1
|
Numerical study on flow topology and hemodynamics in tortuous coronary artery with symmetrical and asymmetrical stenosis. Biocybern Biomed Eng 2021. [DOI: 10.1016/j.bbe.2020.12.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
|
2
|
Goerlich E, Mukherjee M, Schar M, Brown TT, Bonanno G, Weiss RG, Hays AG. Noninvasive detection of impaired pulmonary artery endothelial function in people living with HIV. AIDS 2020; 34:2231-2238. [PMID: 32826392 DOI: 10.1097/qad.0000000000002671] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
OBJECTIVE People living with HIV (PLWH) have an increased risk of pulmonary vascular disease and pulmonary hypertension. Endothelial cell dysfunction is thought to contribute, but human studies have been limited by the invasive nature of conventional measures of pulmonary artery endothelial function (PAEF). We report here a noninvasive MRI approach to measure nitric oxide mediated PAEF by quantifying changes in pulmonary artery area and blood flow during isometric handgrip exercise (IHE), an endothelial nitric oxide dependent stressor. We used this to test the hypothesis that PLWH have impaired PAEF, even before development of pulmonary hypertension. DESIGN A prospective cohort study. METHODS We enrolled 25 HIV-positive viral-suppressed individuals on stable antiretroviral therapy without known or suspected pulmonary hypertension and 19 matched seronegative control individuals (HIV-negative). Pulmonary artery area and blood flow changes in response to IHE were measured with noncontrast MRI. Data previously collected during nitric oxide-synthase inhibition were analysed to determine the role of nitric oxide in the pulmonary artery response to IHE. RESULTS Seronegative individuals exhibited the anticipated PA vasodilatory response to IHE, but this was completely absent in HIV-positive individuals who exhibited an impaired area change (-1.1 ± 1.2 vs. +7.7 ± 2.2%, HIV-positive vs. HIV-negative, mean ± SEM, respectively, P = 0.002) and blood flow response (0.2 ± 2.3 vs. 13.5 ± 4.8%, P = 0.005). The pulmonary artery vasodilatory effect of IHE in healthy individuals was fully blocked by nitric oxide-synthase, demonstrating this pulmonary artery response is predominantly nitric oxide mediated. CONCLUSION Using noninvasive MRI methods to quantify PAEF, we observed significantly impaired PAEF in PLWH compared with matched HIV-negative controls. Noninvasive PAEF testing may be useful in evaluating early HIV-related pulmonary vascular disease.
Collapse
|
3
|
Kato Y, Ambale-Venkatesh B, Kassai Y, Kasuboski L, Schuijf J, Kapoor K, Caruthers S, Lima JAC. Non-contrast coronary magnetic resonance angiography: current frontiers and future horizons. MAGMA (NEW YORK, N.Y.) 2020; 33:591-612. [PMID: 32242282 PMCID: PMC7502041 DOI: 10.1007/s10334-020-00834-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Revised: 01/22/2020] [Accepted: 01/29/2020] [Indexed: 02/07/2023]
Abstract
Coronary magnetic resonance angiography (coronary MRA) is advantageous in its ability to assess coronary artery morphology and function without ionizing radiation or contrast media. However, technical limitations including reduced spatial resolution, long acquisition times, and low signal-to-noise ratios prevent it from clinical routine utilization. Nonetheless, each of these limitations can be specifically addressed by a combination of novel technologies including super-resolution imaging, compressed sensing, and deep-learning reconstruction. In this paper, we first review the current clinical use and motivations for non-contrast coronary MRA, discuss currently available coronary MRA techniques, and highlight current technical developments that hold unique potential to optimize coronary MRA image acquisition and post-processing. In the final section, we examine the various research-based coronary MRA methods and metrics that can be leveraged to assess coronary stenosis severity, physiological function, and atherosclerotic plaque characterization. We specifically discuss how such technologies may contribute to the clinical translation of coronary MRA into a robust modality for routine clinical use.
Collapse
Affiliation(s)
- Yoko Kato
- Division of Cardiology, Johns Hopkins University School of Medicine, 600 N Wolfe St, Blalock 524, Baltimore, MD, 21287-0409, USA
| | | | | | | | | | - Karan Kapoor
- Division of Cardiology, Johns Hopkins University School of Medicine, 600 N Wolfe St, Blalock 524, Baltimore, MD, 21287-0409, USA
| | | | - Joao A C Lima
- Division of Cardiology, Johns Hopkins University School of Medicine, 600 N Wolfe St, Blalock 524, Baltimore, MD, 21287-0409, USA.
