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Multiple Dissecting Aneurysms of the PICA Trunk - Case Report - (다발성 후하소뇌동맥 해리성 동맥류 - 증 례 보 고 -)

  • Kim, Jong Tae;Kim, Han Kyu
    • Journal of Korean Neurosurgical Society
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    • v.30 no.1
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    • pp.66-72
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    • 2001
  • Apatient with multiple dissecting aneurysms of a posterior inferior cerebellar artery trunk who presented with SAH is reported. A 58-year-old woman presented with sudden occipital headache, dizziness and vomiting. The intial vertebral angiography revealed a suspicious pearl and string sign at the proximal posterior inferior cerebellar artery(PICA) segment. After 2 weeks, follow up angiography showed a progression of the proximal PICA dissection and newly developed dissecting aneurysm of the distal PICA segment. A far lateral suboccipital transcondylar appoach confirmed two dissecting aneurysms at distant sites of the PICA trunk. The dissection segments were wrapped with muslin wrap, which preserved the flow through the PICA and brain stem perforators. The angiographys at 3 weeks and 6 months after operation revealed serial disappearance of the dissecting aneurysms which is distal to proximal. The diagnosis, course and treatment of the dissecting aneurysms of the PICA are discussed with literature review.

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Preprocessing based Scheduling for Multi-Site Constraint Resources (전처리 방식의 복수지역 제약공정 스케줄링)

  • Hong, Min-Sun;Rim, Suk-Chul;Noh, Seung-J.
    • Journal of the Korean Operations Research and Management Science Society
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    • v.33 no.1
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    • pp.117-129
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    • 2008
  • Make-to-order manufacturers with multiple plants at multiple sites need to have the ability to quickly determine which plant will produce which customer order to meet the due date and minimize the transportation cost from the plants to the customer. Balancing the work loads and minimizing setups and make-span are also of great concern. Solving such scheduling problems usually takes a long time. We propose a new approach, which we call 'preprocessing', for resolving such complex problems. In preprocessing scheme, a 'good' a priori schedule is prepared and maintained using unconfirmed order information. Upon the confirmation of orders. the preprocessed schedule is quickly modified to obtain the final schedule. We present a preprocessing solution algorithm for multi-site constraint scheduling problem (MSCSP) using genetic algorithm; and conduct computational experiments to evaluate the performance of the algorithm.

A Case of Multiple Head and Neck Metastases of Renal Cell Carcinoma (두경부에 다중전이된 신세포암 1례)

  • Koh, Joong-Wha;Shin, Jee-Churl;Park, Seung-Koo
    • Korean Journal of Bronchoesophagology
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    • v.5 no.2
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    • pp.212-216
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    • 1999
  • Renal cell carcinoma is the third most common metastatic tumor to the bone and soft tissues of the head and neck. The common sites of metastatic renal cell carcinoma in head and neck region are nasal cavity, paranasal sinuses, oral mucosa, gingiva, tongue, palate, lip as the favored site. The present paper deals with one patient with metachronous oral tongue, nasal cavity and suspicious brain metastases after 2 years of renal cell carcinoma nephrectomy. Also, the patient had history of total thyroidectomy for thyroid follicular carcinoma. Total excision of nasal cavity and tongue mass were performed. Therapeutic aspects are briefly reviewed in literature.

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Recurrent Neuro-Sweet Disease Associated with Preceding Upper Respiratory Infection: a Case Study

  • Suh, Hie Bum;Kim, Hak Jin
    • Investigative Magnetic Resonance Imaging
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    • v.22 no.3
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    • pp.187-193
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    • 2018
  • Sweet's syndrome also known as acute neutrophilic dermatosis is a multisystem inflammatory disorder characterized by fever, malaise, leukocytosis, and skin lesions. Sweet's syndrome affects multiple organs though only rarely does it affect the central nervous system (CNS) when it does it is called Neuro-Sweet disease (NSD). We report on a case study of a biopsy-proven NSD in a 50 year old man. Serial magnetic resonance imaging (MRI) showed repeated CNS involvement of Sweet's syndrome after a respiratory tract infection preceded it. On the MRI, T2 hyperintense lesions occurred at multiple sites and disappeared after steroid therapy.

Von Reklinghausen's Disease Associated with Neurofibrosarcoma in Mediastinum (종격동에 발생한 악성변환 다발성 신경섬유종증 1례)

  • Sung, Si-Chan;Woo, Chong-Su;Lee, Sung-Kwang
    • Journal of Chest Surgery
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    • v.12 no.3
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    • pp.165-169
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    • 1979
  • Neurofibromatosis [Von Recklinghausen`s disease] is a rare Mendelian dominant disease, which shows multiple generalized symptoms and signs at various sites [Ex Skin, Bone, Nerve, Endocrine, Mediastinum rarely Lung, etc.]. We experienced one case of neurofibromatosis which has typical skin lesions [cafe-au-lait, multiple nodules, axillary freckling] with neurofibrosarcoma [malignant change from mediastinal lesion]. Patient was admitted our department because of recently developed severe dyspnea which was probably due to main tracheal compression by mediastinal neurofibrosarcoma. After successful removal of mediastinal mass dyspnea disappeared completely. Patient`s postoperative course was uneventful, and the patient was discharged 14 days after operation.

