• 센서학회지
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• 제17권6호
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• pp.447-453
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• 2008

Respiration rate is one of the important vital signs. Photo-plethysmography (PPG) measurement especially on a finger has been widely used in pulse oximetry and also used in estimating respiration rate. It is well known that PPG contains respiration-induced intensity variation (RIIV) signal. However, the accuracy of finger PPG method has been controversial. We introduced a new technique of enhancing motion artifact by respiration. This was achieved simply by measuring PPG on the thorax. We examined the accuracy of these two PPG methods by comparing with two existing methods based on thoracic volume and nostril temperature changes. PPG sensing on finger tip, which is the most common site of measurement, produced 6.1 % error. On the other hand, our method of PPG sensing on the thorax achieved 0.4 % error which was a significant improvement. Finger PPG is sensitive to motion artifact and it is difficult to recover fully small respiratory signal buried in waveform dominated by absorption due to blood volume changes. Thorax PPG is poor to represent blood volumes changes since it contains substantial motion artifact due to respiration. Ironically, this inferior quality ensures higher accuracy in terms of respiration measurement. Extreme low-cost and small-sized LED/silicon detector and non-constrained reflection measurement provide a great candidate for respiration estimation in ubiquitous or personal health monitoring.

• 자동차안전학회지
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• 제6권2호
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• pp.12-17
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• 2014

The number of vehicle accidents related to the side impact has increased since 1990 in Korea, thus the side impact test has been performed as one of the major vehicle evaluations of the Korean New Car Assessment Program(KNCAP) in 2003. A total of 77 vehicles of eight different types(compact, small, semi-midsize, midsize, and large sedans and small, midsize, and large sports utility vehicles) were tested in side impact and side pole impact conditions. In this study, the head and thorax injury values(HICs and chest deflections) of the side impact tests performed between 2003 and 2013 were investigated in terms of vehicle type, test year, and test condition. The recent vehicles showed better safety performances(lower injury values) and similar injury patterns were obtained between side impact and pole side impact tests.

• 대한방사선치료학회지
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• 제26권1호
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• pp.83-89
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• 2014

목 적 : 토모테라피(Tomotherapy)와 선형가속기(Linac)를 이용한 세기조절방사선치료(IMRT) 시 환자의 정확한 위치잡이를 위해 매일 시행되는 MVCT와 CBCT의 imaging dose를 비교 평가해보고자 한다. 대상 및 방법 : 인체 모형 팬텀(Anderson rando Phantom, USA)을 Head, Thorax, pelvis의 3부위로 분류하여 촬영 부위의 중심에 $0.5{\times}0.5cm2$. 크기로 자른 GafChromic EBT3 film을 팬텀의 표면의 상, 하, 좌, 우와 팬텀의 표면에서 2cm깊이의 상, 하, 좌, 우, 중심에 위치시킨 뒤 토모테라피(Hi Art)와 Novalis Tx의 OBI를 이용하여 surface dose와 inner dose를 각각 3회씩 반복 측정한다. 측정 된 film은 RIP version6.0을 이용하여 값을 산출한 뒤 일원분산분석법을 이용하여 선량의 평균값을 산출한다. 결 과 : 인체모형팬텀을 이용하여 MVCT와 CBCT를 시행한 결과 MVCT inner dose의 측정값은 head에서 $15.43cGy{\pm}6.05$, thorax에서 $16.62cGy{\pm}3.08$, pelvis에서 $16.81cGy{\pm}5.24$로 나타났으며, CBCT inner dose는 head에서 $13.28{\pm}3.68$, thorax에서 $13.66{\pm}4.04$, pelvis에서 $15.52{\pm}3.52$의 값을 나타냈다. Surface dose의 측정 값은 MVCT 시행 시 head에서 $11.64{\pm}4.05$, thorax에서 $12.16{\pm}4.38$, pelvis에서 $12.05{\pm}2.71$로 나타났으며, CBCT의 경우 head에서 $14.59{\pm}3.51$, thorax에서 $15.82{\pm}2.89$, pelvis에서 $17.48{\pm}2.80$을 나타내었다. 결 론 : Inner dose의 경우 kV energy를 사용하는 CBCT보다 MV energy를 사용하는 MVCT에서 head에서 1.16배, thorax에서 1.22배, pelvis에 서 1.08배 높게 나타났으며, Surface dose의 경우 MVCT보다는 CBCT의 head에서 1.25배, thorax에서 1.30배, pelvis에서 1.45배 높게 측정되었다. Imaging dose는 치료 선량에 비해 작은 양이지만 daily로 시행되는 만큼 정상조직에 일정부분 영향을 미칠 것으로 생각된다. 하지만 IMRT치료를 위해서는 영상유도를 통한 IGRT가 반드시 병행되어 치료계획과 실제치료간 오차를 최소화하여야 한다. 따라서 환자가 받는 imaging dose를 최소화하기 위해서는 치료계획 시 Imaging dose를 고려하여 치료계획을 수립하거나 MVCT 촬영 시 Scan 범위를 최소화하여 시행해야 될 것으로 사료된다.

