• Title/Summary/Keyword: Multiple Defect

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Mandibular Reconstruction using Simulation Surgery after Segmental Mandibulectomy

  • Hwang, Jong-Hyun;Kim, Ji-Wan;Ahn, Kang-Min
    • Journal of International Society for Simulation Surgery
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    • 제3권1호
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    • pp.12-15
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    • 2016
  • Functional and esthetic reconstruction after segmental mandibulectomy is one of the most challenging surgeries in microsurgical reconstruction field. Simulation surgery before free flap reconstruction has been performed for efficient surgery and successful results. Fibula free flap is the flap of the choice for reconstruction of the segmental mandibular defect. Straight nature of the fibula bone requires multiple segmentations to fit into mandible. 3D rapid prototype (RP) model gives a lot of information for mandibular reconstruction. The purpose of this study was to report mandibular reconstruction with free fibular flap using simulation surgery. A total of 30 consecutive patients were included for functional and esthetic evaluation. Among 30 patients, two flaps showed necrosis after radiotherapy. The other flaps were all survived and showed successful reconstruction in both function and esthetics.

다중의 초점면 영상을 통한 구면 렌즈의 이물 검사 (Defect Inspection of Globular Lens Using Multiple Focal Plane Images)

  • 박종원;장진우;정호영;최경주
    • 한국정보처리학회:학술대회논문집
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    • 한국정보처리학회 2014년도 추계학술발표대회
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    • pp.1014-1017
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    • 2014
  • 모바일 카메라 모듈의 성능 향상에 따라, 카메라 렌즈의 미세한 오염도 큰 불량요인으로 작용하게 되었다. 그로인한 새로운 검사 시스템들과 검사방법이 제안되었다. 본 논문에서 제안하는 새로운 검사방식은 영상처리를 통해 기존에 비해 정확도가 높고, 전처리 횟수가 적은 이점이 있어 산업현장에서 적용 시 효율성 증대를 기대할 수 있다.

Ileocecocolic and Colocolic Intussusception in a Young Jindo

  • Jung, Joo-Hyun;Chae, Woong-Joo;Kwon, Do-Hyoung;Chang, Jin-Hwa;Oh, Sun-Kyoung;Yoon, Jung-Hee;Choi, Min-Cheol
    • 한국임상수의학회지
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    • 제25권6호
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    • pp.549-552
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    • 2008
  • An eight-month-old, intact female Jindo, weighing 9 kg with a one-day history of acute bloody diarrhea was referred. Plain abdominal radiographic findings included evidence of a soft tissue tubular mass within the dilated colon. In ultrasonographs, a target-like mass was identified with multiple hyperechoic and hypoechoic parallel wall layers. A barium enema showed a large radiolucent filling defect within the colon and a completely occlusive lumen. On the basis of these images, ileocecocolic and colocolic intussusception was diagnosed. Surgical manual reduction, resection and anastomosis were performed. The patient recovered normally without any complications or recurrence.

A Study on the Fault Process and Equipment Analysis of Plastic Ball Grid Array Manufacturing Using Data-Mining Techniques

  • Sim, Hyun Sik
    • Journal of Information Processing Systems
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    • 제16권6호
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    • pp.1271-1280
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    • 2020
  • The yield and quality of a micromanufacturing process are important management factors. In real-world situations, it is difficult to achieve a high yield from a manufacturing process because the products are produced through multiple nanoscale manufacturing processes. Therefore, it is necessary to identify the processes and equipment that lead to low yields. This paper proposes an analytical method to identify the processes and equipment that cause a defect in the plastic ball grid array (PBGA) during the manufacturing process using logistic regression and stepwise variable selection. The proposed method was tested with the lot trace records of a real work site. The records included the sequence of equipment that the lot had passed through and the number of faults of each type in the lot. We demonstrated that the test results reflect the real situation in a PBGA manufacturing process, and the major equipment parameters were then controlled to confirm the improvement in yield; the yield improved by approximately 20%.

