특발성폐섬유증 환자의 종격동 및 흉막외 지방 비후: 고해상전산화단층촬영을 이용한 정량화 및 정상인과의 비교

손규리,이현주,임근영,이창현,구진모,임정기 대한영상의학회 2004 대한영상의학회지 Vol.51 No.6

Diagnostic Value of CT for the Detection of Cervical Lymph Node Metastases in Papillary Thyroid Carcinoma

손규리,장기현,나동규 대한영상의학회 2009 대한영상의학회지 Vol.60 No.6

Purpose: To determine the diagnostic accuracy of CT for the detection of cervical lymph node metastases in patients with papillary thyroid carcinoma (PTC). Materials and Methods: Two hundred twelve consecutive patients with surgically proven PTC were included in this study. CT images were retrospectively evaluated to determine the presence of a node metastasis using morphologic CT criteria (at least one of the following: strong nodal enhancement without hilar vessel enhancement, heterogeneous enhancement, calcification, and cystic change). The diagnostic accuracy of CT for the diagnosis of a metastatic lymph node was assessed using a level-bylevel analysis. Results: The accuracy of the CT finding for strong nodal enhancement was greater than the other morphologic CT criteria (81.6% and 74.5-78.5%, respectively). The sensitivity, specificity, and accuracy were 64.4%, 91.4%, and 84.3% by the morphologic CT criteria, and were 34.6%, 93.9%, and 78.2% by size criteria, respectively. Conclusion: The morphologic CT criteria are more accurate than the size criteria in the detection of cervical lymph node metastases in patients with papillary thyroid carcinoma; and, strong nodal enhancement on a CT scan is the most important factor for its diagnostic accuracy.

조직지원인식이 인도차이나 지역 외국인 근로자의 직무적응과 문화적응에 미치는 영향: 상사신뢰의 조절효과

손규일,윤동열 국제지역학회 2020 국제지역연구 Vol.24 No.1

The purpose of this study is to identify the effect of perceived organizational support on the adaptation of E-9 foreign workers with the moderating effects of trust in supervisor in relation to the effect of perceived organizational support on the adaptation of E-9 foreign workers. Previous researches at home and abroad have continued to study the adaptation factors of foreign workers to domestic companies, but the study on the effect of the perceived trust level of Korean supervisor on the adaptation and cultural adaptation of foreign workers was insufficient. Research that pays attention to the role played is difficult to find. To verify this empirically, 212 questionnaires are excluded from the 389 questionnaires collected from Thai, Vietnamese, and Cambodian workers working in small and medium-sized manufacturing companies entering the country through the Foreign Employment Permit System. As a result of the empirical analysis, the perceived organizational support has a positive effect on the job adaptation and cultural adaptation of foreign workers. In addition, the trust in supervisor of foreign workers is found to reinforce the positive relationship between perceived organizational support, job adaptation, and cultural adaptation. Based on these results, implications for foreign workers to build trust with their supervisors to strengthen their adaptation in a new working environment are discussed and suggestions for future research are presented. 본 연구에서는 조직지원인식이 인도차이나 지역 외국인 근로자의 적응에 미치는 영향과 상사신뢰의 조절효과를 검증하고자 하였다. 기존 국내외 선행 연구에서도 외국인 근로자들의 국내기업 적응요인에 관한 연구는 계속되어 왔으나 한국인 상사에 대한 인식된 신뢰수준이 외국인 근로자들의 직무적응 및 문화적응에 미치는 영향에 대해서 연구한 내용은 부족한 상황이었다. 이를 실증적으로 검증하기 위해, 외국인 고용허가제를 통해 입국하여 중소제조업체에 근무하고 있는 태국, 베트남, 캄보디아 등 인도차이나 지역 외국인 근로자들로부터 수집된 389부의 설문지 중 불성실한 설문지를 제외한 212부의 설문지를 분석에 활용하였다. 실증분석 결과, 조직지원인식은 외국인 근로자의 직무적응과 문화적응에 정(+)의 영향을 미치는 것으로 나타났다. 그리고 외국인 근로자의 상사신뢰는 조직지원인식과 직무적응 및 문화적응의 정(+)의 관계를 강화하는 것으로 확인되었다. 이러한 연구결과를 바탕으로 E-9 외국인 근로자가 새로운 근무환경에서 적응을 강화하기 위한 상사와의 신뢰 구축방안 등에 대한 시사점을 논의하고, 향후 연구방안을 제시하였다.

