• Title/Summary/Keyword: 디지털 유방촬영술

Search Result 20, Processing Time 0.026 seconds

Digital Mammography as a Screening Tool in Korea (국가암검진사업에서 디지털 유방촬영술의 현황과 과제)

  • Soo Yeon Song;Seri Hong;Jae Kwan Jun
    • Journal of the Korean Society of Radiology
    • /
    • v.82 no.1
    • /
    • pp.2-11
    • /
    • 2021
  • More than 4 million women undergo breast cancer (BC) screening with mammography each year in Korea. Digital mammography (DM) was introduced in 2000, and it has been reported to have a higher diagnostic accuracy than screen-film mammography (SFM) or computed radiography (CR) in women with dense breasts. According to a study using data from the National Cancer Screening Program for BC, the diagnostic accuracy of DM was higher than those of SFM and CR, regardless of age, breast density, and screening round. Currently, despite high supply rate among OECD countries, the distribution of DM equipment is approximately 35% in Korea. For quick replacement with DM, it will be necessary to improve its fee for the National Health Insurance and support an educational program for radiologists. In addition, efforts should be made to increase the accessibility of DM.

A Study on the Effectiveness of Screening for Selective Breast Cancer Using Digital Mammography Centered on General Hospital (디지털 유방촬영술을 이용한 선별적 유방암 검진의 효용성에 대한 연구(2차 병원을 중심으로))

  • Kim, Hyeon-Jin
    • Journal of the Korean Society of Radiology
    • /
    • v.15 no.2
    • /
    • pp.147-152
    • /
    • 2021
  • This study is a retrospective analysis of the results of tests at three general hospitals in Busan that perform mammography using digital mammography devices. There were 5,320 people in the study, and the results of their breast cancer screening were analyzed to verify the efficacy of breast cancer screening for digital mammography. The average age of patients who performed breast cancer screening was 57.7 years (range 30 to 87 years), and the cancer detection rate was 26, with 4.6 cases per 1,000 people. According to the cancer detection rate by risk factor in patients who conducted breast cancer screening, breast cancer was found in patients without underlying diseases more than in patients with underlying diseases. Additional ultrasound examinations show that the gastronomic rate identified is 3.6%, which is relatively very low compared to that of the Film-Screen system.

Mammography-Guided Interventional Procedure (유방촬영술 유도하 중재 시술)

  • Woo Jung Choi;Hak Hee Kim
    • Journal of the Korean Society of Radiology
    • /
    • v.84 no.2
    • /
    • pp.320-331
    • /
    • 2023
  • Mammography has been the standard screening method for breast cancer. In women with suspicious calcifications and architectural distortion identified on mammography or digital breast tomosynthesis only without detected on breast US, stereotactic biopsy and mammography-guided preoperative localization is one of the method for pathologic diagnosis. This review aims to describe the indication, contraindication, technique of stereotactic biopsy, clip placement after stereotactic biopsy, and digital breast tomosynthesis-guided stereotactic biopsy. In addition, this article reviews mammography-guided preoperative localization using a wire or non-wire device.

Implementation of a Full Field Digital Mammography (디지털 유방X-선촬영기의 구현)

  • Roh, Young-Sup;Yeo, Se-Yeon;Lee, Jae-Jun;Sohn, Surg-Won
    • Journal of the Korea Academia-Industrial cooperation Society
    • /
    • v.12 no.10
    • /
    • pp.4578-4589
    • /
    • 2011
  • The technologies of image acquisition, display, and storage of the breast have been developed in their specialized fields in recent years. The image acquisition system is a device that absorbs and stores images after examining breast tissue using X-ray. Due to the specificity and sensitivity of imaging, the early detection of breast cancer is feasible. In this paper, the current technologies for digital mammography are reviewed, and we propose a digital mammography and evaluate the performance of the implemented system.

Development of Automatic Cluster Algorithm for Microcalcification in Digital Mammography (디지털 유방영상에서 미세석회화의 자동군집화 기법 개발)

  • Choi, Seok-Yoon;Kim, Chang-Soo
    • Journal of radiological science and technology
    • /
    • v.32 no.1
    • /
    • pp.45-52
    • /
    • 2009
  • Digital Mammography is an efficient imaging technique for the detection and diagnosis of breast pathological disorders. Six mammographic criteria such as number of cluster, number, size, extent and morphologic shape of microcalcification, and presence of mass, were reviewed and correlation with pathologic diagnosis were evaluated. It is very important to find breast cancer early when treatment can reduce deaths from breast cancer and breast incision. In screening breast cancer, mammography is typically used to view the internal organization. Clusterig microcalcifications on mammography represent an important feature of breast mass, especially that of intraductal carcinoma. Because microcalcification has high correlation with breast cancer, a cluster of a microcalcification can be very helpful for the clinical doctor to predict breast cancer. For this study, three steps of quantitative evaluation are proposed : DoG filter, adaptive thresholding, Expectation maximization. Through the proposed algorithm, each cluster in the distribution of microcalcification was able to measure the number calcification and length of cluster also can be used to automatically diagnose breast cancer as indicators of the primary diagnosis.

