The VTI Selectable Depth Doppler System is a 20 MHz Doppler system which allows the surgeon to interrogate superficial vessels using variable depth of tissue penetration.
The VTI Selectable Depth Doppler System is a sound breakthrough in the treatment of acute peptic ulcer hemorrhage. By incorporating a probe that can be passed down a 2.8mm endoscope channel, this system identifies persistent blood flow in an ulcer base after hemostatic treatment. Clinical studies demonstrate that ulcers that are Doppler positive after treatment are at significantly increased risk for recurrent hemorrhage. With this previously unattainable marker, endoscopists can now make immediate clinical judgments about the need for additional therapy.
Doppler examination of the ulcer reveals a strong arterial signal within this lesion. Use of the Doppler probe allows the endoscopist to map out the course of the underlying artery. The vessel can be “heard” just above the pigmented region, following a 9 o’clock to 1 o’clock course within the ulcer base. This “acoustic map” allows the endoscopist to target therapy appropriately.