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Experimental Study on Optimization of Slab Form Design Using Harmonic Search Algorithm (하모닉 알고리즘을 활용한 슬래브 거푸집 디자인 최적화에 관한 실험적인 연구)

  • Jang, Indong;Yi, Chongku
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2018.05a
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    • pp.185-186
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    • 2018
  • The slabfrom, which is commonly used in construction sites, has drawbacks in that the workability of the workers is reduced due to their heavy weight. This study investigates the possibility of design optimization of euro form between structural stability and weight using harmonic search algorithm. The harmonic search algorithm is a metaheuristic optimization technique that obtains multiple optimal solution candidates through iterative. As a result of multiple attempts of optimization through the algorithm, it was possible to design the formwork which is structurally stable and light in weight than the existing formwork.

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Development of Cartographic Models for the Resolution of Conflicting Land Use (토지이용의 상충성 해결을 위한 지도학적 모델의 개발)

  • Yi, Gi-Chul
    • Journal of Korean Society for Geospatial Information Science
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    • v.2 no.1 s.3
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    • pp.131-139
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    • 1994
  • Geo-spatial information system technology and cartographic modeling techniques were used as a way to Improve the land use planning process. Off-road vehicle(ORV) trails, timber harvest sites, timber haul mads and wildlife ruffed grouse habitats areas should be allocated together in the Wayne National Forest in the United States. Automated spatial cartographic models were developed to resolve the conflicts of the multiple land use allocation. The techniques of descriptive and prescriptive modeling made the multiple land use allocation efficient and effective.

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Prediction Models on Internet Auctions

  • Hong, Chong-Sun;Song, Ki-Yong
    • Journal of the Korean Data and Information Science Society
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    • v.17 no.3
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    • pp.795-804
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    • 2006
  • Most internet auction sites open to users the bid history with the ascending order of bid amounts. Whereas eBay.com presents second bid prices, auction.co.kr provides highest bid prices. In this paper, the bidhistory is arranged according to the passage of tim, which can help to understand the situations and trends of bid prices, especially for multiple auctions. This manipulated data can be visualized by using profile plots. The successful bid prices could be estimated based on some prediction models with appropriate prior informations. Both sellers and bidders can be provided useful informations with these statistical analyses, and then fair online auctions in Korea will grow actively and rapidly.

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Progressive nicotine poisoning by multiple transdermal nicotine patches

  • Kang, Jeong Ho;Lee, Sung Kgun
    • Journal of Medicine and Life Science
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    • v.18 no.2
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    • pp.31-34
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    • 2021
  • The pharmacokinetic properties of transdermal nicotine patches (TNPs) are different from those of other routes of nicotine administration; further, acute nicotine poisoning by TNPs may present with different clinical features. In the present report, we describe the case of a 23-year-old woman who was admitted to emergency department (ED) at Jeju National University Hospital with loss of consciousness. Five hours before the ED visit, she used multiple TNPs to attempt suicide. Initially, nausea and vomiting occurred, and the symptoms worsened over time. We immediately removed the TNPs, and the application sites were gently washed with sterile water. The patient's level of consciousness gradually improved, and she fully recovered an altered mental status 5 hours later. Her initial urinary cotinine level was 324 ng/mL. Physicians should be aware that acute nicotine poisoning by TNPs can cause various toxic symptoms.

Fully connecting the Observational Health Data Science and Informatics (OHDSI) initiative with the world of linked open data

  • Banda, Juan M.
    • Genomics & Informatics
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    • v.17 no.2
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    • pp.13.1-13.3
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    • 2019
  • The usage of controlled biomedical vocabularies is the cornerstone that enables seamless interoperability when using a common data model across multiple data sites. The Observational Health Data Science and Informatics (OHDSI) initiative combines over 100 controlled vocabularies into its own. However, the OHDSI vocabulary is limited in the sense that it combines multiple terminologies and does not provide a direct way to link them outside of their own self-contained scope. This issue makes the tasks of enriching feature sets by using external resources extremely difficult. In order to address these shortcomings, we have created a linked data version of the OHDSI vocabulary, connecting it with already established linked resources like bioportal, bio2rdf, etc. with the ultimate purpose of enabling the interoperability of resources previously foreign to the OHDSI universe.