단순 두부 촬영상에 있어서 두부 손상에 관한 방사선학적 연구

조준식 충남대학교 의과대학 지역사회의학연구소 1978 충남의대잡지 Vol.5 No.2

Along with the development of material civilization, various kinds of accidents including traffic accidents are on the steady increase. Of these cases, the head trauma is very serious in condition and requires accurate diagnosis and treasment. Out of the 300 cases of head trauma patients, we observed how simple skull X-ray exmination had influenced on the clinical diagnosis and treatment in Chungnam National University Hospital from April 1977 to March 1978. 1. Skull fracture detected in the 90 patients of 300 patients which were injured head, trauma. 2. The sex and age incidence of head trauma were 229 men(76.3%) and 71womon (23.7%) ant commonly noted in the second, third decade. 3. The commonest cause of head trauma was the traffic accident(42.7%) and the next were local trauma by object, falls. 4. The fracture of skull valult was most frequent and the linear fracture had a majors 5. There was no specific relationship between the incidence of skull fracture, clingy symptoms, and physical findings. 6. The admission of patients were increased in the case of the detection of skull fracture but was not influenced the afterward treatment. 7. The mortality rate of head trauma was 11. 7% and in 19 patients (54. 3%) were associated with fracture and in 16 patients (45. 7%) were no fracture. There was no specific relationship between the mortality rate and skull fracture.

위암에 의한 간 전이의 CT 진단에 있어 조영제의 급속 정맥주사방법을 이용한 문맥기 역동적 CT의 유용성 : Usefulness of Bolus Dynamic CT During Portal Phase

조준식,송창준,김종철,이병철 충남대학교 의과대학 지역사회의학연구소 1994 충남의대잡지 Vol.21 No.2

Purpose : We evaluated the usefulness of dynamic CT during portal phase with faster injection rate of contrast material in detecting hepatic metastases from gastric cancers. Subjects and Methods : We retrospectively analyzed two-phase dynamic CT findings (portal phase and equilibrium phase) in 17 patients with pathologically proven gastric cancers and hepatic metastases. In 13 patients, a total of 150ml of nonionic contrast material was administered with a power injector at a flow rate of 5ml/sec for 30 sec, and two-phase images were obtained at 45-70 sec (portal phase) and 2-4 min (equilibrium phase) after the start of bolus injection. In four patients, two-phase dynamic CT with spiral technique was performed with the same method. Results : In cases of metastases less than 1 cm in diameter, 65 lesions were detected in the portal phase that showed clearly defined hypodense lesions in highly enhanced hepatic parenchyma. Whereas, only nine (14%) lesions were detected in the equilibrium phase and the remaining 56(86%) lesions showed isoattenuation. In cases of metastases more than 1 cm in diameter, 37 lesions were detected in the portal phase that showed clearly defined hypoattenuations. whereas, the images of equilibrium phase showed isoattenuation in five (14%), mixed attenuation in three (8%), and hypoattenuation in 29 (78%). The lesions detected in the equilibrium phase showed poorly defined hypodense lesions and tended to decrease in size due to peripheral enhancement of lesions. Conclusion : Dynamic CT during portal phase with faster injection rate of IV contrast material is an useful technique in detecting hepatic metastases from gastric cancers, particularly small lesions less than 1 cm in diameter.

비정형 데이터를 이용한 여가통행 행태 추정: 서울시 한양도성을 중심으로

조준식,곽주현,구동균,유연택,이승재 대한교통학회 2023 대한교통학회지 Vol.41 No.1

Recently, as the types of leisure activities have diversified and the leisure traffic has increased, individual travel patterns have become more complex. It is impossible to precisely track non-daily travel with the existing survey method. Therefore, this study attempted to estimate leisure travel behavior by collecting social media platform information that is easy to grasp leisure activities and using text mining techniques. First, Instagram posts were collected for Hanyang City Wall in Seoul. The collected text data was extracted into a total of four leisure types: social, exercise, tourism, and rest by applying the Latent Dirichlet Allocation (LDA). After that, hot spot analysis using Kernel Density Estimation (KDE) was conducted to understand how each leisure activity is spatially distributed in Hanyang City Wall. Social-type activities occurred relatively much in the eastern region, exercise-type activities in the northwest, tourism-type activities in the central region, and rest-type activities in the southern region. In addition, a Geographically Weighted Regression (GWR) was conducted to find out how the characteristics of leisure activities by region affect the mode choice behavior. The more social/tourism-type activities were observed, the more traffic increased, and the more exercise/ rest-type activities were observed, the more traffic decreased. By region, social/tourism-type activities greatly increase the use of transportation in the northern region, and exercise/rest-type activities greatly reduce the use of each means in the central region. 여가활동의 종류가 다양해지고 여가 통행의 수가 증가하면서, 개개인의 통행 패턴은 더욱 복잡해졌다. 이에 따라 기존의 설문조사 방식으로는 비일상 통행 데이터를 정확하게 구축하는 것이 불가능해졌다. 따라서 본 연구에서는 여가활동 파악이 용이한 소셜 미디어 플랫폼 정보를 수집하고, 텍스트마이닝 기법을 활용함으로써 여가통행 행태를 추정하고자 하였다. 먼저, 서울시 한양도성을 대상으로 인스타그램의 게시물을 수집하였다. 수집된 텍스트 데이터는 Latent Dirichlet Allocation(LDA) 모델을 적용함으로써, 사교, 운동, 관광, 휴양의 총 4개의 여가 유형으로 추출되었다. 이후 각각의 여가활동들이 한양도성 내에서 공간적으로 어떻게 분포하고 있는지 파악하기 위해, Kernel Density Estimation(KDE)를 활용한 핫스팟 분석을 시행하였다. 시행 결과, 상대적으로 사교형 활동은 동부지역, 운동형 활동은 서북부지역, 관광형 활동은 중부지역, 휴양형 활동은 남부지역에서 많이 발생한 것으로 확인되었다. 또한, 지역별 여가활동 특성들이 통행수단 선택행위에 어떠한 영향을 미치는지 알아보기 위해 Geographically Weighted Regression(GWR) 분석을 실시하였다. 분석 결과, 사교형 및 관광형 활동이 많이 관측될수록 교통량이 증가하였고, 운동형 및 휴양형 활동은 많이 관측될수록 교통량이 감소하였다. 지역별로는 북부지역의 경우 사교형 및 관광형 여가활동이 교통수단 이용량을 크게 증가시키며, 중부지역에서는 운동형 및 휴양형 여가활동이 각 수단별 이용량을 크게 감소시키는 것으로 분석되었다.

