추이지앤(崔健) 록음악의 문화위치와 문화실천

안영은(安榮銀) 한국중어중문학회 2009 中語中文學 Vol.44 No.-

유방의 비정형 관상증식증: 탄성초음파검사를 이용하여 악성으로의 등급상향을 예측할 수 있는가?

안영이,김성헌,강봉주,이아원,송병주 대한영상의학회 2011 대한영상의학회지 Vol.64 No.4

Purpose: To evaluate whether the sonoelastographic features of atypical ductal hyperplasia (ADH) can be used to predict an upgrade to malignancy. Materials and Methods: Conventional US and sonoelastographic images were available in 17 women with 18 ADH lesions diagnosed by sonographically guided core needle biopsy. Conventional US findings were analyzed according to the Breast Imaging Reporting and Data System classification. Elastographic images were classified into 5 elasticity scores according to the ITOH classification. In addition, the strain ratio between the mass and surrounding fat tissue as well as the mammographic features were reviewed. All lesions underwent subsequent surgical excision and a correlation was found for sonoelastographic and conventional US findings with pathologic results. Results: Of the 18 ADH lesions that underwent surgical excision, four were found to be malignant (underestimation rate of 22.2%). Moreover, there was no significant difference in elasticity score (p=0.054) and strain ratio (p=0.375) between atypical ductal hyperplasia and lesions upgraded to malignancy on elastography. A mass with microcalcifications on mammography had a significantly higher association with malignancy and microcalcifications, as opposed to the absence of a mass, which was in all cases, benign (p=0.036). Conclusion: Sonoelastography may not be a helpful indicator for the differentiation of atypical ductal hyperplasia from malignant lesions. However, a correlation with mammographic features provides insight for predicting malignancy. 목적: 탄성초음파 영상을 사용하여 비정형 관상증식증의 악성종양으로의 등급상향의 위험도를 예측할 수 있는지 알아보고자 하였다. 대상과 방법: 고식적 초음파와 탄성초음파를 모두 시행하였으며 추후 수술적 제거를 한 총 17명의 환자, 18예를 대상으로 고식적 초음파와 탄성초음파 소견을 후향적으로 분석하였다. 고식적 초음파 소견은 BI-RADS 범주에 따라 분석하였으며, 탄성초음파에서는 Itoh의 분류에 따른 탄성점수와 변형률을 분석하였다. 이중 유방촬영술을 시행하였던 16예의 유방촬영술 소견을 후향적으로 분석하였다. 결과: 수술적 절제를 통해 총 4예에서 악성으로 등급상향 되었으며, 저평가율은 22.2%였다. 악성으로 등급상향 된 군과 그렇지 않은 군 간의 초음파 BI-RADS 범주와 탄성초음파에서의 탄성점수(p=0.054)와 변형률(p=0.375)은 통계학적으로 유의한 차이는 없었다. 유방촬영술에서 종괴와 미세석회화가 함께 있는 경우 악성으로 등급상향 되었으며, 미세석회화만 있는 경우는 양성이었고 모두 통계적으로 의의가 있었다(p=0.036). 결론: 탄성초음파 자체로는 비정형 관상증식증의 악성으로의 등급상향 위험도를 예측할 수 없지만, 유방촬영술 결과를 함께 해석한다면 도움이 될 수 있다.

Treatment Response Evaluation of Breast Cancer after Neoadjuvant Chemotherapy and Usefulness of the Imaging Parameters of MRI and PET/CT

안영이,김성헌,강봉주,이아원 대한의학회 2015 Journal of Korean medical science Vol.30 No.6

This study was aimed to evaluate the ability of imaging parameters measured on dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI), diffusion-weighted MRI (DWI) and positron emission tomography/computed tomography (PET/CT) to serve as response markers in breast cancer after neoadjuvant chemotherapy (NAC). In 20 patients with breast cancer, DCE-MRI and DWI using a 3 T scanner and PET/CT were performed before and after NAC. DCE-MRI was analyzed using an automatic computer-aided detection program (MRCAD). The response imaging parameters were compared with the pathologic response. The areas under the curve (AUCs) for DCE-MRI using MR-CAD analysis, DWI and PET/CT were 0.77, 0.59 and 0.76, respectively. The combination of all parameters measured by MRCAD showed the highest diagnostic performance and accuracy (AUC = 0.77, accuracy = 90%). The combined use of the parameters of PET/CT with DCE-MRI or DWI showed a trend toward improved specificity and negative predictive value (100%, 100%, accuracy = 87.5%). The use of DCE-MRI using MR-CAD parameters indicated better diagnostic performance in predicting the final pathological response compared with DWI and PET/CT, although no statistically significant difference was observed. The combined use of PET/CT with DCE-MRI or DWI may improve the specificity for predicting a pathological response.

Diffuse Infiltrative Lesion of the Breast: Clinical and Radiologic Features

안영이,김성헌,차은숙,김현숙,강봉주,박창숙,정나영,황인용,윤수경 대한영상의학회 2011 Korean Journal of Radiology Vol.12 No.1

The purpose of this paper is to show the clinical and radiologic features of a variety of diffuse, infi ltrative breast lesions, as well to review the relevant literature. Radiologists must be familiar with the various conditions that can diffusely involve the breast, including normal physiologic changes, benign disease and malignant neoplasm.

