esophageal and in gastric varices (p greater than 0.05). In patients who had not undergone post-TIPS residual variceal embolization, endoscopic change in gastroesophageal varices correlated significantly with post-TIPS portal pressure reduction. With regard to post-TIPS endoscopic change, these was no significant difference between esophageal and gastric varices. (author)

No abstract available

[en] In this chapter, the author covers the following topics: Physiology of gastric emptying; Indications for the measurement of gastric emptying; Measurements of gastric emptying by external imaging; Biomedical radiography; and Analysis of gastric emptying

No abstract available

[en] One approach for non-invasively characterizing gastric electrical activity, commonly used in the field of electrocardiography, involves solving an inverse problem whereby electrical potentials on the stomach surface are directly reconstructed from dense potential measurements on the skin surface. To investigate this problem, an anatomically realistic torso model and an electrical stomach model were used to simulate potentials on stomach and skin surfaces arising from normal gastric electrical activity. The effectiveness of the Greensite–Tikhonov or the Tikhonov inverse methods were compared under the presence of 10% Gaussian noise with either 84 or 204 body surface electrodes. The stability and accuracy of the Greensite–Tikhonov method were further investigated by introducing varying levels of Gaussian signal noise or by increasing or decreasing the size of the stomach by 10%. Results showed that the reconstructed solutions were able to represent the presence of propagating multiple wave fronts and the Greensite–Tikhonov method with 204 electrodes performed best (correlation coefficients of activation time: 90%; pacemaker localization error: 3 cm). The Greensite–Tikhonov method was stable with Gaussian noise levels up to 20% and 10% change in stomach size. The use of 204 rather than 84 body surface electrodes improved the performance; however, for all investigated cases, the Greensite–Tikhonov method outperformed the Tikhonov method. (paper)

[en] How should gastric emptying data be summarized to allow comparisons between males or between groups of subjects within a study, and to facilitate comparisons of results from study to study. We review standardization issues for reporting gastric emptying data, discuss criteria for choosing a method of analysis, review methods which have been used to describe gastric emptying data, recommend trial of the power exponential curve, and illustrate its use in the analysis and interpretation of data from several studies involving different types of meals and different types of subjects. We show why nonlinear curves should be fit using nonlinear least squares

[en] Objective: To compare the outcome in early versus delayed oral intake in patients after cesarean section under regional anesthesia. Study Design: Quasi-experimental study. Place and Duration of Study: Department of Obstetrics and Gynecology, Combined Military Hospital Lahore, from Dec 2017 to May 2018. Methodology: A total of 352 women undergoing elective cesarean section under regional anesthesia, nil by mouth for at least 8 hours before surgery were divided in 2 groups. In group 1, patients were given sips of clear oral fluid (water) <5 hours after cesarean section and in group 2, patients received sips of water 8 hours following surgery. Bowel motility was assessed after surgery on hourly basis. Data about time interval to first bowel movement and ileus were noted. Results: Mean age of patients was 32.329 ± 3.44 years and 33.051 ± 3.64 years in group 1 and 2 respectively. Mean gestational age and body mass index was 38.50 ± 0.93 weeks and 29.824 ± 4.97 kg/m2 in group-1 versus 37.937 ± 0.98 weeks and 27.779 ± 2.81 kg/m2 in group 2. Mean duration of surgery was 47.096 ± 6.65 minutes in group-1 and 47.647 ± 8.76 minutes in group 2. Ileus was seen in 17% patients in group-1 and 34.1% in group-2 (p<0.001). Mean time interval for first bowel movement was 8.323 ± 1.20 hours in group-1 and 13.034 ± 2.54 hours in group 2 (p<0.001). Conclusion: Early feeding after an uncomplicated cesarean section has reduced rate of ileus symptoms and mean time interval for bowel movements to appear. (author)