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

Wondrow, Merrill A.; Bové, Alfred A.; Holmes, David R.; Gray, Joel E.; Julsrud, Paul R.

doi:10.1002/ccd.1810140215

Cited by 14 publications

(2 citation statements)

References 9 publications

(5 reference statements)

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“…This results in a more accurate assessment of the AVP time. Cardiac catheterization labs, which have encountered the same problems, have also been using non-interlaced video technology for some years with increased image quality and less motion artifact [3,7,8,10,14]. Another example of this technology being used is in the study of the motion of human sperm [6].…”

Section: Discussionmentioning

confidence: 98%

“…This means that the two fields are separated in time by a very small amount, and motion blurring is introduced in rapidly moving objects [3,10]. Cardiologists encountered the same problem with the development of percutaneous transluminal coronary angioplasty (PTCA) [3,8,10,14]. Other problems derive from the stretching and wear and tear that videotapes go through in everyday use, which can distort and even break up the picture [9].…”

Section: Introductionmentioning

confidence: 99%

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Improving the analysis of arteriovenous passage times

Pesavento

Harris

Cole

et al. 2002

Graefe's Arch Clin Exp Ophthalmol

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Section: Discussionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Improving the analysis of arteriovenous passage times

Pesavento

Harris

Cole

et al. 2002

Graefe's Arch Clin Exp Ophthalmol

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Fluoroscopic image quality in the film and filmless eras: A standardized comparison performed in coronary interventional facilities

Laskey

Wondrow²,

Chambers

2003

Cathet Cardio Intervent

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One hundred and one coronary interventional systems (45 primarily film-based predigital systems, labeled group 1; and 56 filmless digital systems, labeled group 2) were examined over a 5-year period using a standardized imaging phantom. Fluoroscopic image intensifier input dose, high-contrast spatial resolution, low-contrast sensitivity, and static and dynamic low-contrast resolution were assessed under several conditions simulating patient body habitus. The distribution of spatial resolutions in group 2 facilities favored higher line pair resolution over group 1 (P = 0.01). Contrast sensitivity (smallest-diameter hole visualized) was consistently and significantly enhanced with the use of digital imaging under both medium (P = 0.001) and large (P = 0.002) patient habitus simulations. Low-contrast video resolution (number of wires seen) under static (P = 0.007) and dynamic (P = 0.002) conditions was also improved in the digital facilities. However, image intensifer input dose was similar in both groups (group 1 median dose, 23 mR/min; group 2 median dose, 26 mR/min; P = NS). Fluoroscopic spatial resolution in digital filmless laboratories was significantly improved when compared to predigital, film-based laboratories. Low-contrast sensitivity and low- contrast video resolution under both static and dynamic conditions were also significantly improved in the digital laboratories. Notably, the input dose of radiation required to produce these improved fluoroscopic images was similar between groups.

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Balloon angioplasty of chronic total coronary artery occlusions: What does it cost in radiation exposure, time, and materials?

Bell

Berger

Menke

et al. 1992

Cathet. Cardiovasc. Diagn.

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Coronary angioplasty of chronic total occlusions is known to have a lower success rate and higher frequency of restenosis than angioplasty of subtotal stenoses, but there are no data describing the additional time, resources, and radiation exposure associated with this procedure. The purpose of this study was to compare these features in 90 consecutive patients who underwent angioplasty of a total occlusion (group 1) to those of 100 consecutive patients who underwent angioplasty of a subtotal stenosis (group 2). Angioplasty was successful in 60% of group 1 and in 94% of group 2 patients. Procedures were longer in group 1 and significantly more guide catheters, angioplasty balloon catheters, and guide wires were required per patient compared to group 2. The volume of contrast media used in each group was similar. Estimates of radiation entry exposure, calculated from fluoroscopy exposure times and using data from phantom studies, were 53 R (roentgen) per patient in group 1 vs. 34 R in group 2. These procedures were performed using pulsed progressive fluoroscopy; radiation exposure would be considerably higher using conventional fluoroscopic systems. Cineangiographic radiation exposures were similar for each group and accounted for an average additional exposure of 14-22 R for each procedure. Total radiation exposure was reduced in both groups when the angioplasty procedure was combined with the diagnostic angiogram. These observations should be considered when dilation of a total occlusion is planned. Efforts to reduce the amount of radiation exposure should remain a priority in interventional catheterization laboratories.

show abstract

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

Cited by 14 publications

References 9 publications

Improving the analysis of arteriovenous passage times

Improving the analysis of arteriovenous passage times

Fluoroscopic image quality in the film and filmless eras: A standardized comparison performed in coronary interventional facilities

Balloon angioplasty of chronic total coronary artery occlusions: What does it cost in radiation exposure, time, and materials?

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