Search results for "mammography"

Prospective validation of a blood-based 9-miRNA profile for early detection of breast cancer in a cohort of women examined by clinical mammography

2016

Mammography is the predominant screening method for early detection of breast cancer, but has limitations and could be rendered more accurate by combination with a blood-based biomarker profile. Circulating microRNAs (miRNAs) are increasingly recognized as strong biomarkers, and we previously developed a 9-miRNA profile using serum and LNA-based qPCR that effectively stratified patients with early stage breast cancer vs. healthy women. To further develop the test into routine clinical practice, we collected serum of women examined by clinical mammography (N = 197) according to standard operational procedures (SOPs) of the Danish Cancer Biobank. The performance of the circulating 9-miRNA pro…

MAGIC-5: an Italian mammographic database of digitised images for research

2008

The implementation of a database of digitised mammograms is discussed. The digitised images were collected beginning in 1999 by a community of physicists in collaboration with radiologists in several Italian hospitals as a first step in developing and implementing a computer-aided detection (CAD) system. All 3,369 mammograms were collected from 967 patients and classified according to lesion type and morphology, breast tissue and pathology type. A dedicated graphical user interface was developed to visualise and process mammograms to support the medical diagnosis directly on a high-resolution screen. The database has been the starting point for developing other medical imaging applications,…

Autoantibodies in breast cancer: their use as an aid to early diagnosis

2007

There is increasing evidence that the immune system produces a humoral response to cancer-derived antigens. This study assessed the diagnostic potential of autoantibodies to multiple known tumour-associated proteins.Sera from normal controls (n = 94), primary breast cancer patients (n = 97) and patients with ductal carcinoma in situ (DCIS) (n = 40) were investigated for the presence of autoantibodies to p53, c-myc, HER2, NY-ESO-1, BRCA1, BRCA2 and MUC1 antigens by enzyme-linked immunosorbent assay.Reproducibly elevated levels of autoantibodies were seen in at least one of the six antigens in 64% of primary breast cancer patient sera and 45% of patients with DCIS at a specificity of 85%. No …

Imaging findings of primary breast sarcoma : results of a first multicenter study

2016

Abstract Purpose To investigate imaging findings in patients with primary breast sarcoma (PBS). Materials and methods A retrospective search in the databases of 10 radiological departments in Germany from 2000 to 2011 was performed. Only histologically proven cases of PBS were included into the study. Mammography was available in 31 patients (33 lesions), ultrasound images in 24 patients (24 lesions), and for 10 patients (14 lesions) magnetic resonance imaging (MRI) of the breast was performed. The breast findings were classified according to the American College of Radiology Breast Imaging Reporting and Data Systems (BI-RADS) 5th edition categories. Collected data were evaluated by means o…

Screening for breast and cervical cancer in a large German city: participation, motivation and knowledge of risk factors.

2005

Few data exist on attendance for cervical and breast cancer screening, breast self-examination and knowledge about risk factors for cervical cancer among German women. A population-based survey was performed in the city of Bielefeld in Germany.A questionnaire was mailed to 1500 randomly selected women age 25 to 75. Of those, 540 questionnaires were returned and 532 were analysed.Women participating in the survey considered themselves well informed about possibilities for early detection of breast cancer (84.0%). Most information was received from office-based gynaecologists (82.4%). 82.8% had a breast examination by a medical doctor annually and 43.1% practised breast self-examination every…

Preoperative assessment of breast cancer: sonography versus MR imaging.

2002

The purposes of our study were to compare the diagnostic value of whole-breast sonography and MR imaging as adjunctive techniques to mammography and to determine whether MR imaging should be used routinely in the preoperative assessment of patients with suspected breast cancer.. One hundred four women (age range, 34-84 years; mean age, 60 years) with findings highly suggestive of malignancy in the breast were examined with mammography, sonography, and dynamic MR imaging before undergoing surgery. All visualized suspicious lesions were correlated histologically. The diagnostic relevance of sonographic and MR imaging findings was compared with the diagnostic value of the findings of clinical …

BACKGROUND PARENCHYMAL ENHANCEMENT, MAMMOGRAPHIC DENSITY AND RISK OF BREAST CANCER

2018

Age, Health Beliefs and Breast Cancer Screening Program Participation in Valencian Community, Spain

2004

BACKGROUND: Age has a significant bearing on health beliefs related to participating in breast cancer screening programs. This study is aimed at analyzing the breast cancer-related beliefs and attitudes influencing screening program participation among different age groups. METHODS: In a transversal study, a comparison is drawn between the health-related beliefs of a group of women participating in a screening program and a group of non-participating women, taking into account three age ranges (under age 50 (N = 279), 50-60 age range (N = 463), and over age 60 (N = 271). RESULTS: Some variables significantly differ between the participating and non-participating women solely in certain subg…

Dissimilarity Application for Medical Imaging Classification

2005

In the traditional way of learning from examples of objects the classifiers are built in a feature space. However, alternative ways can be found by constructing decision rules on dissimilarity (distance) representations. In such a recognition process a new object is described by its distances to (a subset of) die training samples. The use of the dissimilarities is especially of interest when features are difficult to obtain or when they have a little discriminative power. Purpose of this work is the development of an automatic classification system which could be useful for radiologists in the investigation of breast cancer. The software has been designed in the framework of the MAGIC-5 col…

Mammogram segmentation by contour searching and massive lesion classification with neural network

2004

The mammography is the most effective procedure for an early diagnosis of the breast cancer. In this paper, an algorithm for detecting massive lesions in mammographic images will be presented. The database consists of 3762 digital images acquired in several hospitals belonging to the MAGIC-5 collaboration. A reduction of the surface under investigation is achieved, without loss of meaningful information, through segmentation of the whole image, by means of a ROI Hunter algorithm. In the following classification step, feature extraction plays a fundamental role: some features give geometrical information, other ones provide shape parameters. Once the features are computed for each ROI, they …