• Journal of Biomedical Engineering Research
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• v.32 no.3
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• pp.251-256
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• 2011

Virtual colonoscopy is favored over conventional colonoscopy because its non-invasive procedure can avoid complications that may happen in a conventional approach and because it can cleanse colon electronically instead of uncomfortable conventional colon cleansing. Electronic Colon Cleansing(ECC) has to deal with not only removing tagged fecal material but also recovering Partial Volume Effect(PVE) due to tagging material. This paper proposes an ECC method restoring inherent natural PVE while previous approaches focused only on reducing PVE due to tagged fecal material. The proposed method reduces PVE using 3-dimensional adaptive density correction and then replaces tagged fecal material into air. Next, it generates natural PVE for the replaced air adjacent to soft tissue and finally makes smooth transition of gray values for soft tissue adjacent to the replaced air. The proposed method applied to eleven patient data, and showed promising results.

• Journal of Korean Clinical Nursing Research
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• v.16 no.1
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• pp.39-49
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• 2010

Purpose: The purpose of this study was to identify the effects of walking on discomfort and colon cleansing for patients having a colon lavage solution before colonoscopy. Methods: This study was a nonequivalent control group post test design. The participants were 89 patients (experimental group: 47, control group: 42) who underwent colonoscopy at G hospital in Incheon. The two groups put on step counter for an hour while taking the colon lavage solution. The experimental group was made up of patients who walked over 3,000 steps and the control group of those who walked less than 3,000 steps. Discomfort was measured using VAS and colon cleansing was measured by a specialist. Collected data were analyzed using $x^2-test$, t-test with SPSS/PC+ window version 15.0. Results: Walking while taking the colon lavage solution decreases abdominal pain before colonoscopy. Also one hour after taking the colon lavage solution, decreased nausea, abdominal pain and discomfort were found in the group which walked over 3,000 steps. Concluson: Based on the above findings, adequate walking can be used as a nursing intervention to increase comfort in patients undergoing colonoscopy.

• Asian Pacific Journal of Cancer Prevention
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• v.16 no.18
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• pp.8351-8358
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• 2016

Electronic cleansing is an image post processing technique in which the tagged colonic content is subtracted from colon using CTC images. There are post processing artefacts, like: 1) soft tissue degradation; 2) incomplete cleansing; 3) misclassification of polyp due to pseudo enhanced voxels; and 4) pseudo soft tissue structures. The objective of the study was to subtract the tagged colonic content without losing the soft tissue structures. This paper proposes a novel adaptive method to solve the first three problems using a multi-step algorithm. It uses a new edge model-based method which involves colon segmentation, priori information of Hounsfield units (HU) of different colonic contents at specific tube voltages, subtracting the tagging materials, restoring the soft tissue structures based on selective HU, removing boundary between air-contrast, and applying a filter to clean minute particles due to improperly tagged endoluminal fluids which appear as noise. The main finding of the study was submerged soft tissue structures were absolutely preserved and the pseudo enhanced intensities were corrected without any artifact. The method was implemented with multithreading for parallel processing in a high performance computer. The technique was applied on a fecal tagged dataset (30 patients) where the tagging agent was not completely removed from colon. The results were then qualitatively validated by radiologists for any image processing artifacts.

• Journal of KIISE:Software and Applications
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• v.35 no.8
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• pp.493-500
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• 2008

This paper proposes an electronic colon cleansing method using a patient CT profile for a virtual colonoscopy. The proposed method extracts the colon using cubic seeded region growing, and removes tagged materials adjacent to the colon. Residuals produced by a partial volume effect at the boundary of air-tagged material are deleted, and the removed soft tissue pixels due to a partial volume effect at the boundary of tagged material-soft tissue are recovered using a patient CT profile. The proposed method was applied to 16 virtual colonoscopy patient data sets, and produced promising results by a subjective evaluation of a radiologist and by a quantitative evaluation of a computer-aided diagnosis system.

