Patient Dose Versus Image Quality in Digital Mammography at Instituto Português de Oncologia de Coimbra (IPOC) – Portugal

2009 ◽  
pp. 652-655
Author(s):  
A. M. F. Fausto ◽  
A. Roda ◽  
M. C. Lopes ◽  
S. Neves ◽  
S. Pereira ◽  
...  
Keyword(s):  
Image Quality ◽  
Digital Mammography ◽  
Patient Dose

scholarly journals Screen-film versus full-field digital mammography: Radiation dose and image quality in a large teaching hospital

2013 ◽  
Vol 28 (4) ◽  
pp. 398-405
Author(s):  
Tomislav Stantic ◽  
Olivera Ciraj-Bjelac ◽  
Sanja Stojanovic ◽  
Marijana Basta-Nikolic ◽  
Danijela Arandjic ◽  
...  
Keyword(s):  
Image Quality ◽  
Radiation Dose ◽  
Digital Mammography ◽  
Quality Criteria ◽  
Patient Dose ◽  
Dose Assessment ◽  
Clinical Image ◽  
Full Field ◽  
Mean Glandular Dose ◽  
Full Field Digital Mammography

The objective of this paper is to measure the radiation dose and image quality in conventional screen-film mammography and full-field digital mammography in women referred to mammography examination. Participants underwent bilateral, two-view screen-film mammography or full-field digital mammography. The visibility of anatomical regions and overall clinical image quality was rated by experienced radiologists. Total of 387 women and 1548 mammograms were enrolled in the study. Image quality was assessed in terms of image quality score, whereas patient dose assessment was performed in terms of mean glandular dose. Average mean glandular dose for cranio-caudal projection was 1.5 mGy and 2.1 mGy in full-field digital mammography and screen-film mammography, respectively. For medio-lateral oblique projection, corresponding values were 2.3 and 2.1 mGy. Overall image quality criteria scoring was 0.82 and 0.99 for screen-film and digital systems, respectively. The scores were in the range from 0.11 to 1.0 for different anatomical structures. Overall, full-field digital mammography was superior both in terms of image quality and dose over the screen-film mammography. The results have indicated that phantom dose values can assist in setting the optimisation activities in mammography and for comparison between mammography units. To obtain accurate diagnostic information with an acceptable radiation dose to breast, it is necessary to periodically perform patient dose and image quality surveys in all mammography units.

scholarly journals Study of Image Quality(contrast) and Reduction of Patient Dose by Using Heavy Metal Filters

2002 ◽  
Vol 58 (1) ◽  
pp. 109-114 ◽  
Author(s):  
YONA OISHI ◽  
YUICHI SANO ◽  
KEN-ICHI YOSHIDA ◽  
HIDEYUKI IWANAGA ◽  
KEN-ICHIRO YASUI ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Image Quality ◽  
Patient 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

scholarly journals Establishing a quality assurance baseline for radiological protection of patients undergoing diagnostic radiology

2011 ◽  
Vol 15 (3) ◽  
pp. 70 ◽  
Author(s):  
Geoffrey K Korir ◽  
Jeska Sidika Wambani ◽  
Ian K Korir
Keyword(s):  
Quality Control ◽  
Quality Assurance ◽  
Image Quality ◽  
Radiation Exposure ◽  
High Speed ◽  
Quality Criteria ◽  
Patient Dose ◽  
Radiological Protection ◽  
X Ray ◽  
High Speed Film

Background. The wide use of ionising radiation in medical care has resulted in the largest man-made cause of radiation exposure. In recent years, diagnostic departments in Kenya have adapted the high-speed film/screen combination without well-established quality control, objective image quality criteria, and assessment of patient dose. The safety of patients in terms of justification and the as-low-as-reasonably-achievable (ALARA) principle is inadequate without quality assurance measures. Aim. This study assessed the level of film rejects, device performance, image quality and patient dose in 4 representative hospitals using high-speed film/screen combination. Results. The X-ray equipment quality control tests performance range was 67% to 90%, and 63% of the radiographs were of good diagnostic value. The measured prevalent chest examination entrance surface dose (ESD) showed levels above the international diagnostic reference levels (DRLs), while lumbar spine and pelvis examination was the largest source of radiation exposure to patients. Conclusion. The optimisation of patient protection can be achieved with optimally performing X-ray equipment, the application of good radiographic technique, and continuous assessment of radiographic image quality.

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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