
Example
Of Electronic Beam Imaging
The
Imatron Electron Beam Tomography (EBT) Scanner combines
advanced science and technology to create a truly innovative
diagnostic imaging system. Imatron's patented EBT Technology
and unique system architecture, offer diagnosticians scan
times as fast as 50 and 100 milliseconds. In addition to
imaging of all body organs, EBT scan speeds allow diagnosticians
to image the beating heart, evaluate physiologic and blood
flow analysis, and to perform other tomographic examinations
where scan speed is essential.
Utilizing
proprietary EBT technology, a powerful beam is generated
and then focused onto one of four tungsten target rings
positioned beneath the patient. Each 210 degree sweep of
the electron beam produces a continuos 30 degree fan beam
of x-rays that pass through the patient to a stationary
array of detectors which, in turn, generate the tomographic
data needed to produce cross-sectional anatomical images.
The
Imatron EBT provides two distinct scanning modes; MultiSlice
mode and Single Slice mode scanning. These two scanning
modes, with scan times of 50 to 100 milliseconds provide
the diagnostician the imaging versatility necessary to obtain
high quality anatomical images.
Electron
Beam Imaging
- In MultiSlice mode scanning, the electron beam sweeps
along one tofour target rings in rapid succession covering
up to 8 centimeters of the body without moving the patient.
This unique functionality along with real time ECG triggering
provides cine and flow capabilities. This very fast scanning
speed and temporal resolution is ideal for evaluating ventricular
function, joint motion, airway physiology and blood flow
analysis. The exceptional scan speed positions the EBT scanner
to be the modality of choice when imaging cardiac, pediatric,
trauma and geriatric patients where speed of acquisition
is critical.
Single Slice mode scanning utilizes 100 millisecond sweeps
along one of the four target rings. This mode provides two
distinct acquisition features; Continuos Volume Scanning
(CVS) and Step Volume Scanning (SVS). CVs mode provides
a volumetric acquisition that can be reconstructed in seamless
3-D images. In CVs mode data is acquired by moving the patient
continuously through the x-ray beam path. In SVS mode timed
scans are acquired while the patient moves incrementally
through the scanner. In SVS mode diagnosticians can utilize
real time ECG triggering to provide a volume acquisition
of the heart at a prescribed phase of the cardiac cycle.
The ability to ECG trigger the scanner at high heart rates,
without skipping a beat, provides extremely temporal resolution
and high patient compliance without exposure to unnecessary
dose.