Case report of cerebral creatine deficiency syndrome with novel mutation of SLC6A8 gene in a male child in Bangladesh

  • Rahman, Muhammad Mizanur;Fatema, Kanij
    • Journal of Genetic Medicine
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    • 제18권1호
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    • pp.44-47
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    • 2021
  • Cerebral creatine deficiency syndrome (CCDS) is a disorder where a defect is present in transport of creatine in the brain. Creatine plays an essential role in the energy metabolism of the brain. This is a genetic disorder, autosomal recessive or X linked, characterized by intellectual disability, speech and language delay, epilepsy, hypotonia, etc. Until recently very few number of cases have been reported. Here we report a case of 1.5-year-old boy who had epilepsy (epileptic spasm and generalized tonic clonic seizure), intellectual disability, microcephaly, hypotonia and speech delay. His magnetic resonance imaging of brain showed cortical atrophy and electroencephalography showed burst suppression pattern. The diagnosis was confirmed by clinical exome sequencing which showed novel mutation of SLC6A8+ in exon 9, suggestive of X linked recessive CCDS. The patient was then treated with glycine, L-arginine and creatine monohydrate with multiple antiepileptic drugs.

동결융해 환경에 노출된 타일 모듈의 부착강도 특성 (Adhesion Strength Properties of Tile Modules Exposed to Freeze-Thaw Environment)

  • 편수정;김규용;최병철;김문규;유하민;남정수
    • 한국건축시공학회:학술대회논문집
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    • 한국건축시공학회 2023년도 봄 학술논문 발표대회
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    • pp.217-218
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    • 2023
  • In modern architecture, tiles are used as a decorative material to enhance the appearance of buildings. However, defects occurring during tile installation affect not only the appearance of the building, but also its maintenance. This study aims to investigate stable tile installation by producing tile modules using the floating mortar method and conducting freeze-thaw tests to measure their adhesion strength. Test results showed that the adhesion strength increased as the mesh size decreased, except for S3 mesh. This study highlights the importance of research on tile installation to solve problems related to building appearance and maintenance.

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Reconstruction of Large Facial Defects via Excision of Skin Cancer Using Two or More Regional Flaps

  • Lee, Dong Min;Bae, Yong Chan;Nam, Su Bong;Bae, Seong Hwan;Choi, June Seok
    • Archives of Plastic Surgery
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    • 제44권4호
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    • pp.319-323
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    • 2017
  • Background Free-flap surgery and skin grafting can be used to reconstruct large facial defects that may result after skin cancer removal by Mohs micrographic surgery (MMS). However, these two methods may produce low postsurgical patient satisfaction with aesthetics, and free-flap surgery may produce an undue burden for the majority of skin cancer patients, who are of advanced age. Hence, the authors examined outcomes of large facial defect reconstruction using multiple flaps. Methods Among patients undergoing MMS for skin cancer at Pusan National University Hospital between January 2013 and December 2015, we evaluated 7 patients (2 males, 5 females; average age, 73.14 years) treated for large facial defects from basal cell carcinoma. Based on operative and follow-up records, we investigated the number and type of flaps used, postsurgical complications, and patients' post-surgical satisfaction. Results Two and 3 types of flaps were used for 5 and 2 patients, respectively. Most frequently used were nasolabial flaps (7 times in 6 patients) and forehead flaps (once in each of 4 patients). The average follow-up period was 14 months, with no complications-including necrosis, hematoma, or wound dehiscence-observed. Post-surgical satisfaction averaged 4.4 out of a maximum of 5 points. Conclusions Reconstruction using two or more flaps for large facial defects after skin cancer removal using MMS produced satisfactory outcomes while preventing aesthetic problems. Practitioners should consider using multiple flaps when choosing a reconstruction method for large facial defects following skin cancer removal.

H.264/AVC에서의 효율적인 고속 다중 참조 프레임 선택 기법 (Efficient Fast Multiple Reference Frame Selection Technique for H.264/AVC)

