a Initial position of the probe with respect to the target cones.
The position of the probe was precisely maintained between IF measurement and calibration.
In the test the position of the probe was fixed to simulate monitoring.
Position of the patient, sites of measures, position of the probe and pressure applied on the skin were standardized.
To save position of the probe of the ultrasound device once, the probe had to be connected and calibrated with a localization transmitter.
Two important technical aspects should be discussed further: the position of the probe on the forearm and the duration of the thermal challenge.
In the frequency domain analysis, the frequency spectrum characteristic curve shows that the change of the main frequency is in good agreement with the position of the probe.
The functional position of the probe was tested by briefly introducing norepinephrine into the probe producing an increase in heart rate of more than 30 beats/min.
We also chose this strategy of control because up to this point in the design, there is no camera installed on the probe and the operator needs to keep sight of the position of the probe.
The current position of the probe is encoded by the stage and used to relate ultrasound and photoacoustic signals to the corresponding region of interest of the suspicious finger joint.
However, this viscosity effect makes detection sensitivity vary throughout the mobile phase gradient, due to moving the optimized position of the probe beam in relation to the analyte concentration gradient being probed.