조직지원인식이 비숙련 제조업 외국인 근로자의 역할 내·외 성과에 미치는 영향: 외국인 근로자 적응과 상사신뢰의 조절된 매개효과

손규일 ( Kyu-il Sohn ),윤동열 ( Dong-yeol Yoon ) 국제지역학회 2020 국제지역연구 Vol.24 No.4

본 연구에서는 조직지원인식이 국내 외국인 근로자의 역할 내 성과와 역할 외 성과에 미치는 영향과의 관계에서 외국인 근로자 적응의 매개효과, 상사신뢰의 조절효과와 조절된 매개효과를 검증하고자 하였다. 이를 위해서 국내 중소제조업체에 근무하고 있는 태국·베트남·캄보디아 외국인 근로자 212명을 대상으로 조사한 결과는 다음과 같다. 첫째, 조직지원인식은 외국인 근로자의 역할 내 성과와 역할 외 성과에 긍정적인 영향을 미치는 것으로 나타났다. 둘째, 조직지원인식은 외국인 근로자의 적응에 긍정적인 영향을 미치는 것으로 확인되었다. 셋째, 외국인 근로자의 적응은 역할 내 성과와 역할 외 성과에 긍정적인 영향을 미치는 것으로 밝혀졌다. 넷째, 외국인 근로자의 적응은 조직지원인식과 역할 내 성과와 역할 외 성과와의 관계를 매개하였다. 다섯째, 외국인 근로자의 상사신뢰는 조직지원인식과 적응의 긍정적인 관계를 강화하는 것으로 확인되었다. 여섯째, 상사신뢰 수준이 높아질수록 외국인 근로자의 조직지원인식이 적응을 통해 역할 내 성과와 역할 외 성과를 높일 수 있음을 확인하였다. 이러한 연구결과를 토대로 이론적 시사점과 실무적 시사점을 논의하고, 연구의 한계와 함께 향후 연구 방향을 제시하였다. The purpose of this study is to identify the mediating effect of foreign worker adaptation, the moderating effect of supervisor's trust, and the moderated-mediating effect of the perceived organizational support on foreign workers' in-role and extra-role performance. To this end, the results of a survey of 212 foreign workers in Thailand, Vietnam, and Cambodia working for small and medium-sized manufacturing companies in Korea are as follows. First, the perceived organizational support had a positive effect on the in-role and extra-role performance of foreign workers. Second, the perceived organizational support was found to have a positive effect on the adaptation of foreign workers. Third, the adaptation of foreign workers was found to have a positive effect on in-role and extra-role performance. Fourth, adaptation of foreign workers mediated the relationship between perceived organizational support and in-role performance and extra-role performance. Fifth, it was confirmed that the trust in supervisor of foreign workers reinforces the positive relationship between perceived organizational support and adaptation. Sixth, it was confirmed that the higher the level of trust in supervisor, the more the foreign workers' perceived organizational support can increase in-role performance and extra-role performance through adaptation. Based on these research results, theoretical implications and practical implications are discussed, and future research directions are suggested along with the limitations of the research.

시술 자유도를 향상시킨 볼록형 탐촉자 범용 신형 초음파 천자 가이드 장치

정성일,손규리,김영준,전혜정,박상우,조정연,김승협 대한초음파의학회 2008 ULTRASONOGRAPHY Vol.27 No.4

목적 : 새로운 형태의 초음파 천자 가이드 장치를 제작하고 수행도를 평가하고자 한다. 대상 및 방법 : 개발된 초음파 천자 가이드 장치는 유도부와 부착부로 구성되었다. 유도부는 초음파의 주사 범위내에서 최대한의 자유도를 유지할 수 있게 하였고 부착부는 대부분의 볼록형 초음파 탐촉자에 탈착가능하게 하였다. 6명의 시술자가 한천 모형내의 144개 표적물에 대하여 각각 개발된 초음파 천자 가이드 장치 (n=72)와 자유 양손 기법 (n=72)으로 시술을 시행하였고 천자 횟수 및 시술 시간을 비교하였다. 결과 : 5명의 시술자에서 자유 양손 기법보다 개발된 초음파 천자 가이드 장치를 사용한 시술시 천자 횟수와 시술 시간이 통계적으로 유의하게 감소했다 (p < 0.05). 결론 : 천자시 최대한의 자유도가 유지되고 대부분의 볼록형 초음파 탐촉자에 탈착이 가능하도록 개발된 초음파 천자 가이드 장치는 우수한 수행도를 보였다. PURPOSE : To evaluate the performance of a newly-designed ultrasound (US)-guided puncture device. MATERIALS and METHODS : A newly-designed US-guided puncture device was composed of a guide segment and an attachable segment. The guide segment allowed the needle to be placed in the plane of US view with a maximal degree of freedom, and the attachable segment was designed to attach to most convex US probes. Six operators punctured 144 targets in phantoms using either the new device (n = 72) or free-hand technique (n = 72). The number of required needle passages and the necessary procedure times were compared between the two groups. RESULTS : The number of required needle passages and the necessary procedure time were significantly reduced in five operators when the newly-designed US-guided puncture device was used (p < 0.05). CONCLUSION : A newly-designed US-guided puncture device, which allows for a maximal degree of freedom in needle placement and can attach to most convex US probes, showed good performance in our study.

