• Journal of Trauma and Injury
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• 제22권2호
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• pp.142-147
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• 2009

Purpose: Early diagnosis and management of therapeutic interventions are very important in chest trauma. Conventional chest X-rays (CXR) and computed tomography (CT) are the diagnostic tools that can be quickly implemented for chest trauma patients in the emergency department. In this study, the usefulness of the CT as a diagnostic measurement was examined by analyzing the ability to detect thoracic injuries in trauma patients who had visited the emergency department and undergone CXR and CT. Methods: This study involved 84 patients who had visited the emergency department due to chest trauma and who had undergone both CXR and CT during their diagnostic process. The patients' characteristics and early vital signs were examined through a retrospective analysis of their medical records, and the CXR and the CT saved in the Picture Archiving Communication System (PACS) were examined by a radiologist and an emergency physician to verify whether or not a lesion was present. Results: Pneumothoraxes, hemothoraxes, pneumomediastina, pulmonary lacerations, rib fractures, vertebral fractures, chest wall contusions, and subcutaneous emphysema were prevalently found in a statistically meaningful way (p<0.05) on the CT. Even though their statistical significance couldn' be verified, other disorders, including aortic injury, were more prevalently found by CT than by CXR. Conclusion: CT implemented for chest trauma patients visiting the emergency department allowed disorders that couldn' be found on CXR to be verified, which helped us to could accurately evaluate patients.

• 대한방사선협회지
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• 제25권1호
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• pp.171-176
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• 1999

The detection of X-ray fluoroscopy is tedious and time-consuming for human doing. Lowering of efficiency for chest diagnosis is caused by lots mistakes of radiologist because of detecting the micro pathology from the film of small size. Therefore, in the

• Journal of Chest Surgery
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• 제26권4호
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• pp.320-324
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• 1993

Congenital cystic adenomatoid malformation [CCAM] of the lung is extremely rare. The patient was 10 year old female and had no specipic signs and symptoms except right lower chest pain for 5 days ago before admission.On simple chest X-ray and thoracic CT scan, about 9x8x8cm sized, heterogenous marginal enhanced multiseparated hypodence lesion with air fluid level and gas bubbles in posterior pleural space in right lower chest .The culture result of needle aspiration of cavity was apergillus flavus. Right lower lobectomy was carried out and the result of biopsy was congenital cystic adenomatoid malformation.

• Journal of Chest Surgery
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• 제11권3호
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• pp.239-245
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• 1978

Recently, we experienced a case of rare neurilemmoma originated from intercostal nerve [9th] in the right chest wall in a 25 year old male officer. The tumor was incidentally found in the routine chest X ray, where the round well circumscribed mass tumor the ninth rib with notching and sclerotic margin, suggesting slowly growing benign benign of chest wall was revealed and the tumor mass was easily extirpated in the exploratory thoracotomy, with uneventful recovery. Grossly, the tumor was firm, partly soft and well circumscribed, measuring 4.5X3.0X 3.0 cm with yellowish smooth outer surface, attached with intercostal nerve trunk. Cut surface exhibits partly grayish white and largely hemorrhagic areas. Microscopically, the characteristic palisading arrangement of schwann cells and Verocay bodies are seen but dominant features are cystic degeneration and hemorrhage with organization and fibrosis. The sheath of intercostal nerve and capsule of neurilemmoma were con joined. There is no evidence of malignancy. The tumor was confirmed as neurilemmoma of intercostal nerve, Antony type B.

• Journal of Chest Surgery
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• 제23권3호
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• pp.561-565
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• 1990

We experienced thymolipoma which is a rare benign mediastinal tumor, an admixture of atrophic thymic tissue and matured adipose tissue. The patient was, 13 years old boy, admitted due to anterior mediastinal mass on routine chest X-ray and complained of mild exertional dyspnea. The physical examination revealed percussion dullness, decreased breathing sound at right anterior hemithorax. The chest PA and lateral views showed both paracardiac mass density and obliteration of retrosternal clear space. The chest CT Scan showed tubular structure containing of thymic tissue and enhanced fatty tissue, suggested thymolipoma. Operation was performed under the impression of thymolipoma. Through median sternotomy, the huge mass was resected. Grossly, the mass was yellowish fatty colored, measured 15X12X10cm, weighed 600gm. Light microscopic examination showed that thymic tissue containing of Hassal`s corpuscles were surrounded by matured adipose tissue, as the characteristic finding of thymolipoma. The postoperative course was uneventful.