  • PDF

Digital Breast Tomosynthesis as a Breast Cancer Screening Tool for Women with Gynecologic Cancer (부인암을 가진 여성에서 유방암의 선별검사로서의 디지털 유방단층 촬영술)

  • Da-hoon Kim;Jin Chung;Eun-Suk Cha;Jee Eun Lee;Jeoung Hyun Kim
    • Journal of the Korean Society of Radiology
    • /
    • v.81 no.4
    • /
    • pp.886-898
    • /
    • 2020
  • Purpose The purpose of our study was to evaluate digital breast tomosynthesis as a breast cancer screening modality for women with gynecologic cancer. Materials and Methods This retrospective study included patients with underlying gynecologic malignancies who underwent screening digital breast tomosynthesis for breast cancer. The cancer detection rate, recall rate, sensitivity, specificity, and positive predictive value (PPV) were calculated. PPV1 was defined as the percentage of all positive screening exams that have a tissue diagnosis of cancer within a year. PPV2 was defined as the percentage of all diagnostic exams (and Breast Imaging Reporting and Data System category 4, 5 from screening setting) with a recommendation for tissue diagnosis that have cancer within a year. PPV3 was defined as the percentage of all known biopsies actually performed that resulted in a tissue diagnosis of cancer within the year. For each case of screen-detected cancer, we analyzed the age, type of underlying gynecologic malignancy, breast density, imaging features, final Breast Imaging Reporting and Data System assessment, histologic type, T and N stages, molecular subtype, and Ki-67 index. Results Among 508 patients, 7 with breast cancer were identified after a positive result. The cancer detection rate was 13.8 per 1000 screening exams, and the recall rate was 17.9%. The sensitivity was 100%, and the specificity was 83.2%. The false negative rate was 0 per 1000 exams. The PPV1, PPV2, and PPV3 were 7.7, 31.8, and 31.8, respectively. Conclusion Digital breast tomosynthesis may be a promising breast cancer screening modality for women with gynecologic cancer, based on the high cancer detection rate, high sensitivity, high PPV, and high detection rate of early-stage cancer observed in our study.

The Evaluation of Space Dose Distribution for Digital Mammography Equipment (디지털 유방촬영장비에 관한 공간선량율 평가)

  • Jung, Hongmoon;Jung, Jaeeun;Hyun, Hyejin;Won, Doyeon
    • Journal of the Korean Society of Radiology
    • /
    • v.9 no.1
    • /
    • pp.61-65
    • /
    • 2015
  • Mammography equipment is an essential detector for making an early diagnosis of female's breast lesion. Recently, in most hospitals, a digital mammography detector is used due to the wide and consistent supply of digital mammography equipment. However, the average effective radiation is increasing due to the indiscreet use of CR or DR mammography. The purpose of this study is to recognize the possible indirect radiation damage, which can be occurred due to an excessive effective exposure of radiation, by evaluating spacial radiation rate of the digital mammography detector used for female patient. Consequently, the high mount of spacial radiation showed digital mammography equipment on the horizontal direction. Considering the result, digital mammography equipment should be installed by avoiding along the horizontal direction.

The Evaluation of Radiation Dose by Exposure Method in Digital Magnification Mammography (디지털 유방확대촬영술에서 노출방식에 따른 피폭선량 평가)

  • Kim, Mi-Young;Kim, Hwa-Sun
    • Journal of radiological science and technology
    • /
    • v.35 no.4
    • /
    • pp.293-298
    • /
    • 2012
  • In digital mammography, Exposure factor were automatically chosen using by measurement breast thickness and the density of mammary gland. It may cause a increase glandular dose. The purpose of this study was to investigate optimal image quality in digital magnification mammography to decrease radiation exposure of patient dose. Auto mode gives the best image quality however, AGD showed better image quality. Image quality of manual mode passed phantom test and SNR at 55% mAs of auto mode commonly used in the digital magnification mammography. Also it could reduce AGD. According to result, manual mode may reduce the unnecessary radiation exposure in digital magnification mammography.

Microcalcification Extraction by Wavelet Transform and Automatic Thresholding (웨이브렛 변환과 자동적인 임계치 설정에 의한 미세 석회화 검출)

  • Won, Chul-Ho;Seo, Yong-Su;Cho, Jin-Ho
    • Journal of Korea Multimedia Society
    • /
    • v.8 no.4
    • /
    • pp.482-491
    • /
    • 2005
  • In this paper, we proposed the microcalcification detection algorithm which is based on wavelet transform and automatic thresholding method in the X-ray mammographic images. Digital X-ray imaging system is essential equipment in the field diagnosis and is widely used in the various fields such as chest, fracture of a bone, and dental correction. Especially, digital X-ray mammographic imaging is known as the most important method to diagnose the breast cancer, many researches to develop the imaging system are processing in country. In this paper, we proposed a microcalcifications detection algorithm necessary in the early phase of breast cancer diagnosis and showed that a algorithm could effectively detect microcalfication and could aid diagnosis-radiologist.

  • PDF

Implementation of Digital Mammogram CAD Algorithm (디지털 유방영상의 CAD 알고리즘 구현)

  • Lee, Byungchea;Choi, Guirack;Jung, Jaeeun;Lee, Sangbock
    • Journal of the Korean Society of Radiology
    • /
    • v.8 no.1
    • /
    • pp.27-33
    • /
    • 2014
  • Medical imaging has increased rapidly in the increase of interest in health, with the development of computer technology, digitization of medical imaging is rapidly advancing, PACS has been introduced to the medical field. Increase in the production of medical images by these phenomena made increased the workload of radiologist who must read a medical image. in response to the need for secondary diagnosis using a computer, The term of CAD in medical radiology field was introduced. In this study, we have proposed a CAD algorithm for the interpretation of the image obtained by the digital X-ray mammography equipment. The experiments were performed by programmed in Visual C++ for the proposed algorithm. A result of the execution of the CAD algorithm seven sample images, the results of five samples was confirmed in breast cancer and benign tumors, both the images sample was error processing. If you use a program that implements this with the algorithm proposed in this study it is helpful to reading breast images, and it is considered to contribute significantly to the early detection of breast cancer.