• Journal of Trauma and Injury
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• 제36권3호
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• pp.258-260
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• 2023

Traumatic rupture of the right hemidiaphragm occurred following a high-velocity motor vehicle collision in the case presented herein. The resulting herniation of small bowel loops into the thorax resulted in hemodynamic and respiratory compromise due to pressure effects on the right heart and major vessels. The patient's hemodynamic status improved with reduction of enterothorax, and the diaphragmatic defect was repaired. We discuss the available literature and learning points from this rare case.

• Neonatal Medicine
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• 제15권1호
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• pp.84-88
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• 2008

저자들은 짧은 목과 짧은 흉곽, 경추에서 흉추에 걸쳐 척추열, 척추분절, 척추반측이상, 척추부재 등의 척추기형과 짧은 늑골, 늑골 융합과 늑골의 부재 등의 늑골기형과 함께 우측 신장이 좌측 신장에 융합된 신장기형을 동반한 Jarcho-Levin 증후군 1례를 경험하였기에 문헌 고찰과 함께 보고하는 바이다.

• Journal of Chest Surgery
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• 제19권2호
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• pp.331-334
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• 1986

Bochdalek hernia in adult is relatively uncommon. We experienced a surgical case of Bochdalek hernia in a 29 year old housewife. She was admitted via E-R due to left chest pain and nausea for 1 months. 5 days before admission, she had Cesarean section on private hospital. After delivery, nausea and exertional dyspnea were aggravated. On admission, chest PA showed herniated stomach, colon, small intestine on left thorax. She was diagnosed of diaphragmatic hernia and operated. Operative findings were as follows: 1. hypoplastic: lower lobe of left lung, 2. stomach, colon, small intestine, spleen were herniated, 3. the defect was located on posterolateral portion of diaphragm, measuring 10 x 8 cm in size. Herniated intestines were reduced and diaphragmatic defect was repaired as interrupted sutures with 2-0 Mersilene. Postoperative courses were uneventful and the patient was discharged on POD 10th.

• Journal of Chest Surgery
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• 제10권1호
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• pp.44-48
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• 1977

Benign hyperplasia of hilar lymph glands is rare. Most of the lesions were intrathoracic cavity. The lesions were discovered most often on routine roentgenograms of the chest or because. of pressure symptoms or the presence of a palpable mass if outside the thorax. Diagnosis is. made after removal of gland, a procedure which may also have therapeutic value. They have been divided into 2 histol0gic types: the hyaline-vascular lesions, which were, most numerous, were characterized by small hyaline-vascular follicles and interfollicular capillary proliferation ;the plasma cell lesions were characterized by large follicles with! intervening sheets of plasma cells. We experienced one case of benign hyperplasia of lymph gland in left hilum, which were. most numerous, characterized by small hyaline-vascular follicles and interfollicular capillary proliferation-hyaline-vascular type. This 29 years old male patient was treated by right upper lobectomy with excision of lesion. The postoperative courses was uneventful.