CT Analysis of the Anterior Mediastinum in Idiopathic Pulmonary Fibrosis and Nonspecific Interstitial Pneumonia

이창현,이현주,손규리,전은주,임건영,구진모,임정기,허정남,송재우 대한영상의학회 2006 Korean Journal of Radiology Vol.7 No.3

Objective: We wanted to determine whether the amount and shape of theanterior mediastinal fat in the patients suffering with usual interstitial pneumonia(UIP) or nonspecific interstitial pneumonia (NSIP) was different from those of thenormal control group. Materials and Methods: We selected patients who suffered with UIP (n = 26)and NSIP (n = 26) who had undergone CT scans. Twenty-six controls wereselected from individuals with normal CT findings and normal pulmonary functiontests. All three groups (n = 78) were individually matched for age and gender. Theamounts of anterior mediastinal fat, and the retrosternal anteroposterior (AP) andtransverse dimensions of the anterior mediastinal fat were compared by one-wayanalysis of variance and Bonferroni’s test. The shapes of the anterior mediastinumwere compared using the Chi-square test. Exact logistic regressionanalysis and polychotomous logistic regression analysis were employed toassess whether the patients with NSIP or UIP had a tendency to show a convexshape of their anterior mediastinal fat. Results: The amount of anterior mediastinal fat was not different among thethree groups (p = 0.175). For the UIP patients, the retrosternal AP dimension ofthe anterior mediastinal fat was shorter (p = 0.037) and the transverse dimensionof the anterior mediastinal fat was longer (p = 0.001) than those of the normalcontrol group. For the NSIP patients, only the transverse dimension was significantlylonger than those of the normal control group (p < 0.001). The convexshape of the anterior mediastinum was predictive of NSIP (OR = 19.7,CI 3.32 , p < 0.001) and UIP (OR = 24.42, CI 4.06 , p < 0.001). Conclusion: For UIP patients, the retrosternal AP and transverse dimensionsare different from those of normal individuals, whereas the amounts of anteriormediastinal fat are similar. UIP and NSIP patients have a tendency to have aconvex shape of their anterior mediastinal fat.

In Vivo MR Imaging of Magnetically Labeled Mesenchymal Stem Cells in a Rat Model of Renal Ischemia

정성일,김승협,김효철,손규리,정세영,문우경,김회숙,최종선,문민환,성창규 대한영상의학회 2009 Korean Journal of Radiology Vol.10 No.3

Objective: This study was designed to evaluate in vivo MR imaging for the depiction of intraarterially injected superparamagnetic iron oxide (SPIO)-labeled mesenchymal stem cells (MSCs) in an experimental rat model of renal ischemia. Materials and Methods: Left renal ischemia was induced in 12 male Sprague-Dawley rats by use of the catheter lodging method. In vivo MR signal intensity variations depicted on T2*-weighted sequences were evaluated in both the left and right kidneys prior to injection (n = 2), two hours (n = 4), 15 hours (n = 2), 30 hours (n = 2) and 72 hours (n = 2) after injection of SPIO-labeled MSCs in both kidneys. Signal intensity variations were correlated with the number of Prussian blue stain-positive cells as visualized in histological specimens. Results: In an in vivo study, it was determined that there was a significant difference in signal intensity variation for both the left and right cortex (40.8 ± 4.12 and 26.4 ± 7.92, respectively) and for both the left and right medulla (23.2 ± 3.32 and 15.2 ± 3.31, respectively) until two hours after injection (p < 0.05). In addition, signal intensity variation in the left renal cortex was well correlated with the number of Prussian blue stain-positive cells per high power field (r = 0.98, p < 0.05). Conclusion: Intraarterial injected SPIO-labeled MSCs in an experimental rat model of renal ischemia can be detected with the use of in vivo MR imaging immediately after injection.