하부요추의 facet관절의 정위 및 형태에 관한 전산화 단층 촬영소견 : 비대칭성 facet과 추간판탈출증과의 상관관계에 대하여

조준식 충남대학교 의과대학 지역사회의학연구소 1986 충남의대잡지 Vol.13 No.2

The facet joints are parts of spinal motion segments and the range of motion in motion segment greatly depend on differences in orientation and shape of fact joints. The correlation between the asymmetry of facet joints and disc herination was studied with CT at the vertebral levels 4-L 5 and L 5 -S 1 in 56 cases with lower back pain and sciatica during period from April 1984 to Aug 1986. The result were as follows : 1. Thee mean value of the degree of facet angle at L4 -L5 was found to be 42.0±11.66° and 46.4±10.7° for left and right side, respectively. 2. The mean value of the degree of facet angle at L5-S1 was found to be 40.4±10.6° and 40.6±11.0° for left and right side, respectively. 3. The orientation and shape of facet joints at L4-L5 were more sagittally oriented any asymmetrically angled than facet joints at L5-S1. Righr facet joints at L4-L5 were more sagittally oriented than left facet joints. 4. The high correlation between asymmetry of facet joints and disc herination at L4-L5 was found but no significant correlation was found at L5-S1.

위암의 진단방법으로 CT스캔의 역할

조준식 대한위암학회 2002 대한위암학회지 Vol.2 No.4

위암의 진단에서 CT스캔은 수술 전 병기결정이나 수술 후 추적검사에서 필수적인 검사방법으로 인정을 받고 있고, 보편적으로 가장 많이 유용되고 있다. 그러나 나선식 CT를 사용하고 여러 가지 스캔방법의 개선에도 불구하고, 인접장기로의 직접침윤, 작은 크기의 간전이의 발견, 정상 크기범위의 림프절에서 전이의 발견, 양성 림프절과 전이의 감별, 복막전이에 대한 평가에서 지금까지의 보고들은 만족스러운 결과를 얻지 못하고 있으며 CT의 한계점으로 남아 있다. 그러나 최근에는 나선식 CT보다 더 빠른 시간내 더 얇은 두께의 절편을 얻을 수 있고, 이를 이용하여 관상면 및 시상면으로 정밀하게 재구성하거나 3D영상을 얻을 수 있는 다검출식 나선식 CT가 개발되어 사용되고 있고, CT 진단의 정확도를 높일 것으로 기대한다.

제 50 차 대한내과학회 추계학술대회 초록집 : 특발성 유두부 협착에 의한 폐쇄성 황달과 급성담관염 1 예

조준식,채보원,이세준,정준표,이관식,이상인,강진경,정재복,문영명 대한내과학회 1998 대한내과학회 추계학술대회 Vol.55 No.-

Development of semitransparent and bifacial CIGS solar cells for energy-harvesting window applications

조준식 한국공업화학회 2021 한국공업화학회 연구논문 초록집 Vol.2021 No.1

간농양의 초음파 소견

조준식 충남대학교 의과대학 지역사회의학연구소 1985 충남의대잡지 Vol.12 No.2

Author had analysed the ultrasonographic findings in 24 cases of liver abscess which were confirmed by needle aspiration and operation during the period from June 1982 to July 1985. The result were as follows: 1. Among total 24 cases, male was 16 cases and female was 8 cases. The majority of patients were in older individuals between the age of 40-69 years. 2. Right lobe was the most common involed site of liver abscess. Multiple lesions were 3 cases and all pyogenic. All the 5 cases of amebic abscess were single lesion and situated in right lobe. 3. Sonographic appearance of pygenic abscess was variable from anechoic to highly echogenic and usually well defined. The majority of amebic abscess were well defined and in all cases, round or oval anechoic and hypoechoic lesions which shown homogeneously weak internal echo and variable through transmission. 4. Poorly defined hypoechoic or slightly echogenic lesion with peripheral echo-free halo were proved to be early abscess in follow up study. 5. Analysis of sonogaphic findings of liver abscess with corresponding pathologic change enabled to make differentiation from other intrahepatic lesion. Early diagnosis of liver abscess by using ultrasound considered to be treated effectively without significant mortality.

플렉서블 실리콘 박막 태양전지 기술

조준식 한국공업화학회 2010 한국공업화학회 연구논문 초록집 Vol.2010 No.1

1992년도 춘계 학술강연 및 발표대회 개요 - 재료강도 ( 발표 22 ) : 기계합금화로 제조된 Ni 기 초내열합금의 고온거동

조준식,권숙인 대한금속재료학회 ( 구 대한금속학회 ) 1992 대한금속재료학회 학술대회 개요집 Vol.1992 No.1