Verification to dependence Power Doppler velocity for assessment of tissue vascularization

• Grant number: 14/21340-7
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: November 01, 2014
• End date: October 31, 2016
• Field of knowledge: Engineering - Biomedical Engineering - Medical Engineering
• Principal Investigator: Theo Zeferino Pavan
• Grantee: Maricy Ramos Martins
• Host Institution: Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto (FFCLRP). Universidade de São Paulo (USP). Ribeirão Preto , SP, Brazil
• Associated research grant: 13/18854-6 - Photoacoustic and ultrasound imaging applied to tissue characterization, AP.JP

Abstract

The optimization settings of the ultrasound machine is essential for the imaging power Doppler (PD) when trying to quantify tissue vascularization. However, the lack of standardization reduces the applicability of PD in common settings such as pulse repetition frequency (PRF) and wall motion filter (WMF) that can alter the formation of images of PD and hence influence the quantification of PD indices, which are known correlation between the flow and vascularity. The objective of this study is to investigate the influence of PRF and WMF images on PD and its quantification during different cardiac cycles. For this, data color pixel density (CPD) will be acquired and analyzed the percentages of false positives and false negative pixels in the images.

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

MARTINS, MARICY R.; MARTINS, WELLINGTON P.; SOARES, CARLOS A. M.; MIYAGUE, ANDRE H.; KUDLA, MAREK J.; PAVAN, THEO Z.. Understanding the Influence of Flow Velocity, Wall Motion Filter, Pulse Repetition Frequency, and Aliasing on Power Doppler Image Quantification. JOURNAL OF ULTRASOUND IN MEDICINE, v. 37, n. 1, p. 255-261, JAN 2018. (14/21340-7, 13/18854-6)