| |
Collapse
|
4
|
Zwingli G, Yerly J, Mivelaz Y, Stoppa-Vaucher S, Dwyer AA, Pitteloud N, Stuber M, Hauschild M. Non-invasive assessment of coronary endothelial function in children and adolescents with type 1 diabetes mellitus using isometric handgrip exercise-MRI: A feasibility study. PLoS One 2020; 15:e0228569. [PMID: 32053613 PMCID: PMC7018029 DOI: 10.1371/journal.pone.0228569] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Accepted: 01/19/2020] [Indexed: 01/02/2023] Open
Abstract
Background Type 1 diabetes mellitus (T1DM) in children and adolescents is associated with significant cardiovascular morbidity and mortality. Early detection of vascular dysfunction is key to patient management yet current assessment techniques are invasive and not suitable for pediatric patient populations. A novel approach using isometric handgrip exercise during magnetic resonance imaging (IHE-MRI) has recently been developed to evaluate coronary endothelial function non-invasively in adults. This project aimed to assess endothelium-dependent coronary arterial response to IHE-MRI in children with T1DM and in age matched healthy controls. Materials and methods Healthy volunteers and children with T1DM (>5 years) were recruited. IHE-MRI cross-sectional coronary artery area measurements were recorded at rest and under stress. Carotid intima media thickness (CIMT) and aortic pulse wave velocity (PWV) were assessed for comparison. Student’s t-tests were used to compare results between groups. Results and discussion Seven children with T1DM (3 female, median 14.8 years, mean 14.8 ± 1.9 years) and 16 healthy controls (7 female, median 14.8 years, mean 14.2 ± 2.4 years) participated. A significant increase in stress-induced cross-sectional coronary area was measured in controls (5.4 mm2 at rest to 6.39 mm2 under stress, 18.8 ± 10.7%, p = 0.0004). In contrast, mean area change in patients with T1DM was not significant (7.17 mm2 at rest to 7.59 mm2 under stress, 10.5% ± 28.1%, p = n.s.). There was no significant difference in the results for neither PWV nor CIMT between patients and controls, (5.3±1.5 m/s vs.4.8±0.7 m/s and 0.4±0.03mm vs.0.46 mm ± 0.03 respectively, both p = n.s.). Conclusions Our pilot study demonstrates the feasibility of using a totally non-invasive IHE-MRI technique in children and adolescents with and without T1DM. Preliminary results suggest a blunted endothelium-dependent coronary vasomotor function in children with T1DM (>5 years). Better knowledge and new methodologies may improve surveillance and care for T1DM patients to reduce cardiovascular morbidity and mortality.
Collapse
Affiliation(s)
- Gaëtan Zwingli
- Lausanne University (UNIL), Faculty of Biology and Medicine, Lausanne, Switzerland
| | - Jérôme Yerly
- Department of Radiology, Lausanne University Hospital (CHUV), Center for Biomedical Imaging, Lausanne, Switzerland
| | - Yvan Mivelaz
- Pediatric Cardiology Unit, Service of Pediatrics, Lausanne University Hospital (CHUV), Lausanne, Switzerland
| | - Sophie Stoppa-Vaucher
- Department of Pediatrics, Hôpital Neuchâtelois, Neuchâtel, Switzerland
- Pediatric Endocrinology, Diabetology and Obesity Unit, Service of Pediatrics, Lausanne University Hospital (CHUV), Lausanne, Switzerland
| | - Andrew A. Dwyer
- Boston College, William F.Connell School of Nursing, Chestnut Hill, MA, United States of America
| | - Nelly Pitteloud
- Pediatric Endocrinology, Diabetology and Obesity Unit, Service of Pediatrics, Lausanne University Hospital (CHUV), Lausanne, Switzerland
- Service of Endocrinology, Diabetology and Metabolism, Lausanne University Hospital (CHUV), Lausanne, Switzerland
| | - Matthias Stuber
- Department of Radiology, Lausanne University Hospital (CHUV), Center for Biomedical Imaging, Lausanne, Switzerland
| | - Michael Hauschild
- Pediatric Endocrinology, Diabetology and Obesity Unit, Service of Pediatrics, Lausanne University Hospital (CHUV), Lausanne, Switzerland
- * E-mail:
| |
Collapse
|
5
|
Ghanem AM, Hamimi AH, Gharib AM, Abd-Elmoniem KZ. Automatic Assessment of 3D Coronary Artery Distensibility from Time-Resolved Coronary CT Angiography .. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2020; 2019:836-840. [PMID: 31946025 DOI: 10.1109/embc.2019.8856732] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Measuring coronary artery distensibility can determine the arterial remodeling type, arterial wall inflammation, and atherosclerotic plaques in early stage even before any observed narrowing in the lumen. This is crucial to promote an appropriate, preventive, and effective treatment. This study introduces a framework for calculating the 3D distensibility of the left coronary artery (LCA) from time-resolved coronary computerized tomography angiography (CCTA) images. Vesselness, region growing, and level sets are utilized for segmenting the LCA lumen in the systole and diastole CCTA time frames. The segmented arteries are then analyzed and registered using computational geometry to calculate the changes in the lumen cross-section areas between both time frames. In-vivo validation of the framework performance was accomplished against that of two radiologists and their consensus. Results demonstrate that the framework was accurate and reliable tool for measuring the coronary arteries distensibility.
