Sono408 Spherical Lesion Phantom

Precisely measure spatial resolution in three dimensions.

  • Test axial, lateral and elevational resolution simultaneously
  • Tailor your testing to the unique qualities of spherical lesions
  • Test high frequency transducers used in echocardiography


Spherical lesions demand a different kind of testing. They have negligible echogenicity and produce no distal enhancement or shadowing.

Therefore, spatial resolution should be measured in the axial, lateral and elevational directions. The thinner the ultrasound beam, the better the elevational resolution of the system.


The Sono408 Phantom allows you to:

  • Check for targets at both 0.5 cm and 0.75 cm depth intervals
  • Test multiple resolutions at depths from 0.5 to 16 cm with 2 mm and 4 mm diameter lesions


Gammex’s HE (High Equivalency) Gel™, featured in Sono408 Phantoms, is optimized for use with tissue harmonics imaging.

  • HE Gel-based phantoms have a near-linear response of attenuation-to-frequencies between 2 to 18 MHz
  • The response of attenuation-to-frequencies over 8 MHz supports accurate axial resolution and penetration depth representative of human tissue¹,²
S2

"The tissue-like properties in Gammex ultrasound phantoms make them ideal for testing the performance of scanners."

James A. Zagzebski, Ph.D., FAAPM
Professor Emeritus, Retired Chair
Department of Medical Physics, 
Wisconsin Institutes for Medical Research

Sono408 Spherical Lesion Phantom

  • Test axial, lateral and elevational resolution simultaneously
  • Test high frequency transducers used in echocardiography


  • HE Gel is very uniform and has a nonlinearity parameter (B/A) that is equivalent to human liver
  • HE Gel can be rejuvenated and your phantom re-validated any time to strengthen your investment

Specifications

HE Gel™: Gammex’s multi-frequency tissue mimicking material

LabelAttenuation Coefficient3 0.5 or 0.7 dB/cm/MHz
Variation of Attenuation with Frequency1,4: f1.08 at 0.5 dB/cm/MHz
f1.1 at 0.7 dB/cm/MHz
HE Gel Freezing Point: < 0°C
HE Gel Melting Point: >100°C
Frequency Range2: 2 - 18 MHz
Speed of Sound: 1540 m/s
Features Sono408
Tissue Mimicking Material, PatentedMulti-Frequency HE Gel:
Speed of Sound: 1540 m/s
Frequency Range2: 2 - 18 MHz
Anechoic Spherical Lesions: 211 4 mm diameter lesions in a plane, spaced vertically at 0.5 cm apart and horizontally at 0.75 cm apart; at depths of 0.5 to 16 cm
105 2 mm diameter lesions in a plane, spaced at 0.5 cm apart vertically & horizontally; at depths of 0.5 to 10.5 cm
Contrast <-25 dB

Construction

Scanning Surface: Patented Composite Film
Container: ABS
Dimensions: 23.2 x 8.3 x 18.5 cm (9.25 x 3.25 x 7.25 in)
Weight: 2.8 kg (6 lbs. 5 0z.)

All acoustic measurements at 4.5 MHz, 22oC


  1. Browne, J., Ramnarine, K., Watson, A., Hoskins, P., Assessment of the Acoustic Properties of Common Tissue-mimicking Test Phantoms. Ultrasound in Medicine and Biology, Vol. 29 (7), pp. 1053-1060, 2003.
  2. Goldstein, A., The Effect of Acoustic Velocity on Phantom Measurements. Ultrasound in Medicine and Biology, Vol. 26, pp. 1133-1143, 2003.
  3. An attenuation coefficient of 0.5 dB/cm/MHz represents healthy human liver tissue and 0.7 dB/cm/MHz represents fatty liver tissue.
  4. Near-linear responses of attenuation with frequencies between 2 to 18 MHz support accurate axial resolution and penetration depth representative of human tissue.

Accessories

S5

Padded travel case with shoulder strap