An assessment of dynamic images by applied potential tomography for monitoring pulmonary perfusion.
Applied potential tomography (APT) images can be collected at a rate of 24 per second and data collection can be synchronised with the ECG. Images thus obtained from a thoracic plane allow the spatial separation of impedance changes originating in the heart, aorta and lungs and have raised the possibility of detecting pulmonary perfusion abnormalities from the cardiac-related impedance changes in the lungs. We have recently started a study to compare isotope perfusion scans with APT images and present here a few initial examples which suggest that further investigation of this field may prove rewarding.
McArdle
F J
FJ
Sheffield University, Department of Medical Physics and Clinical Engineering, Royal Hallamshire Hospital, UK.
Suggett
A J
AJ
Brown
B H
BH
Barber
D C
DC
D004566:Electrodes; D006801:Humans; D008168:Lung / Q000033:anatomy & histology*; D011652:Pulmonary Circulation; D011655:Pulmonary Embolism / Q000175:diagnosis*; D014054:Tomography / Q000379:methods