건축물 안전진단 업무 개선방안에 관한 연구

손상준,박태근 대한건축학회지회연합회 2005 대한건축학회지회연합회 학술발표대회논문집 Vol.1 No.1

After breaking down Sung-Su Bridge and Sam-Pung Department, inspection and maintenance of buildings in korea have carried out 26,459 buildings through the special law for building safety. It leads to reduce safety accidents and enhance the way of thinking for safety. By researching the current situation of safety inspection work process, this paper get a few problems : no-exist standard form, the unsuitable work process, and so on. The purpose of this paper is to analyze the current situation of safety inspection and result in few problems. It can get the circumstance : what kind of buildings need to do safety inspection, how many inspection facility do, and the situation of detailed inspection and detailed safety diagnosis. To sum up, if we would solve these problems, it could increase the quality of building maintenance for life cycle and get the long life of buildings with standard safety inspection.

핵의학과에서 ^99mTc를 이용한 방사성의약품의 투여율 측정 비교

손상준,박정규,정동경,박명환,Son, Sang-Joon,Park, Jeong-Kyu,Jung, Dong-Kyung,Park, Myeong-Hwan 대한방사선과학회 2020 방사선기술과학 Vol.43 No.2

This study was conducted by SPECT test at the Department of Nuclear Medicine at Daegu P Hospital from June 1 to October 31, 2019. A 3-way injection material was mounted among inpatients, and a syringe that was administered with radiopharmaceuticals using a ^99mTc labeled compound was secured. We tried to find a way to calculate the dose rate of each radiopharmaceutical and increase the dose rate. As a result of measuring the radioactivity of radio-pharmaceuticals using ^99mTc, the average dose rate of 60 syringes of all 6 radiopharmaceuticals was 93.26±7.34%, and the average dose rate of ^99mTc-DMSA was 77.72%, 15.54% lower than the total. As a way to increase the dosing rate, the average dose rate diluted twice with the remaining amount of syringe after administration using normal saline increased to 95.37±6.99%, and the average dose rate diluted three times increased to 96.32±6.86%. The corresponding sample t-test to compare the pre- and post-dose rates at 1 dilution and 2 and 3 dilutions. As a result of the dilution and 2 dilutions, the probability of significance was 0.013, which was significantly higher than the dilution(p<0.05). The probability of significance for dilution 1 and dilution 3 was 0.016, which was significantly higher than in one dilution(p<0.05). The sum of the average dose rate using the experimental 3-way line was the highest with 98.85±1.42% of ^99mTc, ^99mTc-ECD 98.82±1.26%, ^99mTc-Mebrofenin 98.82 ± 1.16%, ^99mTc-HDP 98.74 ± 1.91%, ^99mTc -MIBI was 98.69 ± 1.48%, and ^99mTc-DMSA was the lowest with 86.47 ± 4.74%. When the number of dilutions was 5 times using 0.5 cc of normal saline and when the number of dilutions was 5 times using 1 cc of normal saline, when the number of dilutions was 5 times using 0.5 cc of normal saline and 1 cc of nomal saline When the number of dilutions was 5 times and the syringe volume was 0.5 cc, there was a statistically significant difference (p<0.05). There was a statistically significant difference when the number of dilutions was 5 times using 1 cc of nomal saline and the number of dilutions was 5 times using 1 cc of normal saline, and the syringe volume was 0.5 cc (p<0.05).

화병 진단을 위한 증상의 판별

손상준,민성길 대한신경정신의학회 2010 신경정신의학 Vol.49 No.2

Objectives: This study aimed to identify the essential symptoms for diagnosing Hwabyung. Methods: We assessed 221 patients with depressive disorders, anxiety disorders, somatoform disorders, adjustment disorder, and so-called Hwabyung, using a structured diagnostic interview schedule that included the Korean version of SCID-I and the preliminary diagnostic criteria for Hwabyung. To select essential symptoms for diagnosing Hwabyung, we performed statistical analyses including factor analysis and logistic regression Results: Statistical analysis revealed that sensations of heat, an epigastric mass, and something pushing up in the chest ; feelings of unfair treatment ; anger ; respiratory stuffiness ; palpitations;headaches ; sighing ;“ haan” ; depressive mood ; frightening easily ; dry mouth; and many thoughts were the essential symptoms for a diagnosis of Hwabyung. Conclusion: Based on these results, we suggest a research diagnostic criteria for Hwabyung.

