1
|
Ha S, Jang Y, Lee BK, Hong Y, Kim BK, Park S, Yoo SK, Chang HJ. Simultaneous Viability Assessment and Invasive Coronary Angiography Using a Therapeutic CT System in Chronic Myocardial Infarction Patients. Yonsei Med J 2024; 65:257-264. [PMID: 38653564 PMCID: PMC11045343 DOI: 10.3349/ymj.2023.0208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 12/13/2023] [Accepted: 12/23/2023] [Indexed: 04/25/2024] Open
Abstract
PURPOSE In a preclinical study using a swine myocardial infarction (MI) model, a delayed enhancement (DE)-multi-detector computed tomography (MDCT) scan was performed using a hybrid system alongside diagnostic invasive coronary angiography (ICA) without the additional use of a contrast agent, and demonstrated an excellent correlation in the infarct area compared with histopathologic specimens. In the present investigation, we evaluated the feasibility and diagnostic accuracy of a myocardial viability assessment by DE-MDCT using a hybrid system comprising ICA and MDCT alongside diagnostic ICA without the additional use of a contrast agent. MATERIALS AND METHODS We prospectively enrolled 13 patients (median age: 67 years) with a previous MI (>6 months) scheduled to undergo ICA. All patients underwent cardiac magnetic resonance (CMR) imaging before diagnostic ICA. MDCT viability scans were performed concurrently with diagnostic ICA without the use of additional contrast. The total myocardial scar volume per patient and average transmurality per myocardial segment measured by DE-MDCT were compared with those from DE-CMR. RESULTS The DE volume measured by MDCT showed an excellent correlation with the volume measured by CMR (r=0.986, p<0.0001). The transmurality per segment by MDCT was well-correlated with CMR (r=0.900, p<0.0001); the diagnostic performance of MDCT in differentiating non-viable from viable myocardium using a 50% transmurality criterion was good with a sensitivity, specificity, positive predictive value, negative predictive value, and accuracy of 87.5%, 99.5%, 87.5%, 99.5%, and 99.1%, respectively. CONCLUSION The feasibility of the DE-MDCT viability assessment acquired simultaneously with conventional ICA was proven in patients with chronic MI using DE-CMR as the reference standard.
Collapse
Affiliation(s)
- Seongmin Ha
- Graduate Program of Biomedical Engineering, Yonsei University College of Medicine, Seoul, Korea
- CONNECT-AI Research Center, Yonsei University College of Medicine, Seoul, Korea
| | - Yeonggul Jang
- CONNECT-AI Research Center, Yonsei University College of Medicine, Seoul, Korea
- Brain Korea 21 Project for Medical Science Yonsei University, Seoul, Korea
| | - Byoung Kwon Lee
- Department of Internal Medicine, Yonsei University Gangnam Severance Hospital, Seoul, Korea
| | - Youngtaek Hong
- CONNECT-AI Research Center, Yonsei University College of Medicine, Seoul, Korea
- Ontact Health Co., Ltd., Seoul, Korea
| | - Byeong-Keuk Kim
- Division of Cardiology, Severance Cardiovascular Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Seil Park
- Cardiovascular Product Evaluation Center, Yonsei University College of Medicine, Seoul, Korea
| | - Sun Kook Yoo
- Department of Medical Engineering, Yonsei University College of Medicine, Seoul, Korea.
| | - Hyuk-Jae Chang
- CONNECT-AI Research Center, Yonsei University College of Medicine, Seoul, Korea
- Ontact Health Co., Ltd., Seoul, Korea
- Division of Cardiology, Severance Cardiovascular Hospital, Yonsei University College of Medicine, Seoul, Korea.
