English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Current commercial matrix transducers for 3D DCE-US do not displayside-by-side B-mode and contrast-mode images when capturing volumetric data,thus leaving the operator with no position feedback during lengthyacquisitions. The purpose of this study was to investigate the use oftransducer tracking to provide positioning feedback and to re-align images toimprove quantification. An interventional tracking system was developed inhouse using an infrared camera and a 3D-printed tracking target attached to aX6-1 matrix transducer. The system displays a virtual probe on a separatescreen and allows to capture a reference position to provide operator feedbackwhen no B-mode image is available. To test this set-up, five experiencedoperators were asked to locate an image landmark within a volunteer liver inB-mode images using the X6-1 connected to an EPIQ7 system. Operators were thenasked to maintain the transducer position for 4 minutes under three feedbackmethods: i) B-mode, ii) display of real-time virtual transducer, iii) blind.The magnitude of displacement over the cine was computed as an estimate of theimaging position error. We also investigated whether transducer coordinates canbe used to re-align images due to motion and improve contrast ultrasoundperfusion repeatability. A total of 8 patient data were obtained under an IRBfor this. Results suggest that tracking can assist operators maintain a steadyposition during a lengthy acquisition. With blinded acquisition, an averagedisplacement of 4.58 mm (S.D. 2.65 mm) was noted. In contrast, the averagedisplacement for tracking-feedback was comparable to B-mode at 3.48 mm (S.D.0.8 mm). We also observed that perfusion parameters had better repeatabilityafter re-alignment.

Clinical Evaluation of Real-Time Optical-Tracking Navigation and Live  Time-Intensity Curves to Provide Feedback During Blinded 4D Contrast-Enhanced  Ultrasound Imaging