Metal artifact reduction algorithm의 두경부 CT에 대한 적용 가능성 평가

손상준,박장필,김민정,유숙현,Son, Sang Jun,Park, Jang Pil,Kim, Min Jeong,Yoo, Suk Hyun 대한방사선치료학회 2014 대한방사선치료학회지 Vol.26 No.1

목 적 : 두경부 치료계획 CT영상에서 dental implant로 인한 metal artifact 발생 시 O-MAR(Metal artifact Reduction for Orthopedic Implants)(ver. 3.6.0, Philips, Netherlands)를 적용할 수 있을지 여부를 평가하고자 한다. 대상 및 방법 : 모든 CT영상은 Brilliance Big Bore CT(Philips, Netherlands)에서 관전압 120kVp, 2mm 두께로 촬영하였으며, O-MAR를 이용하여 Metal artifact reduction 후 전산화치료계획장비(Eclipse ver 10.0.42, Varian, USA)로 원본영상과 비교, 분석하였다. O-MAR의 기본적인 성능 테스트를 위해 Metal artifact가 발생하지 않은 영상과 발생한 영상에서 O-MAR 적용시, HU 변화를 검증하기 위해 원통형 팬텀과 cerrobend 막대, 불균질 팬텀을 이용하여 실험하였다. 각각의 원본 영상과 O-MAR 적용 영상에서 관심영역 내 HU 변화를 측정하였다. 이를 바탕으로 본 연구의 주목적인 dental implant로 인한 metal artifact 발생 영상을 재현하기 위해 팬텀을 제작하여 사용하였고, 실제 임상 환자 영상에 O-MAR를 적용한 영상과 원본 영상 그리고 artifact 부분을 보정한 영상의 선량 분포를 SNC Patient(Sun Nuclear Co., USA)로 비교하였다. 결 과 : 두경부에서의 metal artifact를 재현한 원본 영상과 O-MAR 적용영상의 선량 분포를 비교한 결과 gamma passing rate 는 2 mm / 2% 기준으로 99.8%, 일치를 보였다. 실제 임상 환자 영상을 바탕으로 O-MAR 적용 전후 영상과 density corrected CT 영상에 동일한 조건으로 치료 계획을 수립하여 선량 분포를 비교한 결과는 98.5% 일치로 비교적 높은 gamma passing rate를 보였다. 전체적인 선량 분포 차이는 모두 2% 이내로 팬텀 실험과 실제 임상 환자 영상 실험에서 비슷한 결과로 나타났다. 하지만 선량 편차가 적더라도 국소적으로 집중되어 있는 것은 문제의 소지가 될 가능성이 있다. 화질 개선 면에서는 모든 실험에서 O-MAR 적용영상이 원본에 비해 개선됨을 알 수 있었으나, 두경부 metal artifact를 재현한 팬텀 영상 air cavity 내에서 최대 HU 값이 상승하는 경우가 생겼고, 환자 영상에서는 air cavity가 tissue로 잘못 보정되는 경우 또한 발견할 수 있었다. 결 론 : 업체에서 제시한 사용제한 사항인 피부 근처와 저밀도 영역이 공존하는 두경부에서 O-MAR의 사용 가능성을 확인해 본 결과, 원본의 왜곡과 보정이 동시에 일어났다. 심지어 팬텀 실험보다 더 심한 artifact가 생긴 환자의 경우 air cavity가 tissue로 잘못 보정되는 경우도 발생하였다. 결과적으로 아직까지는 O-MAR 알고리즘이 air cavity와 photon starvation artifact를 정확히 구분하지 못하는 것으로 보인다. 선량 측면에서의 영향은 임상에서 배제될 만큼 큰 차이를 보이지는 않았다. 임상에서 원본과 O-MAR 적용 영상을 비교하며 작업한다면 contouring, artifact 보정작업, DRR 화질 개선 등에 도움을 받을 수 있을 것으로 사료된다. Purpose : The purpose of this study is evaluation for the applicability of O-MAR(Metal artifact Reduction for Orthopedic Implants)(ver. 3.6.0, Philips, Netherlands) in head & neck radiation treatment planning CT with metal artifact created by dental implant. Materials and Methods : All of the in this study's CT images were scanned by Brilliance Big Bore CT(Philips, Netherlands) at 120kVp, 2mm sliced and Metal artifact reduced by O-MAR. To compare the original and reconstructed CT images worked on RTPS(Eclipse ver 10.0.42, Varian, USA). In order to test the basic performance of the O-MAR, The phantom was made to create metal artifact by dental implant and other phantoms used for without artifact images. To measure a difference of HU in with artifact images and without artifact images, homogeneous phantom and inhomogeneous phantoms were used with cerrobend rods. Each of images were compared a difference of HU in ROIs. And also, 1 case of patient's original CT image applied O-MAR and density corrected CT were evaluated for dose distributions with SNC Patient(Sun Nuclear Co., USA). Results : In cases of head&neck phantom, the difference of dose distibution is appeared 99.8% gamma passing rate(criteria 2 mm / 2%) between original and CT images applied O-MAR. And 98.5% appeared in patient case, among original CT, O-MAR and density corrected CT. The difference of total dose distribution is less than 2% that appeared both phantom and patient case study. Though the dose deviations are little, there are still matters to discuss that the dose deviations are concentrated so locally. In this study, The quality of all images applied O-MAR was improved. Unexpectedly, Increase of max. HU was founded in air cavity of the O-MAR images compare to cavity of the original images and wrong corrections were appeared, too. Conclusion : The result of study assuming restrained case of O-MAR adapted to near skin and low density area, it appeared image distortion and artifact correction simultaneously. In O-MAR CT, air cavity area even turned tissue HU by wrong correction was founded, too. Consequentially, It seems O-MAR algorithm is not perfect to distinguish air cavity and photon starvation artifact. Nevertheless, the differences of HU and dose distribution are not a huge that is not suitable for clinical use. And there are more advantages in clinic for improved quality of CT images and DRRs, precision of contouring OARs or tumors and correcting artifact area. So original and O-MAR CT must be used together in clinic for more accurate treatment plan.

