Whole Spine PA 검사 시 Center와 Tube Angle 변화에 따른 Cobb`s Angle의 비교

정승영(Seung-Young Chung),조성배(Sung-Bae Cho),윤정수(Jung-Soo Yoon),문희석(Hee-Seok Moon),조남수(· Nam Soo Cho) 대한영상의학기술학회 2012 대한영상의학기술학회 논문지 Vol.2012 No.-

목적: Whole Spine 검사 시 Center 와 Tube angle의 변화에 따라 Cobb’s angle의 변화를 측정하고자 하였다. 대상 및 방법: X-ray 장비는 canon사의 DHF-158를 사용하였고, 실험 도구는 Whole spine tool과 1칸에 4.3cm인 grid를 사용하였다. SID는 2m로 하고 일반적인 Whole spine 검사 시 환자와 detecter 사이가 약 20cm 정도 떨어지므로 Whole spine tool을 detecter 로 부터 약 20cm 떨어진 곳에 설치하고 grid를 부착 하였다, 정확한 center에 x-ray를 입사한 이미지를 얻기 위해 center점을 잡고 입사하여 영상을 획득하였다. 또한 어긋난 center로 입사한 영상의 이미지를 얻기 위해 tube를 -4.3cm, -8.6cm 내려서 x-ray를 입사하여 영상을 획득하였다. 그리고 tube angle 변화에 따른 Cobb’s angle을 측정하기 위해 tube angle을 각각 0°, 10°, 20°, 30° 주어서 영상을 획득하였다. 획득된 총 7개의 영상 각각의 Cobb’s angle을 측정하여 비교하였으며, 위와 같은 실험을 5회 반복하여 비교하였다. 결과: 7개 영상 모두 똑같은 Cobb’s angle이 나왔다. 결론: Center 와 Tube angle의 변화는 Cobb’s angle에 영향을 끼치지 않은 것을 알 수 있었다. Purpose: To check Cobb’s angle difference by the change of Center and Tube angle during Whole Spine examination. Materials and Methods: X-ray machine is DHF-158HII by Cannon used; experiment tool is spine tool and Grid that 4.3cm per each space used. Firstly SID is 2M and installs a tool far away about 20cm and attaches Grid because the gap distance between patient spine and detector is almost 20cm far during Whole Spine PA exam. In sequence, to acquire the image by penetrating x-ray after pointing exact center. Then, to hold detector and down the tube 4.3cm and 8.6cm and then to get total 3 images by entering x-ray. Next, to make a center to patient’s head portion and enter x-ray for the image and then to get images by the change of tube angle as a 10,20 and 30 angle to caudal direction. To compare each 7 image Cobb’s angle we acquired. Results: Most 7 images show almost same Cobb’s angle. Conclusion: The change of Center and Tube angle does not affect Cobb’s angle.

해면정맥동내의 유표피종

김상용(Sang Yong Kim),김승민(Seong Mim Kim),김한규(Han Kyu Kim),박문선(Moon Sun Park),정승영(Seong Young Chung),정성삼(Sung Sam Jung),박기석(Ki Suk Park) 대한두개저학회 2010 대한두개저학회지 Vol.5 No.1

Epidermoid tumor rarely arises within the cavernous sinus and produce clinical symptoms. This 21-year old man presents with 6-year history of headache, diplopia, and ptosis. An evaluation revealed a mass located in the right cavernous sinus and he underwent gamma knife radiosurgery. But the symptoms did not improved, and there was slight increase in size of mass in follow-up evaluation. So, he underwent operation, the tumor was near-totally removed after surgery, and histologic finding revealed an epidermoid tumor. The patient was discharged with no newly developed neurologic deficits. In later three years follow-up, there was no evidence of recurrence. Magnetic resonance imaging, especially diffusion-weighted image, is a valuable tool in diagnosis of intracerebral epidermoid tumors. Radiotherapy is known to be ineffective for epidermoid tumors. Surgical removal should be attempted, but a less aggressive surgical strategy should be considered if there is strong adherence between the tumor capsule and the brain parenchyme particularly in eloquent areas. Regular long term follow-up is necessary for evaluation of recurrence.

