Model 549
General & Small Parts Phantom
Stacks Image 2684

The Model 549 General & Small Parts phantom is an easy, comprehensive means of evaluating imaging systems with an operating frequency range of 2.25 to 15.0 MHz. The first 6 cm of this model has been designed to accommodate the higher frequencies, whereas the area between 6-30 cm is reserved for frequencies less than 7.5 Mhz. The scanning wells when filled with water provide an ideal means to evaluate endoscopic probes. Simply lie the active area of the transducer onto the surface of the phantom, the procedure is the same as for any standard linear transducer.

The Model 549 is designed with a combination of monofilament line targets for distance measurements and tissue mimicking target structures of varying sizes and contrasts. One hundred and twenty (120) cystic-like target structures are positioned in-line vertically, thereby permitting an entire target group to be displayed in one view. Due to the acoustic similarity of the background material and the target structures, artifacts caused by distortion, shadowing or enhancement have been eliminated. Six gray scale targets ranging in contrast from +15 to -15 dB are provided to evaluate the system's displayed dynamic range and gray scale processing performance.

Tests Performed

  • Dead Zone or Ring-Down
  • Vertical Measurement Calibration
  • Horizontal Measurement Calibration
  • Sensitivity/Penetration
  • Functional Resolution
  • Focal Zone
  • Axial & Lateral Resolution
  • Image Uniformity
  • Gray Scale & Displayed Dynamic Range