Abstract

A wide variety of digital mammography systems are now commercially available. These include digital radiography (DR) systems such as the CSi/amorphous silicon detector (for example, GE Senographe 2000D, DS and Essential models), amorphous selenium (for example, LoRad Selenia, Siemens Novation and Inspiration models, IMS Giotto, Planmed Nuance) and a scanning system with silicon detectors (for example, Sectra Micro Dose Mammography). A variety of computerised radiography (CR) systems for mammography are also available (for example, Fuji Profect, Kodak DirectView, Konica Regius 190, Agfa CR 85-X). Recently the CR manufacturers have introduced new designs of phosphor plates. Such a wide variety of systems raises the question of how the performances of these systems compare with each other and with film-screen technology. Another factor to be considered is the radiation dose required by each system to reach an acceptable level of image quality. To help answer these questions, the National Health Service Breast Screening Programme and European Guidelines specify minimum and achievable standards for dose and image quality. The minimum standard is designed to ensure that new digital systems are at least as good as the previous film-screen systems. This lecture compares the measurements on a wide range of digital systems against the standards in the European Guidelines. The overall conclusion is that the DR systems can generally meet the achievable image quality standards for a dose lower than that used for film-screen systems. While the new designs of CR plate have brought about measurable improvements, most CR systems still require doses higher than film-screen systems to meet the minimum standards for image quality.

Highlights

  • Breast-sparing oncoplastic procedures (BSOP) offer a predictive marker guiding use of anti-oestrogen therapy, and radical new alternative to mastectomy and conventional breast- expression profiling appears to select patients more or less likely to conserving surgery in early breast cancer treatment

  • The aim was to document attitudes to male radiographers and the effect on the programme performance parameters through a postal questionnaire completed by 85.8% of a random sample of 2,000 women recently screened by BreastCheck

  • Nine per cent would not have proceeded if the radiographer was male; 17.5% agreed that ‘If there were male radiographers I would not return for another screening appointment’; and 18.3% were unsure

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Summary

Introduction

Breast-sparing oncoplastic procedures (BSOP) offer a predictive marker guiding use of anti-oestrogen therapy, and radical new alternative to mastectomy and conventional breast- expression profiling appears to select patients more or less likely to conserving surgery in early breast cancer treatment. We have compared the results of screening with analogue and digital technology over our first 2 years, in terms of recall rates, cancer detection rates and positive predictive value, and found no overall significant difference in any of these parameters. Abnormalities are graded as A, B or C at consensus by the radiologists and reporting radiographers depending upon the mammographic likelihood of cancer and biopsy This means that patients can be allocated to one of our three assessment clinics and at specific times within those clinics to facilitate workflow. Methods A retrospective analysis of all breast cancer patients with recurrence who had completed 5 years of follow-up was performed. Infection control is not routinely included in the quality assurance process of all units

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