| |
Collapse
|
2
|
Jang Y, Cho I, Hartaigh BWÓ, Park SI, Hong Y, Shin S, Ha S, Jeon B, Jung H, Shim H, Min JK, Chang HJ, Jang Y, Chung N. Viability assessment after conventional coronary angiography using a novel cardiovascular interventional therapeutic CT system: Comparison with gross morphology in a subacute infarct swine model. J Cardiovasc Comput Tomogr 2015; 9:321-328. [PMID: 26088379 DOI: 10.1016/j.jcct.2015.04.006] [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] [Received: 09/12/2014] [Revised: 03/30/2015] [Accepted: 04/18/2015] [Indexed: 10/23/2022]
Abstract
BACKGROUND Given the lack of promptness and inevitable use of additional contrast agents, the myocardial viability imaging procedures have not been used widely for determining the need to performing revascularization. OBJECTIVE This study is aimed to evaluate the feasibility of myocardial viability assessment, consecutively with diagnostic invasive coronary angiography (ICA) without use of additional contrast agent, using a novel hybrid system comprising ICA and multislice CT (MSCT). METHODS In all, 14 Yucatan miniature swine models (female; age, 3 months; weight, 28-30 kg) were subjected to ICA followed by balloon occlusion (90 minutes) and reperfusion of the left anterior descending coronary artery. Two weeks after induction of myocardial infarction, delayed hyperenhancement (DHE) images were obtained, using a novel combined machine comprising ICA and 320-channel MSCT scanner (Aquilion ONE, Toshiba), after 2, 5, 7, 10, 15, and 20 minutes after conventional ICA. The heart was sliced in 10-mm consecutive sections in the short-axis plane and was embedded in a solution of 1% triphenyltetrazolium chloride (TTC). Infarct size was determined as TTC-negative areas as a percentage of total left ventricular area. On MSCT images, infarct size per slice was calculated by dividing the DHE area by the total slice area (%) and compared with histochemical analyses. RESULTS Serial MSCT scans revealed a peak CT attenuation of the infarct area (222.5 ± 36.5 Hounsfield units) with a maximum mean difference in CT attenuation between the infarct areas and normal myocardium of at 2 minutes after contrast injection (106.4; P for difference = 0.002). Furthermore, the percentage difference of infarct size by MSCT vs histopathologic specimen was significantly lower at 2 (8.5% ± 1.8%) and 5 minutes (9.5% ± 1.9%) than those after 7 minutes. Direct comparisons of slice-matched DHE area by MSCT demonstrated excellent correlation with TTC-derived infarct size (r = 0.952; P < .001). Bland-Altman plots of the differences between DHE by MSCT and TTC-derived infarct measurements plotted against their means showed good agreement between the 2 methods. CONCLUSION The feasibility of myocardial viability assessment by DHE using MSCT after conventional ICA was proven in experimental models, and the optimal viability images were obtained after 2 to 5 minutes after the final intracoronary injection of contrast agent for conventional ICA.
Collapse
Affiliation(s)
- Yeonggul Jang
- Brain Korea 21 Project for Medical Science, Yonsei University, Seoul, Korea
| | - Iksung Cho
- Division of Cardiology, Department of Internal Medicine, Severance Cardiovascular Hospital, Yonsei University College of Medicine, 250 Seongsanno, Seodaemungu, Seoul 120-752, Korea
| | - Bríain W Ó Hartaigh
- Department of Radiology, New York-Presbyterian Hospital and the Weill Cornell Medical College, New York, NY, USA.,Section of Geriatrics, Department of Internal Medicine, Yale School of Medicine, Adler Geriatric Center, New Haven, CT, USA
| | - Se-Il Park
- Cardiovascular Product Evaluation Center, Yonsei University College of Medicine, Seoul, Korea
| | - Youngtaek Hong
- Brain Korea 21 Project for Medical Science, Yonsei University, Seoul, Korea
| | - Sanghoon Shin
- Division of Cardiology, Department of Internal Medicine, Severance Cardiovascular Hospital, Yonsei University College of Medicine, 250 Seongsanno, Seodaemungu, Seoul 120-752, Korea
| | - Seongmin Ha
- Brain Korea 21 Project for Medical Science, Yonsei University, Seoul, Korea
| | - Byunghwan Jeon
- Brain Korea 21 Project for Medical Science, Yonsei University, Seoul, Korea
| | - Hoyup Jung
- Department of Computer Science and Engineering, Hankuk University of Foreign Studies, Kyonggi, 449-791, Korea
| | - Hackjoon Shim
- Cardiovascular Research Institute, Yonsei University College of Medicine, Seoul, Korea
| | - James K Min
- Department of Radiology, New York-Presbyterian Hospital and the Weill Cornell Medical College, New York, NY, USA
| | - Hyuk-Jae Chang
- Division of Cardiology, Department of Internal Medicine, Severance Cardiovascular Hospital, Yonsei University College of Medicine, 250 Seongsanno, Seodaemungu, Seoul 120-752, Korea.,Cardiovascular Research Institute, Yonsei University College of Medicine, Seoul, Korea
| | - Yangsoo Jang
