척추마취제 주입 15 분후 경막외강으로 일회 주입한 생리식염수가 감각차단범위에 미치는 영향

박찬홍,박진웅,김봉일,노운석 대한마취과학회 1998 Korean Journal of Anesthesiology Vol.34 No.5

Background :The effect of epidural local anesthetics on the spinal anesthesia is not well known during the combined spinal epidural anesthesia(CSE). But, Blumgart and his colleagues suggested that epidural volume load affect spinal sensory blockade level. This study was designed to investigate the effect of extradural injection of normal saline on the level of the subarachnoid block according to the time of the extradural saline injection. Methods : Sixty patients undergoing lower abdominal and lower extremity operation were involved in our study. After performing subarachnoid block with 12 mg of hyperbaric tetracaine, divided into as follows : Group 1(n=20), received only spinal anesthesia; Group 2(n=20), received 15 ml of epidural saline immediately after spinal anesthetic administration; Group 3(n=20), received 15 ml of epidural saline at 15 minutes after spinal anesthetic administration. Sensory blockade level was checked by pinprick test at 5, 10, 15, 20, 25, 30, 40, 60 and 90 minutes. Blood pressure, heart rate and incidence of complications such as hypotension, bradycardia, nausea and high spinal block were also measured. Results : The maximal sensory blockade level of Group 2 was higher than those of Group 1 and Group 3(p<0.05). However, there was no difference between Group 1 and Group 3 as comparing to the maximal sensory blockade level. Changes of blood pressure and heart rate and incidence of complications were not different comparing with each other groups(p>0.05). Conclusions : From the results obtained, epidural volume load at the 15 minutes after spinal anesthetic administration did not affect the sensory blockade level of spinal anesthesia during CSE. (Korean J Anesthesiol 1998; 34: 977∼983)

울릉분지에서의 선상중력과 위성중력 통합에 의한 중력 해상도 향상 및 해석

박찬홍,김정우,허식,원중선,석봉출,유해수,Park, Chan Hong,Kim, Jeong U,Heo, Sik,Won, Jung Seon,Seok, Bong Chul,Yu, Hae Su 한국지구물리물리탐사학회 1999 지구물리 Vol.2 No.1

최근 공개된 위성중력을 이용하는 오차 최소화 기법을 적용하여 선상중력내 존재하는 구간 측선간 오차나 교차점 오차를 성공적으로 보정하였으며, 보정된 선상중력을 위성중력과 결합하여 고해상 중력분포를 도출하였다. 오차 최소화 과정에서 울릉분지의 선상중력은 위성중력보다 장주기 성분에서 상대적으로 크게 보정되었으나 단주기 성분은 그대로 보존되었다. 이것은 선상중력이 갖는 단주기의 중력 성분이 훼손되지 않은 채 안정되고 연속성을 갖는 장주기의 인공위성 중력분포에 잘 접합될 수 있다는 것을 보여 준다. 통합된 후리에어이상도는 위성중력의 장주기 성분과 선상중력의 단주기 성분을 모두 표현하므로 해저지형 및 지질분포의 해석에서 보다 상세하고 신뢰성 있는 정보를 제공한다. 후리에어이상은 수심이 깊은 분지 중앙 지역이 해저산이나 대지 등 높은 지형으로 이루어진 분지 주변부 보다 상대적으로 낮게 분포하는 등 전반적으로 해저지형의 분포 경향에 부합되어 변화한다. 그러나 대륙사면을 이루고 있는 분지의 서쪽 및 동쪽 주변부를 따라서는 지역적으로 함몰된 퇴적기반과 두꺼운 퇴적층 및 대륙 주변부에서 특징적인 가장자리 효과로 인한 저이상대가 발달하고 있다. 울릉도 북동부에 위치한 한국대지 및 울릉대지에서 북동-남서방향의 선형분포를 갖는 중력이상은 동해가 열개되는 동안 균열된 지각 사이를 따라 일어난 화산활동의 결과로 형성된 해산이나 관입암체가 선형으로 배열함으로서 기인한 것으로 해석된다. 선형으로 배열된 고중력분포는 울릉대지 서쪽 경계부에서 급구배를 보이는 북북서-남남동 방향의 직선적인 중력분포에 의해 절단되고 있는 데 이 급구배의 중력이상은 울릉대지 서부 경계를 이루는 단층선애에 기인한다. 울릉대지가 서쪽으로 뚜렷한 단층 접촉을 나타내고 있으나 지형적인 형태에 있어서 대비되지 않는 것은 울릉대지가 단층을 경계로 분리되어 이동되어 왔을 가능성을 시사한다. 분지의 중앙 북동부에서는 수심이 깊어지는 데 비해 중력치는 오히려 높아지는 경향을 나타내고 있는 것은 맨틀이 주변부에 비해서 상대적으로 천부에 존재하고 있는 것이 가장 큰 요인이며, 해저지각의 두께가 얇은 대신 지각의 밀도가 주변 대륙보다 높은 데도 기인한다. The errors between track segments or at the cross-over points of shipborne gravity were successfully reduced by applying a cross-over error adjustment technique using satellite gravity. The integration of shipborne and satellite altimeter-implied free-air gravity anomalies after the cross-over error adjustment resulted in a high resolution gravity map which contains both short and long wavelength components. The successful adjustment of the cross-over errors in the shipborne gravity using the satellite gravity suggests that the shipborne gravity can be combined with the satellite anomalies characterized by a stable and long wavelength component. The resulting free-air anomaly map is evenly harmonized with both short and long wavelength anomalies. Thus the corrected anomaly map can be better used for the geological interpretation. Free-air anomalies with more than 140 mGal in total variations generally correspond to the seafloor topographic changes in their regional patterns. A series of gravity highs are aligned from the Korea Plateau to the Oki Island, which are interpreted to be caused by seamounts or volcanic topographies. The gravity minima along the western and southern shelf edge are associated not only with the local basement morphology and thick sediment fill at the continental margin, but also possibly with the crustal edge effect known for passive continental margins. Series of NE-trending linear anomalies are possibly caused by a swarm of volcanic intrusions followed the initial opening of the Ulleung Basin. The linear high anomalies in the Ulleung Plateau are terminated by the straightly NNW-trending anomalies with a sharp gradient in its western boundary which indicates a fault-line scarp. The opposite side adjoined with the fault-line scarp shows no correlation with the fault-line scarp in geometry indicating that the block might be horizontally slided from the north. A gravity high in contrast to the deepening in seafloor toward the northeastern central Ulleung Basin is probably responsible for the thin crust and shallow seated mantle. The gravity minima along the western and southern shelf edge are associated not only with the local basement morphology and thick sediment fill at the continental margin, but also possibly with the crustal edge effect known for passive continental margins. Series of NE-trending linear anomalies are possibly caused by a swarm of volcanic intrusions followed the initial opening of the Ulleung Basin. The linear high anomalies in the Ulleung Plateau are terminated by the straightly NNW-trending anomalies with a sharp gradient in its western boundary which indicates a fault-line scarp. The opposite side adjoined with the fault-line scarp shows no correlation with the fault-line scarp in geometry indicating that the block might be horizontally slided from the north. A gravity high in contrast to the deepening in seafloor toward the northeastern central Ulleung Basin is probably suggestive of a thin crust and shallow seated mantle.

