Evaluation of new ultrasound techniques for clinical imaging in selected liver and vascular applications.

Evaluation of new ultrasound techniques for clinical imaging in selected liver and vascular applications. Dan Med J. 2018 Mar;65(3): Authors: Brandt AH Abstract This PhD project is based on a longstanding collaboration between physicists and engineers from the Center of Fast Ultrasound Imaging (CFU) at the Technical University of Denmark and medical doctors from the department of Radiology at Rigshospitalet. The intent of this cooperation is to validate new ultrasonic methods for future clinical use. 
Study I compares two B-mode ultrasound methods: the new experimental technique Synthetic Aperture Sequential Beam-forming combined with Tissue Harmonic Imaging (SASB-THI), and a conventional technique combined with THI. While SASB reduces the amount of data transformation, thus enabling wireless transmission, THI can improve resolution and image contrast, and creates fewer artifacts. Thirty-one patients with verified liver tumors were scanned and recordings with and without visible pathology were performed. Subsequently, eight radiologists evaluated blinded to information about the technique, which B-mode images they preferred, as well as detection of pathology. Evaluation showed that the techniques were preferred equally and tumor could be detected equally well. 
Study II deals with the ability of vector flow imaging (VFI) to monitor patients with arteriovenous fistulas for hemodialysis for upcoming stenosis. VFI is an angle-indepe...
Source: Danish Medical Journal - Category: General Medicine Tags: Dan Med J Source Type: research