실내공기에서의 젤폼오염에 대한 실험적 연구

진욱,오주형,윤엽,고영태,최우석,김의종,서진태,Jin, Uk,Oh, Joo-Hyeong,Yoon, Yup,Ko, Young-Tae,Choi, Woo-Suk,Kim, Eui-Jong,Seo, Jin-Tae 대한영상의학회 1996 대한영상의학회지 Vol.34 No.2

Purpose : To evaluate the air contamination of the gelfoam in the angio-intervention room. Materials andMethods : After exposing four groups of gelfoam(group A1 : gelfoam fragment, group A2 : gelfoam fragment+ saline +contrast media, group B1 : gelfoam powder, group B2 : gelfoam powder + saline + contrast media) to air in theangio-intervention room, we inoculated gelfoam in each group to 30 agar plates each at every fifteen minutes forone hour with aseptic cotton buds. Cultivating them in the incubator for one day, we evaluated the growth ofbacteria or fungus. Results : Out of 480 inoculated agar plates, the growth of coagulase(-) staphylococci wasvisible in 14 ; in group A1, two at 30 minutes, three at 45 minutes, and four at 60 minutes ; in group A2, one at45 minutes and two at 60 minutes ; in group B1 and B2, one each at 45 minutes. The stastical analysis on bacterialcontamination according to time sequence and group revealed no significance(p〉0.05). Conclusions : If gelfoam isexposed to room air for less than 30 minutes, it is possible to reduce contamination by air-borne bacteria. Sincecoagulase-negative Staphylococci resistant to commonly used antibiotics, it is ideal to reduce exposure of gelfoamto room air for less than 30 minutes.

급성 전방십자인대 파열:자기공명영상을 이용한 파열위치와 정도의 분석

진욱,류경남,김의종,윤엽,안진환,Jin, Uk,Ryu, Kyung-Nam,Kim, Eui-Jong,Yoon, Yup,Ahn, Jin-Whan 대한영상의학회 1995 대한영상의학회지 Vol.32 No.5

Purpose : To evaluate the sensitivity of MR imaging in determining tear sites and degrees in acute anteriorcruciate ligament tear. Materials and Methods : MR imagings were undertaken in 19 patients who had trauma on theirknee joints. All imaging studies were performed within 2 weeks after trauma and compared with operative findings.The degrees of ligament tear were divided into complete and incomplete, and sites of tears were divided intosuperior, middle and inferior portions. MR findings were compared with operative findings. Results : There were 14cases of complete ligament tear and 5 cases of partial ligament tear. We could diagnose correctly in all 14 caseswith complete tear and in 3 of 5 cases with partial tear. The tear sites were correctly predicted in 10 of 14cases with complete tear(71%) and 1 of 5 cases with partial tear(20%). In complete tears, MR findings weretransversely or obliquely coursed band-like high signal intensity within the ACL or abrupt switch over to asindistinct signal intensity. In partial tears, the tear sites could not be evaluated mostly and the tears appearedas linear low signal intensity lesions in posterolateral bundles of ACL. Conclusions : MR revealed highersensitivity in determining the degree and sites of ACL tear in complete tear as compared with partial tear.

대퇴골두 무혈성괴사의 자기공명영상 : 예후판정 요소의 평가

진욱,류경남,유명철,윤엽,Jin, Uk,Ryu, Kyung-Nam,Yoo, Myung-Chul,Yoon, Yup 대한영상의학회 1994 대한영상의학회지 Vol.31 No.1

경추전방고정술후의 자기공명영상소견

진욱,최우석,오주형,김의종,윤엽,Jin, Uk,Choi, Woo-Suk,Oh, Joo-Hyeong,Kim, Eui-Jong,Yoon, Yup 대한영상의학회 1996 대한영상의학회지 Vol.34 No.2

Purpose : This study was conducted to describe the postopertive MRI findings with contrast enhancementfollowing anterior cervical fusion(ACF). Materials and Methods : Thirteen patients after anterior cervical fusionsfor disc herniation or traumatic injury were studied with MRI 1 month to 10 months after operation. MRI findingswere analysed with attention to the remained vertebral body, disc material, retropharyngeal soft tissue, graftedbone fragment, and biological orthopedic prosthesis(BOP). Results : In 8\13 cases(62%), enhancement of theretropharyngeal soft tissue was seen with good demarcation between soft tissue and surrounding vertebra or disc.In 9\13 cases(69%), grafted bone or BOP was well defined by intersurface with low signal intensity. In 4 cases ofACF with bone graft, 2 cases(50%) showed heterogeneous or homogeneous enhancement of grafted bone fragments.Remained vertebral bodies and discs showed enhancements in 8\13 cases(62%). Conclusion : Postoperative MR findingsafter ACF included good margination of enhanced retropharyngeal soft tissue, grafted bone, and remained vertebralbodies/discs. The MRI could be a useful study to differentiate findings after ACF from posoperative inflammationssuch as spondylitis or discitis, and be a good imaging modality for follow up of grafted bony fragment or BOP.

