ECG-gated 3D-rotational coronary angiography (3DRCA)

Rasche, Volker; Buecker, Arno; Graß, Michael; Koppe, R.; Beek, John Op de; Bertrams, R.; Suurmond, R.; Kuehl, Harald P; Guenther, Rolf W.

doi:10.1007/978-3-642-56168-9_138

Cited by 17 publications

(11 citation statements)

References 3 publications

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“…Many approaches propose to restraint the sinogram to the angiograms that were acquired at given cardiac phase [8], [9] or to phases that remain close to a reference phase [38]. This leads to few views tomographic reconstructions and often suffers from strong artifacts due to lack of data.…”

Section: B Motion Compensated Tomographymentioning

confidence: 99%

“…In X-ray coronary angiography, the introduction of the digital flat panel [6] combined with a rotational acquisition mode [7] allowed for the proposal of new techniques in coronary artery modeling. The number of projections used for reconstruction can be increased by selecting the ones that correspond to the same cardiac time in a rotational acquisition, as in [8], [9], but most of the acquired images are discarded in such a procedure. By selecting projections close to a cardiac time, the number of used projections increases [10] but reconstruction artifacts may appear due to motion, and a significant number of acquired images are still discarded.…”

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confidence: 99%

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Reconstruction of coronary arteries from a single rotational X-ray projection sequence

Blondel

Malandain

Vaillant³

et al. 2006

IEEE Trans. Med. Imaging

136

159

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Abstract-Cardiovascular diseases remain the primary cause of death in developed countries. In most cases, exploration of possibly underlying coronary artery pathologies is performed using X-ray coronary angiography. Current clinical routine in coronary angiography is directly conducted in 2-D projection images from several static viewing angles. However, for diagnosis and treatment purposes, coronary artery reconstruction is highly suitable. The purpose of this study is to provide physicians with a 3-D model of coronary arteries, e.g. for absolute threedimensional measures for lesion assessment, instead of direct projective measures deduced from the images, which are highly dependent on the viewing angle. In this article, we propose a novel method to reconstruct coronary arteries from one single rotational X-ray projection sequence. As a side result, we also obtain an estimation of the coronary artery motion. Our method consists of 3 main consecutive steps: (1) 3-D reconstruction of coronary artery centerlines, including respiratory motion compensation, (2) coronary artery 4-D motion computation, and (3) 3-D tomographic reconstruction of coronary arteries, involving compensation for respiratory and cardiac motions. We present some experiments on clinical datasets, and the feasibility of a true 3-D Quantitative Coronary Analysis is demonstrated.

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Section: B Motion Compensated Tomographymentioning

confidence: 99%

mentioning

confidence: 99%

Reconstruction of coronary arteries from a single rotational X-ray projection sequence

Blondel

Malandain

Vaillant³

et al. 2006

IEEE Trans. Med. Imaging

136

159

View full text Add to dashboard Cite

show abstract

“…Tomographic reconstruction of the coronary arteries can be performed from rotational X-ray sequences. The heart's motion necessitates the use of special reconstruction methods like electrocardiogram (ECG) -gated reconstruction [18][19][20], motion-compensated reconstruction using a precomputed motion vector field [16,19], or simultaneous reconstruction of absorption coefficients and object motion (e.g., [21]). Retrospectively ECG-gated reconstruction is the conceptually most simple and currently the most readily available of these reconstruction methods.…”

Section: Introductionmentioning

confidence: 99%

Automatic optimum phase point selection based on centerline consistency for 3D rotational coronary angiography

et al. 2008

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Objective The quality of three-dimensional (3D) reconstructions of the coronary arteries from rotational coronary angiography depends on the selected phase point. Inconsistencies in the projection data, due to heart motion, degrade the image quality. Here, a method for the automatic selection of the optimum phase points for reconstruction is presented. Methods The method aims at determining heart phases with minimum inconsistency of the motion state in the selected projection data. This is achieved by calculating an error measure which describes the inconsistency of the vessel centerline geometry in three dimensions for all cardiac phases. The phases with minimum inconsistency are then selected as optimum reconstruction phases. The method's feasibility was tested on 22 clinical cases. One late-diastolic and one end-systolic optimum phase were determined automatically for each case. For comparison, three observers visually determined the optimum phases. Results Overall, 82% of the 44 automatically determined phases delivered optimum image quality, only 5% showed considerably lower quality than the visually determined optimum phase. For all 22 cases at least one of the two automatically determined phases yielded optimum quality. Conclusion In a first test the method proved to robustly determine optimum reconstruction phase points.

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“…Contrary to recent developments in CT, reconstructions cannot be performed from a reduced set of views (selected from ECG analysis) because the rotation speed of the C-arm is much slower than CT gantries rotation speed. Some recent feasibility studies attempted to adapt the CT ECG-gated approach [9], but required an acquisition protocol that is difficult to apply to patients, because of the dose of X-ray and the amount of contrast media that were involved.…”

Section: Introductionmentioning

confidence: 99%

4-D Tomographic Representation of Coronary Arteries from One Rotational X-Ray Sequence

Blondel

Malandain

Vaillant

et al. 2003

Lecture Notes in Computer Science

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Abstract. We present a complete and fully automatic method to compute a 4-D tomographic representation of coronary arteries from one single rotational monoplane X-ray sequence. The major steps of our method are the following: (1) images filtering, (2) arteries segmentation, (3) arteries matching and reconstruction, (4) parametric deformation field computation, and (5) deformation-compensated tomographic reconstruction.Steps (2) and (3) involve only a few frames, acquired at the same cardiac cycle phase, while the steps (1), (4), and (5) use the frames acquired at all cardiac cycle phases. The originality of the presented work mainly lies in the last two steps that result in a 4-D tomographic representation, allowing for the visualization of coronary arteries anatomy from any point of view, and at any cardiac cycle time. Experiments have been conducted on one synthetic data set and on 10 patient data sets.

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ECG-gated 3D-rotational coronary angiography (3DRCA)

Cited by 17 publications

References 3 publications

Reconstruction of coronary arteries from a single rotational X-ray projection sequence

Reconstruction of coronary arteries from a single rotational X-ray projection sequence

Automatic optimum phase point selection based on centerline consistency for 3D rotational coronary angiography

4-D Tomographic Representation of Coronary Arteries from One Rotational X-Ray Sequence

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