![]() ![]() For over 20 years, members of the team have been involved in obtaining four PMA approvals: R2 mammography CAD, R2 lung CT CAD, U-Systems somo.v ABUS and QView QVCAD. The QView team has been the leader in CAD and ABUS development. is a Silicon Valley based private company. Advanced Breast Cancer Detection with AI QView Medical, Inc. ![]() CLINICAL RELEVANCE/APPLICATIONĬontrolling pressure during mammography is important to decrease the discomfort experienced by women, but it may also be required to optimize screening outcomes. QView Medical, Inc 103 followers on LinkedIn. Results suggest that if too much pressure is applied during mammography this may increase interval cancer rates and decrease PPV. V and VD both decreased with increasing pressure. Cutoff points for pressure dividing the data in groups of 20% were 7.7, 9.2, 10.7, 12.8 kPa. Screening outcomes were different in the five compression pressure groups (p=0.004). ![]() For statistical analysis Pearson's Chi-squared test was used. In addition, for each group we computed mean values of V, VD, and VDG. We calculated frequencies of recalls, screen-detected cancers, and interval cancers stratified by compression pressure in five groups and derived program sensitivity, specificity, and positive predictive value (PPV). Using a research version of Volpara Density software (Volpara Solutions, Wellington, NZ) breast volume (V), dense tissue volume (VD), and volumetric density grade (VDG), were estimated for each exam, while compression pressure was estimated for medio-lateral oblique (MLO) view by dividing the compression force by the area of contact surface between the breast and the compression paddle. A total of 662 screen-detected cancers were included in this series, while 280 interval cancers corresponding to the selected exams were identified by linkage to the Dutch Cancer Registry. METHOD AND MATERIALSĪ consecutive series of 111,870 digital screening examinations performed in 53,684 women between July 2003 and December 2011 was collected from a screening centre operating within a nationwide breast cancer screening program. The aim of this study is to determine breast cancer screening outcomes in relation to the compression pressure applied during mammography. While firm breast compression is generally thought to be required for high quality mammograms the relationship between the amount of compression and screening performance has not been studied systematically. ![]()
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