1
|
Zhu C, Wang S, Wang S, Meng Y, Yang Q, Nie C, Sun H. Prevalence and characteristics of intramural coronary artery in hypertrophic obstructive cardiomyopathy: a coronary computed tomography and invasive angiography study. Quant Imaging Med Surg 2021; 11:162-171. [PMID: 33392019 DOI: 10.21037/qims-20-362] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Background The prevalence and morphologic characteristics of intramural coronary artery (ICA) in patients with hypertrophic obstructive cardiomyopathy (HOCM) have yet to be fully illuminated. Our study aimed to investigate the prevalence and morphologic characteristics of ICA in patients with HOCM using coronary computed tomography (CT) angiography and invasive coronary angiography. Methods Patients with a diagnosis of HOCM who were admitted for selective myectomy in Fuwai Hospital were prospectively enrolled between September 2015 and June 2019. Both preoperative coronary CT and invasive angiography were scheduled for all participants. Results Coronary CT angiography detected ICA in 106 (23.3%) out of 455 patients. Dynamic compression of coronary arteries was observed in 87 patients (19.1%) by invasive coronary angiography. We found ICA covered with complete myocardial encasement in 98 patients (92.5%), with deep myocardial bridging (MB) observed most frequently (P=0.005). All patients with dynamic compression of coronary arteries had ICA. Dynamic luminal reduction ≥50% was present in 77 (16.9%) of the study participants. Pearson's correlation analysis revealed that the length and degree of dynamic compression were significantly related with MB length and depth (Pearson's correlation r=0.241, 0.581, 0.316, and 0.209; P=0.014, <0.001, 0.002, and 0.032, respectively). Conclusions Patients with HOCM commonly present with ICA and it can be visualized well by coronary CT angiography. Deep or extensive MB is more likely to produce coronary artery dynamic compression. Preoperative identification of this congenital coronary artery variant may be helpful for surgical planning.
Collapse
Affiliation(s)
- Changsheng Zhu
- Department of Cardiovascular Surgery, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Shuiyun Wang
- Department of Cardiovascular Surgery, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Shengwei Wang
- Department of Cardiovascular Surgery, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yanhai Meng
- Department of Cardiovascular Surgery, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Qiulan Yang
- Department of Cardiovascular Surgery, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Changrong Nie
- Department of Cardiovascular Surgery, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Hongtao Sun
- Department of Cardiovascular Surgery, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| |
Collapse
|
2
|
Gitsioudis G, Nunninger M, Missiou A, Wolf P, Katus HA, Korosoglou G. Multimodality cardiac computed tomography angiography and magnetic resonance with clinical-grade scanners provide robust assessment of cardiac morphology and function in rabbits. J Thorac Dis 2019; 11:4762-4771. [PMID: 31903266 DOI: 10.21037/jtd.2019.10.46] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Background Non-invasive computer tomography (CT)- and magnetic resonance (MR)-based cardiac imaging still remains challenging in rodents. To investigate the robustness of non-invasive multimodality cardiac imaging in rabbits using clinical-grade CT and MR scanners. Methods A total of 16 rabbits (2.7-4.0 kg) serially underwent cardiac-gated imaging using a clinical-grade 256-row CT and a 1.5 Tesla MR-scanner at baseline and at 4-month follow-up (16±1 weeks). Image analysis included image quality (5-grade scale), left ventricular (LV) volumes, LV stroke volume, LV diameters, LV wall thickness and ejection fraction (LVEF). Results Cardiac MR (CMR) and CT angiography (CTA) provide images with an overall good image quality (excellent or good quality: CMR 82% vs. CTA 78%, P=0.68). Linear regression analysis demonstrated a good correlation of all diameters (diam.) and volumes (vol.) as assessed by CTA and CMR (diam.: r=0.9, 95% CI: 0.8-0.9; vol.: r=0.8, 95% CI: 0.6-0.9; P<0.0001 for both). CTA-based volumetric analysis revealed slightly higher LVEF values as compared to CMR (CTA: 64%±1%, CMR: 59%±1%, P=0.002). Analysis of inter-/intra-observer agreement demonstrated excellent agreements for diameters (CMR: 98.5%/98.7%; CTA: 98.2%/97.4%) and volumes (CMR: 99.9%/98.8%; CTA 98.7%/98.7%). Finally, serial CMR- and CTA-based assessment of cardiac diameters and volumes delivered excellent intersession agreements of baseline versus follow-up data (diam.: CMR: r=0.89; CTA: r=0.92; vol.: CMR: r=0.87; CTA: r=0.96, P<0.0001 for all). Conclusions Multimodality non-invasive assessment of cardiac function and aortic hemodynamics is feasible and robust in rabbits using clinical-grade and MR and CT scanners. These imaging modalities could improve serial cardiac assessment for disease monitoring in preclinical settings.
