“Aorta-in-Aorta”Sign on Chest Radiograph Representing Enlarged Left Superior Intercostal and Hemiazygos Veins

성연미,이경수,김태성 대한영상의학회 2002 대한영상의학회지 Vol.46 No.5

We recently encountered a patient with membranous obstruction of the inferior vena cava in whom the left superior intercostal and hemiazygos veins were dilated. At chest radiography, the dilation simulated the presence of a second aortic knob and descending thoracic aorta lateral to the originals, and an“ aorta-in-aorta”appearance was thus created. 저자들은 최근 57세 여자 환자의 단순흉부촬영에서 기존의 대동맥융기(aortic knob)와 하행흉부대동맥 바깥쪽에서 또 다른 대동맥 음영을 경험하였다. 이는 하대정맥의 막성폐쇄(membranous obstruction)에 의한 측부혈행 (collateral pathway)으로 확장된 좌상늑간정맥(left superior intercostal vein)과 반홀정맥(hemiazygos vein)이 대동맥 음영을 흉내낸 것으로“Aorta-in-Aorta”징후로 명명하고 증례 보고하고자 한다.

폐동맥 혈전색전증의 영상과 해석

성연미,이경수,Seong, Yeon-Mi,Lee, Gyeong-Su 한국건강관리협회 2004 한국건강관리협회지 Vol.2 No.1

We list the imaging modalities currently used to diagnose pulmonary thromboem-bolism and describe the pertinent imaging features of acute and chronic pulmonary thromboembolism.

Selective Intra-Arterial Calcium Stimulation with Hepatic Venous Sampling for Preoperative Localization of Insulinomas

성연미,YoungSooDo,SungWookShin,WeiChiangLiu,SungWookChoo,In-WookChoo,Moon-KyuLee 대한영상의학회 2003 Korean Journal of Radiology Vol.4 No.2

Objective: To determine the value of selective intra-arterial calcium stimulation with hepatic venous sampling using serum insulin and C-peptide gradients for the preoperative localization of insulinomas. Materials and Methods: Seven consecutive patients [three men and four women aged 15 77 (mean, 42.7) years] with hypoglycemia underwent selective intra-arterial calcium stimulation in conjunction with hepatic venous sampling. Insulin gradients were calculated by an individual blinded to all other preoperative imaging studies and operative findings. In all patients except one, C-peptide gradients were also analyzed. The results were compared with the preoperative findings of ultrasonography, computed tomography, arteriography and endoscopic ultrasonography, as well as with the intraoperative findings of ultrasonography and palpation at surgery. Results: Eight insulinomas (mean diameter, 12.5 mm) were diagnosed after surgery. In six patients, the calcium stimulation test with insulin gradients allowed accurate localization of the pathologic source of insulin secretion. Both C-peptide and insulin gradients substantially increased diagnostic accuracy. In one patient, C-peptide gradients were more helpful than insulin gradients for tumor localization. Conclusion: Selective intra-arterial calcium stimulation with hepatic venous sampling is a highly accurate and safe method for the preoperative localization of insulinomas. Additional C-peptide gradients seem to be helpful in assessing tumor location, but further study is needed.

Long-term Results of Percutaneous Ethanol Injection for the Treatment of Hepatocellular Carcinoma in Korea

성연미,최동일,임효근,이원재,김승훈,Min Ju Kim,백승운,유병철,고광철,이준혁,최문석 대한영상의학회 2006 Korean Journal of Radiology Vol.7 No.3

Objective: To evaluate the long-term follow-up results of percutaneous ethanol injection (PEI) for the treatment of hepatocellular carcinoma (HCC) in Korea. Materials and Methods: Sixty-eight nodular HCCs initially detected in 64 patients, were subjected to US-guided PEI as a first-line treatment. Long-term survival rates, local tumor progression rates, and complications were evaluated, as were the influences of tumor size and Child-Pugh class on these variables. Results: No major complications occurred. The overall survival rates of the 64 patients at three and five years were 71% and 39%, and their cancer-free survival rates were 22% and 15%, respectively. The overall survival rate of patients with a small HCC ( 2 cm) was significantly higher (p = 0.014) than that of patients with a medium-sized HCC ( 2 cm). The overall survival rate of patients with Child- Pugh class A was significantly higher (p = 0.049) than that of patients with Child- Pugh class B. Of 59 cases with no residual tumor, local tumor progression was observed in ablation zones in 18, and this was not found to be significantly influenced by tumor size or Child-Pugh class. Conclusion: The results of our investigation of the long-term survival rates of PEI in HCC patients in Korea (a hepatitis B virus-endemic area) were consistent with those reported previously in hepatitis C endemic areas. Patients with a smaller tumor or a better liver function exhibited superior survival rates.

