Clinical assessment of a new real time 3D quantitative coronary angiography system: Evaluation in stented vessel segments

Gradaus, Rainer; Mathies, Klara; Breithardt, Günter; Böcker, Dirk

doi:10.1002/ccd.20775

Cited by 53 publications

(37 citation statements)

References 37 publications

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“…However in the CardiOp-B system, the range of these correlations were slightly less (0.78-0.87) compared with the CAAS 5 system (0.97-0.99). In addition, systematic underestimation of luminal diameter measurements has been previously reported for the CardiOp-B system QCA system [11]. In assessing the minimum LD (MLD), greater precision and accuracy was observed with the CAAS 5 arguably because of two observations in the CardiOp-B system varying markedly from the true value (D min LD 47% and 25%) in comparison to one observation (D min LD 34%) in the CAAS 5 system.…”

Section: Discussionmentioning

confidence: 88%

“…3D QCA has been shown in phantom models [10] as well as in stented vessel segments [11], and complex lesions like bifurcations [12] to have a closer correlation to the true vessel's dimensions than 2D QCA. Moreover in conventional angiography, overlapping vessel can impair the optimal visualization of a lesion and if the lesion is eccentric then it may be missed altogether [13].…”

Section: Discussionmentioning

confidence: 99%

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First direct in vivo comparison of two commercially available three‐dimensional quantitative coronary angiography systems

Ramcharitar

Daeman

Patterson

et al. 2007

Cathet Cardio Intervent

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Aim: The in vivo comparison of the accuracy of two 3-dimensional quantitative coronary angiography (QCA) systems. Methods: Precision-drilled plexiglass phantoms with five different luminal diameters (0.5-1.9 mm) were percutaneously inserted into the coronary arteries of four Yorkshire pigs. Twenty-one angiographic images of these stenotic phantoms were acquired for in vivo validation testing. Quantitative assessments of the minimum, maximum, and mean luminal diameters together with the minimum luminal area were determined using two 3D QCA systems, the CardiOp-B 1 and CAAS 5. Results: The CardiOp-B system significantly underestimated the minimum luminal diameter MLD whilst both systems significantly overestimated the maximum luminal diameter at the minimal luminal area (MLA) over the phantom's true value. The CAAS 5 system had a greater degree of accuracy/mm (mean difference 5 0.01 vs. 0.03) and precision/mm (SD 5 0.09 vs. 0.23) than the CardiOp-B in assessing the minimal LD. An increased precision/mm (SD 5 0.01 vs. 0.29) and accuracy/mm (mean difference 5 0.03 vs. 0.11) in the mean LD was observed with the CAAS 5. In comparing the MLA/mm 2 the CAAS 5 was more precise/mm 2 (SD 5 0.14 vs. 0.55) and accurate/mm 2 (mean difference 5 0.12 vs. 0.02) to the true phantom MLA compared to the CardiOp-B system. Conclusions: In a 21 phantom study, the CAAS 5 3D QCA system had a greater degree of accuracy and precision in both the luminal and area measurements than the CardiOp-B 3D QCA system. '

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Section: Discussionmentioning

confidence: 88%

Section: Discussionmentioning

confidence: 99%

First direct in vivo comparison of two commercially available three‐dimensional quantitative coronary angiography systems

Ramcharitar

Daeman

Patterson

et al. 2007

Cathet Cardio Intervent

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“…more precise stent selection, tackling chronic total occlusions, remote or robotic guidance of PCI). But only recently have the advances in computer power made simple and fast 3-dimensional rendering of angiographic images possible [6][7][8][9][10]. Three-dimensional angiography proved useful in assessment of one of the most complex interventional challenges, left main coronary anatomy [20].…”

