Impact on dose and image quality of a software-based scatter correction in mammography

Autores: Monserrat, Teresa; Prieto Azcárate, Elena; Barbes Fernandez, Benigno; Pina Insausti, Luis Javier; Fernández, B
Título de la revista: ACTA RADIOLOGICA
ISSN: 0284-1851
Volumen: 59
Número: 6
Páginas: 649-56
Fecha de publicación: 2017
Lugar: WOS
CDMAM phantom images were acquired for various PMMA thicknesses and inverse Image Quality Figure (IQFinv) was calculated. Values of incident entrance surface air kerma (ESAK) and average glandular dose (AGD) were obtained from the DICOM header for a total of 1088 pairs of clinical cases. Two experienced radiologists compared subjectively the image quality of a total of 149 pairs of clinical cases. Results CNR values were higher and doses were lower in PRIME mode for all thicknesses. IQFinv values in PRIME mode were lower for all thicknesses except for 40¿mm of PMMA equivalent, in which IQFinv was slightly greater in PRIME mode. A mean reduction of 10% in ESAK and 12% in AGD in PRIME mode with respect to standard mode was obtained. The clinical image quality in PRIME and standard acquisitions resulted to be similar in most of the cases (84% for the first radiologist and 67% for the second one). Conclusion The use of PRIME software reduces, in average, the dose of radiation to the breast without affecting image quality. This reduction is greater for thinner and denser breasts