비전형적인 간 혈관근지방종:CT, MR 소견:1예보고

김학수,진욱,김형식,조현이,Kim, Hak-Su,Jin, Uk,Kim, Hyeong-Sik,Jo, Hyeon-Lee 대한영상의학회 2001 대한영상의학회지 Vol.45 No.4

간의 혈관근지방종은 지방성분을 포함하는 간의 드문 양성조양으로 대부분 방사선학적 검사로 지방성분을 찾을 수 있으나, 종괴내 지방성분이 적어 방사선 검사에서 지방성분을 발견하지 못할 수 있다. 저자들은 CT와 MR에서 지방성분을 발견하지 못해 다른 간내 과혈관성 종괴와의 감별이 어려웠던 비전형적인 간의 혈관근지방종 1예를 보고한다. Hepatic angiomyolipoma is a rare benign lipomatous tumor of the liver. Radiologic studies usually reveal a fat component, but since this may be minimal, such a component is not always detected. We report a case of atypical hepatic angiomyolipoma which because of the non-visualization of fat at CT and MR imaging, was difficult to differentiate from other hypervascular tumors.

슬관절내 견열골절의 자기공명영상 소견과 동반된 관절내 손상: 십자인대 파열을 중심으로

홍훈표,진욱,류경남,Hong, Hun-Pyo,Jin, Uk,Ryu, Gyeong-Nam 대한영상의학회 2003 대한영상의학회지 Vol.48 No.4

목적: 슬관절의 전방 및 후방십자인대의 견열골절 손상이 있을 때 십자인대 자체의 파열 유무를 MRI소견과 수술소견을 통해서 알아보고자 하였다. 대상과 방법 : 1997년 3월부터 2002년 5월까지 전방 혹은 후방십자인대의 견열골절 손상으로진단되었던 19예의 환자 중에서 수술을 시행한 10예를 대상으로 하였다. 남녀비는 8 :2 였고, 연령분포는 10세에서 51세사이로 평균 27. 7세 였다. 십자인대의 경골 부착부위에 견열골절이 있었던 10예에서 MRI상 전방 혹은 후방십자인대의 파열 유무를 분석하였고, 수술소견과 비교 하였다. 또한 동반된 슬관절내 다른 부위의 손상 여부를 알아보았고, 환자의 수술방법 및 추적 검사상에서의 수술결과를 알아보았다. 결과: 전방십자인대의 견열골절 손상이 있었던 7예 중 인대의 부분파열이 5예, 완전파열이 1예로 진단되었고, MRI소견과 수술소견이 일치하였다. 후방십자인대의 견열골절 손상이 있었던 3예 모두가 MRI상에서 인대의 부분파열로 진단되었고, 수술소견도 일치하였다. 6예에서 슬관절내 동반된 다른 구조물의 손상이 없었고, 내측반월상연골 파열, 외측반월상연골 파열, 후방십자인대 및 내측측부인대 파열, 오금인대 파열이 각각 1예씩 동반되어 있었다. 결론: 전방 및 후방십자인대의 견열골절이 있었던 대부분의 예에서 십자인대의 부분파열 및 완전파열을 동반하였다. 수술이나 관절경 상에서 간과할 수 있는 인대자체의 손상을 MRI상에서 진단해 내는 것이 전방 및 후방십자인대의 견열골절 영상분석에 도움을 줄 것으로 생각된다. Purpose: To determine the presence of cruciate ligament tears following avulsion injuries involving the ACL and PCL, and to correlate the findings with those of surgery. Materials and Methods: Between March 1997 and May 2002, avulsion injury involving the ACL or PCL was diagnosed in 19 patients. Ten of these [8 males and 2 females aged 10-51 (avergae, 27.7) years] were included in this study. We assessed the presence of cruciate ligament tears at MR imaging, correlating the findings with those of surgery. Associated intra-articular injuries, treatment methods and follow-up results were also evaluated. Results: Among Seven patients with ACL avulsion injury, this was assessed at MR imaging as complete tear (n=1), partial tear (n=5), or intact (n=1), while all MR images of PCL avulsion injury (n=3) showed that this was partial tear. All imaging findings corresponded with the surgical findings. In four patients there was associated knee injury involving, respectively, tears of the medial meniscus, lateral meniscus, PCL and MCL, and popliteal ligament. Conclusion: Our findings showed that with one exception, patients with avulsion injury of the ACL or PCL had suffered either a partial or complete tear. MR imaging may be useful in the diagnosis of tears of the cruciate ligament which have not been noticed at surgery or arthroscopy in avulsion injuries involving the ACL and PCL