Collapse
Affiliation(s)
- Gitsios Gitsioudis
- Department of Cardiology, University of Heidelberg, Heidelberg, Germany.,Department of Cardiology, University of Heidelberg, Heidelberg, Germany DZHK (German Centre for Cardiovascular Research), Partner Site Heidelberg, Heidelberg, Germany.,Department of Internal Medicine, Cardiology, Hospital of Bietigheim-Vaihingen, Academic Hospital of the University of Heidelberg, Bietigheim, Germany
| | - Maximilian Nunninger
- Department of Cardiology, University of Heidelberg, Heidelberg, Germany.,Department of Cardiology, University of Heidelberg, Heidelberg, Germany DZHK (German Centre for Cardiovascular Research), Partner Site Heidelberg, Heidelberg, Germany
| | - Anna Missiou
- Department of Cardiology, University of Heidelberg, Heidelberg, Germany.,Department of Cardiology, University of Heidelberg, Heidelberg, Germany DZHK (German Centre for Cardiovascular Research), Partner Site Heidelberg, Heidelberg, Germany.,Department of Cardiology, Clinic of Ludwigsburg, Academic Hospital of the University of Heidelberg, Ludwigsburg, Germany
| | - Peter Wolf
- Department of Cardiology, University of Heidelberg, Heidelberg, Germany.,Department of Cardiology, University of Heidelberg, Heidelberg, Germany DZHK (German Centre for Cardiovascular Research), Partner Site Heidelberg, Heidelberg, Germany
| | - Hugo A Katus
- Department of Cardiology, University of Heidelberg, Heidelberg, Germany.,Department of Cardiology, University of Heidelberg, Heidelberg, Germany DZHK (German Centre for Cardiovascular Research), Partner Site Heidelberg, Heidelberg, Germany
| | - Grigorios Korosoglou
- Department of Cardiology, University of Heidelberg, Heidelberg, Germany.,Department of Cardiology, University of Heidelberg, Heidelberg, Germany DZHK (German Centre for Cardiovascular Research), Partner Site Heidelberg, Heidelberg, Germany
| |
Collapse
|
3
|
Combined prospectively electrocardiography- and respiratory-triggered sequential cardiac computed tomography in free-breathing children: success rate and image quality. Pediatr Radiol 2018; 48:923-931. [PMID: 29589058 DOI: 10.1007/s00247-018-4114-z] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Revised: 02/06/2018] [Accepted: 03/11/2018] [Indexed: 10/17/2022]
Abstract
BACKGROUND Combined prospectively electrocardiography (ECG)- and respiratory-triggered sequential cardiac computed tomography (CT) has not been evaluated in free-breathing children. OBJECTIVE To evaluate the success rate and image quality of combined prospectively ECG- and respiratory-triggered sequential cardiac CT in free-breathing children. MATERIALS AND METHODS Image quality of combined prospectively ECG- and respiratory-triggered sequential cardiac CT in 870 children (≤5 years of age) was evaluated in terms of severe motion (maximal distance ≥2 mm) and band artifacts (maximal attenuation difference ≥100 Hounsfield units). The success rate of the scan mode was calculated. The causes of failed cases were assessed. Patient-related, radiation and image quality parameters were compared between success and failure groups. RESULTS Severe motion artifacts were observed in 10.6% (92/870) of patients due to cardiac phase error in 17 (18.5%), patient motion in 12 (13.0%), and unknown causes in 63 (68.5%). Severe band artifacts were seen in 13.2% (115/870) of patients. Combined prospectively ECG- and respiratory-triggered sequential cardiac CT was successfully performed in 78.5% (683/870) of patients, while it failed in 21.5% (187/870). All the evaluated patient-related, radiation and image quality parameters were significantly different (P≤0.001) between success and failure groups except effective dose (P>0.05). CONCLUSION Additional prospective respiratory triggering can reduce motion artifacts in prospectively ECG-triggered sequential cardiac CT in free-breathing children.
Collapse
|
4
|
Ramsey BC, Fentanes E, Choi AD, Branch KR, Thomas DM. Myocardial Assessment with Cardiac CT: Ischemic Heart Disease and Beyond. CURRENT CARDIOVASCULAR IMAGING REPORTS 2018; 11:16. [PMID: 29963220 PMCID: PMC5984644 DOI: 10.1007/s12410-018-9456-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
PURPOSE OF REVIEW The aim of this review is to highlight recent advancements, current trends, and the expanding role for cardiac CT (CCT) in the evaluation of ischemic heart disease, nonischemic cardiomyopathies, and some specific congenital myocardial disease states. RECENT FINDINGS CCT is a highly versatile imaging modality for the assessment of numerous cardiovascular disease states. Coronary CT angiography (CCTA) is now a well-established first-line imaging modality for the exclusion of significant coronary artery disease (CAD); however, CCTA has modest positive predictive value and specificity for diagnosing obstructive CAD in addition to limited capability to evaluate myocardial tissue characteristics. SUMMARY CTP, when combined with CCTA, presents the potential for full functional and anatomic assessment with a single modality. CCT is a useful adjunct in select patients to both TTE and CMR in the evaluation of ventricular volumes and systolic function. Newer applications, such as dynamic CTP and DECT, are promising diagnostic tools offering the possibility of more quantitative assessment of ischemia. The superior spatial resolution and volumetric acquisition of CCT has an important role in the diagnosis of other nonischemic causes of cardiomyopathies.