동물 폐 표본에서의 해부학적 구조물과 병리적 병변: 미세 전산화단층촬영과 세절편 다중 검출기 전산화단층촬영에서의 발견능 비교

임근영,이현주,이창현,손규리,서준범,구진모,임정기 대한영상의학회 2006 대한영상의학회지 Vol.54 No.5

Purpose: We wanted to compare the capability of micro CT and the clinically available thin-slice multi-detector row CT (MDCT) for demonstrating fine anatomic structures and pathological lesions in formalin-fixed lung specimens. Materials and Methods: The porcine lung with shark liver oil-induced lipoid pneumonia and the canine lung with pulmonary paragonimiasis were fixed by ventilating them with formalin vapor, and they were then sliced into one-centimeter thick sections. Micro CT (section thickness, 18 micrometer) and MDCT (section thickness, 0.75 mm) images were acquired in four of the lung slices of the lipoid pneumonia specimen and in five of the lung slices of the paragonimiasis specimen. On 62 pairs of micro CT and MDCT images, 169 pairs of rectangular ROIs were manually drawn in the corresponding locations. Two chest radiologists recorded the detectability of three kinds of anatomic structures (lobular core structure, interlobular septum and small bronchiolar lumen) and two kinds of pathological lesions (ground-glass opacity and consolidation) with using a fivepoint scale. The statistical comparison was performed by using the Wilcoxon signed rank test. Interobserver agreement was evaluated with kappa statistics. Results: For all observers, all the kinds of anatomic structures and pathological lesions were detected better on the micro CT images than on the MDCT images (p<0.01). Agreement was fair between two observers (κ= 0.38, p<0.001). Conclusion: The fine anatomic structures and pathological lesions of the lung were more accurately demonstrated on micro CT than on thin-slice MDCT in the inflated and fixed lung specimens. 목적: 고정된 폐 표본을 이용하여 micro-CT에서 획득한 영상과 thin-slice MDCT에서 획득한 영상의 미세한 해부학적 구조물과 병변의 발견능을 비교하고자 한다. 대상과 방법: 리포이드 폐렴이 있는 돼지 폐 절편 4개와 폐흡충증이 있는 개 폐 5절편의 영상을 micro-CT와 MDCT를 이용하여 얻었다. 각각 대응하는 micro-CT 영상과 MDCT 영상으로 이루어진 62쌍의 영상에서 169쌍의 관심영역을 지정하였다. 각각의 관심영역에 대하여 해부학적 구조물과 병변을 두 명의 흉부 방사선과 의사가 평가 하였으며 그 결과를 Wilcoxon signed rank test를 이용하여 통계적 분석을 시행하였고 kappa statistics로 두 평가자 간의 일치도를 평가하였다. 결과: 모든 해부학적 구조물과 병변에서 thin-slice MDCT보다 micro-CT의 평가 척도 평균값이 통계적으로 유의하게 높았으며 (p < 0.01) 평가자 간의 일치도는 fair 였다(κ=0.38). 결론: 고정된 폐 표본의 미세한 해부학적 구조물과 병변에 있어서 micro-CT에서의 발견능이 MDCT에 비하여 더 우월하다.

Disconnection of the Rubber Tip of Arrow-Trerotola Percutaneous Thrombolytic Device

김한면,김효철,우성민,손규리,제환준 대한영상의학회 2014 Korean Journal of Radiology Vol.15 No.2

A rubber tip disconnection of Arrow-Trerotola percutaneous thrombolytic device (PTD) may occur occasionally. We experienced 5 cases of a rubber tip disconnection among 453 mechanical thrombectomy sessions with the use of PTD. We present a report about these five cases and suggest possible causes for the occurrences.

Assessing the accuracy and reliability of ultrasonographic three-dimensional parathyroid volume measurement in a patient with secondary hyperparathyroidism: a comparison with the two-dimensional conventional method

유성혜,서상일,유인선,손규리,이영흔,서형석,이남준,설해영 대한초음파의학회 2017 ULTRASONOGRAPHY Vol.36 No.1

Purpose: The purpose of this study was to investigate the accuracy and reliability of the semiautomated ultrasonographic volume measurement tool, virtual organ computer-aided analysis (VOCAL), for measuring the volume of parathyroid glands. Methods: Volume measurements for 40 parathyroid glands were performed in patients with secondary hyperparathyroidism caused by chronic renal failure. The volume of the parathyroid glands was measured twice by experienced radiologists by two-dimensional (2D) and threedimensional (3D) methods using conventional sonograms and the VOCAL with 30° angle increments before parathyroidectomy. The specimen volume was also measured postoperatively. Intraclass correlation coefficients (ICCs) and the absolute percentage error were used for estimating the reproducibility and accuracy of the two different methods. Results: The ICC value between two measurements of the 2D method and the 3D method was 0.956 and 0.999, respectively. The mean absolute percentage error of the 2D method and the 3D VOCAL technique was 29.56% and 5.78%, respectively. For accuracy and reliability, the plots of the 3D method showed a more compact distribution than those of the 2D method on the Bland-Altman graph. Conclusion: The rotational VOCAL method for measuring the parathyroid gland is more accurate and reliable than the conventional 2D measurement. This VOCAL method could be used as a more reliable follow-up imaging modality in a patient with hyperparathyroidism.