Collapse
|
6
|
Coppel R, Lagache M, Finet G, Rioufol G, Gómez A, Dérimay F, Malvé M, Yazdani SK, Pettigrew RI, Ohayon J. Influence of Collaterals on True FFR Prediction for a Left Main Stenosis with Concomitant Lesions: An In Vitro Study. Ann Biomed Eng 2019; 47:1409-1421. [DOI: 10.1007/s10439-019-02235-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Accepted: 02/20/2019] [Indexed: 12/20/2022]
|
7
|
Yerly J, Becce F, van Heeswijk RB, Verdun FR, Gubian D, Meuli R, Stuber M. In vitro optimization and comparison of CT angiography versus radial cardiovascular magnetic resonance for the quantification of cross-sectional areas and coronary endothelial function. J Cardiovasc Magn Reson 2019; 21:11. [PMID: 30728035 PMCID: PMC6366062 DOI: 10.1186/s12968-019-0521-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Accepted: 01/14/2019] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Our objectives were first to determine the optimal coronary computed tomography angiography (CTA) protocol for the quantification and detection of simulated coronary artery cross-sectional area (CSA) differences in vitro, and secondly to quantitatively compare the performance of the optimized CTA protocol with a previously validated radial coronary cardiovascular magnetic resonance (CMR) technique. METHODS 256-multidetector CTA and radial coronary CMR were used to obtain images of a custom in vitro resolution phantom simulating a range of physiological responses of coronary arteries to stress. CSAs were automatically quantified and compared with known nominal values to determine the accuracy, precision, signal-to-noise ratio (SNR), and circularity of CSA measurements, as well as the limit of detection (LOD) of CSA differences. Various iodine concentrations, radiation dose levels, tube potentials, and iterative image reconstruction algorithms (ASiR-V) were investigated to determine the optimal CTA protocol. The performance of the optimized CTA protocol was then compared with a radial coronary CMR method previously developed for endothelial function assessment under both static and moving conditions. RESULTS The iodine concentration, dose level, tube potential, and reconstruction algorithm all had significant effects (all p < 0.001) on the accuracy, precision, LOD, SNR, and circularity of CSA measurements with CTA. The best precision, LOD, SNR, and circularity with CTA were achieved with 6% iodine, 20 mGy, 100 kVp, and 90% ASiR-V. Compared with the optimized CTA protocol under static conditions, radial coronary CMR was less accurate (- 0.91 ± 0.13 mm2 vs. -0.35 ± 0.04 mm2, p < 0.001), but more precise (0.08 ± 0.02 mm2 vs. 0.21 ± 0.02 mm2, p < 0.001), and enabled the detection of significantly smaller CSA differences (0.16 ± 0.06 mm2 vs. 0.52 ± 0.04 mm2; p < 0.001; corresponding to CSA percentage differences of 2.3 ± 0.8% vs. 7.4 ± 0.6% for a 3-mm baseline diameter). The same results held true under moving conditions as CSA measurements with CMR were less affected by motion. CONCLUSIONS Radial coronary CMR was more precise and outperformed CTA for the specific task of detecting small CSA differences in vitro, and was able to reliably identify CSA changes an order of magnitude smaller than those reported for healthy physiological vasomotor responses of proximal coronary arteries. However, CTA yielded more accurate CSA measurements, which may prove useful in other clinical scenarios, such as coronary artery stenosis assessment.
Collapse
Affiliation(s)
- Jérôme Yerly
- Department of Diagnostic and Interventional Radiology, Lausanne University Hospital (CHUV and UNIL), Rue du Bugnon 46, Lausanne, 1011 VD Switzerland
- Center for Biomedical Imaging (CIBM), Lausanne, Switzerland
| | - Fabio Becce
- Department of Diagnostic and Interventional Radiology, Lausanne University Hospital (CHUV and UNIL), Rue du Bugnon 46, Lausanne, 1011 VD Switzerland
| | - Ruud B. van Heeswijk
- Department of Diagnostic and Interventional Radiology, Lausanne University Hospital (CHUV and UNIL), Rue du Bugnon 46, Lausanne, 1011 VD Switzerland
- Center for Biomedical Imaging (CIBM), Lausanne, Switzerland
| | - Francis R. Verdun
- Institute of Radiation Physics, Lausanne University Hospital (CHUV and UNIL), Lausanne, Switzerland
| | - Danilo Gubian
- Direction des Constructions, Ingénierie, Technique et Sécurité (CIT-S), Lausanne University Hospital (CHUV and UNIL), Lausanne, Switzerland
| | - Reto Meuli
- Department of Diagnostic and Interventional Radiology, Lausanne University Hospital (CHUV and UNIL), Rue du Bugnon 46, Lausanne, 1011 VD Switzerland
| | - Matthias Stuber
- Department of Diagnostic and Interventional Radiology, Lausanne University Hospital (CHUV and UNIL), Rue du Bugnon 46, Lausanne, 1011 VD Switzerland
- Center for Biomedical Imaging (CIBM), Lausanne, Switzerland
| |
Collapse
|
8
|
M'hiri F, Duong L, Desrosiers C, Dahdah N, Miró J, Cheriet M. Automatic evaluation of vessel diameter variation from 2D X-ray angiography. Int J Comput Assist Radiol Surg 2017. [PMID: 28707212 DOI: 10.1007/s11548-017-1639-9/figures/9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/08/2023]
Abstract
PURPOSE Early detection of blood vessel pathologies can be made through the evaluation of functional and structural abnormalities in the arteries, including the arterial distensibility measure. We propose a feasibility study on computing arterial distensibility automatically from monoplane 2D X-ray sequences for both small arteries (such as coronary arteries) and larger arteries (such as the aorta). METHODS To compute the distensibility measure, three steps were developed: First, the segment of an artery is extracted using our graph-based segmentation method. Then, the same segment is tracked in the moving sequence using our spatio-temporal segmentation method: the Temporal Vessel Walker. Finally, the diameter of the artery is measured automatically at each frame of the sequence based on the segmentation results. RESULTS The method was evaluated using one simulated sequence and 4 patients' angiograms depicting the coronary arteries and three depicting the ascending aorta. Results of the simulated sequence achieved a Dice index of 98%, with a mean squared error in diameter measurement of [Formula: see text] mm. Results obtained from patients' X-ray sequences are consistent with manual assessment of the diameter by experts. CONCLUSIONS The proposed method measures changes in diameter of a specific segment of a blood vessel during the cardiac sequence, automatically based on monoplane 2D X-ray sequence. Such information might become a key to help physicians in the detection of variations of arterial stiffness associated with early stages of various vasculopathies.
