Ventilation and perfusion imaging by electrical impedance tomography: a comparison with radionuclide scanning

Electrical impedance tomography (EIT) is a technique that makes it possible to measure ventilation and pulmonary perfusion in a volume that approximates to a 2D plane. The possibility of using EIT for measuring the left-right division of ventilation and perfusion was compared with that of radionucli...

Full description

Saved in:
Bibliographic Details
Published in:Physiological measurement 1998-11, Vol.19 (4), p.481-490
Main Authors: Kunst, P W A, Noordegraaf, A Vonk, Hoekstra, O S, Postmus, P E, Vries, P M J M de
Format: Article
Language:English
Subjects:
Adult
Aged
Electric Impedance
Female
Humans
Lung Neoplasms - diagnostic imaging
Lung Neoplasms - physiopathology
Male
Middle Aged
Radionuclide Imaging
Radiopharmaceuticals
Reproducibility of Results
Technetium Tc 99m Aggregated Albumin
Tomography - instrumentation
Ventilation-Perfusion Ratio
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Electrical impedance tomography (EIT) is a technique that makes it possible to measure ventilation and pulmonary perfusion in a volume that approximates to a 2D plane. The possibility of using EIT for measuring the left-right division of ventilation and perfusion was compared with that of radionuclide imaging. Following routine ventilation (81mKr) and perfusion scanning (99mTc-MAA), EIT measurements were performed at the third and the sixth intercostal level in 14 patients with lung cancer. A correlation (r = 0.98, p < 0.005) between the left-right division for the ventilation measured with EIT and that with 81mKr was found. For the left-right division of pulmonary perfusion a correlation of 0.95 (p < 0.005) was found between the two methods. The reliability coefficient (RC) was calculated for estimating the left-right division with EIT. The RC for the ventilation measurements was 94% and 96% for the perfusion measurements. The correlation analysis for reproducibility of the EIT measurements was 0.95 (p < 0.001) for the ventilation and 0.93 (p < 0.001) for the perfusion measurements. In conclusion, EIT can be regarded as a promising technique to estimate the left-right division of pulmonary perfusion and ventilation.
ISSN:0967-3334
1361-6579
DOI:10.1088/0967-3334/19/4/003