Cardia - Premarket Spec

Until the mid 90’s Mechanical Probes were used in ultrasound scanners.

Slowly they have been phased out and today phased array probes are the standard.

Phased array probes have distinct advantage in beamforming. In short they give better lateral and axial resolution. Hence the Phased array probes were rapidly adopted as a mean of taking the image quality forward. The cutting edge scanners with improved image quality were all coming from phased array probes. But in that process a huge mistake was done and it has gone unnoticed.

The industry started migrating the phased array technology to mid and low end systems too. But the fact is an annular 2 element mechanical probe can give a superior image compared to a 48 element mid end current generation phased array probe.

We are targeting to match the performance of a mid range scanner costing 12 lakhs with our mechanical probe and we believe it could be done. In a developing country like India there is a clear requirement in that segment and that is what we need to address and that is exactly where we want to fit into.

1.0     OVERALL DESCRIPTION

Cardia is an echo cardiogram with imaging in the following modes

1.       B

2.       M

3.       Pulse wave Doppler

4.       Continious wave Doppler

5.       Colour flow Doppler

It supports imaging with the following transducers

1.       3.0 MHz (2 – 4.5 MHz broad band) 2 element annular mechanical probe

Image is displayed in a 15” flat screen TFT monitor at 1024 x 768, 32 bit true colour resolution.

Power is derived from an external mains socket. In addition it supports battery backup for 6 hrs through built in batteries.

Ultrasound scanner has a standard Computer laptop built in which provides display and storage capabilities.

Display is foldable type and the laptop computer is detachable.

2.1     Cardia FUNCTIONAL CHARACTERISTICS

General Descriptions

Imaging mode:                B, B+B, B+M, M, B+PWD, B+CWD, B+Power Doppler, B+Directionla Power Doppler, B+CFM

Gray scale:                     256

Colour scale:                   256 shades for Colour Doppler Modes

Display:                          15” 1024 x 768, 60Hz refresh, 32bit true colour Flat CRT monitor

Transducer frequency:      2.0 ~ 10MHz

Beam Forming                 Multiple transmit focus

Multiple receive focus

                                      Dynamic receive aperture

                                      Tracking filter

                                      Variable transmit frequency

Variable acoustic power

Dynamic Range               120dB target

Scanning angle:               from 40 to 110 degree

Scanning depth (mm):      from 75 to 200

Imaging Processing:

B-Mode

Dynamic range

Frame Averaging

6-segment TGC adjustment

γ-correction

M-Mode

                                      Scroll or moving bar type

Pulse Wave Doppler

                                      Doppler Gain 20 to 120 db in 10 spteps

Sample Volume – 0.5mm to 4.0mm, probe dependant

Angle correction – 360 deg in 15 deg step

PRF 4 Khz to 8 KHz (Supports HPRF)

Wall filter – automatic optimisation

Adjustable baseline and velocity scale

Continious Wave Doppler

                                      With simultaneous B-Update

Colour Doppler

                                      Modes: Power Doppler, Directional Power Doppler and CFM modes

                                      Doppler Gain 20 to 120 db in 10 spteps

                                      PRF 1 to 4 KHz adjustable

                                      Ensemble length – 4 to 16 pulses per vector, adjustable

                                      Colour persistance – adjustable

                                      Colour priority - adjustable