강박장애와 공황장애 환자의 삶의 질

손상준,김세주,김찬형 大韓神經精神醫學會 2006 신경정신의학 Vol.45 No.5

Objectives : Aim of this study was to compare quality of life (QOL) in obsessive compulsive disorder (OCD), panic disorder (PD) and healthy controls. Additionally, relationship between clinical factors in patients and their QOL were explored. Methods : 49 patients with OCD, 109 patients with PD and 54 healthy controls were recruited. Total scores and scores of each domain of WHO Quality of Life scale (WHOQOL) were compared in the three groups. Correlation analysis and regression analysis were performed to examine the relationship between QOL and the clinical characteristics in the patient group. Results : Total scores and scores of all domains except environmental domain of WHOQOL in patient group were decreased compared to those in healthy control. Scores of social and psychological domains in the OCD group were lower than those in the PD group. The severity of agoraphobia and depression were factors affecting the QOL in the PD group. For the OCD group, comorbid depression was related to social and psychological domain of WHOQOL. Conclusion : QOL in patients with OCD and PD was poorer than that of healthy controls. Social relationships and psychological functioning may be poorer in patients with OCD than patients with PD. The severity of depression and agoraphobia predicted QOL in patients with PD. Comorbid depression in OCD might be a predictor of poor QOL.

플라스틱 주사기와 놈젝 주사기를 이용한 방사성 의약품의 투여율 측정 비교

손상준,박정규 한국콘텐츠학회 2020 한국콘텐츠학회논문지 Vol.20 No.10

2019년 10월부터 2020년 1월까지 대구P병원 핵의학과에서 SPECT 검사를 위한 입원환자 중 3-way 주사 재료를 장착하고, 99mTc 표지화합물을 투여하였던 주사기 120EA를 대상으로 하였다. 플라스틱 주사기 사용 시 희석 횟수에 따른 평균 투여율은 99mTc-ECD가 90.87±11.08로 가장 높았으며, 99mTc-DMSA가 75.28±7.43으로 가장 낮았다. 놈젝주사기 사용 시 희석횟수에 따른 평균 투여율은 99mTcO4가 93.58±7.96으로 가장 높았으며, 99mTc-DMSA가 91.60±6.07로 가장 낮았다. 99mTc-DMSA의 플라스틱 주사기와 놈젝 주사기의 차이가 나는지 독립표본 t-검정 결과, 유의확률은 0.007로서 플라스틱 주사기와 놈젝 주사기의 평균은 다르므로 통계적으로 매우 유의하게 나타났다(p<0.01).특히 신장검사에 사용하는 99mTc-DMSA는 소아 환자에게 주로 사용되는 방사성의약품으로 정확한 투여량이 중요하여 일반 플라스틱 주사기보다 놈젝 주사기의 사용이 필요하다고 판단된다. Between October 2019 and January 2020, 120EA of a syringe that was equipped with a 3-way injection material and administered 99mTc labeled compound among inpatients for SPECT examination at the Department of Nuclear Medicine at Daegu P Hospital. When using a plastic syringe, the average dosing rate according to the number of dilutions was 99mTc-ECD the highest at 90.87±11.08, and 99mTc-DMSA the lowest at 75.28±7.43. The average dose rate according to the number of dilutions was the highest at 93.58±7.96, and the lowest at 99mTc-DMSA at 91.60±6.07. The independent sample t-test showed whether the difference between the 99mTc-DMSA plastic syringe and the normjek syringe was statistically significant(p<0.01). The 99mTc-DMSA used for radiopharmaceuticals is a radiopharmaceutical that is mainly used for pediatric patients, and it is considered that it is necessary to use a normjek syringe rather than a general plastic syringe because the precise dosage is important.

