• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2018.05a
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• pp.363-365
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• 2018

대장과 소장에서 모두 폐색 영역을 검출하기 위하여 본 논문에서는 기존에 연구된 장 폐색 영역 검출 방법과 ART2 알고리즘을 이용한 대장 폐색 영역과 소장 폐색 영역을 검출하는 방법을 제안한다. 제안된 방법은 기존에 연구된 방법을 이용하여 ROI 영역을 추출한 후, 추출된 ROI 영역을 ART2 알고리즘을 이용하여 영상을 군집화 한다. 군집화된 ROI 영역과 기존에 연구된 방법으로 X-ray 영상에서 검출한 장 폐색 영역의 형태학적 특징을 비교 및 분석하여 장 폐색의 형태학적 특징을 포함하는 클러스터를 분석한다. 따라서 장 폐색 영역에 해당되는 클러스터로 분류된 영역 내부를 클러스터의 중심에 해당되는 픽셀로 모두 대체한다. 그리고 $3^*3$ 필터를 이용한 침식과 팽창 연산을 적용하여 잡음을 제거한다. 잡음이 제거된 영상에서 각 객체들을 라벨링한 후에 크기를 비교하여 배경과 기타 지방 영역을 제거하고 남은 객체들을 장 폐색 영역으로 검출한다. 제안된 추출 방법을 장 폐색 X-ray 영상을 대상으로 실험한 결과, 기존에 연구된 방법으로 추출에 성공한 대장 장 폐색 영상과 추출에 실패한 소장 폐색 영상 모두에서 추출되는 것을 확인하였다.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.24 no.12
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• pp.1618-1624
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• 2020

Intestinal obstruction diagnosis method based on X-ray can affect objective diagnosis because it includes subjective factors of the examiner. Therefore, in this paper, a detection method of Intestinal Obstruction from X-Ray image using Hough transform and PCM is proposed. The proposed method uses Hough transform to detect straight lines from the extracted ROI of the intestinal obstruction X-Ray image and bowel obstruction is extracted by using air fluid level's morphological characteristic detected by the straight lines. Then, ROI is quantized by applying PCM clustering algorithm to the extracted ROI. From the quantized ROI, cluster group that includes bowel obstruction's characteristic is selected and small bowel regions are extracted by using object search from the selected cluster group. The proposed method of using PCM is applied to 30 X-Ray images of intestinal obstruction patients and setting the initial cluster number of PCM to 4 showed excellent performance in detection and the TPR was 81.47%.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2017.10a
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• pp.488-490
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• 2017

본 논문에서는 장폐색 영역을 추출하는 방법을 제안한다. 제안된 방법은 Canny Edge Detector을 이용하여 X-ray 영상에서 객체들의 에지를 추출한다. 검출된 객체 에지들에서 장폐색의 영역이 형태학적으로 수평적으로 평평하다는 특징을 이용하기 위해서 Hough transform을 적용하여 수평적으로 평평한 영역을 가진 객체들을 추출하고, 추출된 객체들을 장폐색 영역으로 검출한다. 제안된 추출 방법을 25개의 장폐색 X-ray 영상을 대상으로 실험한 결과, 제안된 방법에서는 19개 대장 장폐색 영상에서는 모두 추출되었으나 6개의 소장 장폐색 영상에서는 추출에 실패하였다.

• Journal of Digestive Cancer Research
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• v.1 no.1
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• pp.1-5
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• 2013

Incidence of colorectal cancer has been increasing in Korea probably due to the westernized life style. Although the technical development of colonoscopy and introduction of screening examination has led to the detection of early colorectal cancer, considerable patients still have clinical symptoms of colorectal obstruction. Most of these patients are old and they have advances stage of cancer or severe co-morbidities. In addition, the emergency operation under poor preparation state of colon can lead to serious mortality or complications. Since the introduction of colorectal stent, there have been a large number of studies for recent 10 years. It seems that the role of colorectal stent in the palliative indication or bridge to surgery has been recognized. A well designed, randomized prospective study with long term data is necessary to support the role of colorectal stent in the malignant colorectal obstruction.

• Journal of Hospice and Palliative Care
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• v.8 no.2
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• pp.200-208
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• 2005

Purpose: Palliative procedures or surgical interventions not only manage various symptoms of malignant gastrointestinal obstruction, but also improve the quality of life. We investigated the clinical characteristics and prognostic factors of terminal cancer patients with palliative procedures for malignant gastrointestinal obstruction. Methods: We retrospectively reviewed the medical records of 48 terminal cancer patients with palliative procedures for malignant gastrointestinal obstruction at Sam Anyang hospital from May in 2002 to May in 2005. We excluded patients with palliative tumor resection. We analyzed prognostic factors in symtom-free survival and overall survival using Kaplan-Meier method, univariate and multivariate analysis. Results: There were 25 males (52%) and 23 females (48%), and median age of 48 patients was 65 years. The most common cause of malignant gastrointestinal obstruction was colorectal (26 patients, 55%), followed by stomach (10, 21%). Twenty patients (42%) received previous treatment (chemotherapy, surgery, and radiotherapy) and 28 (58%) never received any. Eighteen of 20 had received chemotherapy. The most common symptom was pain (15 patients, 31%). Twenty three patients (48%) had Eastern Cooperative Oncology Group(ECOG) performance status of 1 or 2 score and 25 patients (52%) 3 or 4 score. The most common palliative procedure was colostomy and there was no mortality concerning the palliative procedures. By univariate and multivariate analysis, performance status was the only independent prognostic factor in overall survival and symptom-free survival. Overall survival was 150 days and symptom-free survival was 90 days. Conclusion:. We confirmed that perftatdormance status is significant independent prognostic factor in terminal cancer patients with palliative procedures for malignant gastrointestinal obstruction.