- Division of Cardiology, Department of Internal Medicine, Severance Cardiovascular Hospital, Yonsei University College of Medicine, 250 Seongsanno, Seodaemungu, Seoul 120-752, Korea
| | - Namsik Chung
- Division of Cardiology, Department of Internal Medicine, Severance Cardiovascular Hospital, Yonsei University College of Medicine, 250 Seongsanno, Seodaemungu, Seoul 120-752, Korea.,Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, Korea
| |
Collapse
|
3
|
Kim YJ, Yong HS, Kim SM, Kim JA, Yang DH, Hong YJ. Korean guidelines for the appropriate use of cardiac CT. Korean J Radiol 2015; 16:251-85. [PMID: 25741189 PMCID: PMC4347263 DOI: 10.3348/kjr.2015.16.2.251] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2014] [Accepted: 01/03/2015] [Indexed: 01/07/2023] Open
Abstract
The development of cardiac CT has provided a non-invasive alternative to echocardiography, exercise electrocardiogram, and invasive angiography and cardiac CT continues to develop at an exponential speed even now. The appropriate use of cardiac CT may lead to improvements in the medical performances of physicians and can reduce medical costs which eventually contribute to better public health. However, until now, there has been no guideline regarding the appropriate use of cardiac CT in Korea. We intend to provide guidelines for the appropriate use of cardiac CT in heart diseases based on scientific data. The purpose of this guideline is to assist clinicians and other health professionals in the use of cardiac CT for diagnosis and treatment of heart diseases, especially in patients at high risk or suspected of heart disease.
Collapse
Affiliation(s)
- Young Jin Kim
- Department of Radiology, Severance Hospital, Yonsei University College of Medicine, Seoul 120-752, Korea
| | - Hwan Seok Yong
- Department of Radiology, Korea University Guro Hospital, Korea University College of Medicine, Seoul 152-703, Korea
| | - Sung Mok Kim
- Department of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 135-710, Korea
| | - Jeong A Kim
- Department of Radiology, Ilsan Paik Hospital, Inje University College of Medicine, Goyang 411-706, Korea
| | - Dong Hyun Yang
- Department of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul 138-736, Korea
| | - Yoo Jin Hong
- Department of Radiology, Severance Hospital, Yonsei University College of Medicine, Seoul 120-752, Korea
| | | | | |
Collapse
|
4
|
Affiliation(s)
- Hrvoje Lusic
- Boston University, Departments of Biomedical Engineering and Chemistry, Metcalf Center for Science and Engineering, 590 Commonwealth Ave., Boston, MA 02215. Fax: 617-358-3186; Tel: 617-353-3871
| | - Mark W. Grinstaff
- Boston University, Departments of Biomedical Engineering and Chemistry, Metcalf Center for Science and Engineering, 590 Commonwealth Ave., Boston, MA 02215. Fax: 617-358-3186; Tel: 617-353-3871
| |
Collapse
|
5
|
Saeed M, Hetts SW, Do L, Sullivan S, Wilson MW. MDCT has the potential to predict percutaneous coronary intervention outcome in swine model: microscopic validation. Acta Radiol 2012; 53:987-94. [PMID: 22993269 DOI: 10.1258/ar.2012.120407] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
BACKGROUND Volumes and sizes of dislodged coronary microemboli vary during PCI so their effects at the left ventricular (LV) and cellular levels cannot be quantified. Furthermore, biopsy for tissue characterization is not an option in PCI patients. PURPOSE To characterize and validate microinfarct size, LAD territory where microinfarct were found using multidetector computed tomography (MDCT), histochemical staining and microscopy as a function of microemboli volumes and to scale the effects of microemboli volumes on LV function. MATERIAL AND METHODS Under X-ray guidance, a 3F catheter was inserted into LAD coronary artery of 14 pigs for delivering 16 mm(3) or 32 mm(3) of 40-120 μm microemboli. MDCT imaging/histochemical staining/microscopy were performed 3 days later and used to characterize regional and global structural and functional changes in LV by threshold/planimetric methods. RESULTS MDCT and ex-vivo methods were able to quantify microinfarct size and LAD territory where microinfarct was found as a function of volumes. However, MDCT and histochemical staining significantly underestimated microinfarct size and territory where microinfarct was found compared with microscopy. MDCT demonstrated the functional changes and showed a moderate correlation between LV ejection fraction and microinfarct size (r = 0.53). Microscopy provided higher spatial resolution for measuring islands of necrotic cells, which explains the difference in measuring structural changes. CONCLUSION MDCT showed the difference in microinfarct size and LAD territory as a function of microemboli volumes and scaled the changes in LV function. This experimental study gives clinicians a reference for the effects of defined microemboli volumes on myocardial viability and LV function and the under-estimation of microinfarct on MDCT.
