measure of uncertaintyentropyNon-invasiveUltrasound imaging is one of the non-invasive imaging, that diagnoses the disease inside a human body and there are numerous ultrasonic devices being used frequently. Entropy as a well known statistical measure of uncertainty has a considerable impact on the ...
In the medical world, ultrasound imaging is a way of looking inside the human body to make organs visible. As a derivative of ultrasound imaging, the flow velocity of blood in arteries or veins can be measured this way, which is useful to detect constrictions in these blood vessels. The ...
Medical ultrasound imaging systems allow a visualization of internal mechanical tissue displacements caused by external surface forces or by induced internal forces. The spatial distribution of internal strain can be derived from tissue displacements to get so called "elastograms" [5], which lead to ...
Clinical Study of Ultrasound Elastography in Qualitative Diagnosis of Breast Masses Breast mass is one of the clinical signs of breast lesions. Clinically, breast tumors can occur in breast cancer, breast tuberculosis, breast duct dilatati... Q Duan,N Zhuo,T Sun,... - 《J Medical Imaging He...
Doppler shift- the magnitude of the frequency change in hertz when sound and observer are in relative motion away from or toward each other. Doppler ultrasonography- application of the Doppler effect in ultrasound to detect movement of scatterers (usually red blood cells) by the analysis of the ...
When using waveform tomography to perform high-resolution imaging of a medium, it is vital to calculate the sensitivity in order to describe how well a model fits a given set of data and how the sensitivity changes with the spatial distribution of the heterogeneities. The traditional principle be...
3.2 Technique and Theory of OCT 3.2.1 Principle Idea of OCT OCT is often compared to medical ultrasound because of the similar working principles. Both medical imaging techniques direct waves to the tissue under examination, where the waves echo off the tissue structure. The back reflected waves...
What is the physical principle on which the ultrasound is based? Explain the basic principle of spectrophotometry. What are the major types of column chromatography, and what physical principle or interaction is each based on? Describe the principle behind PET imaging. What is the basic concept on...
A high sensitivity, wideband ultrasound sensor based on a high finesse Fabry-Perot (FP) polymer film interferometer has been demonstrated with a bandwidth ... EZY Zhang,PC Beard - 《Proceedings of Spie the International Society for Optical Engineering》 被引量: 64发表: 2004年 Microscope-integrated...
12 CT Basics CT principle preprocessing CS TC 22 Logarithmation Logarithmation is done because the attenuation of an X-ray beam follows an exponential law. I = Io e - µ d The calculation of the object attenuation „A“ requires the calculation of the logarithmic value of the measured ra...