Collapse
Affiliation(s)
- Faten M'hiri
- Department of Software and IT Engineering, École de technologie supérieure, Montreal, Canada.
| | - Luc Duong
- Department of Software and IT Engineering, École de technologie supérieure, Montreal, Canada
| | - Christian Desrosiers
- Department of Software and IT Engineering, École de technologie supérieure, Montreal, Canada
| | - Nagib Dahdah
- Department of Cardiology, Sainte-Justine Hospital, Montreal, Canada
| | - Joaquim Miró
- Department of Cardiology, Sainte-Justine Hospital, Montreal, Canada
| | - Mohamed Cheriet
- Automated Production Engineering, École de technologie supérieure, Montreal, Canada
| |
Collapse
|
9
|
The relationship between coronary artery distensibility and fractional flow reserve. PLoS One 2017; 12:e0181824. [PMID: 28742827 PMCID: PMC5526528 DOI: 10.1371/journal.pone.0181824] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Accepted: 07/09/2017] [Indexed: 11/27/2022] Open
Abstract
Discordance between angiography-based anatomical assessment of coronary stenosis severity and fractional flow reserve (FFR) has been attributed to several factors including lesion length and irregularity, and the myocardial territory supplied by the target vessel. We sought to examine if coronary arterial distensibility is an independent contributor to this discordance. There were two parts to this study. The first consisted of “in silico” models of 26 human coronary arteries. Computational fluid dynamics-derived FFR was calculated for fully rigid, partially distensible and fully distensible models of the 26 arteries. The second part of the study consisted of 104 patients who underwent coronary angiography and FFR measurement. Distensibility at the lesion site (DistensibilityMLA) and for the reference vessel (DistensibilityRef) was determined by analysing three-dimensional angiography images during end-systole and end-diastole. Computational fluid dynamics-derived FFR was 0.67±0.19, 0.70±0.18 and 0.75±0.17 (P<0.001) in the fully rigid, partially distensible and fully distensible models respectively. FFR correlated with both DistensibilityMLA (r = 0.36, P<0.001) and DistensibilityRef (r = 0.44, P<0.001). Two-way ANCOVA analysis revealed that DistensibilityMLA (F (1, 100) = 4.17, p = 0.031) and percentage diameter stenosis (F (1, 100) = 60.30, p < 0.01) were both independent predictors of FFR. Coronary arterial distensibility is a novel, independent determinant of FFR, and an important factor contributing to the discordance between anatomical and functional assessment of stenosis severity.
Collapse
|
10
|
Automatic evaluation of vessel diameter variation from 2D X-ray angiography. Int J Comput Assist Radiol Surg 2017; 12:1867-1876. [DOI: 10.1007/s11548-017-1639-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Accepted: 06/29/2017] [Indexed: 10/19/2022]
|
11
|
Pagiatakis C, Tardif JC, L'Allier PL, Mongrain R. Effect of stenosis eccentricity on the functionality of coronary bifurcation lesions-a numerical study. Med Biol Eng Comput 2017; 55:2079-2095. [PMID: 28500478 DOI: 10.1007/s11517-017-1653-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2016] [Accepted: 04/25/2017] [Indexed: 01/10/2023]
Abstract
Interventional cardiologists still rely heavily on angiography for the evaluation of coronary lesion severity, despite its poor correlation with the presence of ischemia. In order to improve the accuracy of the current diagnostic procedures, an understanding of the relative influence of geometric characteristics on the induction of ischemia is required. This idea is especially important for coronary bifurcation lesions (CBLs), whose treatment is complex and is associated with high rates of peri- and post-procedural clinical events. Overall, it is unclear which geometric and morphological parameters of CBLs influence the onset of ischemia. More specifically, the effect of stenosis eccentricity is unknown. Computational fluid dynamic simulations, under a geometric multiscale framework, were executed for seven CBL configurations within the left main coronary artery bifurcation. Both concentric and eccentric stenosis profiles of mild to severe constriction were considered. By using a geometric multiscale framework, the fractional flow reserve, which is the gold-standard clinical diagnostic index, could be calculated and was compared between the eccentric and concentric profiles for each case. The results suggested that for configurations where the supplying vessel is stenosed, eccentricity could have a notable effect on and therefore be an important factor that influences configuration functionality.