Collapse
Affiliation(s)
- Maythem Saeed
- Interventional Radiology Laboratory, Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, USA
| | - Steven W Hetts
- Interventional Radiology Laboratory, Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, USA
| | - Loi Do
- Interventional Radiology Laboratory, Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, USA
| | - Sammir Sullivan
- Interventional Radiology Laboratory, Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, USA
| | - Mark W Wilson
- Interventional Radiology Laboratory, Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, USA
| |
Collapse
|
6
|
Spectral CT imaging of myocardial infarction: preliminary animal experience. Eur Radiol 2012; 23:133-8. [PMID: 22814826 DOI: 10.1007/s00330-012-2560-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2012] [Accepted: 06/04/2012] [Indexed: 01/02/2023]
Abstract
OBJECTIVES To evaluate the capability of spectral CT imaging to detect the different stages and angiogenesis of myocardial infarction (MI). METHODS MI was surgically induced in 40 rabbits that were evenly divided into four stages of MI: 6 h (6H), 3 days (3D), 7 days (7D) and 14 days (14D). Spectral CT was performed at 10 s, 1 min and 3 min after intravenous contrast medium administration. CD31 immunohistochemistry was used for the microvessel density (MVD) measurement. Iodine concentrations in the myocardium were measured and normalised to the aorta as nIC. The relationships between infarcted myocardial nIC and MVD were analysed. RESULTS The nIC of infarct myocardium decreased at 10 s and increased in late-phase CT images. There were significant differences between the 6H and other groups (P ( 6H-3D ) = 0.01, P ( 6H-7D ) = 0.01, P ( 6H-14D ) = 0.00). There was a significant difference in the MVD of infarct myocardium between the two groups except in the 7D and 14D groups (P = 0.08). In the 10-s phase, the nIC of infarct myocardium was negatively correlated with MVD (r = -0.54, P = 0.00), whereas in the late phases, there was a positive correlation between them (r = 0.57, P = 0.00 in the 1-min phase, r = 0.48, P = 0.00 in the 3-min phase). CONCLUSION Spectral CT imaging of the myocardium can be used to evaluate the different stages and angiogenesis of MI.
Collapse
|
7
|
Saeed M, Hetts SW, Ursell PC, Do L, Kolli KP, Wilson MW. Evaluation of the acute effects of distal coronary microembolization using multidetector computed tomography and magnetic resonance imaging. Magn Reson Med 2011; 67:1747-57. [PMID: 21956356 DOI: 10.1002/mrm.23149] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2011] [Revised: 07/19/2011] [Accepted: 07/21/2011] [Indexed: 12/16/2022]
Abstract
The purpose of this study was to test the potential of clinical imaging modalities, 64-slice multidetector computed tomography (MDCT) and 1.5T magnetic resonance imaging (MRI) for qualitative and quantitative evaluation of acute microinfarcts and to determine the effects of <120 μm microemboli on left ventricular function, perfusion, cardiac injury biomarkers, arrhythmia, and cellular and vascular structures. Under X-ray fluoroscopy, 40-120 μm (16 mm(3) ) microemboli were delivered to embolize the left anterior descending (LAD) coronary artery of nine pigs. MDCT/MRI were performed at 72 h in a single session. Microinfarcts were visible in six of nine animals on delayed contrast-enhanced MDCT/MR images but measurable in all animals using semiautomated threshold methods. Other MDCT and MRI sequences demonstrated decline in left ventricular ejection fraction, regional strain and perfusion in visible and invisible microinfarcted regions. Microemboli caused significant elevation in cardiac injury enzymes and arrhythmias. Various sizes of microinfarcts appeared microscopically as distinct aggregates of macrophages replacing myocardium. Semiautomated threshold methods are necessary to measure and confirm/deny the presence of myocardial microinfarcts. This study offers support for alternative applications of MDCT/MRI in assessing clinical cases in which microemboli <120 μm escape protective devices during percutaneous coronary interventions. Although microembolization resulted in no mortality, it caused left ventricular dysfunction, perfusion deficit, cellular damage increase in cardiac injury enzymes, and arrhythmias.
