The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Quantitative measurements of tissue stiffness can be obtained by measuring the speed of shear waves induced in tissue by acoustic radiation force. In homogeneous media, time-of-flight (TOF) measurements of shear wave speed (SWS) ideally are independent of the size of the region of interest (or reconstruction kernel). However, in heterogeneous media, shear wave morphology is altered by discontinuities...
The time-to-peak (TTP) displacement within the region of acoustic radiation force excitation (ROE) is directly related to the tissue shear modulus. It has previously been shown that the ROE TTP can be directly converted to shear modulus using a look-up table (LUT) for a given radiation force excitation focal configuration. While this method has the advantages of requiring less input data for stiffness...
The dynamic response in a translucent tissue-mimicking phantom resulting from an acoustic radiation force impulse (ARFI) was investigated with optically-based methods. Embedded microspheres (10-??m diameter) were tracked axially and laterally with an optical microscope; 0.5-??m displacement resolution was achieved in both dimensions with frame rates of up to 36 kHz. Tracking was achieved before, during,...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.