PURPOSE Dynamic contrast-enhanced ultrasound (DCE-US) can be used for calculating organ perfusion. By combining bolus injection with burst replenishment, the actual mean transit time (MTT) can be estimated. Blood volume (BV) can be obtained by scaling the data to a vessel on the imaging plane. The study aim was to test interobserver agreement for repeated recordings using the same ultrasound sc...

The present is a retrospective study examining the use of automated breast volume scanner (ABVS) for guiding breast conservation surgery in ductal carcinoma in situ (DCIS). A total of 142 patients with pathologically confirmed DCIS were initially included in the study. The patients underwent preoperative examination by conventional ultrasound and by ABVS. The BI-RADS category system was used to...

For sonography students and residents, ultrasound physics can be intimating and seemingly remote from their clinical responsibilities. This is primarily because of the difficulty in translating textbook physics concepts into their clinical practice. Although this may be a challenge in any discipline, in ultrasound physics it is compounded by the fact that what is seen, or measured, on the scann...

W e have been developing an interactive system that wil! display 3D structures from a series o f two-dimensional 2D images acquired incrementally by a conventional 2D ultrasound echographic (2DE) scanner. T h e user-guided scanner head is mounted on a mechanical arm that tracks the position and orientation of an image frame. W e expect in the coming year t o complete a version of the system in ...

Sorting and grading of wooden pallet parts are key factors for manufacturing quality and durable pallets. The feasibility of ultrasonic scanning for defect detection and classification has been examined in this report. Defects, such as sound and unsound knots, decay, bark pockets, wane, and holes were scanned on both red oak (Quercus rubra, L.) and yellow-poplar (Liriodendron tulipifera, L.) pa...

A new off-line multi-angle ultrasound compound scanner has been built with the aim of improving visualization of vascular tissue. Images are recorded from 3 to 11 insonification angles over a range of 40 to 50 degrees and the individual images are combined (averaged) into a single image (spatial compounding). Compared to conventional B-mode imaging, this multi-angle compound imaging (MACI) meth...