(CT)计算机体层摄影 ct scanner CT 扫描仪(CT机) analog/digital converter 模拟 / 数字转换器 digital/analog converter 数字 / 模拟转换器 voxel体素 pixel象素 spatial resolution 空|、可分辨率 density resolution 密度分辨率 Houlsfield unit CT 值单位 plain ct scan CT 平扫 contrast enhancement ct scan CT...
Patients need to remain motionless in the PET/CT scanner throughout the exam. Inquiring about claustrophobia when arranging the study can reduce non-diagnostic exams and cancellations and facilitate the planning for premedication. Regular use of sedatives, such as short-acting benzodiazepines, in adult...
Paul JF, Lambert V, Losay J, Petit J, Macé L, Belli E, Serraf A, Planché C, Angel C. Three-dimensional multislice CT scanner: value in patients with pulmonary atresia with septal defect. Arch Mal Coeur Vaiss. 2002;95:427–32. CAS PubMed Google Scholar Schoen P, Poerner M, Ha...
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Dual-source computed tomography coronary angiography influence of obesity, calcium load, and heart 热度: coronary ct angiography using the second-generation 320-detector row ct assessment of image quality and radiation dose in various heart rates compared with the first-generation scanner ...
Furthermore, the tree objects prevent the predictive statistical analyses from being hampered by radiomic limitation, above all inter-scanner variability. Specifically, the tree-based representation disentangles the statistical units from scanner peculiarities as it resorts to a relative distance measure. ...
To address such issues, scanner manufacturers have introduced iterative reconstruction algorithms to the market. In order to independently reduce noise and preserve resolution and image quality, IR methods use statistical and geometric models to variably weight the image data in a process that can be ...
To deal with this problem. Apple has come out with a new iPhone that uses biometric(生物识别的)information to lock itself up. The phone has a fingerprint scanner that will lock or unlock the phone. Your fingerprint becomes the key, and this makes it nearly impossible for others to use you...
Its axial FOV is the longest existing for a PET/CT scanner, covering 194 cm. Simultaneous truly total-body (TB) coverage (therefore TB PET) is only provided by this scanner for patients not taller than 194 cm, which is 99% of the world’s population [21,23]. The physics behind the ...
CT exams were obtained by using 160-slice CT (CANON Aquilion SP Prime Scanner, Canon Medical Systems Corporation, Otawara, Japan). CT scans were obtained by setting the following technical parameters: tube voltage 120 kV; tube current modulation 300 mAs, spiral pitch factor 0.98; collimation 64...