  • 이현우;유종민;정제창
    • 한국통신학회논문지
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    • 제33권10C호
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    • pp.820-828
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    • 2008
  • H.264/AVC 동영상 부호화 표준은 높은 부호화 효율을 위해서 가변 블록 크기 부호화, 1/4 화소 정확도의 움직임 예측, 다중 참조 프레임 사용, 율-왜곡 최적화 등과 같은 기법을 도입하였다. 그러나 이러한 부호화 방법들은 움직임 예측에 필요한 복잡도를 크게 증가시키는 단점이 있다. 특히 다중 참조 프레임 움직임 예측을 수행함으로써 증가되는 계산량은 탐색되는 참조 프레임의 개수에 따라 선형적으로 비례하여 늘어난다. 따라서 본 논문에서는 다중 참조 프레임 움직임 예측에서 탐색되는 참조 프레임의 개수를 효율적으로 조절함으로써 복잡도를 크게 줄일 수 있는 방법을 제안한다. 제안하는 알고리듬은 인터 $16{\times}16$ 모드와 인접 블록의 최적 참조 프레임 정보를 이용하여 나머지 화면간 모드들에서의 불필요한 탐색 과정을 생략한다. 실험 결과는 제안하는 방법을 적용함으로써 영상의 화질과 비트율의 큰 변화 없이 부호화 행 시간을 평균 58.54% 정도의 큰 폭으로 감소시킴을 보인다. 또한 이 방법은 다른 고속 움직임 예측 알고리듬을 같이 적용함으로써 추가적인 성능 향상을 얻을 수 있는 확장성을 가진다.

다중 가상 검지선을 이용한 실시간 교통정보 수집 (Real-Time Traffic Information Collection Using Multiple Virtual Detection Lines)

  • 김의철;김수형;이귀상;양형정
    • 정보처리학회논문지B
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    • 제15B권6호
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    • pp.543-552
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    • 2008
  • ATIS(Advanced Traveler Information System)는 교통 상황이나 주행 정보 등을 실시간으로 제공하여 이용자의 편익을 도모하는 시스템이다. ATIS를 위해 영상 이미지를 분석하여 교통정보를 수집 수집하는 방식은 크게 영역에 루프 검지기를 설정하여 측정하는 방식과, 영상 분석을 통해 차량을 검출하고 추적하는 방식으로 나뉜다. 본 연구에서는 차선마다 가상 검지기를 설치하는 방식을 기초로, 영상 분석 방법의 차량 위치 추적 방식을 응용하여 교통정보를 측정하는 시스템을 제안한다. 이때 가상 검지기 방식의 단점을 보완하기 위해 차선마다 다중의 가상 검지선을 설정하여, 검지 영역 내에 여러 대의 차량이 진입하거나 차량의 차선 변경 시에도 효과적으로 교통정보를 추출할 수 있게 하였고, 영상분석 방식의 문제점인 검지영역의 크기 증가에 따른 차량 추출 시간의 증가를 해결하기 위해 검지 영역 내에서 대표 픽셀을 추출하여 교통정보를 측정하였다. CCTV를 이용하여 취득한 영상에 제안하는 시스템을 이용하여 차량의 평균 속도와 차선별 교통량 측정한 결과 실제 교통량대비 평균 92.32%의 차량 검지율를 보였다.

대동맥판막, 승모판막, 삼첨판막과 심실중격을 침범한 심내막염 -1예 보고- (Infective Endocarditis Involving Aortic Valve, Mitral Valve, Tricuspid Valve, and luterventricular Septum -A Case Report)

  • 박종빈;서동만
    • Journal of Chest Surgery
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    • 제30권2호
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    • pp.200-204
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    • 1997
  • 본 증례는 고유 대동맥 판막, 승모판막, 삼첨판막과 심실중격을 침 범한 심내막염환자의 성공적 치료에 대한 보고이다. 환자는 11세때 심실중격결손폐쇄와 대동맥판막성형술을 받은 16세 남아로서 심내막염으로 항생제치료에도 불구하고 난치성 심부전을 보였다. 수술소견상 이전 수술시 폐쇄한 심실중격폐쇄를 따라 커다란 결손을 보였으며 다발성 천공과 우종을 동반한 대동맥 판막역류, 우종을 동반한 승모판 역류, 대동맥 판륜주위농양, 심실중격의 심근농양, 천공과 우종을 동반한 삼첨 판역류 소견을 보였다. 수술은 모든 감염조직과 괴사조직을 근치적절제후 심실중격결손을 Dacron patch로 폐쇄하면서 대동맥판막륜부위까지 확장보강하였으며, 대동맥판막치환시 확장보강한 Patch에 인공판막을 거치시켜 안전하게 치환할 수 있었다. 승모판막은 치환하였고, 삼첨 판은 자가심낭편으로 재건하였다. 환자는 수술후 6주간 항생제치료후 다른 합병증 없이 건강한 상태로 퇴원하였다.

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