• 한국임상수의학회지
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• 제9권2호
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• pp.473-481
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• 1992

To elucidate the applicability of the wide latitude X-ray film for radiographic diagnosis and treatment of diseases in small animals, the quality of the wide latitude film was compared with that of the standard latitude film which is commonly used in veterinary clinic. The images of head, neck, thorax, abdomen, extremities and joints were radiographed with the wide latitude and standard latitude film in fourteen dogs. In soft tissues such as abdominal organs, lung, skin, mammary glands, the clearer and higher contrast of the image was observed on the wide latitude film. And these advantages were more apparent in pneumoeritoneography. Therefore. it can be suggested that the wide latitude film is practically useful for the evaluation of the images of soft tissues, and also can be used on hard tissue radiography with the same quality as the standard latitude film.

• 한국임상수의학회지
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• 제19권3호
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• pp.337-341
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• 2002

In 2001, eight small-sized dogs and three medium-sized dogs with or without clinical signs such as vomiting, dyspnea and enlargement of superficial lymph nodes were diagnosed as lymphoma by radiography, ultrasonography and cytology. Among them, six were female mainly over 7 years old and others were male around 4 years old. There were six cases of multicentric form lymphoma, three cases of mediastinal form, an alimentary and an extranodal form, respectively. Radiographic findings were enlarged cranial mediastinal lymph node, sternal lymph node, and tracheobronchial lymph nodes on thorax and hepatomegaly, splenomegaly, and enlarged sublumbar lymph nodes on abdomen. Ultrasonographic findings revealed enlarged abdominal lymph nodes and multifocal hypoechoic lesions on the liver. Especially, severe wall thickness of small bowel was observed in a dog with alimentary lymphoma. Three dogs were dead during chemotherapy, and three dogs were dead without any treatment. Three dogs did not return and two treated dog showed normal status. Radiography and ultrasonography, although not giving an final diagnosis for lymphoma, are useful for assessment and diagnosis of lymphoma.

• 한국콘텐츠학회논문지
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• 제13권10호
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• pp.523-532
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• 2013

Fat shot은 골프에서 공보다 뒤땅을 먼저 치게 되는 샷의 공식 용어이다. 본 연구에서는 fat shot과 정상적인 샷의 동작을 비교 분석하였다. K 대학교 교원 5명을 연구대상자로 선정하였으며, 개인별 fat shot이 최소 5개 체크될 때까지, 샷을 계속하게 하였다. AD, MBS, TBS, MDS, IMP, MF를 분석 시점으로 설정하였고, 구간 소요시간, 지면반력 패턴, 백스윙 크기, 팔꿈치 각도, 코킹 각도, 골반과 몸통의 회전, 골반 선속도 각속도 등을 분석하였다. 변인별 차이를 확인하기 위해 대응표본 검증을 실시하였다. Fat shot의 주요 원인으로 간주되는 다운스윙에서의 빠른 코킹 풀림, 다운스윙 초기의 오른 팔꿈치 신전, 뒷발에 체중을 실은 채로 하는 스윙 등의 형태는 나타나지 않았다. 백스윙 크기와 X-Factor 크기, 골반과 몸통의 회전각도, 골반의 회전각속도에서도 두 샷 간 차이가 나지 않았다. 그러나 정상적인 샷에 비해 Fat shot은 다운스윙 초반이 아닌, 후반부 임팩트 바로 직전의 다소 급격한 체중 이동 형태와 다운스윙 과정 중 골반의 타겟 방향으로의 급격한 가 감속, 그리고 골반의 수직 상방으로의 다소 작고 늦은 타이밍의 움직임 속도패턴을 나타내었다.