Myocarditis MRI: Difference between revisions
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==Overview== | ==Overview== | ||
[[Cardiac MRI]] findings associated with [[myocarditis]] include [[myocardial inflammation]], [[myocardial edema]], [[capillary leak]], and [[reduced left ventricular function]]. While the | [[Cardiac]] [[MRI]] is indicated in [[patients]] with new or persisting [[symptoms]] of [[chest pain]] and [[congestive heart failure]], who have [[evidence]] of [[significant]] [[myocardial injury]], in the absence of or in whom there is a low suspicion of coronary [[Atherosclerosis|atherosclerosis.]] [[Cardiac MRI]] findings associated with [[myocarditis]] include [[myocardial inflammation]], [[myocardial edema]], [[capillary leak]], and [[reduced left ventricular function]]. While the [[CMR]] pattern of [[gadolinium]] hyperenhancement in [[ST segment elevation myocardial infarction]] is transmural and extends from the [[endocardium]] to the [[epicardium]], the patchy, non-segmental hyperenhancement pattern in [[myocarditis]] in contrast involves the [[epicardium]] and spares the [[Endocardium|subendocardium]]. [[CMR]] has a [[sensitivity]] of 76%, [[specificity]] of 95.5%, and overall [[diagnostic]] [[accuracy]] of 85% when any-two of the following three sequences are used, focal and global T2 signal [[intensity]], [[myocardial]] global relative enhancement, and delayed [[gadolinium]] enhancement. | ||
==Findings on MRI== | |||
*Performance of [[cardiac]] [[MRI]] is generally [[Indication|indicated]] in those [[patients]] with new or persisting [[symptoms]] of [[chest pain]] and [[congestive heart failure]], who have [[evidence]] of [[significant]] [[myocardial injury]], in the absence of or in whom there is a low suspicion of coronary [[atherosclerosis]].<ref name="pmid19389557">{{cite journal| author=Friedrich MG, Sechtem U, Schulz-Menger J, Holmvang G, Alakija P, Cooper LT et al.| title=Cardiovascular magnetic resonance in myocarditis: A JACC White Paper. | journal=J Am Coll Cardiol | year= 2009 | volume= 53 | issue= 17 | pages= 1475-87 | pmid=19389557 | doi=10.1016/j.jacc.2009.02.007 | pmc=PMC2743893 | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=19389557 }}</ref> | |||
*[[Cardiac MRI]] may be helpful in the [[diagnosis]] of myocarditis. Findings on [[CMR]] suggestive of myocarditis include:<ref name="pmid15936612">{{cite journal| author=Abdel-Aty H, Boyé P, Zagrosek A, Wassmuth R, Kumar A, Messroghli D et al.| title=Diagnostic performance of cardiovascular magnetic resonance in patients with suspected acute myocarditis: comparison of different approaches. | journal=J Am Coll Cardiol | year= 2005 | volume= 45 | issue= 11 | pages= 1815-22 | pmid=15936612 | doi=10.1016/j.jacc.2004.11.069 | pmc= | http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=15936612 }} </ref><ref>{{cite journal |author=Skouri HN, Dec GW, Friedrich MG, Cooper LT |title=Noninvasive imaging in myocarditis |journal=J. Am. Coll. Cardiol. |volume=48 |issue=10 |pages=2085-93 |year=2006 |pmid=17112998 |doi=10.1016/j.jacc.2006.08.017}}</ref><ref name="pmid21106555">{{cite journal| author=Monney PA, Sekhri N, Burchell T, Knight C, Davies C, Deaner A et al.| title=Acute myocarditis presenting as acute coronary syndrome: role of early cardiac magnetic resonance in its diagnosis. | journal=Heart | year= 2011 | volume= 97 | issue= 16 | pages= 1312-8 | pmid=21106555 | doi=10.1136/hrt.2010.204818 | pmc= | http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=21106555 }} </ref><ref name="pmid19898290">{{cite journal| author=Al-Mallah M, Kwong RY| title=Clinical application of cardiac CMR. | journal=Rev Cardiovasc Med | year= 2009 | volume= 10 | issue= 3 | pages= 134-41 | pmid=19898290 | doi= | pmc= | url= }} </ref><ref name="pmid19389557">{{cite journal| author=Friedrich MG, Sechtem U, Schulz-Menger J, Holmvang G, Alakija P, Cooper LT et al.| title=Cardiovascular magnetic resonance in myocarditis: A JACC White Paper. | journal=J Am Coll Cardiol | year= 2009 | volume= 53 | issue= 17 | pages= 1475-87 | pmid=19389557 | doi=10.1016/j.jacc.2009.02.007 | pmc=PMC2743893 | http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=19389557 }}</ref><ref>{{cite journal |author=Skouri HN, Dec GW, Friedrich MG, Cooper LT |title=Noninvasive imaging in myocarditis |journal=J. Am. Coll. Cardiol. |volume=48 |issue=10 |pages=2085-93 |year=2006 |pmid=17112998 |doi=10.1016/j.jacc.2006.08.017}}</ref> | |||