Collapse
Affiliation(s)
- Catherine Pagiatakis
- Department of Mechanical Engineering, McGill University, 817 Sherbrooke Street West, Montreal, Quebec, H3A 0C3, Canada. .,Montreal Heart Institute, 5000 Belanger Street, Montreal, Quebec, H1T 1C8, Canada.
| | - Jean-Claude Tardif
- Montreal Heart Institute, 5000 Belanger Street, Montreal, Quebec, H1T 1C8, Canada.,Faculty of Medicine, Université de Montréal - Pavillon Roger-Gaudry, 2900 Edouard-Montpetit Boulevard, Montreal, Quebec, H3T 1J4, Canada
| | - Philippe L L'Allier
- Montreal Heart Institute, 5000 Belanger Street, Montreal, Quebec, H1T 1C8, Canada.,Faculty of Medicine, Université de Montréal - Pavillon Roger-Gaudry, 2900 Edouard-Montpetit Boulevard, Montreal, Quebec, H3T 1J4, Canada
| | - Rosaire Mongrain
- Department of Mechanical Engineering, McGill University, 817 Sherbrooke Street West, Montreal, Quebec, H3A 0C3, Canada.,Montreal Heart Institute, 5000 Belanger Street, Montreal, Quebec, H1T 1C8, Canada
| |
Collapse
|
12
|
Yerly J, Gubian D, Knebel JF, Schenk A, Chaptinel J, Ginami G, Stuber M. A phantom study to determine the theoretical accuracy and precision of radial MRI to measure cross-sectional area differences for the application of coronary endothelial function assessment. Magn Reson Med 2017; 79:108-120. [DOI: 10.1002/mrm.26646] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Revised: 01/23/2017] [Accepted: 01/24/2017] [Indexed: 11/05/2022]
Affiliation(s)
- Jérôme Yerly
- Department of Radiology; University Hospital (CHUV) and University of Lausanne (UNIL); Lausanne Switzerland
- Center for Biomedical Imaging (CIBM); Lausanne Switzerland
| | - Danilo Gubian
- Direction des Constructions; Ingénierie, Technique et Sécurité (CIT-S), University Hospital (CHUV) and University of Lausanne (UNIL); Lausanne Switzerland
| | - Jean-Francois Knebel
- Center for Biomedical Imaging (CIBM); Lausanne Switzerland
- Laboratory for Investigative Neurophysiology (The LINE); Departments of Radiology and Clinical Neurosciences, University Hospital (CHUV) and University of Lausanne (UNIL); Lausanne Switzerland
| | - Ali Schenk
- Quality Management, Liebherr Machines Bulle SA; Bulle Switzerland
| | - Jerome Chaptinel
- Department of Radiology; University Hospital (CHUV) and University of Lausanne (UNIL); Lausanne Switzerland
| | - Giulia Ginami
- Department of Radiology; University Hospital (CHUV) and University of Lausanne (UNIL); Lausanne Switzerland
| | - Matthias Stuber
- Department of Radiology; University Hospital (CHUV) and University of Lausanne (UNIL); Lausanne Switzerland
- Center for Biomedical Imaging (CIBM); Lausanne Switzerland
| |
Collapse
|
13
|
Pang J, Chen Y, Fan Z, Nguyen C, Yang Q, Xie Y, Li D. High efficiency coronary MR angiography with nonrigid cardiac motion correction. Magn Reson Med 2016; 76:1345-1353. [PMID: 27455164 DOI: 10.1002/mrm.26332] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2016] [Revised: 06/09/2016] [Accepted: 06/15/2016] [Indexed: 11/05/2022]
Abstract
PURPOSE To improve the coronary visualization quality of four-dimensional (4D) coronary MR angiography (MRA) through cardiac motion correction and iterative reconstruction. METHODS A contrast-enhanced, spoiled gradient echo sequence with 3D radial trajectory and self-gating was used for 4D coronary MRA data acquisition at 3 Tesla. A whole-heart 16-phase cine series was reconstructed with respiratory motion correction. Nonrigid registration was performed between the identified quiescent phases and a reference. The motion information of all included phases was then used along with the corresponding k-space data to iteratively reconstruct the final image. Healthy volunteer studies (N = 13) were conducted to compare the proposed method with the conventional strategy, which accepts data from a single, contiguous window out of the original 16-phase data. Apparent signal-to-noise ratio (aSNR) and coronary sharpness were used as the image quality metrics. RESULTS The proposed method significantly improved aSNR (11.89 ± 3.76 to 13.97 ± 5.21; P = 0.005) and scan efficiency (18.8% ± 6.0% to 40.9% ± 9.7%; P < 0.001), compared with the conventional strategy. Sharpness of left main (P = 0.002), proximal (P = 0.04), and middle (P = 0.02) right coronary artery, and proximal left anterior descending (P = 0.04) was also significantly improved. CONCLUSION The proposed cardiac motion-corrected reconstruction significantly improved the achievable quality of coronary visualization from 4D coronary MRA. Magn Reson Med 76:1345-1353, 2016. © 2016 International Society for Magnetic Resonance in Medicine.