방송 진행자 인력 수급 상황과 교육지원

성연미 한국소통학회 2004 한국스피치커뮤니케이션학회 학술대회 자료집 Vol.2004 No.1

1,024 매트릭스 영상재건: 고해상 흉부CT에 대한 유용성

정선영,정명진,정세민,성연미,이경수 대한영상의학회 2006 대한영상의학회지 Vol.55 No.6

Purpose: We tried to evaluate whether high resolution chest CT with a 1,024 matrix has a significant advantage in image quality compared to a 512 matrix. Materials and Methods: Each set of 512 and 1024 matrix high resolution chest CT scans with both 0.625 mm and 1.25mm slice thickness were obtained from 26 patients. Seventy locations that contained twenty-four low density lesions without sharp boundary such as emphysema, and forty-six sharp linear densities such as linear fibrosis were selected; these were randomly displayed on a five mega pixel LCD monitor. All the images were masked for information concerning the matrix size and slice thickness. Two chest radiologists scored the image quality of each arrowed lesion as follows: (1) undistinguishable, (2) poorly distinguishable, (3) fairly distinguishable, (4) well visible and (5) excellently visible. The scores were compared from the the aspects of matrix size, slice thickness and the different observers by using ANOVA tests. Results: The average and standard deviation of image quality were 3.09 (±.92) for the 0.625 mm×512 matrix, 3.16 (±.84) for the 0.625 mm×1024 matrix, 2.49 (±1.02) for the 1.25 mm×512 matrix, and 2.35 (±1.02) for the 1.25 mm×1024 matrix, respectively. The image quality on both matrices of the high resolution chest CT scans with a 0.625 mm slice thickness was significantly better than that on the 1.25 mm slice thickness (p < 0.001). However, the image quality on the 1024 matrix high resolution chest CT scans was not significantly different from that on the 512 matrix high resolution chest CT scans (p = 0.678). The interobserver variation between the two observers was not significant (p = 0.691). Conclusion: We think that 1024 matrix image reconstruction for high resolution chest CT may not be clinically useful. 목적: 고해상 흉부CT에 있어 고화소(1,024×1,024 픽셀 매트릭스) 횡단면 영상이 기존(512x512 픽셀 매트릭스) 영상과 비교하여 유의한 장점이 있는지 알아보고자 하였다. 대상과 방법: 1,024 매트릭스 재건이 지원되는 장비로 고해상 흉부CT를 시행 받은 26명의 환자들로부터 512 매트릭스와 1,024 매트릭스, 그리고 0.625 mm 두께와 1.25 mm 두께로 조합된 네 가지 세트를 각각 재건하였다. 폐기종과 같은 둥글고 경계가 불분명한 저음영 병소 24곳, 선형섬유화와 같은 선형의 경계가 명확한 고음영 병소 46곳으로 총 70곳의 병소를 선택하여 5메가 픽셀 LCD 모니터에서 전시하였다. 모든 영상은 매트릭스 크기나 절편 두께에 대한 정보를 제거하였으며, 세트의 순서는 무작위로 하였다. 두 명의 흉부 영상의학과 전문의가 각 영상에서 표기된 병소를 평가하였으며 다음과 같은 5단계로 분류하였다: (1) 보이지 않음, (2) 거의 보이지 않음, (3) 어느 정도 보임, (4) 잘 보임, (5) 아주 잘 보임. 각 병소에 대해 평가한 결과를 512 대 1024 매트릭스, 0.625 mm 대 1.25 mm 두께의 2×2 조합에 대해 분산분석(analysis of variance test)으로 비교하였다. 결과: 병변을 평가한 평균과 표준편차는 0.625 mm 두께×512 매트릭스에 대하여 3.09(±.92), 0.625 mm 두께×1024 매트릭스에 대하여 3.16(± .84), 1.25 mm 두께×512 매트릭스에 대하여 2.49(±1.02), 1.25 mm 두께×1024 매트릭스에 대하여 2.35(±1.02)였다. 영상 두께에 따른 점수의 차이는 유의하였으나(p < 0.001), 매트릭스 크기에 따라서는 점수에 유의한 차이가 없었다(p = .678). 두 명의 관찰자간 상이도(interobserver variation)는 유의하지 않았다(p =0.691). 결론: 고해상 흉부CT를 목적으로 한 1,024 매트릭스 재건 영상은 임상적으로 이득이 없는 것으로 생각한다.