Collapse
Affiliation(s)
- Bryan C. Ramsey
- Cardiology Division, Department of Medicine, San Antonio Military Medical Center, San Antonio, TX USA
| | - Emilio Fentanes
- Cardiology Division, Department of Medicine, Tripler Army Medical Center, Honolulu, HI USA
| | - Andrew D. Choi
- Division of Cardiology, Department of Radiology, The George Washington University School of Medicine, Washington, DC USA
| | | | - Dustin M. Thomas
- Cardiology Division, Department of Medicine, San Antonio Military Medical Center, San Antonio, TX USA
| |
Collapse
|
5
|
Muslem R, Ouhlous M, Akin S, Fares AA, Soliman OI. Tricuspid Valve Disease: A Computed Tomographic Assessment. PRACTICAL MANUAL OF TRICUSPID VALVE DISEASES 2018:179-203. [DOI: 10.1007/978-3-319-58229-0_9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
|
6
|
Optimal injection method for long-range computed tomography angiography. Radiol Phys Technol 2017; 10:301-310. [DOI: 10.1007/s12194-017-0402-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Revised: 05/08/2017] [Accepted: 05/10/2017] [Indexed: 01/28/2023]
|
7
|
Karády J, Panajotu A, Kolossváry M, Szilveszter B, Jermendy ÁL, Bartykowszki A, Károlyi M, Celeng C, Merkely B, Maurovich-Horvat P. The effect of four-phasic versus three-phasic contrast media injection protocols on extravasation rate in coronary CT angiography: a randomized controlled trial. Eur Radiol 2017; 27:4538-4543. [PMID: 28540480 PMCID: PMC5635079 DOI: 10.1007/s00330-017-4866-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2016] [Revised: 03/20/2017] [Accepted: 04/03/2017] [Indexed: 11/25/2022]
Abstract
Objectives Contrast media (CM) extravasation is a well-known complication of CT angiography (CTA). Our prospective randomized control study aimed to assess whether a four-phasic CM administration protocol reduces the risk of extravasation compared to the routinely used three-phasic protocol in coronary CTA. Methods Patients referred to coronary CTA due to suspected coronary artery disease were included in the study. All patients received 400 mg/ml iomeprol CM injected with dual-syringe automated injector. Patients were randomized into a three-phasic injection-protocol group, with a CM bolus of 85 ml followed by 40 ml of 75%:25% saline/CM mixture and 30 ml saline chaser bolus; and a four-phasic injection-protocol group, with a saline pacer bolus of 10 ml injected at a lower flow rate before the three-phasic protocol. Results 2,445 consecutive patients were enrolled (mean age 60.6 ± 12.1 years; females 43.6%). Overall rate of extravasation was 0.9% (23/2,445): 1.4% (17/1,229) in the three-phasic group and 0.5% (6/1,216) in the four-phasic group (p = 0.034). Conclusions Four-phasic CM administration protocol is easy to implement in the clinical routine at no extra cost. The extravasation rate is reduced by 65% with the application of the four-phasic protocol compared to the three-phasic protocol in coronary CTA. Key Points • Four-phasic CM injection-protocol reduces extravasation rate by 65% compared to three-phasic. • The saline pacer bolus substantially reduces the risk of CM extravasation. • The implementation of four-phasic injection-protocol is at no cost.
Collapse
Affiliation(s)
- Júlia Karády
- MTA-SE Cardiovascular Imaging Research Group, Heart and Vascular Center, Semmelweis University, 68 Varosmajor Street, 1122, Budapest, Hungary
| | - Alexisz Panajotu
- MTA-SE Cardiovascular Imaging Research Group, Heart and Vascular Center, Semmelweis University, 68 Varosmajor Street, 1122, Budapest, Hungary
| | - Márton Kolossváry
- MTA-SE Cardiovascular Imaging Research Group, Heart and Vascular Center, Semmelweis University, 68 Varosmajor Street, 1122, Budapest, Hungary
| | - Bálint Szilveszter
- MTA-SE Cardiovascular Imaging Research Group, Heart and Vascular Center, Semmelweis University, 68 Varosmajor Street, 1122, Budapest, Hungary
| | - Ádám L Jermendy
- MTA-SE Cardiovascular Imaging Research Group, Heart and Vascular Center, Semmelweis University, 68 Varosmajor Street, 1122, Budapest, Hungary
| | - Andrea Bartykowszki
- MTA-SE Cardiovascular Imaging Research Group, Heart and Vascular Center, Semmelweis University, 68 Varosmajor Street, 1122, Budapest, Hungary
| | - Mihály Károlyi
- MTA-SE Cardiovascular Imaging Research Group, Heart and Vascular Center, Semmelweis University, 68 Varosmajor Street, 1122, Budapest, Hungary
| | - Csilla Celeng
- MTA-SE Cardiovascular Imaging Research Group, Heart and Vascular Center, Semmelweis University, 68 Varosmajor Street, 1122, Budapest, Hungary
| | - Béla Merkely
- MTA-SE Cardiovascular Imaging Research Group, Heart and Vascular Center, Semmelweis University, 68 Varosmajor Street, 1122, Budapest, Hungary
| | - Pál Maurovich-Horvat
- MTA-SE Cardiovascular Imaging Research Group, Heart and Vascular Center, Semmelweis University, 68 Varosmajor Street, 1122, Budapest, Hungary.
| |
Collapse
|
8
|
Khalique OK, Pulerwitz TC, Halliburton SS, Kodali SK, Hahn RT, Nazif TM, Vahl TP, George I, Leon MB, D'Souza B, Einstein AJ. Practical considerations for optimizing cardiac computed tomography protocols for comprehensive acquisition prior to transcatheter aortic valve replacement. J Cardiovasc Comput Tomogr 2016; 10:364-74. [PMID: 27475972 DOI: 10.1016/j.jcct.2016.07.007] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2016] [Accepted: 07/03/2016] [Indexed: 01/07/2023]
Abstract
Transcatheter aortic valve replacement (TAVR) is performed frequently in patients with severe, symptomatic aortic stenosis who are at high risk or inoperable for open surgical aortic valve replacement. Computed tomography angiography (CTA) has become the gold standard imaging modality for pre-TAVR cardiac anatomic and vascular access assessment. Traditionally, cardiac CTA has been most frequently used for assessment of coronary artery stenosis, and scanning protocols have generally been tailored for this purpose. Pre-TAVR CTA has different goals than coronary CTA and the high prevalence of chronic kidney disease in the TAVR patient population creates a particular need to optimize protocols for a reduction in iodinated contrast volume. This document reviews details which allow the physician to tailor CTA examinations to maximize image quality and minimize harm, while factoring in multiple patient and scanner variables which must be considered in customizing a pre-TAVR protocol.
