نتایج جستجو برای: heterogeneous phantom
تعداد نتایج: 142666 فیلتر نتایج به سال:
We investigated the appropriateness of four different mammography phantoms for image quality evaluation in Digital Breast Tomosynthesis (DBT). We tested the CIRS BR3D phantom, the ACR Prototype FFDM Accreditation Phantom, the Penn anthropomorphic breast phantom and the Quart mam/digi EPQC phantom. This work discusses the advantages and shortcomings of each phantom and concludes that none of the...
OBJECTIVE To provide a better understanding of the prevalence, correlates and quality of phantom sensations and phantom pain in child and adolescent amputees. DESIGN Retrospective survey study. SETTING Recruitment through the War Amputations of Canada. PARTICIPANTS Sixty child and adolescent amputees aged 8-18 years who were missing a limb due to a congenital limb deficiency (n = 27) or s...
OBJECTIVE To compare between the American College of Radiology (ACR) accreditation phantom and digital mammography accreditation phantom in assessing the image quality in full-field digital mammography (FFDM). MATERIALS AND METHODS In each week throughout the 42-week study, we obtained phantom images using both the ACR accreditation phantom and the digital mammography accreditation phantom, a...
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