Technical considerations for cardiac laboratory high‐definition video systems

Gray, Joel E.; Wondrow, Merrill A.; Smith, Hugh C.; Holmes, David R.

doi:10.1002/ccd.1810100114

Cited by 18 publications

(4 citation statements)

References 10 publications

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“…In this study we are comparing two systems: a conventional interlaced scanned video fluoroscopic-cine X-ray system, as previously described [2], and a new progressively scanned system. We have utilized pulsed X-ray systems for both fluoroscopic and cine imaging in our cardiac laboratory for the past 14 years.…”

Section: Video Scanning Principlesmentioning

confidence: 99%

Technical consideration for a new X‐ray video progressive scanning system for cardiac catheterization

Wondrow

Bové

Holmes

et al. 1988

Cathet. Cardiovasc. Diagn.

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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.

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Section: Video Scanning Principlesmentioning

confidence: 99%

Technical consideration for a new X‐ray video progressive scanning system for cardiac catheterization

Wondrow

Bové

Holmes

et al. 1988

Cathet. Cardiovasc. Diagn.

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“…The potential for using the high-line rate, high bandwidth (1,023-line, 10 MHz) video systems in diagnostic imaging to improve cardiac image quality has been debated [ 3 ] . These systems do provide improved image quality under studio lighting conditions and with relatively highcontrast subject matter.…”

Section: Video Systemsmentioning

confidence: 99%

Isn't it time to abandon cine film?

Holmes

Wondrow

Gray

1990

Cathet. Cardiovasc. Diagn.

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Cine has served our needs well since the early 1950s. For the first time, it allowed recording of motion studies of the cardiac structures on film. The cine technique has been standardized over the years, both the camera and the display. Cine filming techniques, however, have not advanced, except for new film products with faster emulsions and better-quality films. Video electronic imaging has made rapid advancements. These were prompted by the broadcast industry when the requirements for color were developed in the 1960s and by the advent of new recording techniques that provided a very stable video time base from analog tape recorders. The medical field has been able to capitalize on these developments and to produce some of our own that have not been applied in the broadcast world. These include pulsed progressive 525-line video acquisition of cardiac images in the cardiac catheterization laboratory. We also have been able to capitalize on the improved detector technology that the broadcast world has developed, such as the plumbicon pickup tubes, which produce images with very little lag and so provide images with improved resolution. These developments also have enabled us to reduce radiation to both the patient and the laboratory personnel, especially with implementation of the pulsed progressive acquisition, with which the dose has been reduced 50%. With the advent of interventional procedures in the cardiac catheterization laboratory, the need to assess images immediately cannot be fulfilled by cine filming because of the requirement for the processing of the film with its inherent delays. Quantification of cardiac structures is required to assess the outcome of interventional techniques.(ABSTRACT TRUNCATED AT 250 WORDS)

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“…Because of the potential risk from the retained guide wire, cardiac catheterization was undertaken in an effort to retrieve it. Routine fluoroscopy and high-resolution videometry [7,8] documented that the guide wire extended from the right ventricular acute marginal branch back through the complete occlusion and into the ascending aorta. An approximately 5-cm segment of the guide wire protruded from the orifice of the right coronary artery into the ascending aorta (Fig.…”

Section: Treatmentmentioning

confidence: 99%