A Case of Primary Subpleural Pulmonary Microcystic Myxoma Coincidentally Occurred with Pulmonary Adenocarcinoma

안정석,김나래,하승연,김건우,박국양,성연미 대한병리학회 2015 Journal of Pathology and Translational Medicine Vol.49 No.3

Cardiac Metastasis of Leiomyosarcoma Complicated with Complete Atrio-ventricular Block and Ventricular Tachycardia

박예민,신재욱,김민수,강웅철,문정근,정욱진,성연미 대한심장학회 2016 Korean Circulation Journal Vol.46 No.2

We described a case of a 54-year-old male who presented with dizziness and dyspnea due to cardiac metastasis of leiomyosarcoma. Cardiac metastasis of leiomyosarcoma caused both bradyarrhythmia and tachyarrhythmia in the patient. He was treated with implantation of a permanent pacemaker for management of complete atrio-ventricular block and anti-arrhythmic drug that suppressed ventricular tachycardia successfully

Usefulness of Multidetector-row CT in the Evaluation of Reperfused Myocardial Infarction in a Rabbit Model

Jong Min Park,최연현,Samuel Chang,성연미,Seok Seon Kang,Min Joo Kim,한부경,최상희 대한영상의학회 2004 Korean Journal of Radiology Vol.5 No.1

The application of MRI to the diagnosis of ischemic heart disease has been extensively studied (1-3). This technique provides excellent tissue contrast between the normal and infarct tissue, especially on T2-weighted and contrast-enhanced T1-weighted images, as well as functional information. However, specific pulse sequences and hardware are required for cardiac imaging, and this makes MRI more time-consuming and expensive than CT. In emergency situations, patients with acute myocardial infarction may undergo CT, since their chest pain can mimic the symptoms of other diseases such as aortic dissection and pulmonary thromboembolism. Recently, high-speed CT scanners with multiple detector-rows have come to play a more important role in cardiac imaging than before. Although, several experimental studies have been published on the use of conventional CT in the evaluation of myocardial infarction (4-7), little information is available on the application of this new CT technology to the evaluation of acute myocardial infarction. A few clinical cases have been reported which included the CT findings of acute myocardial infarction (8, 9). This study was performed to test the reliability and usefulness of multidetector-row CT in the evaluation of myocardial infarction and reperfusion. This is one of the first attempts to evaluate myocardial ischemia and reperfusion using multidetector-row CT in an experimental setting.

The Relationship between Coronary Artery Calcification and Renal Function in Nondialyzed Patients

장제현,김세중,성지윤,정지용,이현희,정우경,성연미 연세대학교의과대학 2012 Yonsei medical journal Vol.53 No.4

Purpose: Coronary artery calcification (CAC) has been described in individuals with chronic kidney disease (CKD), and its presence is associated with an increased risk of cardiovascular death. However, it is unclear whether there is an independent relationship between renal function and CAC. Therefore, we evaluated the association between renal function and CAC. Materials and Methods: We retrospectively reviewed 870 Korean patients who had undergone computed tomographic coronary angiography. The glomerular filtration rate (GFR) was estimated using the Modification of Diet in Renal Disease study formula with an ethnic factor for the Korean population. The CKD stages were classified using estimated GFR (eGFR) and proteinuria. Results: The mean age of the participants was 56.8±11.8 years, and the mean eGFR was 89.4±16.5 mL/min/1.73 m2. Hypertension and diabetes were noted in 41.5 and 17.0% of patients, respectively. There were 584 and 286 patients with no CAC and with CAC, respectively. After adjusting for confounding variables, late stage CKD was associated with CAC [odds ratio (OR) 2.80, 95% confidence interval (CI) 1.05-7.46]. However, early stage CKD was not associated with CAC (OR 1.61, 95% CI 0.92-2.82). Diabetes was an independent risk factor of CAC (OR 2.06, 95% CI 1.36-3.13). There was no significant association between proteinuria and CAC (OR 1.65, 95% CI 0.96-2.85). Conclusion: CAC is related to late stage CKD in nondialyzed patients. These findings emphasize that individuals with CAC should be considered a high-risk population for decreased renal function.