Collapse
Affiliation(s)
- Omar K Khalique
- Columbia University Medical Center/New York Presbyterian Hospital, New York, NY, USA.
| | - Todd C Pulerwitz
- Columbia University Medical Center/New York Presbyterian Hospital, New York, NY, USA
| | | | - Susheel K Kodali
- Columbia University Medical Center/New York Presbyterian Hospital, New York, NY, USA
| | - Rebecca T Hahn
- Columbia University Medical Center/New York Presbyterian Hospital, New York, NY, USA
| | - Tamim M Nazif
- Columbia University Medical Center/New York Presbyterian Hospital, New York, NY, USA
| | - Torsten P Vahl
- Columbia University Medical Center/New York Presbyterian Hospital, New York, NY, USA
| | - Isaac George
- Columbia University Medical Center/New York Presbyterian Hospital, New York, NY, USA
| | - Martin B Leon
- Columbia University Medical Center/New York Presbyterian Hospital, New York, NY, USA
| | - Belinda D'Souza
- Columbia University Medical Center/New York Presbyterian Hospital, New York, NY, USA
| | - Andrew J Einstein
- Columbia University Medical Center/New York Presbyterian Hospital, New York, NY, USA
| |
Collapse
|
9
|
Liu K, Hsieh C, Zhuang N, Gao Y, Li Z, Ren X, Yang L, Zhang J, Budoff MJ, Lu B. Current utilization of cardiac computed tomography in mainland China: A national survey. J Cardiovasc Comput Tomogr 2015; 10:76-81. [PMID: 26699712 DOI: 10.1016/j.jcct.2015.11.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/17/2015] [Revised: 11/09/2015] [Accepted: 11/24/2015] [Indexed: 12/31/2022]
Abstract
BACKGROUND Surveys that describe the utilization of cardiac CT are available for the United States, Germany, and Taiwan, but not mainland China. OBJECTIVES To analyze the clinical utilization of cardiac CT in mainland China. METHODS A 25-item questionnaire was created and 240 tertiary hospitals were randomly selected to participate. Survey data were collected and confirmed by email as well as phone interviews. RESULTS In total, 237 (99%) hospitals consented to this survey, but 85 were excluded because of lack of cardiac CT patient volume or advanced technology. Finally, 152 (64%) questionnaires were available for analysis. Median patient volume was 1,037 patients (range: 150-8,072) annually. The most common clinical indications for coronary CT angiography were exclusion of coronary artery disease in patients with low to intermediate pretest likelihood, asymptomatic individuals with cardiovascular risk factors, and follow-up after coronary bypass grafting. The median heart rate threshold for beta blocker administration was >70 beats/min; most centers (86%) used sublingual nitroglycerin. Prospectively ECG triggered acquisition was the predominant technique in 44% of hospitals. Most (59%) providers adjusted the tube current to the body mass, but few (16%) adjusted the contrast injection rate. Per case, the mean examination duration was 14.2 min; post-processing time 13.6 min; and reporting time 18.0 min. CONCLUSIONS Cardiac CT is widely established in clinical practice in mainland China but there is a need for more uniform standards regarding performance and clinical utilization.
Collapse
Affiliation(s)
- Kun Liu
- Department of Radiologic Imaging, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, National Center of Cardiovascular Diseases, 167 Beilishi Road, Beijing 100037, China
| | - Christopher Hsieh
- Olin Business School, Washington University in St. Louis, 1 Brookings Drive, St. Louis 63130, MO, United States
| | - Nan Zhuang
- Institute of Medical Information and Library, Chinese Academy of Medical Sciences and Peking Union Medical College, 5 Dongdansantiao Street, Beijing 100005, China
| | - Yang Gao
- Department of Radiologic Imaging, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, National Center of Cardiovascular Diseases, 167 Beilishi Road, Beijing 100037, China
| | - Zhennan Li
- Department of Radiologic Imaging, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, National Center of Cardiovascular Diseases, 167 Beilishi Road, Beijing 100037, China
| | - Xinshuang Ren
- Department of Radiologic Imaging, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, National Center of Cardiovascular Diseases, 167 Beilishi Road, Beijing 100037, China
| | - Li Yang
- Department of Radiology, PLA General Hospital, 28 Fuxing Road, Beijing 100853, China
| | - Jiayin Zhang
- Institute of Diagnostic and Interventional Radiology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, 600 Yishan Road, Shanghai 200233, China
| | - Matthew Jay Budoff
- Division of Cardiology, Los Angeles Biomedical Research Institute at Harbor-UCLA, 1124 West Carson Street, Torrance 90502, CA, United States
| | - Bin Lu
- Department of Radiologic Imaging, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, National Center of Cardiovascular Diseases, 167 Beilishi Road, Beijing 100037, China.
| |
Collapse
|
10
|
Gong L, Chen J, Lu J, Fan L, Huang J, Zhang Y, Lv B, Hui R, Wang Y. The 9p21 locus is associated with coronary artery disease and cardiovascular events in the presence (but not in the absence) of coronary calcification. PLoS One 2014; 9:e94823. [PMID: 24732910 PMCID: PMC3986239 DOI: 10.1371/journal.pone.0094823] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2013] [Accepted: 03/20/2014] [Indexed: 11/26/2022] Open
Abstract
Variants at the 9p21 locus have been associated with coronary artery disease (CAD); coronary artery calcification (CAC) is related to CAD and other cardiovascular events. To determine the association of the 9p21 locus with CAD in the presence and absence of CAC, 4 groups were enrolled in a case-control study, including 527 CAD patients without CAC, 692 CAD patients with CAC, 585 individuals with simple CAC but no CAD, and 725 healthy controls. The rs1333049 representing the locus was associated with CAD in the presence of CAC (odds ratio = 1.38 in allelic analysis, 95%CI, 1.19–1.60, P<0.001), but not in the absence of CAC. Additionally, rs1333049 was not associated with simple CAC or CAC severity/extent in CAD patients with CAC. 849 CAD patients undergoing revascularization (660 with CAC and 189 without CAC) were enrolled in a cohort study to test its association with cardiovascular events in CAD patients with and without CAC in a 3-year follow-up. rs1333049 was significantly associated with the incidence of cardiovascular events in non-target vessels in patients with CAC (hazard ratio = 1.44, 95%CI, 1.08–1.91, P = 0.012), but not in those without CAC. The variants at the 9p21 locus were related to CAD and post-revascularization events only in the presence of CAC, suggesting that they may confer risk of calcification-related coronary atherosclerosis.