• 한국방송∙미디어공학회:학술대회논문집
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• 한국방송공학회 2015년도 하계학술대회
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• pp.133-134
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• 2015

흉부 X-ray 영상에서 몸체 및 관심영역 분할 기법은 의료 X-ray 영상의 화질 개선 알고리즘을 더 효과적으로 적용하기 위해 전처리 단계로 영상의 물체와 배경을 분할하거나 관심영역만을 분할하는 방법이다. 보통 화질 개선 알고리즘을 적용할 때 영상의 밝기 정보나 주파수 정보를 이용하여 영상 디테일과 대비를 개선하는 방법을 사용한다. 영상 전체에 이러한 알고리즘을 적용하는 경우 불필요한 배경 정보가 포함되기 때문에 디테일과 대비가 떨어질 수 있다. 본 논문은 사용자가 보고자 하는 부분의 정보만을 사용하도록 물체를 분할하는 알고리즘을 제안한다. 1 단계로 몸체 분할 알고리즘을 이용하여 배경 성분의 정보를 제외하고 2 단계에서는 몸체의 중심인 폐와 폐사이의 장기 정보만을 볼 때의 관심영역 분할 알고리즘으로 팔이나 목, 복부의 불필요한 정보를 제외하는 방법을 제안한다.

• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2023년도 춘계학술발표대회
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• pp.681-683
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• 2023

폐암은 전 세계적으로 사망률이 가장 높은 암 질환으로, 조기 발견 및 신속한 치료를 위해서는 흉부 X-ray 영상 내 악성 결절을 놓치지 않는 것이 중요하다. 그러나 흉부 X-ray 영상은 정밀도의 한계로 진단 결과에 대한 신뢰도가 낮아, 이를 보조하는 도구의 개발이 요구된다. 기존의 폐암 진단 보조 도구는 학습 기반의 기법으로, 진단 결과에 대한 설명성(explainability)이 없다는 위험성을 갖는다. 이에 본 논문에서는 통계 분석에 기반한 결절의 석회화 여부 진단 기법을 제안한다. 제안하는 기법은 결절과 해부학적 구조물의 밝기 차 분포로부터 석회화 여부를 판단하며, 그 결과 민감도 65.22%, 특이도 88.48%, 정확도 83.41%의 성능을 보였다.

• The Korean Journal of Pain
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• 제26권1호
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• pp.51-56
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• 2013

Background: The C-arm fluoroscope is an essential tool for the intervention of pain. The aim of this study was to investigate the radiation exposure experienced by the hand and chest of pain physicians during C-arm fluoroscopy-guided procedures. Methods: This is a prospective study about radiation exposure to physicians during transforaminal epidural steroid injection (TFESI) and medial branch block (MBB). Four pain physicians were involved in this study. Data about effective dose (ED) at each physician's right hand and left side of the chest, exposure time, radiation absorbed dose (RAD), and the distance from the center of the X-ray field to the physician during X-ray scanning were collected. Results: Three hundred and fifteen cases were included for this study. Demographic data showed no significant differences among the physicians in the TFESIs and MBBs. In the TFESI group, there was a significant difference between the ED at the hand and chest in all the physicians. In physician A, B and C, the ED at the chest was more than the ED at the hand. The distance from the center of the X-ray field to physician A was more than that of the other physicians, and for the exposure time, the ED and RAD in physician A was less than that of the other physicians. In the MBB group, there was no difference in the ED at the hand and chest, except for physician D. The distance from the center of the X-ray field to physician A was more than that of the other physicians and the exposure time in physician A was less than that of the other physicians. Conclusions: In conclusion, the distance from the radiation source, position of the hand, experience and technique can correlate with the radiation dose.