Collapse
Affiliation(s)
- Jianing Pang
- Biomedical Imaging Research Institute, Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Yuhua Chen
- Biomedical Imaging Research Institute, Cedars-Sinai Medical Center, Los Angeles, California, USA.,Computer and Information Science, University of Pennsylvania, Philadelphia, Pennyslvania, USA
| | - Zhaoyang Fan
- Biomedical Imaging Research Institute, Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Christopher Nguyen
- Biomedical Imaging Research Institute, Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Qi Yang
- Biomedical Imaging Research Institute, Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Yibin Xie
- Biomedical Imaging Research Institute, Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Debiao Li
- Biomedical Imaging Research Institute, Cedars-Sinai Medical Center, Los Angeles, California, USA. .,Bioengineering, University of California, Los Angeles, California, USA.
| |
Collapse
|
14
|
Yerly J, Ginami G, Nordio G, Coristine AJ, Coppo S, Monney P, Stuber M. Coronary endothelial function assessment using self-gated cardiac cine MRI andk-tsparse SENSE. Magn Reson Med 2015; 76:1443-1454. [DOI: 10.1002/mrm.26050] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2015] [Revised: 09/30/2015] [Accepted: 10/23/2015] [Indexed: 11/11/2022]
Affiliation(s)
- Jérôme Yerly
- Department of Radiology; University Hospital and University of Lausanne; Lausanne Switzerland
- Center for Biomedical Imaging; Lausanne Switzerland
| | - Giulia Ginami
- Department of Radiology; University Hospital and University of Lausanne; Lausanne Switzerland
- Center for Biomedical Imaging; Lausanne Switzerland
| | - Giovanna Nordio
- Department of Radiology; University Hospital and University of Lausanne; Lausanne Switzerland
- Center for Biomedical Imaging; Lausanne Switzerland
| | - Andrew J. Coristine
- Department of Radiology; University Hospital and University of Lausanne; Lausanne Switzerland
- Center for Biomedical Imaging; Lausanne Switzerland
| | - Simone Coppo
- Department of Radiology; University Hospital and University of Lausanne; Lausanne Switzerland
- Center for Biomedical Imaging; Lausanne Switzerland
| | - Pierre Monney
- Cardiac MR Center, Service of Cardiology; University Hospital of Lausanne; Lausanne Switzerland
| | - Matthias Stuber
- Department of Radiology; University Hospital and University of Lausanne; Lausanne Switzerland
- Center for Biomedical Imaging; Lausanne Switzerland
| |
Collapse
|
15
|
Pagiatakis C, Tardif JC, L’Allier PL, Mongrain R. A numerical investigation of the functionality of coronary bifurcation lesions with respect to lesion configuration and stenosis severity. J Biomech 2015; 48:3103-11. [DOI: 10.1016/j.jbiomech.2015.07.018] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2015] [Revised: 07/15/2015] [Accepted: 07/18/2015] [Indexed: 10/23/2022]
|
16
|
Pagiatakis C, Galaz R, Tardif JC, Mongrain R. A comparison between the principal stress direction and collagen fiber orientation in coronary atherosclerotic plaque fibrous caps. Med Biol Eng Comput 2015; 53:545-55. [DOI: 10.1007/s11517-015-1257-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2014] [Accepted: 02/18/2015] [Indexed: 01/18/2023]
|
17
|
Frattolin J, Zarandi MM, Pagiatakis C, Bertrand OF, Mongrain R. Numerical study of stenotic side branch hemodynamics in true bifurcation lesions. Comput Biol Med 2015; 57:130-8. [DOI: 10.1016/j.compbiomed.2014.11.014] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2014] [Revised: 11/19/2014] [Accepted: 11/28/2014] [Indexed: 11/15/2022]
|
18
|
Chiastra C, Migliavacca F, Martínez MÁ, Malvè M. On the necessity of modelling fluid–structure interaction for stented coronary arteries. J Mech Behav Biomed Mater 2014; 34:217-30. [DOI: 10.1016/j.jmbbm.2014.02.009] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2013] [Revised: 01/23/2014] [Accepted: 02/05/2014] [Indexed: 01/17/2023]
|
19
|
Doltra A, Schneeweis C, Fleck E, Kelle S. Cardiac magnetic resonance for prognostic assessment: present applications and future directions. Expert Rev Cardiovasc Ther 2014; 12:771-82. [PMID: 24754461 DOI: 10.1586/14779072.2014.910117] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Cardiac magnetic resonance is increasingly used in clinical practice for both diagnostic and prognostic purposes. In the field of ischemic heart disease, perfusion imaging permits the assessment of ischemia, which is strongly related to future cardiac events and mortality. Late gadolinium enhancement is also associated with the prognosis and can be used as a marker of functional recovery. Cardiac magnetic resonance also permits the detection of microvascular obstruction and infarct hemorrhage, both related to an adverse outcome. In non-ischemic heart disease, the presence of late gadolinium enhancement is linked to mortality and hard events. Finally, coronary angiography, as well as new techniques, such as T1 mapping, may also have a prognostic role.
