Radiology, Vol 138, 477-481, Copyright © 1981 by Radiological Society of North America
A miniature cadmium telluride detector module for continuous monitoring of left-ventricular function
PB Hoffer, HJ Berger, J Steidley, AF Brendel, A Gottschalk and BL Zaret
The authors describe a miniature cadmium telluride (CdTe) detector module
for continuous monitoring of ventricular function using an equilibrium
radionuclide blood-pool label. The detector and collimator are small,
light, and suitable for direct attachment to the chest wall. Clinical
studies in 18 patients using a prototype system demonstrated reasonably
good correlation with left-ventricular ejection fractions (LVEF) determined
by first-pass studies performed with a multicrystal scintillation camera (r
= 0.74) and gated equilibrium studies performed with a computerized sodium
iodide (Nal) probe (r = 0.76). The CdTe device may prove to be useful in
patients in intensive and coronary care units as well as in ambulatory
patients.
