Abstand zw. exponiertem Objekt und Expositionsquelle
0 mm
Aufbau
A semi-rigid 3.58 mm diameter coaxial microprobe delivering the MW energy was lightly pressed against the sinus venosus, i.e. the pacemaker of the frog's heart.
Zusatzinfo
Two small alligator clips were used for ECG electrodes, one connected on the right side of the neck and the other one on the left thigh. The MWpulse was triggered by the ECG R-wave and was delivered to the heart on the rising phase of the R-wave near its peak.
Abstand zw. exponiertem Objekt und Expositionsquelle
1 mm
Aufbau
The heart was placed ventral side up in a plastic case filled with aerated frog Ringer's solution where it rested lightly on two parallel stainless steel needles used as ECG electrodes. It was positioned with the sinus venosus against a 1-mm thick Lucite window, and the coaxial microprobe was lightly pressed against the outside of the window.
Zusatzinfo
The MWpulse was triggered either by the ECG P-wave or by the R-wave.
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