Response Evaluation to Neoadjuvant Chemotherapy in Advanced Breast Cancer: Comparison of MRI and Positron Emission Tomography/CT (RECIST 1.1 versus PERCIST 1.0)

안영이,김성헌,박영하 대한영상의학회 2014 대한영상의학회지 Vol.71 No.2

Purpose: The aim of this study was to compare the diagnostic performances between the Response Evaluation Criteria in Solid Tumors version 1.1 (RECIST 1.1) criteria on dynamic contrast enhanced magnetic resonance imaging (DCE-MRI) and positron emission tomography Response Evaluation Criteria in Solid Tumors version 1.0 (PERCIST 1.0) criteria on positron emission tomography/CT (PET/CT) in evaluating the treatment response of neoadjuvant chemotherapy (NAC) in breast cancer patients. Materials and Methods: We compared MRI and PET/CT in the assessment of tumor response after NAC with the pathological response as the standard reference in 54 breast cancer patients. The tumor response was assessed by using the RECIST 1.1 criteria on DCE-MRI and PERCIST 1.0 criteria on PET/CT. The diagnostic performance of RECIST 1.1 and PERCIST 1.0 criteria was statistically analyzed and compared by receiver operating characteristic (ROC) analysis. Results: There were 21 responders and 33 non-responders according to the pathology. The discordant rate with pathological response was 37.0% for RECIST 1.1 and 55.6% for PERCIST 1.0. Twenty six patients (48.1%) were classified as responders in both MRI and PET/CT, but the final pathology showed non-response. In the ROC curve, the area under the curves (AUC) was 0.89 for RECIST 1.1 and 0.79 for PERCIST 1.0 (p < 0.001). Conclusion: The RECIST 1.1 criteria on MRI showed the better diagnostic performance than PERCIST 1.0 criteria on PET/CT for the response assessment of breast cancer after NAC, although there was no statistically significant difference between both (p = 0.15).

Pleomorphic Carcinoma with the Air-Crescent and CT Halo Signs: A Case Report

안영이,박현진,김기준,유진영,조규도,백준현 대한영상의학회 2010 대한영상의학회지 Vol.62 No.2

A pulmonary pleomorphic carcinoma is a rare, poorly differentiated, primary malignancy. We report an atypical manifestation of this rare tumor, with the air crescent and CT halo signs.

Synovial Chondrosarcoma in the Hand and Wrist: A Case Report

안영이,김지영,강석진,강용구,백준현 대한영상의학회 2010 대한영상의학회지 Vol.62 No.1

Synovial chondrosarcoma is extremely rare and arises de novo or from malignant transformation of synovial chondromatosis. It commonly involves large joints, such as the knee or hip. Here, we present an unusual case of synovial chondrosarcoma from synovial chondromatosis in the hand and wrist, clearly demonstrating the characteristic findings on plain radiograph and MR imaging.

사는 이야기

안영이 향토문학연구회 2008 향토문학연구 Vol.11 No.-

자망어구용 코팅발돌의 개발

안영일(Young-Il AN) 한국수산해양교육학회 2010 水産海洋敎育硏究 Vol.22 No.4

The ceramic contained paint was made to replace the lead sinker for gill-net with coated lead sinker. The ceramic contained paints were coated in various conditions on the lead sinker with 19g of weight and the optimal coating condition was studied. The adaptability of the coated lead sinker was checked through the anti durability test and fishing operation with gill-net. The case of Main material 70 wt% + Urethane thinner 30 wt% (Main material 700 ㎖ + Thinner 300 ㎖)” showed the best in the coating characteristics depending on the combination ratio of the ceramic paint contained. The coated lead sinker dried at 100℃ inside oven was superior to the drying in the room temperature in its surface glossiness and anti durability and faster drying time than the one dried in normal temperature. The quadruple layers of coating on lead sinker with 4 times of dipping and drying application showed the super anti durability in the coating characteristics depending on the frequency of dipping. When press is applied to the coated lead sinker, the coated layer is not detached from the sinker. In addition, the coated lead sinker was not damaged or peeled at the fishing operation about 2 months in various depths within 50m and by the materials at the bottom (sand, stone and gravel stone) and it was in good condition.

시각 현상의 특성을 이용한 영상의 질 향상에 관한 연구

안영아(Young-Ah Ahn),김태윤(Tai-Yun Kim) 한국정보과학회 1995 한국정보과학회 학술발표논문집 Vol.22 No.2A

이미지 처리 시스템에서 사람이 좀 더 쉽게 대상을 판별하며 눈에 거슬리지 않는 좋은 이미지를 창출하는 것은 매우 중요한 일이다. 좋은 이미지를 판별하는 것은 매우 주관적일 뿐만 아니라 주어진 응용 분야에 강하게 의존한다. 영상은 인간의 시각을 통하여 인지되기 때문에 시각 현상을 전제하지 않는 영상의 향상은 근본적으로 기계에 촛점을 맞춘 것이라 할 수 없다. 그러나 시각 현상의 정보는 실제로 응용에 효과적으로 쓰이기 보다는 상호 별개의 현상들로 나열한 지식의 형태이기에 이론적인 체계가 부족하여 적용에 어려움이 있다. 본 연구에서는 인간의 시각 현상을 영상 향상에 이용하고자 하였으며 영상의 대비도에 변화를 주어 이미지를 향상시키는 방법 중의 하나인 히스토그램 평활화 기법에 두 가지 시각 현상 정보인 밝음 인지 특성과 마하 밴드 패턴 효과를 주어 처리하였다. 그 결과로 밝음 인지 특성은 좀 더 자연스러운 이미지를 특히 어두운 부분의 변화를 인지할 수 있었고 마하 밴드 패턴 특성은 눈의 피로가 적은 이미지를 생성할 수 있었다.