Collapse
Affiliation(s)
- Ling Gong
- State Key Laboratory of Cardiovascular Disease, Sino-German Laboratory for Molecular Medicine, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jinxing Chen
- State Key Laboratory of Cardiovascular Disease, Sino-German Laboratory for Molecular Medicine, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jinguo Lu
- Department of Radiology, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Lizi Fan
- Departement of Medical Ultrasonic, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jinghan Huang
- Heart Function Testing Center, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yu Zhang
- State Key Laboratory of Cardiovascular Disease, Sino-German Laboratory for Molecular Medicine, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Bin Lv
- Department of Radiology, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Rutai Hui
- State Key Laboratory of Cardiovascular Disease, Sino-German Laboratory for Molecular Medicine, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- * E-mail: (RH); (YW)
| | - Yibo Wang
- State Key Laboratory of Cardiovascular Disease, Sino-German Laboratory for Molecular Medicine, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- * E-mail: (RH); (YW)
| |
Collapse
|
11
|
Wang Y, Chen J, Zhang Y, Yu W, Zhang C, Gong L, Shao L, Lu J, Gao Y, Chen X, Chen X, Hui R. Common genetic variants of MGP are associated with calcification on the arterial wall but not with calcification present in the atherosclerotic plaques. CIRCULATION. CARDIOVASCULAR GENETICS 2013; 6:271-8. [PMID: 23677904 DOI: 10.1161/circgenetics.113.000003] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
BACKGROUND Two endophenotypes of arterial calcification, calcification on arterial wall and calcification in atherosclerotic plaques, are associated with different types of cardiovascular events. Mgp-deficient mice showed matrix Gla protein (MGP) is strongly associated with calcification on arterial wall without atherosclerotic plaques, and MGP variants were not significantly associated with myocardial infarction. MGP may play different roles in the 2 endophenotypes. METHODS AND RESULTS We analyzed the associations of MGP variants rs4236, rs1800801, and rs1800802 with the 2 endophenotypes determined by multidetector computed tomography angiography. A total of 585 with calcification on coronary artery wall, 675 with calcification in coronary atherosclerotic plaques, 454 with calcification on aortic wall, and 725 controls were enrolled. After Bonferroni correction, rs4236 and rs1800801 were still associated with calcification on arterial wall, the odds ratios were 0.708 (95% confidence interval, 0.540-0.928) for rs4236 and 0.652 (95% confidence interval, 0.479-0.888) for rs1800801 in coronary artery wall calcification, and 0.699 (95% confidence interval, 0.525-0.931) for rs4236 and 0.650 (95% confidence interval, 0.467-0.905) for rs1800801 in aortic wall calcification, respectively. The variants were correlated with calcification severity by ln(CAC Agatston score+1) in coronary artery wall calcification but not in atherosclerotic plaque calcification. In accordance with their associations with calcification on arterial wall, rs4236C and rs1800801A were associated with higher MGP plasma levels, whereas rs1800802C was associated with lower MGP levels in normal controls. Because of the role of calcification in plaque vulnerability, their associations with acute myocardial infarction were also determined in 771 controls and 752 patients, no association was found. CONCLUSIONS MGP genetic variants showed association with calcification on arterial wall but not with calcification in atherosclerotic plaques.
Collapse
Affiliation(s)
- Yibo Wang
- State Key Laboratory of Cardiovascular Disease, Sino-German Laboratory for Molecular Medicine, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
12
|
Wang Y, Lv B, Chen J, Zhang Y, Luo F, Lu N, Sun K, Hou Z, Cao H, Zeb I, Budoff M, Hui R. Intramural Coronary Arterial Course Is Associated With Coronary Arterial Stenosis and Prognosis of Major Cardiac Events. Arterioscler Thromb Vasc Biol 2013; 33:439-44. [DOI: 10.1161/atvbaha.112.300717] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Yibo Wang
- From the Sino-German Laboratory for Molecular Medicine, State Key Laboratory of Cardiovascular Disease (Y.W., J.C., Y.Z., K.S., R.H.), Department of Radiology (B.L., Z.H., H.C.), and Department of Cardiology (F.L., R.H.), Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China; Department of Cardiology, Bethune First Hospital of Jilin University, Changchun, China (N.L.); and Department of Medicine, Los Angeles
| | - Bin Lv
- From the Sino-German Laboratory for Molecular Medicine, State Key Laboratory of Cardiovascular Disease (Y.W., J.C., Y.Z., K.S., R.H.), Department of Radiology (B.L., Z.H., H.C.), and Department of Cardiology (F.L., R.H.), Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China; Department of Cardiology, Bethune First Hospital of Jilin University, Changchun, China (N.L.); and Department of Medicine, Los Angeles
| | - Jinxing Chen
- From the Sino-German Laboratory for Molecular Medicine, State Key Laboratory of Cardiovascular Disease (Y.W., J.C., Y.Z., K.S., R.H.), Department of Radiology (B.L., Z.H., H.C.), and Department of Cardiology (F.L., R.H.), Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China; Department of Cardiology, Bethune First Hospital of Jilin University, Changchun, China (N.L.); and Department of Medicine, Los Angeles
| | - Yu Zhang