Collapse
Affiliation(s)
- Maythem Saeed
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, California 94107-5705, USA.
| | | | | | | | | | | |
Collapse
|
8
|
Abstract
Over recent decades, noninvasive imaging has become well established in the diagnostic work-up of patients suffering from myocardial infarction. It provides insights into the individual patient's prognosis and guides therapeutic decisions. MRI has long been considered the standard of reference in the noninvasive imaging of myocardial infarction. Only recently have different multidetector-row spiral computed tomography (MDCT) techniques successfully been evaluated for the visualization of myocardial infarction. This article describes different concepts of cardiac MDCT imaging in acute and chronic myocardial infarction. MDCT assessment of myocardial edema, myocardial perfusion and delayed myocardial contrast enhancement are introduced, with the latter evolving as key concept of viability imaging by means of MDCT. The current status of MDCT in the diagnostic work-up of myocardial infarction is reviewed.
Collapse
Affiliation(s)
- Andreas H Mahnken
- Department of Diagnostic and Interventional Radiology, University Hospital, RWTH Aachen University, Pauwelsstrasse 30, D-52074 Aachen, Germany.
| |
Collapse
|
9
|
Saeed M, Hetts SW, English J, Do L, Wilson MW. Quantitative and qualitative characterization of the acute changes in myocardial structure and function after distal coronary microembolization using MDCT. Acad Radiol 2011; 18:479-87. [PMID: 21237677 DOI: 10.1016/j.acra.2010.11.016] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2010] [Revised: 11/23/2010] [Accepted: 11/25/2010] [Indexed: 12/30/2022]
Abstract
RATIONALE AND OBJECTIVES To determine the potential of multidetector computed tomography (MDCT) in assessing, at 72 hours, the effects of distal coronary microembolization on myocardial structure and function. MATERIALS AND METHODS Microembolic material (total volume=16 mm(3) of 40-120 μm diameter) was selectively delivered in the left anterior descending coronary artery under x-ray fluoroscopy (n = 6 pigs). After 72 hours, 64-slice MDCT was used to assess LV function, perfusion, and viability. For comparison between the measurements at 80 kV, 120 kV, and postmortem we used Bland-Altman and Pearson correlation. Histochemical and histopathological staining was used for quantitative and qualitative characterization of microinfarct. RESULTS Cine MDCT showed the deleterious effects of microembolization on systolic wall thickening, LV volumes, and ejection fraction. Perfusion parameters, such as max upslope, peak attenuation, and time to peak, differed between microinfarct territory and remote myocardium. Inconsistency in visualizing microinfarct was observed using tube voltages of 80 kV and 120 kV. The extent of heterogeneous microinfarct was 4.5 ± 1.0 % of LV mass at 80 kV, 6.1 ± 0.9% LV at 120 kV, and 5.9 ± 1.1% LV on postmortem. There was significant difference in the extent of microinfarct measured on 80 kV MDCT compared with 120 kV and postmortem. Microscopic examination revealed the random distribution of obstructed microvessels surrounded by myocardial necrosis and inflammatory cells in all animals. CONCLUSION Both visible and nonvisible microinfarct cause perfusion deficit and LV dysfunction. MDCT is sensitive for quantifying early functional changes in LV caused by microembolization. Further improvement in spatial resolution of this technology is needed to improve visualization of microinfarct.
Collapse
Affiliation(s)
- Maythem Saeed
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, 94107-5705, USA.
| | | | | | | | | |
Collapse
|
10
|
The culprit lesion and its consequences: combined visualization of the coronary arteries and delayed myocardial enhancement in dual-source CT: a pilot study. Eur Radiol 2010; 20:2834-43. [DOI: 10.1007/s00330-010-1864-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2010] [Accepted: 05/04/2010] [Indexed: 01/10/2023]
|