[사실, 이렇게 본다 1] 신라촌락문서를 바라보는 눈

박찬홍 내일을 여는 역사 2002 내일을 여는 역사 Vol.9 No.-

[왜?] 신라에는 왜 여왕이 있었을까?

박찬홍 내일을 여는 역사 2000 내일을 여는 역사 Vol.2 No.-

모션인식을 활용한 Human UI/UX 를 위한 IoT 기반 스마트 헬스 서비스

박찬홍,박상주 한국융합신호처리학회 2017 융합신호처리학회 논문지 (JISPS) Vol.18 No.1

In this paper, we proposed IoT based Smart Health Service using Motion Recognition for Human UX/UI. Until now, sensor networks using M2M-based u-healthcare are using non-IP protocol instead of TCP / IP protocol. However, in order to increase the service utilization and facilitate the management of the IoT-based sensor network, many sensors are required to be connected to the Internet. Therefore, IoT-based smart health service is designed considering network mobility because it is necessary to communicate not only the data measured by sensors but also the Internet. In addition, IoT-based smart health service developed smart health service for motion detection as well as bio information unlike existing healthcare platform. WBAN communications used in u-healthcare typically consist of many networked devices and gateways. The method proposed in this paper can easily cope with dynamic changes even in a wireless environment by using a technology supporting mobility between WBAN sensor nodes, and systematic management is performed through detection of a user's motion 본 논문에서는 모션인식을 활용한 Human UI/UX 를 위한 IoT 기반 스마트헬스 서비스를 제안한다 . 현 재까지 M2M 기반의 u-healthcare 에서 적용되는 센서 네트워크에서는 TCP/IP 프로토콜이 아닌 non-IP 프로토콜을 이용하고 있다 . 그러나 서비스의 이용 확대와 IoT 기반의 센서 네트워크 관리를 용이하게 하기 위해서는 다수 의 센서들의 인터넷 연결이 반드시 요구된다 . 따라서 센서들에 의하여 측정된 자료들을 인터넷과 통신하는 것 은 물론 이동이 가능해야 하기 때문에 네트워크 이동성을 고려한 IoT 기반 스마트헬스 서비스를 설계하였다 . 또한 IoT 기반 스마트헬스 서비스는 기존의 헬스케어 플랫폼과는 다르게 바이오 정보뿐만이 아니라 동작감지를 위한 스마트 헬스 서비스를 개발하였다 . u-healthcare 에서 사용되는 WBAN 통신은 일반적으로 많은 네트워크화 된 장치 및 게이트웨이로 구성된다 . 본 논문에서 제안하는 방법은 WBAN 센서 노드간의 이동성을 지원하는 기 술을 이용함으로써 무선 환경에서도 동적 변화에 쉽게 대응할 수 있고 , 사용자의 동작감지를 통해 체계적인 관 리가 이루어진다

