• Asian Pacific Journal of Cancer Prevention
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• 제15권11호
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• pp.4535-4538
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• 2014

Objective: To explore the value of porous titanium alloy plates for chest wall reconstruction after resection of chest wall tumors. Materials and Methods: A total of 8 patients with chest wall tumors admitted in our hospital from Jan. 2006 to Jan. 2009 were selected and underwent tumor resection, then chest wall repair and reconstruction with porous titanium alloy plates for massive chest wall defects. Results: All patients completed surgery successfully with tumor resection-induced chest wall defects being $6.5{\times}7cm{\sim}12{\times}15.5$ cm in size. Two weeks after chest wall reconstruction, only 1 patient had subcutaneous fluidify which healed itself after pressure bandaging following fluid drainage. Postoperative pathological reports showed 2 patients with costicartilage tumors, 1 with squamous cell carcinoma of lung, 1 with lung adeno-carcinoma, 1 with malignant lymphoma of chest wall, 2 with chest wall metastasis of breast cancers and 1 with chest wall neurofibrosarcoma. All patients had more than 2~5 years of follow-up, during which time 1 patient with breast cancer had surgical treatment due to local recurrence after 7 months and none had chest wall reconstruction associated complications. The mean survival time of patients with malignant tumors was ($37.3{\pm}5.67$) months. Conclusions: Porous titanium alloy plates are safe and effective in the chest wall reconstruction after resection of chest tumors.

• Journal of Chest Surgery
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• 제28권7호
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• pp.721-725
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• 1995

One case of surgical correction of a large aortopulmonary window in a 4 months old female is reported in detail. Clinical symptoms consisted of fatigue when feeding and recurrent upper respiratory tract infection. Under cardiopulmonary bypass with moderate hypothermia and cardioplegic arrest of the heart, the aortopulmonary window was approached through a vertical incision at the anterior wall of window itself. The defect was closed with pericardial patch using continuous suture posteriorly and sandwitch technique anteriorly. The patient was weaned from the cardiopulmoanry bypas without hemodynamic problem and postoperative course was uneventful. This surgical technique is recommandable as it provides good exposure of the defect and can be performed easily and safely.

• Journal of Chest Surgery
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• 제28권7호
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• pp.713-716
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• 1995

A 75-year-old man was admitted to the hospital because of a pericardial effusion.After 3 L of blood-stained pericardial fluid was drained, clinical examination together with echocardiography and chest computed tomography showed a tumor in the right atrium. At operation a pedunculated vascular tumor was found with a broad base which was embedded in the atrial wall and extended into the pericardium.A wide resection was performed resulting in a large defect of the right atrial wall. The defect was reconstructed with a pericardial patch. The patient did well postoperatively, but bloody pleural effusion developed later, presumably because of pulmonary metastasis. The patient died 2 months after surgery as a result of respiratory failure.

• 대한두개안면성형외과학회지
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• 제14권1호
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• pp.30-35
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• 2013

Background: For reconstruction of the mild to moderate medial orbital wall fractures, various surgical approaches have been used. Prior existing W-shaped incision was a direct local approach through a 3 cm incision on the superior medial orbital area with a titanium mesh implant. In this study, the authors modified W-shaped incision and reconstructed the defect with silastic sheet to improve the result and the postoperative scar. Methods: This study included 20 patients who had mild to moderate size of medial wall defect and therefore relatively suitable for reconstruction with silastic sheets from July, 2009 to December, 2011. A modified W-shaped skin incision approximately 1.2 to 1.5 cm in length was made along the superior medial orbital rim from approximately 1 cm medial to the medial canthus to the lower border of the medial eyebrow. The angles of the limbs of the W ranged from 150 to 160 degrees. Results: By using soft flexible silastic sheet, the authors reduced the incision from 3 to 1.5 cm, and by widening the angle of the W limbs, scars were more effectively hided in the relaxed skin tension line. Scar assessment was done with modified patient and observer scar assessment scale and mean score from patients was 2.08 and mean score from observers was 2.12. Conclusion: Although this method will not be suitable for every case, it can be a consistent method to obtain the surgical goal in treatment of mild to moderate blowout fractures of the medial orbital wall.

• 핵의학기술
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• 제18권2호
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• pp.28-32
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• 2014

심근 관류 SPECT 검사 중 환자의 움직임은 관류 결손과 인공물을 발생시켜 정확한 진단에 영향을 줄 수 있는 인자이다. 움직임으로 왜곡된 데이터를 보정하는 방법으로 움직임 보정방법이 개발되었고 각 방법마다 사용된 알고리즘이 다르기에 상황에 비교하고자 한다. 실험에 사용된 장비는 GE Ventri Gamma Camera와 Anthropomorphic Torso Phantom을 이용하였다. 팬텀을 환자 조건과 동일하게 하기 위하여 심근에 74 kBq/mL, 연부조직 1.1 kBq/mL, 폐 2.6 kBq/mL, 간 9.6 kBq/mL의 Tl-201을 주입하여 제작하고, 움직이는 상황에서 결손의 변화 관찰 목적으로 심근의 Anterior wall에 임의로 결손을 삽입하였다. 움직이지 않는 정상군과 일정간격(2 cm, 3 pixel) 상하 1회 이동, 상하 반복 이동, 좌우 1회 이동, 좌우 반복 이동한 데이터에 나누어 영상 획득하고 MDC, Hopkins, Stasis 방법을 적용하여 Polar map과 정량분석 Score로 비교 하였다. 환자와 동일한 조건으로 회전각 $6^{\circ}$, 50sec/frame으로 영상 획득하고, OSEM (2 iterations, 10 subsets), Butterworth filter (order 10; cutoff frequency; 0.32 cycle per pixel)를 적용, scatter correction, 감쇠보정은 적용하지 않았다. 팬텀 실험에서 세 가지 방법들에서 MDC 방법이 Visual 인공물 없이 잘 보정하였으나, 환자의 데이터에 이를 적용 하였을 때, 환자마다 움직임 보정방법 적용 결과들이 일정하지 않았다. 이는, 환자의 움직임이 일정하지 않고, 장기내의 동위원소의 비율도 다르기에 발생한다고 생각되며 추가적인 연구와 상황에 맞는 움직임 보정방법의 유동적인 사용이 필요하다고 사료된다.

