Evaluation of pressure-controlled mammography compression paddles with respect to force-controlled compression paddles in clinical practice

Pressure controlled compression of the breast in mammography

Mammography is a widely used diagnostic modality in radiology and is the starting procedure in almost every work-up in breast imaging whether this is diagnostic, i.e. initiated by clinical signs or in asymptomatic subjects in screening programs. Screening mammography is widely considered as one of the major medical successes of the past decades, and the decline in breast cancer mortality that h...

Topologically Controlled Lossy Compression

This paper presents a new algorithm for the lossy compression of scalar data defined on 2D or 3D regular grids, with topological control. Certain techniques allow users to control the pointwise error induced by the compression. However, in many scenarios it is desirable to control in a similar way the preservation of higher-level notions, such as topological features , in order to provide guara...

Quality Controlled Compression of Polysomnograms

A novel compression algorithm incorporating the near-best wavelet packet transform is introduced for multi-modal signals in low bitrate telemonitoring applications. The method permits flexible control of the total bitrate subject to the constraints of the channel, and the allocation of the total bitrate to each of the constituent modes subject to the quality preferences of the observer. Its per...

Practitioner compression force variability in mammography: a preliminary study.

OBJECTIVE This preliminary study determines whether the absolute amount of breast compression in mammography varies between and within practitioners. METHODS Ethics approval was granted. 488 clients met the inclusion criteria. Clients were imaged by 14 practitioners. Collated data included Breast Imaging Reporting and Data System (BI-RADS) density, breast volume, compression and practitioner ...

Do doctors position defibrillation paddles correctly? Observational study.