Collapse
Affiliation(s)
- Adelina Doltra
- Department of Internal Medicine/Cardiology, Deutsches Herzzentrum Berlin, Augustenburger Platz 1,13353 Berlin, Germany
| | | | | | | |
Collapse
|
20
|
Makowski MR, Henningsson M, Spuentrup E, Kim WY, Maintz D, Manning WJ, Botnar RM. Characterization of coronary atherosclerosis by magnetic resonance imaging. Circulation 2013; 128:1244-55. [PMID: 24019445 DOI: 10.1161/circulationaha.113.002681] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Marcus R Makowski
- Division of Imaging Sciences and Biomedical Engineering (M.R.M., M.H., R.M.B.), BHF Center of Research Excellence (M.R.M., M.H., R.M.B.), Wellcome Trust and EPSRC Medical Engineering Center (M.H., R.M.B.), and NIHR Biomedical Research Center (M.H., R.M.B.), King's College London, London, UK; Department of Radiology, Charité, Berlin, Germany (M.R.M.); Department of Radiology and Nuclear Medicine, Hospital Saarbrucken, Saarbrucken, Germany (E.S.); Department of Cardiology, Aarhus University Hospital, Skejby Sygehus, Denmark (W.Y.K.); Department of Radiology, University of Cologne, Cologne, Germany (D.M.); and Department of Medicine, Cardiovascular Division, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA (W.J.M.)
| | | | | | | | | | | | | |
Collapse
|
21
|
Gotschy A, Bauer E, Schrodt C, Lykowsky G, Ye YX, Rommel E, Jakob PM, Bauer WR, Herold V. Local arterial stiffening assessed by MRI precedes atherosclerotic plaque formation. Circ Cardiovasc Imaging 2013; 6:916-23. [PMID: 24100044 DOI: 10.1161/circimaging.113.000611] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
BACKGROUND Atherosclerosis is known to impair vascular function and cause vascular stiffening. The aim of this study was to evaluate the potential predictive role of vascular stiffening in the early detection of atherosclerosis. Therefore, we investigated the time course of early functional and morphological alterations of the vessel wall in a murine atherosclerosis model. Because initial lesions are distributed inhomogeneously in early-stage atherosclerosis, MR microscopy was performed to measure vascular elasticity locally, specifically the local pulse wave velocity and the arterial wall thickness. METHODS AND RESULTS Local pulse wave velocity and the mean arterial wall thickness were determined in the ascending and the abdominal aortae of ApoE(-/-) and wild-type mice. In vivo MRI revealed that baseline pulse wave velocity and morphology were similar in 6-week-old ApoE(-/-) and WT mice, whereas at the age of 18 weeks, local pulse wave velocity was significantly elevated in ApoE(-/-) mice. Significantly increased vessel wall thickness was not found in ApoE(-/-) mice until the age of 30 weeks. Histological analysis of the aortae of ApoE(-/-) and WT mice showed that increased pulse wave velocity coincided with the fragmentation of the elastic laminae in the arterial wall, which is hypothesized to induce early vascular stiffening and may be promoted by macrophage-mediated matrix degradation. CONCLUSIONS We newly report that the assessment of local pulse wave velocity via MRI provides early information about the local progression of atherosclerosis before macroscopic alterations of the vessel wall occur.
Collapse
Affiliation(s)
- Alexander Gotschy
- Department of Internal Medicine I, University Hospital Würzburg, Würzburg, Germany
| | | | | | | | | | | | | | | | | |
Collapse
|
22
|
Hays AG, Stuber M, Hirsch GA, Yu J, Schär M, Weiss RG, Gerstenblith G, Kelle S. Non-invasive detection of coronary endothelial response to sequential handgrip exercise in coronary artery disease patients and healthy adults. PLoS One 2013; 8:e58047. [PMID: 23536782 PMCID: PMC3594224 DOI: 10.1371/journal.pone.0058047] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2012] [Accepted: 01/30/2013] [Indexed: 11/18/2022] Open
Abstract
OBJECTIVES Our objective is to test the hypothesis that coronary endothelial function (CorEndoFx) does not change with repeated isometric handgrip (IHG) stress in CAD patients or healthy subjects. BACKGROUND Coronary responses to endothelial-dependent stressors are important measures of vascular risk that can change in response to environmental stimuli or pharmacologic interventions. The evaluation of the effect of an acute intervention on endothelial response is only valid if the measurement does not change significantly in the short term under normal conditions. Using 3.0 Tesla (T) MRI, we non-invasively compared two coronary artery endothelial function measurements separated by a ten minute interval in healthy subjects and patients with coronary artery disease (CAD). METHODS Twenty healthy adult subjects and 12 CAD patients were studied on a commercial 3.0 T whole-body MR imaging system. Coronary cross-sectional area (CSA), peak diastolic coronary flow velocity (PDFV) and blood-flow were quantified before and during continuous IHG stress, an endothelial-dependent stressor. The IHG exercise with imaging was repeated after a 10 minute recovery period. RESULTS In healthy adults, coronary artery CSA changes and blood-flow increases did not differ between the first and second stresses (mean % change ±SEM, first vs. second stress CSA: 14.8%±3.3% vs. 17.8%±3.6%, p = 0.24; PDFV: 27.5%±4.9% vs. 24.2%±4.5%, p = 0.54; blood-flow: 44.3%±8.3 vs. 44.8%±8.1, p = 0.84). The coronary vasoreactive responses in the CAD patients also did not differ between the first and second stresses (mean % change ±SEM, first stress vs. second stress: CSA: -6.4%±2.0% vs. -5.0%±2.4%, p = 0.22; PDFV: -4.0%±4.6% vs. -4.2%±5.3%, p = 0.83; blood-flow: -9.7%±5.1% vs. -8.7%±6.3%, p = 0.38). CONCLUSION MRI measures of CorEndoFx are unchanged during repeated isometric handgrip exercise tests in CAD patients and healthy adults. These findings demonstrate the repeatability of noninvasive 3T MRI assessment of CorEndoFx and support its use in future studies designed to determine the effects of acute interventions on coronary vasoreactivity.