뇌수술 환자에서 두부 핀 고정 시 두피신경차단이 심혈관계 반응에 미치는 영향

박찬홍,김봉일,최병기 대한마취과학회 2000 Korean Journal of Anesthesiology Vol.38 No.4

Background : 1t is already known that the cranial pinning causes a sudden increment of blood pressure and heart rate which is harmful especially in brain surgery patient. These changes may be reduced by local infiltration at the sites of cranpial pinning. This study was designed to investigate the hemodynamic effects of nerve block by cranial pinning and compare them with the effects of local infiltration at the pinning site. Methods : Forty patients of brain surgery with cranial pinning were involved. After general anesthesia with isoflurane and 50% NzO, they were divided into 2 groups randomly: the control group (n =20), had local infiltration at each pinning site with 1% lidocaine 2 ml, and the study group (n= 20), had nerve block of the supraorbital, and supratrochlear, and postauricular branches of the great auricular nerve with lidocaine 2 ml, the auriculotemporal nerve with lidocaine 2,5 ml, and the greater and lesser occipital nerves with lidocaine 2.5 ml. The hemodynamic variables(systolic, diastolic, mean blood pressure, and heart rate) were measured' at the 3 different points just before cranial pinning, and 1 min and 5 min after cranial pinning. Results : The values of hemodynamic variables at i min after cranial pinning increased in both groups when compared with just before cranial pinning, but there was no difference between the two groups. The increased values at 1 min were not high clinically, and returned to the levels recorded before cranial pinning by the 5 min recording time in both groups. Conclusion : From these results, we concluded that nerve block could also reduced the harmful hemodynamic effect of cranial pinning. (Koresn J Anesthesiol 2000; 38: 619-622)

해저지형 및 자기이상 분석에 의한 독도 및 주변 해산 구조 및 성인 연구

박찬홍,김창환,천종화,민경덕,한현철,박용안 대한지질공학회 2002 대한지질공학회 학술발표회논문집 Vol.2002 No.1

Enflurane 마취하 간절제술시 간혈류차단이 술후 간기능에 미치는 영향

박찬홍,김봉일,강원재 대한마취과학회 1999 Korean Journal of Anesthesiology Vol.37 No.1

Background: The most common cause of postoperative hepatic dysfunction is decreased hepatic blood flow due to decreased cardiac output and vasoactive substance during anesthesia. It might be suggested that hepatic blood flow occlusion affects postoperative dysfunction. This study was designed to investigate this possible effect on postoperative liver function. Methods: Forty-seven patients; hepatic resection with temporarily hepatic vascular occlusion (Pringle's maneuver) under enflurane anesthesia were involved. The duration of liver ischemia was 44.2 20.0 min. Blood transfusions (8.3 5.1 pints) were administered to nine patients intraoperatively. Aspartate aminotransferase (AST), alanine aminotransferase (ALT), lactate dehydrogenase (LDH), and total bilirubin (TB) were measured at preoperation, postoperative 6 hours, 1, 3, 7 and 14 days. Alkaline phosphatase (AP) was measured also but not at postoperative 6 hrs. Results: The values of postoperative AST, ALT, LDH were increased sharply but returned at postoperative 7th day. AP did not change significantly. TB levels rose for 7 days postoperatively and then fell. Conclusion: From these results, it is inferred that the effect of hepatic ischemic insult under enflurane anesthesia on postoperative liver function is not significant. (Korean J Anesthesiol 1999; 37: 19∼24)

사진으로부터 실제 치수를 측정해내고 3D로 모델링하는 소프트웨어 Photo 모델러

박찬홍 한국전산구조공학회 2001 전산구조공학 Vol.14 No.3

Comprasion of Effectiveness of CT vs C-arm Guided Percutaneous Radiofrequency Lumbar Facet Rhizotomy

박찬홍 대한통증학회 2010 The Korean Journal of Pain Vol.23 No.2

Background:Facet joint have been implicated as a source of chronic low back pain. Radiofrequency denervation has demonstrated the most solid evidence. To increase safety and efficacy of treatment, computed tomography (CT) guidance injection has been used in several disease. The purpose of this study was to evaluate the efficacy of CT-guided radiofrequency rhizotomy in the treatment of facet joint pain. Methods:A total of 40 patients were randomized to undergo radiofrequency facet joint denervation under CT guidance or C-arm guidance. All patients were examined visual analogue scale (VAS) score before treatment, 1 month, and 3 months after treatment. Results:The VAS in both groups showed significant improvement over the 1-month interval. No significant difference in the VAS score among the group was observed. Conclusions:In this study there was no significant difference between CT guidance lumbar rhizotomy and C-arm guidance lumbar rhizotomy. Therefore CT-guided radiofrequency denervation of the lumbar facet joint was a minimally invasive technique that appears effective. (Korean J Pain 2010; 23: 137-141)