• Journal of Korean Clinical Nursing Research
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• v.18 no.3
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• pp.391-401
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• 2012

Purpose: The purpose of this study was to identify the effects of aroma inhalation therapy on nausea, vomiting, abdominal discomfort, compliance, and colon cleansing for patients having a colon lavage solution before colonoscopy. Methods: This study was performed using a nonequivalent control group post-test design. The study was conducted from 20 Jun to 29 Aug, 2011. The participants were 152 patients (experimental group: 77, control group: 75) who underwent colonoscopy at A hospital, Seoul. Results: The experimental group with the aroma inhalation therapy reported significantly lower nausea and vomiting than did the control group. There were no significant differences in abdominal discomfort, compliance, and colon cleansing between experimental and control group. Conclusion: Use of an aroma inhalation therapy was efficient in nausea and vomiting among patients having a colon lavage solution before colonoscopy. Therefore, aroma inhalation therapy is recommended as an effective nursing intervention for relieving nausea and vomiting among patients having a lavage solution before colonoscopy.

• The Korean Nurse
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• v.29 no.3
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• pp.25-35
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• 1990

It is a fact that there are recent increasing trends or incidence of the colorectal carcinoma among other colorectal diseases. In such trend, the early detection remain to be most important by the air contrast barium enema and total colonofiberscopy. There are several ways to prepare the colon for barium enema and colonofiberscopy which include several agents. The mechanical cleansing have been used most frequently since Brown's method was adapted to be most perfect for colon deansing. The ideal laxatives and enema solutions were limited to adequate dose, it's effectiveness, patient's diet and bowel habit, minimal side effect, low cost and simple to perform. In order to compare the effectiveness of various cleansing solutions, six experimental methods were formed as shown; 1. normal saline enema, 2. castor oil with normal saline enema, 3. castor oil with soap suds enema, 4. magnesium citrate with normal saline, 5. magnesium citrate with soap suds enema and 6. ingestion of Golyetly solution. The authors have compared and determined the degree of cleanness by an experienced endoscopist. The total number of patients was 247, age distribution was $43{\pm}15$ years old, and sex distribution was 133 males and 114 females. The grade I and II represented no difficulties at performing the colonofiberscopy, but grade ill and N had some difficulties, even unable to perform the colonofiberscopy. The effectiveness the cleansing agents, represented with grade I and II was 95.9% (47/49) in method 6, 93.2%(54/58) in method 2, 83.3%(30/33) in method 3, 70.0%(28/10) in method 5, 66.7%(16/24) in method i, and 45.7%(18/40) in method 4. Method 2 and 6 were the most effective in normal bowel habit patients. In constipated patients, method 6 was the most effective and all method except method 11 were effective in diarrhea patients. The degrees of less mucosal irritation by various bowel cleansing method were in the order of method 6(100%), 1(100%), 5(74%), 2(69%). In subjective symptoms and cleansing groups, abdominal distension, pain, nausea and vomiting were complained, and that's subject symptoms were in the order of method 3(88.9%), 6 (79.6%), 1(75%), 5(72.5%), 2(72.4%), 4(67.5%). In conclusion, we believe that the Golytely of the mechanical cleansing solution for colonofiberscopy was the most effective, but others depended on the patient's condition und bowel habit.

• Journal of Korean Medicine for Obesity Research
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• v.5 no.1
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• pp.31-45
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• 2005

Background and Objectives : Constipation is a common digestive disorder and enema is one of the external intervention for constipation. Coffee enema was originated by Dr. Gerson for the purpose of colon cleansing and detoxification. However there has been no study about the effect of coffee enema on constipation. Therefore, this study was planned to evaluate the effect of coffee enema on constipation in the terms of constipation degree and satisfaction questionnaire. Methods : 42 patients were treated of the coffee enema 2 times a week. The constipation score(Constipation Assessment Scale) and frequency of defecation were checked 3 times (before treatment, 1 week and 1 month later). The satisfaction score was also checked 1 week and 1 month later. The interval differences of constipation score between pre- and post-treatment according to body mass index were also analyzed. Results and Conclusions : The constipation scores, frequency of defecation scores checked 1 week and 1 month later were significantly(p<0.01) improved as compared with those before the treatment. The satisfaction scores were close to 'moderately satisfied' 1 week and 1 month later. The scores of 6 parameters in constipation assessment scale, frequency of defecation scores and satisfaction scores were maintained until 1 month later. There was no significant difference in the change of constipation scores between normal BMI and overweight group. 4.2% of the patients reported adverse effects, which were nausea, abdominal distension each.