Collapse
Affiliation(s)
- Allison G. Hays
- Department of Medicine, Division of Cardiology, Johns Hopkins University, Baltimore, Maryland, United States of America
| | - Matthias Stuber
- Department of Medicine, Division of Cardiology, Johns Hopkins University, Baltimore, Maryland, United States of America
- Department of Radiology, Division of Magnetic Resonance Research, Johns Hopkins University, Baltimore, Maryland, United States of America
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, Maryland, United States of America
- Department of Radiology, Centre Hospitalier Universitaire Vaudois, Center for Biomedical Imaging (CIBM) and University of Lausanne, Lausanne, Switzerland
| | - Glenn A. Hirsch
- Department of Medicine, Division of Cardiology, Johns Hopkins University, Baltimore, Maryland, United States of America
- Department of Medicine, Division of Cardiology, University of Louisville, Louisville, Kentucky, United States of America
| | - Jing Yu
- Department of Radiology, Division of Magnetic Resonance Research, Johns Hopkins University, Baltimore, Maryland, United States of America
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, Maryland, United States of America
| | - Michael Schär
- Department of Radiology, Division of Magnetic Resonance Research, Johns Hopkins University, Baltimore, Maryland, United States of America
- Philips Healthcare, Cleveland, Ohio, United States of America
| | - Robert G. Weiss
- Department of Medicine, Division of Cardiology, Johns Hopkins University, Baltimore, Maryland, United States of America
- Department of Radiology, Division of Magnetic Resonance Research, Johns Hopkins University, Baltimore, Maryland, United States of America
| | - Gary Gerstenblith
- Department of Medicine, Division of Cardiology, Johns Hopkins University, Baltimore, Maryland, United States of America
- Department of Radiology, Division of Magnetic Resonance Research, Johns Hopkins University, Baltimore, Maryland, United States of America
| | - Sebastian Kelle
- Department of Radiology, Division of Magnetic Resonance Research, Johns Hopkins University, Baltimore, Maryland, United States of America
- Department of Medicine, Division of Cardiology, Deutsches Herzzentrum Berlin, Berlin, Germany
- * E-mail:
| |
Collapse
|
23
|
Winkel DJ, Xiong T, Tiling N, Stuber M, Hays A, Weiss RG, Gebker R, Fleck E, Plöckinger U, Kelle S. Coronary artery distensibility assessed by cardiovascular magnetic resonance imaging in patients with type 2 diabetes mellitus and healthy controls. J Cardiovasc Magn Reson 2013. [PMCID: PMC3559414 DOI: 10.1186/1532-429x-15-s1-m5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
|
24
|
Hays AG, Kelle S, Hirsch GA, Soleimanifard S, Yu J, Agarwal HK, Gerstenblith G, Schär M, Stuber M, Weiss RG. Regional coronary endothelial function is closely related to local early coronary atherosclerosis in patients with mild coronary artery disease: pilot study. Circ Cardiovasc Imaging 2012; 5:341-8. [PMID: 22492483 DOI: 10.1161/circimaging.111.969691] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Coronary endothelial function is abnormal in patients with established coronary artery disease and was recently shown by MRI to relate to the severity of luminal stenosis. Recent advances in MRI now allow the noninvasive assessment of both anatomic and functional (endothelial function) changes that previously required invasive studies. We tested the hypothesis that abnormal coronary endothelial function is related to measures of early atherosclerosis such as increased coronary wall thickness. METHODS AND RESULTS Seventeen arteries in 14 healthy adults and 17 arteries in 14 patients with nonobstructive coronary artery disease were studied. To measure endothelial function, coronary MRI was performed before and during isometric handgrip exercise, an endothelial-dependent stressor, and changes in coronary cross-sectional area and flow were measured. Black blood imaging was performed to quantify coronary wall thickness and indices of arterial remodeling. The mean stress-induced change in cross-sectional area was significantly higher in healthy adults (13.5%±12.8%, mean±SD, n=17) than in those with mildly diseased arteries (-2.2%±6.8%, P<0.0001, n=17). Mean coronary wall thickness was lower in healthy subjects (0.9±0.2 mm) than in patients with coronary artery disease (1.4±0.3 mm, P<0.0001). In contrast to healthy subjects, stress-induced changes in cross-sectional area, a measure of coronary endothelial function, correlated inversely with coronary wall thickness in patients with coronary artery disease (r=-0.73, P=0.0008). CONCLUSIONS There is an inverse relationship between coronary endothelial function and local coronary wall thickness in patients with coronary artery disease but not in healthy adults. These findings demonstrate that local endothelial-dependent functional changes are related to the extent of early anatomic atherosclerosis in mildly diseased arteries. This combined MRI approach enables the anatomic and functional investigation of early coronary disease.
Collapse
Affiliation(s)
- Allison G Hays
- Department of Medicine, Johns Hopkins University, Baltimore, MD 21287, USA
| | | | | | | | | | | | | | | | | | | |
Collapse
|
25
|
Khan AM, Litt H, Ferrari V, Han Y. Cardiac Magnetic Resonance Imaging in Ischemic Heart Disease. PET Clin 2011; 6:453-73. [DOI: 10.1016/j.cpet.2011.10.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|