INFLUENCE OF ECG-TRIGGERED DATA-ACQUISITION ON RELIABILITY FOR CAROTID PLAQUE VOLUME MEASUREMENTS WITH A MAGNETIC SENSOR 3-DIMENSIONAL ULTRASOUND SYSTEM
A. Delcker et C. Tegeler, INFLUENCE OF ECG-TRIGGERED DATA-ACQUISITION ON RELIABILITY FOR CAROTID PLAQUE VOLUME MEASUREMENTS WITH A MAGNETIC SENSOR 3-DIMENSIONAL ULTRASOUND SYSTEM, Ultrasound in medicine & biology, 24(4), 1998, pp. 601-605
Citations number
33
Categorie Soggetti
Radiology,Nuclear Medicine & Medical Imaging",Acoustics
Three-dimensional (3D) ultrasound reconstructions of the carotid arter
ies are based on multiple sections of two-dimensional data. Some 3D sy
stems use an electrocardiography (ECG)-triggered data acquisition for
3D reconstructions of pulsatile vessels such as carotid arteries. No s
ystematic comparison of 3D data, acquired with and without ECG trigger
ing, has been reported, We used a new magnetic sensor system allowing
freehand scanning for data acquisition, Our aim was to test the effect
of ECG triggering on the reliability of plaque volume measurements in
the carotid arteries. Data acquisition in the carotid arteries in 25
patients tone plaque from each patient) was performed using two differ
ent procedures for data acquisition: 1) a magnetic sensor system for a
data acquisition without EGG-triggering, and 2) a magnetic sensor sys
tem with EGG-triggered data acquisition, All plaque volumes were measu
red using manual tracing of the outlines of the plaques, The following
reliability data (mean values) were obtained: magnetic sensor system
without ECG triggering: intrareader variability 13.3%, interreader var
iability 16.7%, follow-up variability 16.3%; magnetic sensor system wi
th EGG triggering: intrareader variability 4.6%, interreader variabili
ty 4.5%, follow-up variability 5.2%, Carotid plaque volume measurement
s obtained using a magnetic sensor system with freehand scanning and E
CG triggering is highly reliable, ECG triggering is necessary, because
a magnetic sensor system without ECG triggering resulted in reduced r
eliability for plaque volume measurements. (C) 1998 World Federation f
or Ultrasound in Medicine & Biology.