Design and Implementation of 3D Positioning Algorithms Based on RF Signal Radiation Patterns for In Vivo Micro-robot

2010 ◽  
Author(s):  
Le Zhang ◽  
Yongxin Zhu ◽  
Tingting Mo ◽  
Jinlong Hou ◽  
Guoguang Rong
Keyword(s):  
Radiation Patterns ◽  
Design And Implementation ◽  
Micro Robot ◽  
3D Positioning ◽  
Rf Signal

Deconvolution of in-Vivo Ultrasound B-Mode Images

1993 ◽  
Vol 15 (2) ◽  
pp. 122-133 ◽  
Author(s):  
Jørgen Arendt Jensen ◽  
Jan Mathorne ◽  
Torben Gravesen ◽  
Bjarne Stage
Keyword(s):  
Portal Vein ◽  
Ultrasound Images ◽  
Medical Ultrasound ◽  
Axial Resolution ◽  
One Dimensional ◽  
Rf Signal ◽  
Ultrasound Pulse

An algorithm for deconvolution of medical ultrasound images is presented. The procedure involves estimation of the basic one-dimensional ultrasound pulse, determining the ratio of the covariance of the noise to the covariance of the reflection signal, and finally deconvolution of the rf signal from the transducer. Using pulse and covariance estimators makes the approach self-calibrating, as all parameters for the procedure are estimated from the patient under investigation. An example of use on a clinical, in-vivo image is given. A 2 × 2 cm region of the portal vein in a liver is deconvolved. An increase in axial resolution by a factor of 2.4 is obtained. The procedure can also be applied to whole images, when it is ensured that the rf signal is properly measured. A method for doing that is outlined.

Design and implementation of a mobile gamma spectrometry system to in vivo measure the accumulated activity of 131I in patients with thyroid diseases

2017 ◽  
Vol 129 ◽  
pp. 87-95 ◽  
Author(s):  
Sebastián Bahamonde ◽  
Gloria M. Díaz-Londoño ◽  
Marcía García ◽  
Felipe Albornoz ◽  
Pablo Andrade
Keyword(s):  
Gamma Spectrometry ◽  
Thyroid Diseases ◽  
Design And Implementation
Sign in / Sign up

Export Citation Format

Share Document