• Journal of Chest Surgery
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• 제42권2호
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• pp.226-232
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• 2009

배경: 흉부 둔상은 전체 흉부 손상의 90%정도를 차지하며 외상과 관련된 사망률의 20%를 유발시킨다. 흉분 둔상에 의한 손상 후 이환율과 사망률의 주요 원인은 발견되지 못한 손상이 남아있기 때문이다. 그리하여 흉부전산화단층 촬영은 외상환자의 진단적 검사에서 매우 자주 사용되어져 왔다. 그러나 흉부 컴퓨터 촬영은 가격이 비싸고, 방사선 노출을 증가시킬 수 있다. 이번 연구를 통하여 흉부둔상 환자에서 흉부단순촬영과 비교하여 흉부전산화단층촬영을 통하여 얼마나 더 많은 정보를 얻을 수 있는지 조사해 보고 그리고 흉부 컴퓨터 촬영의 진단과 치료에 있어서의 역할을 알아보고자 한다. 대상 및 방법: 2006년 11월부터 2007년 7월까지 응급실로 내원한 환자 100명을 대상으로 하였다. 이 중 74명의 자동차 관련사고 환자와 26명의 낙상 사고 환자가 있었으며 흉부엑스선과 흉부전산화단층 촬영을 동시에 시행한 환자를 전체 응급실 환자 중에 선택하였다. 자료는 차트를 통하여 혈역학적 소견, 중재적 치료 여부, 손상의 중증도(RTS)와 종류를 조사하였으며, 초기 응급실 내원환자 중 흉부단순촬영과 흉부전산화단층촬영을 시행한 환자를 대상으로 발견되지 못한 병적 소견을 각각 질환별로 분석하였다. 결과: 100예의 환자 중 흉부엑스선 검사상 하나 이상의 병적소견을 보인 환자가 79예였으며 21예의 환자에서는 흉부엑스선 검사상 정상 소견을 보였으며, 이 21예의 환자 중 17예에서 흉부전산화단층촬영상 이상소견이 발견되었다. 흉부엑스선 검사상 발견하지 못한 소견으로는 기흉, 혈흉, 폐좌상, 흉골 골절 등이 있었으며 이러한 병적 소견의 진단은 흉부전산화단층촬영이 흉부엑스선 검사보다 통계적으로 유의하게 우수한 것으로 나타났다. 하지만 치료에 있어서는 흉부전산화촬영 시행 후 발견된 병변으로 흉관삽입술등의 치료를 시행한 환자는 31명에 불과했고 흉관삽입술, 개흉술 등의 흉부외과적인 치료 없이 집중관찰을 위하여 입원한 환자가 42명이었으며, 흉부엑스선촬영과 환자의 이학적 소견으로 진단되어 치료를 시행한 환자가 27명이었다. 결론: 흉부전산화단층촬영은 진단에 있어서 흉부엑스선 촬영보다 통계적으로 의미 있게 진단에 도움이 되는 것을 알 수 있었으나 발견되지 못한 병변이 증가할지라도 치료의 변화와 방법의 변화가 있는 경우는 매우 소수에 불과했다. 그리하여 응급실에서의 흉부전산화단층촬영의 오남용을 막기 위하여 선별적인 흉부전산화단층 촬영을 고려해야 할 것이다.

• Journal of Chest Surgery
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• 제22권2호
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• pp.321-324
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• 1989

The Swyer-James syndrome is rare abnormality that may be encountered on routine chest X * ray examination and frequently presents a diagnostic problem. Recently, we experienced a case of Swyer-James syndrome which was accompanied with ipsilateral uncontrolled pneumothorax. We performed exploratory thoracotomy because of failure of re-expansion of the lung. Right pneumonectomy was performed and postoperative course was uneventful.