INTRODUCTION
The Doppler Flow phantoms provide a reliable means of evaluating a Doppler Flow Imaging System's ability to
detect the location and direction of flow, flow velocity and sensitivity.
The phantoms are constructed of a rubber-based tissue mimicking material. This material extends the useful life
of the phantom by avoiding problems due to melting, freezing, dehydration and breakage from dropping, which
are commonly associated with hydrogel (water-based) phantoms. By eliminating these problems, the durability,
quality and reliability of this product is guaranteed for three years.
The acoustic properties of all biologic and non-biologic materials are affected by temperature variations. Most
diagnostic imaging systems and tissue-mimicking phantoms are calibrated at room temperature, commonly
referred to as 23°C. To ensure measurement accuracy ATS incorporates a thermometer strip affixed to the outside
surface of the phantom.
The sound velocity of most diagnostic imaging systems is calibrated to 1,540 meters per second (mps), the
assumed average velocity of sound through human soft tissue. The rubber-based tissue-mimicking material has a
sound velocity of 1450 mps at 0.5dB/cm/Mhz (measured at 3.5MHz) at room temperature (23°C).
The rate of fluid flow through the phantom when measured by a Doppler imaging system is not affected by the
differences in sound velocity, therefore, distortion of these measurements will not occur.
Product Description
Model 523A
Cardiac Doppler Flow Phantom
The Model
ATS
523A tissue mimicking doppler flow phantom contain
s
four flow channels of varying diameters
simulating the deep vasculature, such as the cardiac and abdominal vessels. Two fixed-angled scan surfaces
maintain a constant angle between the sound beam and the Doppler Fluid flowing through the phantom.
T
he scan surfaces are angled at 18
°
and 56
°
, permitting continuous scanning at depths ranging from 3 to 17
cm.
Model 524
Peripheral Vascular Doppler Flow Phantom
The Model
ATS
524 tissue mimicking doppler flow phantoms contain four flow channels simulating superficial
vasculature. The simulated vessels are located 15.0 mm below the scan surface. Built-in scanning wells are
provided to permit the use of water or a low viscosity gel as acoustic coupling agents.
T
he Model 524 contains four flow channels with diameters 2, 4, 6, & 8 mm, without stenosis.
If the user requires depths greater than 15 mm, we recommend the use of our Model 528 scanning wedge. The
wedge is constructed of the same tissue mimicking material as the doppler flow phantoms and provides an
additional 50 mm of scanning depth.
Test Performed
·
Flow Velocity
·
Sensitivity at varying depths
·
Maximum Penetration
·
Location of Flow