Technical consideration for a new X-ray video progressive scanning system for cardiac catheterization.
The widespread growth of interventional angiographic procedures has expanded the use of X-ray video systems. Reduced radiation exposure to the patient and staff has been recently reported by implementing a new pulsed progressive scanning video system. We have shown that this system, which enables the pulsing of the X-ray generator at 30 pulses per second, results in a 50% reduction in radiation exposure. The technical parameters and implementation of a progressive scanning video system are discussed. Image quality, temporal and spatial resolution, and signal-to-noise ratio (SNR) were assessed using conventional interlaced and progressive video scanning. These comparisons documented improved resolution, no degradation of ejection fraction measurements, improved clinical images, and a 1.0-dB improvement in the SNR with the progressive scanning. Progressive scanning video systems reduce radiation exposure and provide an objective improvement in image quality over conventional scanning video systems.
Wondrow
M A
MA
Mayo Clinic, Department of Diagnostic Radiology, Rochester, MN 55905.
Bove
A A
AA
Holmes
D R
DR
Gray
J E
JE
Julsrud
P R
PR
D000792:Angiography / Q000379:methods*; D006328:Cardiac Catheterization / Q000379:methods*; D006801:Humans; D011829:Radiation Dosage; D011856:Radiographic Image Enhancement; D014741:Video Recording / Q000379:methods