- From the Sino-German Laboratory for Molecular Medicine, State Key Laboratory of Cardiovascular Disease (Y.W., J.C., Y.Z., K.S., R.H.), Department of Radiology (B.L., Z.H., H.C.), and Department of Cardiology (F.L., R.H.), Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China; Department of Cardiology, Bethune First Hospital of Jilin University, Changchun, China (N.L.); and Department of Medicine, Los Angeles
| | - Fang Luo
- From the Sino-German Laboratory for Molecular Medicine, State Key Laboratory of Cardiovascular Disease (Y.W., J.C., Y.Z., K.S., R.H.), Department of Radiology (B.L., Z.H., H.C.), and Department of Cardiology (F.L., R.H.), Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China; Department of Cardiology, Bethune First Hospital of Jilin University, Changchun, China (N.L.); and Department of Medicine, Los Angeles
| | - Na Lu
- From the Sino-German Laboratory for Molecular Medicine, State Key Laboratory of Cardiovascular Disease (Y.W., J.C., Y.Z., K.S., R.H.), Department of Radiology (B.L., Z.H., H.C.), and Department of Cardiology (F.L., R.H.), Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China; Department of Cardiology, Bethune First Hospital of Jilin University, Changchun, China (N.L.); and Department of Medicine, Los Angeles
| | - Kai Sun
- From the Sino-German Laboratory for Molecular Medicine, State Key Laboratory of Cardiovascular Disease (Y.W., J.C., Y.Z., K.S., R.H.), Department of Radiology (B.L., Z.H., H.C.), and Department of Cardiology (F.L., R.H.), Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China; Department of Cardiology, Bethune First Hospital of Jilin University, Changchun, China (N.L.); and Department of Medicine, Los Angeles
| | - Zhihui Hou
- From the Sino-German Laboratory for Molecular Medicine, State Key Laboratory of Cardiovascular Disease (Y.W., J.C., Y.Z., K.S., R.H.), Department of Radiology (B.L., Z.H., H.C.), and Department of Cardiology (F.L., R.H.), Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China; Department of Cardiology, Bethune First Hospital of Jilin University, Changchun, China (N.L.); and Department of Medicine, Los Angeles
| | - Huili Cao
- From the Sino-German Laboratory for Molecular Medicine, State Key Laboratory of Cardiovascular Disease (Y.W., J.C., Y.Z., K.S., R.H.), Department of Radiology (B.L., Z.H., H.C.), and Department of Cardiology (F.L., R.H.), Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China; Department of Cardiology, Bethune First Hospital of Jilin University, Changchun, China (N.L.); and Department of Medicine, Los Angeles
| | - Irfan Zeb
- From the Sino-German Laboratory for Molecular Medicine, State Key Laboratory of Cardiovascular Disease (Y.W., J.C., Y.Z., K.S., R.H.), Department of Radiology (B.L., Z.H., H.C.), and Department of Cardiology (F.L., R.H.), Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China; Department of Cardiology, Bethune First Hospital of Jilin University, Changchun, China (N.L.); and Department of Medicine, Los Angeles
| | - Matthew Budoff
- From the Sino-German Laboratory for Molecular Medicine, State Key Laboratory of Cardiovascular Disease (Y.W., J.C., Y.Z., K.S., R.H.), Department of Radiology (B.L., Z.H., H.C.), and Department of Cardiology (F.L., R.H.), Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China; Department of Cardiology, Bethune First Hospital of Jilin University, Changchun, China (N.L.); and Department of Medicine, Los Angeles
| | - Rutai Hui
- From the Sino-German Laboratory for Molecular Medicine, State Key Laboratory of Cardiovascular Disease (Y.W., J.C., Y.Z., K.S., R.H.), Department of Radiology (B.L., Z.H., H.C.), and Department of Cardiology (F.L., R.H.), Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China; Department of Cardiology, Bethune First Hospital of Jilin University, Changchun, China (N.L.); and Department of Medicine, Los Angeles
| |
Collapse
|
13
|
Wang Y, Xu J, Chen J, Fan X, Zhang Y, Yu W, Liu J, Hui R. Promoter variants of VTN are associated with vascular disease. Int J Cardiol 2012; 168:163-8. [PMID: 23041018 DOI: 10.1016/j.ijcard.2012.09.100] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2012] [Accepted: 09/15/2012] [Indexed: 11/17/2022]
Abstract
BACKGROUND Vitronectin is involved in the whole process of atherosclerosis. Our aim is to determine the association of VTN functional promoter variants with different types of vascular disease, and conclude the roles of vitronectin involved in vascular disease. METHODS Gel shift assays and luciferase reporter assays were used to determine the impact of variants on promoter activity. The correlation of plasma vitronectin levels with the variant was assessed in normal controls. The association of the variant with vascular disease was determined in 3 case-control studies. RESULTS A strong linkage disequilibrium was found between rs2227721 and rs2227720 in VTN promoter in Chinese (r(2)=1.0). Both variants resulted in a decreased transcription activity, and rs2227721 decreased the binding efficiency of transcription factor YY1 to the region. The rs2227721 was correlated with plasma vitronectin levels in normal controls (r=-0.207, P=0.028). The rs2227721 was associated with susceptibility of vascular disease; the odds ratios among subjects carrying rs2227721-T allele were 1.298 (95% Confidence Interval-CI, 1.033-1.631) for non-MI CAD (P<0.05), 1.346 (95% CI, 1.068-1.695) for chronic MI (P<0.05), 1.486 (95% CI, 1.145-1.928) for acute MI (P<0.001), and 1.619 (95% CI, 1.108-2.366) for deep venous thrombosis (P<0.05). CONCLUSION VTN promoter haplotype would be a novel genetic marker for vascular disease.
