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A method for practical equalization mammography of the radiographically dense breast.
Sabol JM, Soutar IC, Plewes DB.
Department of Medical Biophysics, Sunnybrook Health Science Centre, University of Toronto, Ontario, Canada.
Radiographics. 1995 Sep;15(5):1191-202
It has been shown that equalization radiography can overcome the well-known problem of limited film latitude encountered in mammography of the radiographically dense breast. Current equalization geometries based on single scanning beam (SER) or multiple-beam techniques approach the heat-loading limits of mammographic x-ray sources and require excessively long scan times. The authors have proposed an alternative geometry for equalization mammography, rotary scanning equalization radiography (RSER), which uses a slot beam in a translate-rotate geometry. RSER provides the simplicity of a single-beam geometry while offering improved tube efficiency over multiple-beam geometries. Numerical simulations and a prototype imaging system are used to show that equalized mammograms exhibiting high contrast throughout the breast can be obtained with a large scanning beam translated over the image at only four scanning angles. These results indicate that RSER is an efficient, simple, and practical means of imaging the dense breast.
Posted via PubMed for educational and discussion purposes only.
Link to PubMed Reference
Department of Medical Biophysics, Sunnybrook Health Science Centre, University of Toronto, Ontario, Canada.
Radiographics. 1995 Sep;15(5):1191-202
It has been shown that equalization radiography can overcome the well-known problem of limited film latitude encountered in mammography of the radiographically dense breast. Current equalization geometries based on single scanning beam (SER) or multiple-beam techniques approach the heat-loading limits of mammographic x-ray sources and require excessively long scan times. The authors have proposed an alternative geometry for equalization mammography, rotary scanning equalization radiography (RSER), which uses a slot beam in a translate-rotate geometry. RSER provides the simplicity of a single-beam geometry while offering improved tube efficiency over multiple-beam geometries. Numerical simulations and a prototype imaging system are used to show that equalized mammograms exhibiting high contrast throughout the breast can be obtained with a large scanning beam translated over the image at only four scanning angles. These results indicate that RSER is an efficient, simple, and practical means of imaging the dense breast.
Posted via PubMed for educational and discussion purposes only.
Link to PubMed Reference
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