자율주행 장치를 위한 특징 맵 기반 SLAM

김정민,정승영,전태룡,김성신,Kim, Jung-Min,Jung, Sung-Young,Jeon, Tae-Ryong,Kim, Sung-Shin 한국정보통신학회 2009 한국정보통신학회논문지 Vol.13 No.7

본 논문에서는 초음파와 전자나침반, 엔코더, 자이로센서를 복합적으로 구성하여 로봇의 SLAM 방법을 제시하였다. 일반적으로 전자 나침반과 엔코더, 자이로를 이용한 로봇의 위치측정은 작업공간에서의 상대위치만을 알 수 있다. 실제 로봇이 작업공간에서 작업을 하기 위해서는 로봇의 절대위치 정보를 알아야만 하며, 이는 SLAM으로 얻을 수 있다. 본 논문에서는SLAM 구현을 위하여 로봇의 작업공간을 초음파 센서를 이용하여 구조적 맵 생성 기법을 통해 맵을 생성한 후, 이를 특정 맵으로 변환하였다. 생성된 특정 맵과 맵 매핑을 활용하여 맵 상의 절대위치를 구한다. 실험은 직접 설계 및 제작한 로봇을 이용하였고, 실험 방법은 초기 좌표를 모르는 로봇을 임의의 장소에 위치 시키고 제안한 SLAM 알고리즘을 이용하여 로봇의 전역 좌표를 찾도록 하였다. 실험 결과, 제안한 SLAM 알고리즘을 이용하여 맵 상의 절대위치를 모두 찾음을 확인하였다. This paper is presented an simultaneous localization and mapping (SLAM) algorithm using ultrasonic for robot and electric compass, encoder, and gyro. Generally, localization based upon electric compass, encoder, and gyro can be measured just local position in workspace. However, actual robot must need an information of the absolute position in workspace to perform its mission, Absolute position in workspace could be calculated using SLAM algorithm. To implement SLAM in this paper, a map is built using ultrasonic sensor and hierarchical map building method. And then, we the map will be transformed into a feature map. The absolute position could be calculated using the feature map and map mapping method. As a test bed, we designed and construct an autonomous robot and showed the experimental performance of the proposed SLAM algorithm based on feature map. Experimental result, we verified that robot can found all absolute position on experiments using proposed SLAM algorithm.

포스터 발표 - 무기재료분과 / 전기화학분과 / 촉매분과 : Impedance 측정에 의한 염소산염의 양극산화반응에 관한 연구

엄성현,정승영,탁용석,이충영,남종우 ( Sung Hyun Um,Seung Young Jung,Yong Sug Tak,Choong Young Lee,Chong Woo Nam ) 한국공업화학회 1997 한국공업화학회 연구논문 초록집 Vol.1994 No.1

뇌하수체 거대선종으로 오인된 안장가로막 뇌수막종과 뇌하수체 선종 1례

오정태(Jung Tae Oh),정승영(Seung Young Chung),김승민(Seong Min Kim),박문선(Moon Sun Park),정성삼(Sung Sam Jung),박기석(Ki Suk Park) 대한두개저학회 2009 대한두개저학회지 Vol.4 No.1

The coexistence of a pituitary adenoma and another intracranial tumor is an uncommon finding. We report a rare case of diaphragm sellae meningioma and pituitary adenoma mimicking pituitary macroadenoma in a 41-year-old woman. The patient presented with bitemporal hemianopsia and was pregnant. Magnetic resonance imaging demonstrated a bright, homogeneously enhancing intra- and suprasellar mass, which was interpreted as a pituitary macroadenoma. Transsphenoidal extirpation was used on 1st operation and Orbitozygomatic craniotomy(transcavernous approach) was done on 2nd operarion because of a suspicion of nonsecreting pituitary macroadenoma. Histopathologically, the tumor was diagnosed as a pituitary adnoma and a meningothelial meningioma. Common carotid angiography before the second surgery revealed that the mass was supplied by the left opthalmic artery. The tumor was near-totally removed via a transcranial route, and she had lost her left vision after a second surgical procedure. It is difficult to make a differential diagnosis between nonsecreting pituitary macroadenomas with suprasellar extension and diaphragma sellae meningiomas preoperatively from the viewpoint of neuroimaging. Preoperative differentiation is essential, because the transsphenoidal approach is used for surgical removal of adenomas, while meningiomas are approached via a craniotomy.