• 비파괴검사학회지
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• 제32권1호
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• pp.56-63
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• 2012

본 연구에서는 가공된 오스테나이트계 STS 316L ASME 표준 교정시험편을 이용하여 튜브 두께 감소율과 잔존두께에 대한 와전류 신호와 IRIS 신호특성을 비교하여 리보일러 튜브의 현장 적용성을 평가하였다. 그 결과 두께감소율의 경우 와전류탐상검사는 $20%{\times}4$ 평저공, 10% 외면 그루브, IRIS는 80%홈, 10%외면 그루브에서 ${\pm}15%$ 이상의 편차가 발생하였다. 잔존두께의 경우 와전류탐상은 측정치가 모두 허용범위를 만족하였으나, IRIS는 80% 인공홈에서 ${\pm}15%$ 이상의 편차가 발생하였다. 따라서 와전류탐상검사 후 의사지시에 대한 해석, 두께감소율 측정을 위해 IRIS를 수행한다면 신뢰성이 향상될 것으로 판단된다.

• Journal of Chest Surgery
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• 제16권1호
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• pp.176-182
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• 1983

Malignant lymphoma in chest wall is a rare form of extranodal variety as occasionally localized tumor. The primary site is suggested from rib or soft tissue, but the incidence in rib is higher than soft tissue. The patient, a male, aged 32, noted a swelling and pain over the left lower posterior chest from 3 months prior to admission. Roentgenograms revealed bony destruction in left 9, & 19th ribs posteriorly and associated chest wall mass which was ill defined uncleared margination. Under diagnosis of malignant tumor, the operation was performed and the tumor mass resected widely with en bloc technique than the fascia lata was grafted at chest wall defect. The histology of specimen was disclosed as malignant lymphoma, non-Hodgkin`s diffuse lymphocytic poorly differentiated form. The radio-and chemotherapy were combined post-operatively and the complete remission is acquired.

• Structural Engineering and Mechanics
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• 제90권6호
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• pp.591-600
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• 2024

This study investigated the acceleration response and shape change characteristics of a gravity quay wall according to the magnitude of the applied acceleration. The quay wall was defined as a port facility damaged by the Kobe earthquake. Four experimental scenarios were established based on the inclination condition grades, considered to be a significant defect factor in the quay wall. Then, the shaking table test was conducted using scaled-down quay wall models constructed per each scenario. The ground acceleration was gradually increased from the peak ground acceleration (PGA) of 0.1 g to 0.7 g. After each ground acceleration test, acceleration installed on the wall and backfill ground and inclination on the top of the wall were measured to assess the amplification of peak response acceleration and maximum response amplitude and the change in the inclination of the quay wall. This study also analyzed the separation of the quay wall from the backfill and the crack pattern of the backfill ground according to PGA values and inclination condition grades. The result of this study shows that response acceleration could provide a reasonable prediction for the changes in the inclination of the quay wall and the crack generation and propagation on the backfill from a current inclination condition grade.

• Journal of Chest Surgery
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• 제7권1호
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• pp.61-66
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• 1974

Primary tumors of the chest wall are rare than those of other portions of the body. Soft tissue tumors of the chest wall, though these are benign or malignant, should not be paid special attentions about their management than other soft tissue tumors of the body. Thoracic skeletal tumors, however, have some problems in the treatment because of defect in chest wall leading to herniation of lung and paradoxical movement of thoracic cage. The authors experienced 10 case of primary chest wall tumors at the department of thoracic and cardiovascular surgery, the national medical center, during last 15 years. Five of 10 cases were soft tissue tumors, and they were 2 case of lipoma and each one case of myxosarcoma and leiomyosarcoma. Among 5 bone tumors there no cases of sternal tumor, and their histopathological diagnosis were each one of fibrous dysplasia, giant cell tumor, osteochondroma, Ewing`s sarcoma and osteogenic sarcoma. Wide excision, though it was palliative one in certain case, was performed in 9 cases and only diagnostic incisional biopsy in one case, There were no postoperative deaths during admission to the hospital and all cases were missed during short term follow up after discharge from the hospital.

• Archives of Plastic Surgery
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• 제49권1호
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• pp.25-28
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• 2022

The authors performed rigid reconstruction using the sandwich technique for full-thickness chest wall defects by using two layers of acellular dermal matrix and bone cement. We assessed six patients who underwent chest wall reconstruction. Reconstruction was performed by sandwiching bone cement between two layers of acellular dermal matrix. In all patients, there was no defect of the overlying soft tissue, and primary closure was performed for external wounds. The average follow-up period was 4 years (range, 2-8 years). No major complications were noted. The sandwich technique can serve as an efficient and safe option for chest wall reconstruction.