• Journal of the Korean Society of Radiology
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• v.81 no.5
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• pp.1175-1183
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• 2020

Purpose To evaluate the technical feasibility and clinical efficacy of percutaneous transgastric stent placement after the failure of treatment attempt with the transoral approach in malignant gastroduodenal obstruction patients. Materials and Methods From October 2008 to April 2016, nine patients (M:F = 4:5; mean age = 66 years) with malignant gastroduodenal obstruction underwent stent placement via a gastrostomy tract, which was attributed to the failure of the transoral approach. The primary etiologies of the obstruction were pancreatic (n = 5), gastric (n = 2), and metastatic (n = 2) cancers. Through percutaneous gastrostomy, dual stents (inner bare metal and outer polytetrafluoroethylene-covered) were deployed at the obstruction site. The technical and clinical success rates, as well as complications were evaluated during the follow-up period. Results Stents were successfully inserted in eight patients (88%). We failed to insert stent in one patient due to the presence of a tight obstruction. After stent placement, symptoms improved in seven patients. Gastrostomy tube was removed 9 to 20 days (mean = 12 days) after the stent insertion. During the mean follow-up of 136 days (range, 3-387 days), one patient developed a recurrent symptom due to tumor overgrowth. However, there were no other major complications associated with the procedure. Conclusion Percutaneous transgastric stent placement appeared to be technically feasible and clinically effective in patients who underwent a failed transoral approach.

• Proceedings of the KOR-BRONCHOESO Conference
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• 1981.05a
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• pp.5.3-6
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• 1981

There are too many kinds of esophageal corrosive agents, such as sodium hydrochloride, acetic acid, hydrochloric acid, etc. Esophageal burn due to above chemical agents are decreasing recently, but still many patients visited to the hospital because of swallowing corrosive agents for the purpose of suicide or accidentally. Among the treatment of corrosive injury of the esophagus, prevention of esophageal stricture is the key point. Recently various methods are using as the treatment of corrosive esophagitis and prevention of esophageal stricture. 51 cases of corrosive injury of the esophagus who had been admitted and treated at the Dept. of Otolaryngology, Han Yang University Hospital during past 9 years (from May 1972 to Dec. 1980) were evaluated and report the result about age distribution, sex incidence, monthly distribution, cause of swallowing, swallowing agents, arriving time at hospital after swallowing, changes on oral and pharyngeal mucosa, laboratory findings, emergency treatment and treatment during admission, treatment follow up results and complications with review of liter ature. Following results were obtained; 1. Female patients 27 cases (52.9%) were more than male patients 24 cases (47.1%) and its ratio was 1.13 : 1. 2. Age distribution showed predilection for age of 21-30 with 20 cases(39.2%), and 11-20 with 11 cases (21.6%), 31-40 with 7 cases(13.7%), over 50 with 7 cases (13.7%) were following. 3. Monthly distribution showed predilection for March with 8 cases(15.7%), and April, July with 7 cases (13.7%), September with 6 cases(l1.8%), October 5 cases(9.8%) were following. 4. For the purpose of suicide was the most cause of swallowing with 40 cases(78.4%), and accidentally swallowing 11 cases(21.6%). 5. Acetic acid was the most swallowing agent with 24 cases (47.0%), and hydrochloric acid 11 cases (21.5%), lye 8 cases(15.7%), iodine 2 cases(3.9%) were following. 6. Arriving time at the hospital after swallowing showed predilection for within 12 hours with 42 cases (82.4%), and from 12 hours to 24 hours with 4 cases(7.8%) was next. 7. Moderate change with injection and swelling was the prevalent change on oral and pharyngeal mucosa with 20 cases(39.2%) and severe cases with ulceration 18 cases (35.3%), mild cases with injection 10 cases (19.6%) were following. 8. Leukocytosis was seen on 40 cases (78.4%), and increased Hct. was seen 31 cases (60.8%). On urine analysis, 14 cases(27.5%) showed over 1.030 S.G., and proteinuria was seen on 25 cases(49.0%), glycosuria was seen on 5 cases(9.8%) and hematuria was seen on 6 cases(11.8). 9. Gastric lavage was done on 30 cases (58.8%) as emergency treatment and on 3 cases(5.9%) tracheostomy was done for the airway keeping. 10. As methods of treatment during admission, L-tube insertion was done on 50 cases (98.0%), antibiotics was given to 49 cases (96.1%), steroid and antacid were given to 46 cases(90.2%). 11. 36 cases(70.6%) were in favorable condition after proper treatment, but 2 cases (3.9%) were expired during admission, 4 cases (7.8%) showed esophageal stricture in-spite of treatment, and 1 case(2.0%) showed pyloric stenosis. 12. Complications were observed in 8 cases (17.7%). Renal failure (4 cases), aspiration pneumonia (2 cases), upper G-I bleeding (1 cases), and diabetic coma (1 cases) were seen in order of frequency.

