Working Principle:
The ultrasonic transcranial Doppler blood flow analyzer utilizes the principle of ultrasonic Doppler frequency shift to explore and measure non-fetal blood flow movement information. It is used for blood flow measurements in transcranial, cervical, and peripheral blood vessels and does not include analytical diagnostic functions.
TCD technology uses ultrasound to penetrate weak areas of the skull and, combined with the Doppler principle, performs real-time spectral analysis of Doppler frequency shift echo signals from red blood cells in blood vessels. This enables the analysis of cerebrovascular blood flow conditions, thereby facilitating the diagnosis of cerebrovascular diseases.
Structural Features:
The Kejin ultrasonic transcranial Doppler blood flow analyzer adopts a modular design. It is compact, lightweight, and portable, and can be flexibly combined with external computer systems to achieve the detection functions of an ultrasonic transcranial Doppler blood flow instrument.
Technical Characteristics:
The ultrasonic transcranial Doppler blood flow analyzer features functions such as blood flow spectrum display, blood flow velocity measurement and calculation, parameter adjustment, cine playback, and print report settings. It can store, retrieve, and delete medical record data.
Ultrasonic Probes:
Equipped with a KJ-PW-2MHz ultrasonic probe with a measurement range not narrower than 500 cm/s to 5000 cm/s, enabling fixed-distance detection of intracranial cerebrovascular blood flow velocity.
Equipped with a KJ-CW-4MHz ultrasonic probe with a measurement range not narrower than 250 cm/s to 2500 cm/s, enabling detection of extracranial superficial vascular blood flow velocity.
Blood Flow Direction:
When the arrow points upward, the blood flow spectrum displayed above the baseline is forward, and below is reverse. When the arrow points downward, the blood flow spectrum displayed above the baseline is reverse, and below is forward.
M-Wave Window:
After clicking the button, a progress bar appears in the lower right corner of the interface, indicating that the system is automatically searching for blood vessels. This process automatically adjusts the depth and freezes the spectrum when an optimal setting is reached.
Spectrum Playback:
After the image is frozen, clicking the playback function key replays the recent detection process. Clicking again stops the playback.
Data Backup and Recovery:
As the amount of data stored in the TCD instrument increases, users may temporarily delete some data but still wish to review it later. In such cases, users can utilize the data backup function to back up current user data to other partitions of the hard drive or other storage devices.
If stored data is corrupted or lost, or if users need to review previously saved examinee data, they can use the data recovery function to restore the data from the backup to the software installation location. The data can then be viewed within the software.