نتایج جستجو برای: scanner performance
تعداد نتایج: 1067142 فیلتر نتایج به سال:
Introduction: There has been a curiosity about the spheroid geometry for PET scanners developments since several years ago, therefore in this study, we are aiming to evaluate the performance of this geometry and compare its performance with cylindrical geometry using Monte Carlo simulation. Methods: We simulated a spheroid geometry with a radius of 199 mm...
Domain shift refers to the difference in data distribution of two datasets, normally between training set and test for machine learning algorithms. is a serious problem generalization models it well-established that domain sets may cause drastic drop model’s performance. In medical imaging, there can be many sources such as different scanners or scan protocols, pathologies patient population, a...
We propose to extend the use of a digital camera to a new application, which consists basically in transforming it into a flatbed scanner. Our approach consists in simulating the flattening of warped documents, by means of computer vision techniques. In particular, with regard to the digitization of a book, we show that the drawbacks related to the use of a scanner can be bypassed. The correcti...
Emerging applications for positron emission tomography (PET) may require the ability to image very low activity source distributions in the body. The performance of clinical PET scanners in the regime where activity in the field of view is <1 MBq has not previously been explored. In this study, we compared the counting rate performance of two clinical PET/CT scanners, the Siemens Biograph Revea...
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