Controllo di qualità nella mammografia: Possibili impieghi di un nuovo dispositivo per il test della qualità dell'immagine e della dose

Translated title of the contribution: Quality control in mammography: Possible uses of new equipment for testing image quality and dose

Cosimo Di Maggio, Gisella Gennaro, Mauro Gambaccini, Simonetta Cattozzo

Research output: Contribution to journalArticlepeer-review

Abstract

The authors tested a new equipment containing a phantom to check quality mammographic image and an electronic instrument to measure incident radiation (Phan-EX). The phantom contains objects which have similar characteristics to the details of diagnostic interest and allows an easy and accurate estimation of image quality on the basis of the number of objects detected. The radiation detector, consisting of a solid state photodiode, provides an integer proportional to the input exposure. The results obtained highlighted a good reproducibility of instrument output and a good relationship between these values and the exposure ones obtained with a much more expensive ionization chamber. The device response was linear in varying both the anodic exposure (mAs) and the x-ray tube voltage (varying the energy, the calibration factor varied only by a small percent). The authors conclude that the Phan-EX may be useful for quality assurance of the mammographic unit. Furthermore, they suggest some of its practical applications: daily tests of qualitative of the mammographic unit and the treatment system performance, control of the automatic exposure probe, choice and optimization of exposure and treatment of the film parameters, the determination of the output of the x-ray tube, the evaluation of the sensitivity of different screen/film systems.

Translated title of the contributionQuality control in mammography: Possible uses of new equipment for testing image quality and dose
Original languageItalian
Pages (from-to)261-266
Number of pages6
JournalRadiologia Medica
Volume92
Issue number3
Publication statusPublished - Sep 1996

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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