Traditional ultrasound systems operate at 5–9 MHz, allowing the borders of the prostate to be seen, but without much internal detail. ExactVu Micro-Ultrasound operates at 29 MHz, delivering 70-micron near-microscopic resolution, which enables real-time visualization of prostate tissue and ductal structures with unprecedented clarity.
The result: Real-time imaging that reveals structures previously invisible on conventional ultrasound.
Why Frequency Matters
Ultrasound frequency relates to the relationship between image clarity and depth. Higher frequencies produce sharper, more detailed image, but the depth of penetration is reduced. While lower frequencies penetrate deeper but produced less detailed images.
The engineering breakthrough that makes ExactVu possible is the ability to image deeply with higher frequencies allowing unprecedented resolution for even the largest prostates.

High-frequency sound waves
Shorter wavelengths
Optimized for prostate imaging depth
3x higher resolution (~70 microns)
Lower frequency sound waves
Longer wavelengths
Greater penetration depth
Limited resolution
Image quality in ultrasound isn’t just about frequency, it’s also about crystal spacing within the transducer. Tighter crystal spacing reduces artifacts and allows the beam profile to be more precisely controlled leading to improvements in resolution and signal to noise ratio.
| ExactVu Micro-Ultrasound Transducer | Conventional System Transducers |
| • Tightly spaced transducer crystals | • Wider spacing between transducer crystals |
| • Higher element density | • Lower element density |
| • Thinner, more focused beams | • Thicker ultrasound beams |
| • Increased sampling precision | • Reduced image sharpness |

The combination of 29 MHz frequency and dense crystal spacing allows clinicians to:
Visualize prostate tissue at near-microscopic resolution
Clearly Identify suspicious regions during the procedure
Perform targeted biopsies in real-time, with or without MRI
Reduce reliance on cognitive or software-based MRI fusion

No area of concern observed on ultrasound.

Concerning area with mottled appearance observed on micro-ultrasound.
| Confirmed Gleason Grade Group 3 (4+3) PCa (80% pattern 4 with extensive cribriforming) |