대후두공 주변에 발생한 경막내 축외 해면상 혈관종

김승민(Seong-Min Kim),정승영(Seung-Young Chung),정성삼(Sung-Sam Jung),박문선(Moon-Sun Park) 대한두개저학회 2006 대한두개저학회지 Vol.1 No.2

Intraparenchymal cavernous hemangioma(CH) of central nervous system(CNS) was already well known to us, but the intradural and extra-axial CH was not and very rare. This case summarizes our surgical experience intradural-extramedullary CH on foramen magnum. A 44-year-old man complained occipital headache. Magnetic resonance imaging(MRI) showed a 15mm sized well enhancing mass that slightly displaced the medulla to the right side. An angiogram showed tumor staining with feeding artery from left posterior cerebellar artery(PICA). Our diagnosis with imaging studies was extra-axial tumor including meningioma, hemangiopericytoma. A suboccipital craniectomy and C1 laminectomy were performed. An encapsulated, highly vasculized mass was visualized and removed. Mass was purely extra-axial and pathological evaluation demonstrated a CH. So this case of CH reminds the neurosurgical community to consider CH in the differential diagnosis for extra-axial mass on foramen magnum.

유전자 알고리즘, 퍼지 룰을 이용한 다중 경로 계획

허정민(Jeong-min Heo),김정민(Jung-min Kim),정승영(Sung-young Jung),김성신(Sung-shin Kim),김광백(Kwang-baek Kim) 한국지능시스템학회 2008 한국지능시스템학회 학술발표 논문집 Vol.18 No.1

본 논문에서는 신경망 모델(neural network model)과 유전자 알고리즘(genetic algorithm)을 이용한 실시간 경로 계획(real-time path-planning)과 퍼지 룰(fuzzy rule)을 이용한 효율적인 다중경로계획(multiple path-planning)을 제안한다. 실시간 경로 계획은 빠른 시간 내에 최적 경로의 생성이 반드시 수행되어야 하므로, 본 논문에서는 경로 계획 중 장애물 지역과 비장애물 지역을 빠르게 확인하기 위해 신경망 모델을 이용하며, 이동 방향 및 최적 경로 탐색을 위하여 유전자 알고리즘을 이용하였다. 또한 충돌 구역에서의 효율적인 다중 경로 계획을 위해, 퍼지를 이용하여 경로를 재계획 하였다. 퍼지의 경우, 현재 위치에서 목표 지점으로의 방향을 계산하기 위한 퍼지 소속 함수와 현재 위치와 충돌 구역까지의 거리 값을 가중치로 세우고 퍼지 룰을 결정하여 경로계획올 수행하였다. 시뮬레이션을 통해 실험해본 결과, 퍼지 룰을 사용했을 때 사용하지 않았을 때 보다 좋은 성능을 나타남을 확인할 수 있었다.

M.A.C 코스메틱 스토어 리모델링 디자인에 관한 연구 -"Dream of M.A.C"을 컨셉으로 한 코스메틱 스토어 디자인 중심으로-

송민경 ( Min Kyung Song ),이경희 ( Kyung Hee Lee ),홍성은 ( Sung Eun Hong ),이진민 ( Jin Min Rhie ),이옥재 ( Ok Jae Lee ),정승영 ( Seung Young Jung ) 숙명여자대학교 산업디자인연구소 2014 숙명디자인학 연구 Vol.18 No.-