Section: Analityków (Zmienność Pomiędzy Obserwatorami) Wykres Ilustrmentioning

confidence: 99%

“…Although 2D QCA has been well validated in phantoms and its reproducibility is well established, foreshortening of the arterial segment of interest in a two-dimensional image continues to be a significant problem when determining lesion length, eccentricity, and tortuosity [2,3]. Due to these limitations, coronary angiography modeling using threedimensional QCA on the basis of images and structures visualized and captured during standard and rotational angiography was introduced [4,5] and is currently being evaluated for its utility in clinical practice [6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Comparison of 3-dimensional and 2-dimensional quantitative coronary analysis measuring intracoronary lengths in patients undergoing diagnostic coronary angiography

Legutko¹,

Rzeszutko²,

Partyka³

et al. 2012

pwki

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A b s t r a c tAim: To determine if three-dimensional quantitative coronary angiographic analysis (3D QCA) provides an advantage over twodimensional (2D QCA) by increasing accuracy and precision of length measurements through compensating for foreshortening inherent to 2D images.Material and methods: A total of 800 inter-marker length measurements were performed (8 per wire, 5-40 mm) with novel 3D software and standard 2D software and compared with the true lengths of the inter-marker distances on the wire in coronary vessels of 21 patients recruited.Results: 2D QCA generally underestimated true length in comparison to 3D, and the discrepancy increased with absolute length. In contrast, 3D QCA showed a minimal difference from true length over the examined range of lengths.Conclusions: 3D QCA minimizes errors in length measurements associated with foreshortening, shows minimal difference from true length, and performs significantly better in comparison to 2D QCA. The advantage of 3D QCA is more pronounced at longer lengths.Key words: 3D, 2D, quantitative coronary angiography (QCA) S t r e s z c z e n i e Cel: Określenie, czy trójwymiarowa, ilościowa analiza angiograficzna naczyń wieńcowych (3D QCA) ma przewagę nad standardową oceną dwuwymiarową (2D QCA) polegającą na zwiększeniu dokładności i precyzji pomiarów długości oraz wyeliminowaniu skrócenia typowego dla analiz 2D.Materiał i metody: Wykonano ogółem 800 pomiarów długości odcinka pomiędzy markerami na prowadnikach wieńcowych wprowadzonych do tętnicy wieńcowej (8 długości na prowadniku w zakresie 5-40 mm) z zastosowaniem oprogramowania 3D i standardowego oprogramowania 2D w porównaniu ze znanymi odległościami znaczników na prowadniku wieńcowym u 21 pacjentów poddanych koronarografii.Wyniki: W analizie 2D QCA pomiary były z reguły zaniżone w stosunku do rzeczywistej długości mierzonego odcinka, przy czym wielkość błędu wzrastała wraz z bezwzględną długością mierzonego odcinka. Analizy za pomocą 3D QCA wykazały minimalne różnice pomiarów w stosunku do rzeczywistych odległości pomiędzy markerami w całym zakresie badanych długości.

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“…However, the systems differ in their calibration methods. CardiOp-B requires the operator to input the size of the catheter in the image into the program, whereas the Medis and CAAS 5 systems automatically calibrates the images using DICOM (Digital Imaging and Communications in Medicine) information embedded in the angiographic images (Gradaus et al, 2006;Ramcharitar et al, 2008a). Once the image is created, operators can manipulate the images by zooming in or rotating the image.…”

Section: Three-dimensional Qcamentioning

confidence: 99%

Quantitative Coronary Angiography in the Interventional Cardiology

Tomasello¹,

Costanzo²,

Galassi³

2011

Advances in the Diagnosis of Coronary Atherosclerosis

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Clinical assessment of a new real time 3D quantitative coronary angiography system: Evaluation in stented vessel segments

Cited by 53 publications

References 37 publications

First direct in vivo comparison of two commercially available three‐dimensional quantitative coronary angiography systems

First direct in vivo comparison of two commercially available three‐dimensional quantitative coronary angiography systems

Comparison of 3-dimensional and 2-dimensional quantitative coronary analysis measuring intracoronary lengths in patients undergoing diagnostic coronary angiography

Quantitative Coronary Angiography in the Interventional Cardiology

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