Collapse
Affiliation(s)
- Yibo Wang
- Sino-German Laboratory for Molecular Medicine, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, 167 Beilishi Road, Beijing 100037, China.
| | | | | | | | | | | | | | | |
Collapse
|
14
|
Abstract
Right ventricular function plays an integral role in the pathogenesis and outcome of many cardiovascular diseases. Imaging the right ventricle has long been a challenge because of its complex geometry. In recent years there has been a tremendous expansion in multidetector row CT (MDCT) and its cardiac applications. By judicious modification of contrast medium protocol, it is possible to achieve good opacification of the right-sided cardiac chambers, thereby paving the way for exploring the overshadowed right heart. This article will describe the key features of right heart anatomy, review MDCT acquisition techniques, elaborate the various morphological and functional information that can be obtained, and illustrate some important clinical conditions associated with an abnormal right heart.
Collapse
Affiliation(s)
- D Gopalan
- Department of Radiology, Papworth Hospital NHS Trust, Papworth Everard, Cambridge, UK.
| |
Collapse
|
15
|
Wang Y, Chen J, Zhang Y, Bin L, Sun K, Yu W, Liu J, Zhang C, Shen H, Hou Z, Yu F, Hui R. VKORC1 rs2359612C allele is associated with increased risk of coronary artery disease in the presence of coronary calcification. Hum Genet 2012; 132:29-37. [PMID: 22915323 DOI: 10.1007/s00439-012-1222-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2012] [Accepted: 08/08/2012] [Indexed: 12/25/2022]
Abstract
VKORC1 genetic polymorphisms affect warfarin dose response, aortic calcification, and the susceptibility of coronary artery disease as shown in our previous study. Little is known regarding the association of VKORC1 polymorphisms with coronary artery calcification (CAC) and the role of CAC in the association with coronary artery disease (CAD). Due to a natural haplotype block in the VKORC1 gene in Chinese, polymorphism rs2359612 was analyzed in a case-control study and a prospective study. The case-control study included 464 CAD patients with non-calcified plaque (NCP), 562 CAD patients with mixed calcified plaque (MCP), 492 subjects with calcified plaque (CP), and 521 controls. The rs2359612C was only associated with increased risk of MCP, the CAD in the presence of CAC; the odds ratio was 1.397 (95 % CI 1.008-1.937, P < 0.05), which was replicated in the second independent population. On the contrary, a negative correlation was observed between rs2359612 and log-transformed Agatston score, and rs2359612 was negatively associated with the number of calcified vessels. Moreover, in a prospective study including 849 CAD patients undergoing revascularization, rs2359612C predicted a higher incidence of cardiovascular events in MCP subgroup; the relative risk was 1.435 (95 % CI 1.008-2.041, P = 0.045), which was not observed in the NCP subgroup. We conclude that the rs2359612C was associated with a higher risk of CAD in the presence of CAC and a higher incidence of cardiovascular events in CAD patients with CAC, but a lower coronary calcification. VKORC1 polymorphisms may be associated with the endophenotype of CAD, calcification-related atherosclerosis.
Collapse
Affiliation(s)
- Yibo Wang
- Sino-German Laboratory for Molecular Medicine, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China.
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
16
|
Park JH, Choi SI, Chun EJ. Multidetector CT evaluation of various aortic diseases: diagnostic tips, pitfalls, and remedies for imaging artifacts. Int J Cardiovasc Imaging 2012; 28 Suppl 1:45-60. [DOI: 10.1007/s10554-012-0071-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/03/2012] [Accepted: 05/10/2012] [Indexed: 11/28/2022]
|
17
|
Coronary enhancement for prospective ECG-gated single R-R axial 320-MDCT angiography: comparison of 60- and 80-mL iopamidol 370 injection. AJR Am J Roentgenol 2011; 197:844-50. [PMID: 21940571 DOI: 10.2214/ajr.10.5980] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
OBJECTIVE The objective of our study was to evaluate the difference in coronary enhancement provided by 60 versus 80 mL of contrast medium (370 mg I/mL) for prospectively ECG-gated single-heartbeat axial 320-MDCT. MATERIALS AND METHODS We retrospectively evaluated 108 consecutive 320-MDCT angiography studies. Group 1 (n = 36) received 60 mL of an iodinated contrast medium and group 2 (n = 72), 80 mL. All patients were imaged with a standardized protocol: iopamidol 370 followed by 40 mL of saline, both administered at a rate of 6 mL/s. Two imagers subjectively assessed image quality throughout the coronary arteries. Region-of-interest attenuation (HU) measurements were performed in the aorta plus the proximal and distal coronary arteries. RESULTS Subjective analysis of all coronary segments showed slightly better image quality for group 2. Patients in group 1 had significantly (p < 0.05) lower mean attenuation values for the individual coronary vessels. Nevertheless, 96.7% of all coronary segments in the group 1 patients had an attenuation of greater than 300 HU; when analysis was limited to group 1 patients with a body mass index of greater than 30, 92.8% of the segments were more than 300 HU, and all segments measured more than 250 HU. CONCLUSION An injection protocol based on 60 mL of iopamidol (370 mg I/mL) for prospectively ECG-gated wide-area detector single-heartbeat coronary CT angiography (CTA) has less coronary enhancement than a protocol based on 80 mL. However, using 60 mL, more than 96% of coronary segments had sufficient enhancement (i.e., > 300 HU), supporting the general use of 60-mL protocols for clinical wide-area detector coronary CTA.
