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Implementation of Chest X-ray Observation Report Entry System
김윤년,서석태,박희준,김민수,손창식,박형섭,전효찬,정치영 대한의료정보학회 2010 Healthcare Informatics Research Vol.16 No.4
Objectives: X-rays are widely used in medical examinations. In particular, chest X-rays are the most frequent imaging test. However, observations are usually recorded in a free-text format. Therefore, it is difficult to standardize the information provided to construct a database for the sharing of clinical data. Here, we describe a simple X-ray observation entry system that can interlock with an electronic medical record system. Methods: We investigated common diagnosis indices. Based on the indices, we have designed an entry system which consists of 5 parts: 1) patient lists, 2) image selection, 3) diagnosis result entry,4) image view, and 5) main menu. The X-ray observation results can be extracted in an Excel format. Results: The usefulness of the proposed system was assessed in a study using over 500 patients' chest X-ray images. The data was readily extracted in a format that allowed convenient assessment. Conclusions: We proposed the chest X-ray observation entry system. The proposed X-ray observation system, which can be linked with an electronic medical record system, allows easy extraction of standardized clinical information to construct a database. However, the proposed entry system is limited to chest X-rays and it is impossible to interpret the semantic information. Therefore, further research into domains using other interpretation methods is required.
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김윤년,강영우,전영준,송홍석,조진환,조준찬,박이태 대한내과학회 1986 대한내과학회지 Vol.30 No.2
Primary mediastinal seminoma is a rare germ cell tumor histologically identical to testicular seminoma. We experienced one case of Primary mediastinal seminoma recently. He was 51-year old, and complained of progressively severe anterior chest pain and dyspnea for 3 weeks before the time of diagnosis. Echo-cardiogram showed massive pericardial effusion in anterior portion of the right ventricle and posterior portion of the left ventricle with thickened pericardium, During admission, cardiac tamponade was developed, and pericardiectomy was performed. But we couldn`t excised totally because of severe adhesion of anterior mediastinal structures. Pathological findings were pure seminoma developed in thymus with fibrosis and organized hemorrhage in pericardium and pericardial peel. In our case seminoma is associated with possibly tuberculous constrictive effusive pericarditis. We treated with combination chemotherapy followed by irradiation with favorable results.
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김윤년,송홍석,곽동협 대한내과학회 1986 대한내과학회지 Vol.30 No.2
A clinical review was done retrospectively on 105 patients with histiocytic lymphoma who visited to the Dong San Medical Center between Jan. 1974 and Aug, 1984, The results of the this study were as follows: JVIale to female ratio was 1.56:1 with male predorminance and the age distribution was between 4 and 82 with mean age of 44,7 years. Palpable neck mass was the most frequent complaint(52cases: 49.5%). Abdominal pain, fever were observed in 14 cases (13.3%) respectively and abdominal mass in 11 cases(10.5%), weight loss in 9 cases(8.6%), throat pain in 9 cases(8.6%) and abdominal swelling in 8 cases(7.6%). Physical findings revealed lymph node enlargement in 74cases (70.5%) with cervical, inguinal, axillary, mesenteric and supraclavicular in order of frequency. Hepatomegaly was observed in 17.1% splenomegaly in 2.5% and abdominal mass in 20cases(19.0%). Extranodal involvement was observed in 71 cases(67.6%) and organs of involvement were as follows: GIT in 18 cases(17.1%), waldeyer`s ring in 17 cases(16.2%), skin in 16 cases(15.2%) liver in 7 cases(6.7%), bone in 6 cases(5.7%), bone marrow in 5 cases(4.8%), retroperitoneum in 5 cases(4.8%), anterior nasal cavity in 4 cases(3.8%), lung and pleura in 2 cases(l.9%) respectively. Laboratory findings revealed anemia in 47.1%, leukocytosis in 27.5%, leukopenia in 14.7% lymphopenia in 43.4%, hypoalbuminemia in 31.5%, azotemia in 10.4%, increased alkaline phosphatase in 13.9% and hypercalcemia in 8.2%. By Ann Arbor staging, stage I was in 23cases (21.9%), stage g in 34cases(32.4%), stage III in 16cases(15.2%), stage g in 32 cases(30.5) and stage B in 20 cases(27.6%). Treatment was performed as follows: Radiotherapy in 20 cases, combination chemotherapy in 18 cases and combined modality therapy in 8 cases. After treatment, 5 year survival rate was 72.2% in adequately treated patients. 2 year survival rate was 83.4% in complete remission group and 58.6% in partial remission group and there was no long-term survival in patients with partial remission.
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A New Method of ECG Feature Detection Based on Combined Wavelet Transform for u-health Service
김윤년,김민수,서석태,조영창,손창식 대한의용생체공학회 2011 Biomedical Engineering Letters (BMEL) Vol.1 No.2
Purpose The analysis of the ECG is required of accuracy for diagnosing many cardiac diseases. In this work, we propose an algorithm using wavelet transform to analyze and classify ECG (electrocardiogram) signal obtained from the developed patch type electrode. This paper presents a new combined wavelet transform artificial neural network (CWTANN) based system for classification and detection of QRS complex, P and T waves. CWTANN provided useful information for detection of cardiac disease or abnormality. Methods In this paper, we proposed a method to detect characteristic waves, such as P, QRS and T wave from abnormal ECG signal. Daubechies, Coiflets and Symlets order 5 wavelet transform were applied to the ECG. The methods have been proven out for detection of normal signal,ventricular tachycardia (VT) and PVC (premature ventricular contraction) in the ECG through subband decomposition and combined wavelet transform. Results From the results, the detection rate achieved was 96.2% for off-line classification, which is indeed a good rate of accuracy for data recognition. Using the simple proposed wavelet scheme, the developed methodology achieves higher detection rates. Conclusions The proposed ECG detection method can be used P, QRS, T wave detection by sum of combined scale using DWT. Thus the clinical use of the methodology is to be beneficial in the analysis of various heart diseases. The new CWTANN method is expected used in monitoring of ECG for mobile home healthcare applications.
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