What question did this study set out to answer?

To validate online digital and offline cinefilm geometric coronary artery measurements against known radiolucent stenosis phantoms in a porcine model.

September 1, 1992Catheterization and Cardiovascular Diagnosis

In‐vivo validation of on‐line and off‐line geometric coronary measurements using insertion of stenosis phantoms in porcine coronary arteries

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To validate online digital and offline cinefilm geometric coronary artery measurements against known radiolucent stenosis phantoms in a porcine model.
Inserted radiolucent stenosis phantoms of known diameters (0.5, 0.7, 1.0, 1.4, and 1.9 mm) percutaneously into swine coronary arteries with concurrent recording via the Philips Digital Cardiac Imaging System (DCI) and cinefilm.
Calibrated image acquisition systems using either the guiding catheter diameter or the isocenter technique.
Compared minimal luminal diameter (MLD) measurements from 20 corresponding cineframes across CAAS and DCI systems against true phantom diameters.
CAAS achieved an accuracy of -0.07 mm and precision of 0.21 mm (r = 0.91; SEE = 0.19) with isocenter calibration, and an accuracy of 0.09 mm and precision of 0.23 mm (r = 0.89; SEE = 0.19) with catheter calibration.
DCI showed an accuracy of 0.08 mm and precision of 0.15 mm (r = 0.96; SEE = 0.14) with isocenter calibration, and an accuracy of 0.18 mm and precision of 0.21 mm (r = 0.92; SEE = 0.17) with catheter calibration.
DCI significantly underestimated true phantom diameters under both isocenter calibration (p < 0.05) and catheter calibration (p < 0.001).

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Implication

In vivo validation study demonstrates high accuracy of digital and cineangiographic coronary measurements in swine, confirming the clinical reliability of real-time digital software.

Cite This Study

Haase et al. (1992) studied this question.

synapsesocial.com/papers/69f3ee19dc238f81977995da https://doi.org/10.1002/ccd.1810270106

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Implication

In vivo validation study demonstrates high accuracy of digital and cineangiographic coronary measurements in swine, confirming the clinical reliability of real-time digital software.

In‐vivo validation of on‐line and off‐line geometric coronary measurements using insertion of stenosis phantoms in porcine coronary arteries

Key Points

Discussion

Implication

Cite This Study

In‐vivo validation of on‐line and off‐line geometric coronary measurements using insertion of stenosis phantoms in porcine coronary arteries

Key Points

Discussion

Implication

Cite This Study

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