• Journal of Hospice and Palliative Care
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• v.7 no.2
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• pp.214-220
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• 2004

Purpose: As for the malignant bowel obstruction of terminal cancer patient, a prognosis is relatively bad. Physicians consider palliative procedures or surgery for the quality of life, but sometimes it is hard to decide. After diagnosis of a malignant bowel obstruction in terminal cancer patients, we investigated the clinical characteristics, the prognostic factors and the survival of patients with palliative procedures or surgery. Methods: we retrospectively reviewed the medical records in 40 malignant bowel obstruction patients who had been diagnosed as terminal cancer from May in 2002 to May in 2004. Results: There were 21 males (53%) and 19 females (47%), and median age of patients was $64.1{\pm}1.58$ years. The most common cause of malignant bowel obstruction was colorectal cancer (18 patients, 45%), followed by stomach cancer (11, 28%), pancreatic cancer (4, 10%), others (7, 19%). Metastases were carcinomatosis peritonei (14 patients, 35%), liver (13, 33%). During a bowel obstruction, symptoms were vomiting (15 patients, 38%), abdominal pain (10, 25%), constipation (6, 15%), abdominal distension (5, 13%). Performance status (ECOG) was 2 score (16 patients, 40%), 3 score (20, 50%), 4 score (4, 10%). Palliative procedure group were 30 patients, the others 10. Median survival in palliative procedure group was 142 days, that of no palliation group 30. Median survival time of palliative procedure group from palliative procedures or surgery were significantly higher than that of no palliation group from diagnosis of malignant bowel obstruction. Prognostic factors of palliative procedure group were PS, site of obstruction and primary cancer. Median survival in PS 2, lower GI obstruction and colorectal cancer was higher than PS 3, upper GI obstruction and others, respectively. Conclusion: we recommend aggressively palliative procedures or surgery in malignant bowel obstruction patients diagnosed with terminal cancer if palliative procedures or surgery could be performed effectively.

• Journal of the Korean Orthopaedic Association
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• v.56 no.4
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• pp.357-360
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• 2021

The incidence of postoperative ileus (POI) after colonic and abdominal surgery is high. On the other hand, the reported incidence after lower extremity reconstruction ranges from 0.3% to 4.0%. This paper reports an 81-year-old woman who expired due to POI at six days after primary total knee arthroplasty. The risk factors, diagnosis, preventive methods, and treatment of POI were also investigated through literature reviews.

• Journal of Veterinary Clinics
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• v.27 no.1
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• pp.113-116
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• 2010

A 6-years-old 30 kg male Germen Shepherd dog was presented with the history of abdominal pain, intermittent vomiting and anorexia. Abdominal survey radiography and ultrasonography revealed marked colonic distention. Positive contrast radiography revealed a colonic obstruction between the transverse colon and descending colon. Foreign bodies were identfied during colonoscopy. The descending colon was inflated by the air of endocope then foreign bodies were moved to the descending colon. Foreign bodies were removed by the enema. The dog's clinical signs resolved following foreign body removal.

• Tuberculosis and Respiratory Diseases
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• v.63 no.4
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• pp.362-367
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• 2007

Hormonal replacement therapy (HRT) has been proven for treatment of postmenopausal symptoms such as hot flushes, night sweats and urologic symptoms. HRT became very popular in the 1990's, when there were several reports showing that it also helped with other menopausal complications such as osteoporosis and cardiovascular disease. Recent studies report that the incidence of breast cancer, endometrial cancer, cerebral infarction, coronary artery diseases, deep vein thrombosis and pulmonary thrombembolism could rise after HRT. Among these side effects of HRT, the risk of pulmonary thromboembolism increases 2 to 4 fold after HRT, but can vary with the use of different doses and preparations. Here, we summarize the risk factors and clinical courses for 5 patients who developed pulmonary thromboembolism after postmenopausal HRT.

• Journal of Digestive Cancer Research
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• v.12 no.1
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• pp.15-22
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• 2024

Malignant colorectal obstructions urgently require decompression therapy to prevent the severe risks of intestinal ischemia and bowel perforation. In managing malignant colonic strictures endoscopically, the use of self-expandable metal stents (SEMS) is the predominant approach. Colonic SEMs are primarily used in preoperative decompression therapy before curative surgery and palliative treatment in patients with advanced disease stages. Furthermore, the stenting process, which requires rigorous clinical supervision, can lead to complications. This review endeavors to concisely review the clinical considerations associated with the SEMS procedure, with a focus on its indications, technical aspects, and potential complications that may arise during the procedure.