Optimizing the anode-filter combination in the sense of image quality and average glandular dose in digital mammography

2008 ◽  
Author(s):  
Mari Varjonen ◽  
Pekka Strömmer
Keyword(s):  
Image Quality ◽  
Digital Mammography ◽  
Average Glandular Dose

Can the average glandular dose in routine digital mammography screening be reduced? a pilot study using revised image quality criteria

2005 ◽  
Vol 114 (1-3) ◽  
pp. 383-388 ◽  
Author(s):  
B. Hemdal ◽  
I. Andersson ◽  
A. Grahn ◽  
M. Håkansson ◽  
M. Ruschin ◽  
...  
Keyword(s):  
Pilot Study ◽  
Image Quality ◽  
Digital Mammography ◽  
Mammography Screening ◽  
Quality Criteria ◽  
Average Glandular Dose

LATIN AMERICAN IMAGE QUALITY SURVEY IN DIGITAL MAMMOGRAPHY STUDIES

2016 ◽  
pp. ncw049
Author(s):  
Patricia Mora ◽  
Helen Khoury ◽  
Regina Bitelli ◽  
Ana Rosa Quintero ◽  
Fernando Garay ◽  
...  
Keyword(s):  
Image Quality ◽  
Latin American ◽  
Digital Mammography

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

2017 ◽  
Vol 59 (6) ◽  
pp. 649-656 ◽  
Author(s):  
Teresa Monserrat ◽  
Elena Prieto ◽  
Benigno Barbés ◽  
Luis Pina ◽  
Arlette Elizalde ◽  
...  
Keyword(s):  
Image Quality ◽  
Scatter Correction ◽  
Inverse Image ◽  
Clinical Image ◽  
Air Kerma ◽  
Average Glandular Dose ◽  
Standard Mode ◽  
Entrance Surface Air Kerma ◽  
Clinical Cases

Background In 2014, Siemens developed a new software-based scatter correction (Progressive Reconstruction Intelligently Minimizing Exposure [PRIME]), enabling grid-less digital mammography. Purpose To compare doses and image quality between PRIME (grid-less) and standard (with anti-scatter grid) modes. Material and Methods Contrast-to-noise ratio (CNR) was measured for various polymethylmethacrylate (PMMA) thicknesses and dose values provided by the mammograph were recorded. 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.

scholarly journals Clinical study in phase- contrast mammography: image-quality analysis

2014 ◽  
Vol 372 (2010) ◽  
pp. 20130025 ◽  
Author(s):  
Renata Longo ◽  
Maura Tonutti ◽  
Luigi Rigon ◽  
Fulvia Arfelli ◽  
Diego Dreossi ◽  
...  
Keyword(s):  
Clinical Study ◽  
Synchrotron Radiation ◽  
Image Quality ◽  
Digital Mammography ◽  
Phase Contrast ◽  
Medical Physics ◽  
University Hospital ◽  
Quality Analysis ◽  
Radiology Department ◽  
Contrast Imaging

The first clinical study of phase-contrast mammography (PCM) with synchrotron radiation was carried out at the Synchrotron Radiation for Medical Physics beamline of the Elettra synchrotron radiation facility in Trieste (Italy) in 2006–2009. The study involved 71 patients with unresolved breast abnormalities after conventional digital mammography and ultrasonography exams carried out at the Radiology Department of Trieste University Hospital. These cases were referred for mammography at the synchrotron radiation facility, with images acquired using a propagation-based phase-contrast imaging technique. To investigate the contribution of phase-contrast effects to the image quality, two experienced radiologists specialized in mammography assessed the visibility of breast abnormalities and of breast glandular structures. The images acquired at the hospital and at the synchrotron radiation facility were compared and graded according to a relative seven-grade visual scoring system. The statistical analysis highlighted that PCM with synchrotron radiation depicts normal structures and abnormal findings with higher image quality with respect to conventional digital mammography.

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