منابع مشابه
MRXCAT: Realistic numerical phantoms for cardiovascular magnetic resonance
BACKGROUND Computer simulations are important for validating novel image acquisition and reconstruction strategies. In cardiovascular magnetic resonance (CMR), numerical simulations need to combine anatomical information and the effects of cardiac and/or respiratory motion. To this end, a framework for realistic CMR simulations is proposed and its use for image reconstruction from undersampled ...
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Gamma index pass rates were evaluated for an anthropomorphic phantom using both 2D and 3D calculations. The phantom was irradiated with the traditional dosimetry insert loaded with radiochromic film and TLD, and then with a 3D dosimetry insert. A comparison with the calculated dose distribution showed that both the PRESAGE® dosimeter and the film and TLD system agreed with the plan to within 5%...
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The construction parameters and the composition of phantoms are strictly specified. Hence comparing the results from repeated imaging of a phantom with different imaging parameters allows isolation of the effect of the varied parameter. With this knowledge one can assign settings for optimum imaging of that particular phantom. Ideally the phantom would be exactly the same for every scan to allo...
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After amputation many people experience vivid sensations of the body part they have lost. These “sensory ghosts” can arise within hours of the loss of the limb and are often painful. Such phenomena have been a mysterious part of medical lore for over a century, but recent research suggests that phantoms can teach us substantial lessons about the organisation and plasticity of the brain. We stan...
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ژورنال
عنوان ژورنال: School Science and Mathematics
سال: 1902
ISSN: 0036-6803
DOI: 10.1111/j.1949-8594.1902.tb00409.x