균열선단 열림변위 {\delta}_5 R-곡선과 {\delta}_{BS} R-곡선의 비교연구

김엄기,남승훈,진욱,고성위,Kim, Eom-Gi,Nam, Seung-Hun,Jin, Uk,Go, Seong-Wi 대한기계학회 2000 大韓機械學會論文集A Vol.24 No.3

Since the examination of CTOD problem revealed that the discrepancy among CTOD's was a matte., of definition, the relationships among parameters based on different definitions have been studied Particularly, the relationship between $\sigma$BS R-curve based on BS 7448 and R-curve based on the recently introduced $\sigma$5 parameter was investigated in this research. For the comparison, compact tension specimens of used 1Cr-0.5Mo steel, heat treated 1Cr-0.5Mo steel to mimic the new one, A12024-T6, and A12024-T351 were prepared and tested. Consequently, the relationship between $\sigma$5 and $\sigma$BS R-curves for tested materials were established by shifting the rotational center which could determined by rotation factor and ligament size.

Focal Sparing in Fatty Liver: Mimicking Hypervascular Tumor on Gadolinium-Enhanced Opposed-Phase Gradient-Echo Images

김학수,김형식,진욱,Kim, Hak-Su,Kim, Hyeong-Sik,Jin, Uk The Korean Radiological Society 2001 대한영상의학회지 Vol.45 No.6

역위상 경사에코(opposed-phase gradient-echo)를 이용한 조영증강 자기공명영상에서 주위 지방간의 역설적(paradoxical) 신호강도 감소로 인해 지방간의 국소비침범(focal sparing)이 균질한 고신호 강도로 보여 과혈관성 종괴와 유사하게 보였던 1 예를 보고한다. We describe the magnetic resonance imaging findings in a case of focal sparing in fatty liver that showed homogeneous hyperintensity on gadolinium-enhanced opposed-phase gradient-echo images and mimicked a hypervascular mass due to paradoxical suppression of signal intensity of surrounding liver parenchyma with fatty infiltration.

복부 둔상에 의한 장간막 손상 환자의 평가에서 복부단층촬영의 가치

노기철 ( Ki Cheul Noh ),김진주 ( Jin Joo Kim ),정진호 ( Jin Ho Jung ),임용수 ( Yong Su Lim ),양혁준 ( Hyuk Jun Yang ),이근 ( Keun Lee ),진욱 ( Uk Jin ),박철희 ( Cheul Hee Park ) 대한외상학회 2004 大韓外傷學會誌 Vol.17 No.2

Background: Contrast-enhanced Abdominopelvic Computed Tomography(CT) is widely used for diagnosing abdominal injuries after blunt trauma. The purpose of this retrospective study is to classify the contrast-enhanced Abdominopelvic CT finding of mesenteric injuries after blunt abdominal trauma and assess of CT finding on clinical management. Methods: Between January 2000 and December 2003, 607 consecutive spiral abdomonopelvic CT examinations were performed in the ER of Gil medical center after blunt abdominal trauma. CT represented mesenteric injuries : bowel wall thickening or hematoma, mesenteric haziness or fatty infiltration, confined fluid or hematoma within mesenteric folds. We classified patients into 5 Grade by the hematoma size on CT scans : Grade I(None, 0 mm), II(Minimal, ≤10 mm), III(Small, 11~30mm), IV(Moderate, 31~60 mm), V(Large, ≥61 mm). Results: On the basis of the CT findings, 42 of the 607 patients were selected. 18 (42.9%) of 42 patients were classified as having grade I, II, III (≤30 mm) and 24 (57.1%) of 42 patients as having grade IV, V(≥31 mm). Of the 18 patients with grade I, II, III, 16(88.9%) were managed conservatively, while 2(11.1%) underwent surgery. of the 24 patients with grade IV, V injuries, 20(83.3%) were treated surgically and 4(16.7%) patients were managed conservatively. Conclusions: It is sufficient to treat of grade I, II, III mesenteric injuries by conservative management. It should be considered emergency operation to treatment of grade IV, V mesenteric injuries. (p<0.001) There were no relations between grading and initial systolic blood pressure, initial blood pressure and operation.