An Auto TCD Probe Design and Visualization
Transcranial Doppler ultrasound (TCD) is a non-invasive ultrasound method used to examine blood circulation within the brain. During TCD, ultrasound waves are transmitted through the tissues including skull. These sound waves reflect off blood cells moving within the blood vessels, allowing the radiologist to interpret their speed and direction. In this paper, an auto TCD probe is developed to control the 2D deflection angles of the probe. The techniques of Magnetic Resonance Angiography (MRA) and Magnetic Resource Imagine (MRI) have been used to build the 3D human head model and generate the structure of cerebral arteries. The K-Nearest Neighbors (KNN) algorithm as a non-parametric method has been used for signal classification and regression of corresponding arteries. Finally, a global search and local search algorithms are used to locate the ultrasound focal zone and obtain a stronger signal efficient and more accurate result.
KeywordsAuto TCD probe K-nearest neighbor Signal search and classification
- 5.Naqvi, J., Yap, K.H., Ahmad, G., Ghosh, J.: Transcranial Doppler ultrasound: a review of the physical principles and major applications in critical care. Int. J. Vasc. Med. (2013)Google Scholar
- 9.Sherebrin, S., Fenster, A., Rankin, R.N., Spence, D.: Freehand three-dimensional ultra-sound: implementation and applications. In: Medical Imaging 1996: Physics of Medical Imaging, 2708, pp. 296–304 (1996)Google Scholar