영아에서 발생한 면역 혈소판 감소 자반병의 임상적 특징 및 치료 경과: 단일기관 후향적 연구

손상준,박경미,양유진,임영탁 대한소아혈액종양학회 2019 Clinical Pediatric Hematology-Oncology Vol.26 No.2

Background: Immune thrombocytopenic purpura (ITP) in children less than one year of age is less well characterized compared to ITP in toddlers and school-age children. Since children of different ages may have differing clinical courses, better delineation of the natural history of ITP in infants is needed. Methods: We retrospectively reviewed the admission records of 248 consecutive pediatric patients between 1 month and 15 years of age who were admitted and treated for acute ITP at Pusan National University Children’s Hospital from 2009 through 2017. All patients less than 1 year of age were identified and enrolled in this study. We investigated their demographics, clinical features, laboratory examinations, response to treatment, and long-term outcomes and made a comparison to those of children aged 1 to 10 years of age. Results: Ninety nine infants were identified. Male to female ratio was highest in infants and decreased with age. Seventy nine (79.8%) of the 99 infant were found to be under 6 months old. The median platelet counts at diagnosis was 6×109/L. Minor bleeding (bleeding score 0-2) was significantly dominant in infant compared to older subjects. Eighty two (96.5%) out of 85 patients achieved complete remission after initial intravenous immunoglobulin (IVIG) treatment. The relapse rate after initial CR was significantly lower than older ages (P=0.003). The platelet count after IVIG treatment in infant showed more rapid response compared to older subjects (P =0.04). Follow up information at 12 months was available for 70 infants. Chronic ITP at 12 month was seen less frequently in infants than in children 1 to 10 years of age (1.4% vs. 20.2%, P<0.001). Conclusion: Infants with acute ITP respond more favorably to IVIG treatment and are less likely to develop chronic ITP compared to children 1 to 10 years of age.

한국인에서 Gera 분류에 따른 뇌 기저부에 관한 연구

손상준,이재훈,구형본 대한이비인후과학회 2024 대한이비인후과학회지 두경부외과학 Vol.67 No.2

Background and Objectives The leakage of cerebrospinal fluid due to damage to the eth-moid roof and cribriform plate (CP) is one of the most serious complications of endoscopic si-nus surgery (ESS). For the risk of skull base injury during ESS, the Keros classification hasbeen widely used, but recently the Gera classification has been introduced as a tool for risk as-sessment. This study evaluated the risk of skull base damage using the Gera classification inKoreans. Subjects and Method We analyzed 592 left and right sides of 296 paranasal sinus CTs, andmeasure the angle between the lateral lamella of CP and the lateral extension of the horizontalplane passing through CP, namely the Gera angle. The angles were classified into three cate-gories: the type I (>80°, low risk), type II (45° to 80°, medium risk), and type III (<45°, high risk). Results The type III, which is vulnerable to skull base damage, accounted for 11.7% of thestudy subjects. The Gera angle in females (64.0°±12.3°) was greater than that in males (61.3°±14.0°), showing a significant gender difference ( p=0.015). Although there was no differencebetween the left and the right side of the Gera angle ( p=0.155), there was a significant differ-ence between the left and the right side in the Gera classification ( p<0.001). Age and the Geraangle showed a negative correlation (r=- 0.116 , p=0.005). Conclusion The type III of the Gera classification was observed in 11.7% of the total studygroup. For the type III, extra care is required during ESS.

Development of MnCo-based prussian blue analogue for high-performance lithium ion battery

손상준,염경석,이영우 한국공업화학회 2023 한국공업화학회 연구논문 초록집 Vol.2023 No.0

만성 엉덩관절 통증 환자에게 슬라이더를 이용한 원 레그 스쿼트가 엉덩관절 근력 및 Q각에 미치는 영향

손상준,김원득,문기영,박동천,정광일,정세연,최원준,박동환 한국신경근육물리치료학회 2023 한국신경근육재활학회지 Vol.13 No.2

This study aimed to identify the effect of one-leg squat using a slide on hip strength, and Q angle in patients with chronic hip joint pain patients. Thirty participants subjects were recruited for this study. The experimental group applied one-leg squat using a slide and performed to intervention 3 times a week, 4 weeks, 3 sets of 10 times were performed. All participants have measured hip strengths, and Q angle in before and after the intervention. After the interventions, experimental group showed greater improvement in side bridge, hip abduction, external rotation, extension strength and Q angle than in the pre-test (p<.05). This study shows that one-leg squat using a slide improved hip strengths and Q angle in patients with chronic hip joint pain. These findings suggest that the one-leg squat using a slide has a potential for benefits on hip strengths and Q angle.