不同的医学图像提供了相关脏器的不同信息:CT(Computed Tomography,计算机X线断层扫描)和MRI(Magnetic Resonance Imaging,磁共振成像)以较高的空间分辨率提供了脏器的解剖结构信息,而PET(Positive Electron Tomography,正电子发射计算机断层扫描)和SPECT(Emission Computed Tomography ,单光子发射断层扫描)尽管空间分辨率较差,但...
Association of renal resistive index with aortic pulse wave velocity in hypertensive patients. Recent data suggest that renal haemodynamic parameters obtained by duplex Doppler sonography, especially the intrarenal resistive index (RI), may be associ... Giulio,Geraci,Giuseppe,... - 《European Journal...
Characteristics of a VM Type Thermal Compressor for Driving a Pulse Tube Cooler The paper studies the characteristics of the thermal compressor with the simulations based on thermoacoustic theory. Interesting features such as the dependence of local acoustic characteristics on the load, distribution of ...