본 연구는 Space Branding Studio 과목의 과제전 작품인 M.A.C Cosmetics Store Remodeling 프로젝트에 대한 공간 디자인 프로세스 연구이다. 본 연구의 과정은 크게 네 단계로 분류된다. 첫 번째 단계로는 우선 상업공간에 관한 전반적인 이론 수업을 통해 학생들이 스스로 상업공간을 이해할 수 있도록 하였고, 이를 바탕으로 학생들이 계획하고 있는 디자인 아이디어를 발전시킬 수 있는 브랜드와 사이트의 선정이 이루어졌다. 두 번째 단계로는 그 결과물들을 토대로 교수진과 학생들간의 토의가 이루어졌으며, 그를 바탕으로 학생들은 디자인 아이디어를 발전시켰다. 세 번째 단계는 스튜디오의 기본 가이드라인에 따라 선정된 사이트에 구체화시키는 작업이 이루어졌으며, 마지막으로는 최종 결과물들을 시각적인 방법으로 제시하는 작업이 이루어졌다. 이를 위해 전체 15주 수업기간 동안 학생들의 작업 수집이 진행되었으며 실제 작품의 진행 기간은 약 15주가 소요되었다. The subject of this study is for space design process of ‘M.A.C Cosmetics Store Remodeling Design Project’ from Space Branding Studio. The Process is divided into four steps. First, students are asked to examine the commercial space from the theory class, and, based on the information; students should select a brand and site, which they wanted to develop their design scheme. Second, on the basis of the previous step, students and faculty have intensely discussed about the issue of the design process. Then, on the basis of discussion, students develop their design process. Thirdly, each of the content presented in the studio brief has been embodied on the site. Last, the final outcome should be presented in a proper visual way. To do this, the works were collected during 15 weeks of the class; it has been about 15 weeks to progress the project.

뇌종양으로 오인될 수 있는 단락관과 관련된 반응성 신경교증

위승복 ( Seung Bok Wee ),김승민 ( Seung Min Kim ),정성삼 ( Sung Sam Jung ),박기석 ( Ki Seok Park ),정승영 ( Seung Young Jung ),박문선 ( Moon Sun Park ) 대한뇌종양학회·대한신경종양학회·대한소아뇌종양학회 2008 대한뇌종양학회지 Vol.7 No.2

There are several pathologic conditions which can be around the shunt catheter. But, reactive gliosis related to shunt catheter is uncommon. We report a case of reactive gliosis which has been suggested to catheter-related tumorous condition such as glioblastoma. The authors report a 45-year-old man who had a history of ventriculoperitoneal shunt placement for hydrocephalus after traumatic intracranial hemorrhage 10 years ago. General weakness and dementic mentality developed recently. MRI revealed multi-lobulating contoured dark signal lesion on T2 weighted image and MR spectroscopy suggest tumorous condition such as meningioma or lymphoma. The stereotacxic biposy was performed under navigation guide. Histopathologically, the specimen showed strong positive reaction on glial cells. There was no remarkable results on microbiologic study. After steroid medication, patient`s condition was improved and enhancing mass was subsided. There are several diseases related to shunt catheter that to be ruled out, we must note the possibility of reactive gliosis mimicking brain tumor, like this case.

내시경을 이용하여 경접형동 접근술로 치료한 여포 자극 호르몬 분비 뇌하수체 샘종

정종철(Jong Chul Chung),김승민(Seong Min Kim),정성삼(Sung Sam Jung),정승영(Seung Young Chung),김병준(Byung Joon Kim) 대한두개저학회 2007 대한두개저학회지 Vol.2 No.2

Follicle-stimulating hormone-secreting pituitary adenomas are rarley diagnosed and likely considered as a non-functioning pituitary tumor. Because they usually do not present until of sufficient size to cause neurologic deficits by mass effect or hypopituitarism, whereas other functioning tumors - acromegaly, prolactinoma, Cushing s disease - frequently present earlier with symptoms caused by physiologic effects of excess hormones that they secrete. 62-year-old man suffered from visual disturbance. Endocrinologic evaluation showed high serum FSH level. Suprasellar extended pituitary mass with compression to optic chiasm & cavernous sinus was imaged on MRI and removed by endoscope assisted endonasal transsphenoidal surgery. It was composed of gonadotroph showed strong immunohistochemical reactivity against FSH and LH. Uncommon pituitary tumors such as FSH-secreting adenomas can be defined early and accurately through correlation between their clinical, endocrionological, radiographic and immunohistochemical characteristics.