Ultrasound Image Quality Assessment for Novel E4D Interventional Imaging Probe

Area of Science:

• Medical imaging
• Ultrasound technology
• Interventional radiology

Background:

• Ultrasound guidance is crucial for interventional procedures, often enhanced by correlating images with CT, MRI, or X-ray.
• Real-time imaging is vital for accurate guidance and motion management.

Purpose of the Study:

• To characterize the image quality of a novel magnetic resonance-compatible, real-time 4D linear ultrasound probe (E4DL).
• To compare the performance of the E4DL prototype transducer against two commercial ultrasound probes (4V cardiac and C1-6 curvilinear).

Main Methods:

• Image quality was assessed using depth of penetration (DOP), lateral resolution, and lesion detectability (LSNR) in phantoms.
• Measurements were performed on GE Vivid E95 and LOGIQ E10 ultrasound scanners.
• In vivo liver images were acquired for further evaluation.

Main Results:

• The E4DL probe achieved a DOP of 147.0 ± 1.4 mm, comparable to the 4V probe (164.8 ± 3.2 mm) and less than the C1-6 probe (180+ mm).
• Lateral resolution was similar across all probes up to 125 mm.
• The E4DL probe demonstrated superior lesion signal-to-noise ratio (LSNR) near its focal zone (35 mm) compared to the 4V (40 mm) and C1-6 (50 mm) probes.

Conclusions:

• The E4DL probe exhibits image performance metrics comparable to existing commercial ultrasound probes.
• Its design and image quality suggest potential utility for image guidance and motion management in medical interventions.