• Journal of the Korean Society of Food Science and Nutrition
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• v.40 no.6
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• pp.885-891
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• 2011

We conducted this study to determine the optimum dose of gamma irradiation needed for the sterilization of milk porridge for patients. Milk porridge, known as Tarakjuk, was irradiated with gamma ray at doses of 0, 1, 3, 5, 7, or 10 kGy. The microbial contamination, $D_{10}$ values of isolated microbe spores, color, and viscosity were measured during storage at $35^{\circ}C$. The initial count of total aerobic bacteria was 2.60 log CFU/g in the non-irradiated milk porridge, but coliforms, spore-forming bacteria, yeast, and molds were not detected. The total counts of aerobic and spore-forming bacteria in the non-irradiated and 1 kGy irradiated milk porridge increased with storage period. These microbes were not detected in the milk porridge irradiated with 10 kGy. The $D_{10}$ values of isolated spores from milk porridge were 2.71 kGy (in milk porridge) and 2.21 kGy (in saline solution). All CIE color increased with gamma irradiation, but the sensory value of color did not significantly change. The viscosity of the milk porridge decreased with gamma irradiation and storage period, and the decrease in viscosity with storage period became smaller as the radiation doses increased. Sensory evaluation scores of the milk porridge were above normal (4.0) when irradiated with less than 5 kGy. These results indicate that gamma irradiation could be beneficial for preparing food with higher nutrient density and lower viscosity, especially for gastric tube-fed patients.

• Progress in Medical Physics
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• v.24 no.1
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• pp.76-83
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• 2013

Previous studies about effect of respiratory motion on diagnostic imaging and radiation therapy have been performed by monitoring external motions but these can not reflect internal organ motion well. The aim of this study was to develope the artificial pulmonary nodule able to perform non-invasive implantation to dogs in the thorax and to evaluate applicability of the model to respiratory motion studies on PET image acquisition and radiation delivery by phantom studies. Artificial pulmonary nodule was developed on the basis of 8 Fr disposable gastric feeding tube. Four anesthetized dogs underwent implantation of the models via trachea and implanted locations of the models were confirmed by fluoroscopic images. Artificial pulmonary nodule models for PET injected $^{18}F$-FDG and mounted on the respiratory motion phantom. PET images of those acquired under static, 10-rpm- and 15-rpm-longitudinal round motion status. Artificial pulmonary nodule models for radiation delivery inserted glass dosemeter and mounted on the respiratory motion phantom. Radiation delivery was performed at 1 Gy under static, 10-rpm- and 15-rpm-longitudinal round motion status. Fluoroscpic images showed that all models implanted in the proximal caudal bronchiole and location of models changed as respiratory cycle. Artificial pulmonary nodule model showed motion artifact as respiratory motion on PET images. SNR of respiratory gated images was 7.21. which was decreased when compared with that of reference images 10.15. However, counts of respiratory images on profiles showed similar pattern with those of reference images when compared with those of static images, and it is assured that reconstruction of images using by respiratory gating improved image quality. Delivery dose to glass dosemeter inserted in the models were same under static and 10-rpm-longitudinal motion status with 0.91 Gy, but dose delivered under 15-rpm-longitudinal motion status was decreased with 0.90 Gy. Mild decrease of delivered radiation dose confirmed by electrometer. The model implanted in the proximal caudal bronchiole with high feasibility and reflected pulmonary internal motion on fluoroscopic images. Motion artifact could show on PET images and respiratory motion resulted in mild blurring during radiation delivery. So, the artificial pulmonary nodule model will be useful tools for study about evaluation of motion on diagnostic imaging and radiation therapy using laboratory animals.

• The Korean Journal of Nuclear Medicine
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• v.4 no.1
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• pp.19-26
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• 1970

1. Sixteen normal healthy subjects free from occult blood in the stool were selected and administered with their $^{51}Cr$ labeled own blood via duodenal tube and the recovery rate of radioactivity in feces and urine was measured. The average fecal recovery rate was 90.7 per cent ($85.7{\sim}97.7%$) of the administered radioactivity, and the average urinary excretion rate was 0.8 per cent ($0.5{\sim}1.5%$) 2. There was a close correlation between the amount of blood administered and the recovery rate from the feces; the more the blood administered, the higher the recovery rate was. It was also found that the administration of the tagged blood in the amount exceeding 15ml was suitable for measuring the radioactivity in the stools. 3. In five normal healthy subjects whose circulating erythrocytes had been tagged with $^{51}Cr$, there was little fecal excretion of radioactivity (average 0.9 ml of blood per day). This excretion is not related to hemorrhage and the main route of excretion of such an negligible radioactivity was postulated as gastric juice and bile. 4. A comparison of the radioactivity in the blood and feces of the patients with $^{51}Cr$ labeled erythrocytes seems to be a valid way of estimating intestinal blood loss.