Parks Model 1052-C Vascular Mini-Lab - RefurbishedNote: Use of a directional Doppler is required for reimbursement. Model 1052 C features a built in recorder to keep track of measurements. It also has an AC coupled photoplethysmograph (PPG) for digital pulses and a DC coupled Photoplethysmograph for venous reflux evaluation. This dual frequency Doppler operates at a nominal 8 MHz and 4 MHz frequency. The 8 MHz Doppler is sufficient for most vascular studies while the 4 MHz is capable of capturing