Collapse
|
18
|
Hur J, Kim YJ, Lee HJ, Nam JE, Ha JW, Heo JH, Chang HJ, Kim HS, Hong YJ, Kim HY, Choe KO, Choi BW. Dual-enhanced cardiac CT for detection of left atrial appendage thrombus in patients with stroke: a prospective comparison study with transesophageal echocardiography. Stroke 2011; 42:2471-7. [PMID: 21757676 DOI: 10.1161/strokeaha.110.611293] [Citation(s) in RCA: 98] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND AND PURPOSE A noninvasive method with high reliability and accuracy comparable to transesophageal echocardiography for identification of left atrial appendage thrombus would be of significant clinical value. The aim of this study was to assess the diagnostic performance of a dual-enhanced cardiac CT protocol for detection of left atrial appendage thrombi and for differentiation between thrombus and circulatory stasis in patients with stroke. METHODS We studied 83 consecutive patients with stroke (56 men and 27 women; mean age, 62.6 years) who had high risk factors for thrombus formation and had undergone both dual-source CT and transesophageal echocardiography within a 3-day period. CT was performed with prospective electrocardiographic gating, and scanning began 180 seconds after the test bolus. RESULTS Among the 83 patients, a total of 13 thrombi combined with spontaneous echo contrast and 14 spontaneous echo contrasts were detected by transesophageal echocardiography. All 13 thrombi combined with spontaneous echo contrast were correctly diagnosed on CT. Using transesophageal echocardiography as the reference standard, the overall sensitivity and specificity of CT for the detection of thrombi and circulatory stasis in the left atrial appendage were 96% (95% CI, 78% to 99%), and 100% (95% CI, 92% to 100%), respectively. On CT, the mean left atrial appendage/ascending aorta Hounsfield unit ratios were significantly different between thrombus and circulatory stasis (0.15 Hounsfield unit versus 0.27 Hounsfield unit, P=0.001). The mean effective radiation dose was 3.11 mSv. CONCLUSIONS Dual-enhanced cardiac CT with prospective electrocardiographic gating is a noninvasive and sensitive modality for detecting left atrial appendage thrombus with an acceptable radiation dose.
Collapse
Affiliation(s)
- Jin Hur
- Department of Radiology, Research Institute of Radiological Science, Severance Hospital, Yonsei University College of Medicine, 250 Seongsanno, Seodaemun-gu, Seoul 120-752, South Korea
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
19
|
Cardiovascular sources of systemic embolism: detection and characterization using multidetector CT and MR imaging. Int J Cardiovasc Imaging 2011; 27:727-44. [DOI: 10.1007/s10554-011-9878-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/10/2011] [Accepted: 04/15/2011] [Indexed: 12/27/2022]
|
20
|
Cardiothoracic CT angiography: current contrast medium delivery strategies. AJR Am J Roentgenol 2011; 196:W260-72. [PMID: 21343473 DOI: 10.2214/ajr.10.5814] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
OBJECTIVE Over the last decade, rapid technologic evolution in CT has resulted in improved spatial and temporal resolution and acquisition speed, enabling cardiothoracic CT angiography to become a viable and effective noninvasive alternative in the diagnostic algorithm. These new technologic advances have imposed new challenges for the optimization of contrast medium delivery and image acquisition strategies. CONCLUSION Thorough understanding of contrast medium dynamics is essential for the design of effective acquisition and injection protocols. This article provides an overview of the fundamentals affecting contrast enhancement, emphasizing the modifications to contrast material delivery protocols required to optimize cardiothoracic CT angiography.
Collapse
|
21
|
|
22
|
Jinzaki M, Kitagawa K, Tsai IC, Chan C, Yu W, Yong HS, Choi BW. ASCI 2010 contrast media guideline for cardiac imaging: a report of the Asian Society of Cardiovascular Imaging cardiac computed tomography and cardiac magnetic resonance imaging guideline working group. Int J Cardiovasc Imaging 2010; 26:203-12. [PMID: 20931289 PMCID: PMC2996539 DOI: 10.1007/s10554-010-9691-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/12/2010] [Accepted: 08/14/2010] [Indexed: 11/23/2022]
Abstract
The use of contrast media for cardiac imaging becomes increasing as the widespread of cardiac CT and cardiac MR. A radiologist needs to carefully consider the indication and the injection protocol of contrast media to be used as well as the possibility of adverse effect. There are several guidelines for contrast media in western countries. However, these are focusing the adverse effect of contrast media. The Asian Society of Cardiovascular Imaging, the only society dedicated to cardiovascular imaging in Asia, formed a Working Group and created a guideline, which summarizes the integrated knowledge of contrast media for cardiac imaging. In cardiac imaging, coronary artery evaluation is feasible by non-contrast MR angiography, which can be an alternative examination in high risk patients for the use of iodine contrast media. Furthermore, the body habitus of Asian patients is usually smaller than that of their western counterparts. This necessitates modifications in the injection protocol and in the formula for calculation of estimated glomerular filtration rate. This guideline provided fundamental information for the use of contrast media for Asian patients in cardiac imaging.
Collapse
Affiliation(s)
- ASCI CCT & CMR Guideline Working Group
- Department of Diagnostic Radiology, Keio University School of Medicine, Tokyo, Japan
- Department of Diagnostic Radiology, Mie University School of Medicine, Tsu, Japan
- Department of Radiology, Taichung Veterans General Hospital, Taichung, Taiwan
- Division of Cardiology, Department of Medicine, Queen Mary Hospital, Hong Kong, China
- Department of Radiology, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
- Department of Radiology, Korea University Guro Hospital, Seoul, Korea
- Department of Radiology, Research Institute of Radiological Science, Severance Hospital, Yonsei University Health System, Seoul, Korea
| | - Masahiro Jinzaki
- Department of Diagnostic Radiology, Keio University School of Medicine, Tokyo, Japan
| | - Kakuya Kitagawa
- Department of Diagnostic Radiology, Mie University School of Medicine, Tsu, Japan
| | - I-Chen Tsai
- Department of Radiology, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Carmen Chan
- Division of Cardiology, Department of Medicine, Queen Mary Hospital, Hong Kong, China
| | - Wei Yu
- Department of Radiology, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Hwan Seok Yong
- Department of Radiology, Korea University Guro Hospital, Seoul, Korea
| | - Byoung Wook Choi
- Department of Radiology, Research Institute of Radiological Science, Severance Hospital, Yonsei University Health System, Seoul, Korea
| |
Collapse
|