**[[Myocardial inflammation]]: [[Myocardial inflammation]] associated with myocarditis appears as a high [[intensity]] [[Signal (biology)|signal]] with delayed [[gadolinium]] hyperenhancement on [[cardiac MRI]] ([[CMR]]). While the [[CMR]] [[pattern]] of [[gadolinium]] hyperenhancement in [[ST segment elevation myocardial infarction]] is [[Transmural care|transmural]] and [[extends]] from the [[endocardium]] to the [[epicardium]], the patchy, non-segmental hyperenhancement [[pattern]] in [[myocarditis]] in contrast involves the [[epicardium]] and spares the [[Endocardium|subendocardium]]. The areas of hyperenhancement are often observed in the [[lateral]] and inferior territories of the [[heart]]. When used in conjunction with the findings on [[coronary angiography]], [[CMR]] is useful in distinguishing between a [[diagnosis]] of [[myocarditis]] and [[myonecrosis]] associated with [[myocardial ischemia]]. | |||
**[[Myocardial edema]]: High T2 signal intensity areas suggests [[myocardial edema]]. | |||
**[[Myocardial]] [[scar]]: [[Gadolinium]]-enhanced [[magnetic resonance imaging]] ([[Magnetic resonance imaging|MRI]]) may also aid in assessing the extent of [[myocardial]] [[Scar|scarring]] (areas of delayed [[gadolinium]] enhancement) which is largely confined to the [[epicardium]]. | |||
**[[Myocardial]] [[capillary leak]]: [[Myocardial]] early [[gadolinium]] enhancement ratio (ratio between [[myocardium]] and [[skeletal muscle]]) ≥ 4.0 is suggestive of [[hyperemia]] and [[capillary]] leakage. | |||
**[[Myocardial]] [[dysfunction]]: [[Cardiac MRI]] can be used to assess for the presence of and severity of [[myocardial]] [[dysfunction]] associated with [[myocarditis]]. | |||
**Associated [[pericardial effusion]]: [[Cardiac MRI]] can be used to assess for the presence of and severity of a [[pericardial effusion]] associated with [[myocarditis]]. The association of a [[pericardial effusion]] along with [[myocarditis]] is referred to as [[myopericarditis]]. | |||
[[File:CMR of acute myocarditis.jpeg|450px|none|thumb|https://radiopaedia.org/cases/myocarditis?lang=us]] | |||
[[File:4 chamber CMR of acute myocarditis.jpeg|450px|none|thumb|https://radiopaedia.org/cases/myocarditis?lang=us]] | |||
[[File:Short axis T1 acute myocarditis.jpeg|450px|none|thumb|https://radiopaedia.org/cases/acute-myocarditis-1?lang=us]] | |||
[[File:Short axis T2 acute myocarditis.jpeg|450px|none|thumb|https://radiopaedia.org/cases/acute-myocarditis-1?lang=us]] | |||
==Sensitivity and Specificity== | |||
* [[CMR]] was reported to have a [[sensitivity]] of 76%, [[specificity]] of 95.5%, and overall [[diagnostic]] [[accuracy]] of 85% when any-two of the following three sequences were used:<ref name="pmid15936612">{{cite journal| author=Abdel-Aty H, Boyé P, Zagrosek A, Wassmuth R, Kumar A, Messroghli D et al.| title=Diagnostic performance of cardiovascular magnetic resonance in patients with suspected acute myocarditis: comparison of different approaches. | journal=J Am Coll Cardiol | year= 2005 | volume= 45 | issue= 11 | pages= 1815-22 | pmid=15936612 | doi=10.1016/j.jacc.2004.11.069 | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=15936612 }} </ref><ref name="pmid14993139">{{cite journal| author=Mahrholdt H, Goedecke C, Wagner A, Meinhardt G, Athanasiadis A, Vogelsberg H et al.| title=Cardiovascular magnetic resonance assessment of human myocarditis: a comparison to histology and molecular pathology. | journal=Circulation | year= 2004 | volume= 109 | issue= 10 | pages= 1250-8 | pmid=14993139 | doi=10.1161/01.CIR.0000118493.13323.81 | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=14993139 }} </ref> | |||
**Focal and global T2 signal [[intensity]] | |||
**[[Myocardial]] global relative enhancement | |||
**Delayed [[gadolinium]] enhancement | |||
==ACC/AHA Guidelines- ACCF/ACR/AHA/NASCI/SCMR 2010 Expert Consensus Document on Cardiovascular Magnetic Resonance: Indications to Perform Cardiac MRI in the Patient with Suspected Myocarditis<ref name="pmid20479157">{{cite journal| author=American College of Cardiology Foundation Task Force on Expert Consensus Documents. Hundley WG, Bluemke DA, Finn JP, Flamm SD, Fogel MA et al.| title=ACCF/ACR/AHA/NASCI/SCMR 2010 expert consensus document on cardiovascular magnetic resonance: a report of the American College of Cardiology Foundation Task Force on Expert Consensus Documents. | journal=Circulation | year= 2010 | volume= 121 | issue= 22 | pages= 2462-508 | pmid=20479157 | doi=10.1161/CIR.0b013e3181d44a8f | pmc=PMC3034132 | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=20479157 }} </ref> (DO NOT EDIT)== | ==ACC/AHA Guidelines- ACCF/ACR/AHA/NASCI/SCMR 2010 Expert Consensus Document on Cardiovascular Magnetic Resonance: Indications to Perform Cardiac MRI in the Patient with Suspected Myocarditis<ref name="pmid20479157">{{cite journal| author=American College of Cardiology Foundation Task Force on Expert Consensus Documents. Hundley WG, Bluemke DA, Finn JP, Flamm SD, Fogel MA et al.| title=ACCF/ACR/AHA/NASCI/SCMR 2010 expert consensus document on cardiovascular magnetic resonance: a report of the American College of Cardiology Foundation Task Force on Expert Consensus Documents. | journal=Circulation | year= 2010 | volume= 121 | issue= 22 | pages= 2462-508 | pmid=20479157 | doi=10.1161/CIR.0b013e3181d44a8f | pmc=PMC3034132 | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=20479157 }} </ref> (DO NOT EDIT)== | ||
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*[[Syncope]] or ventricular arrhythmia. | *[[Syncope]] or ventricular arrhythmia. | ||
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==References== | ==References== | ||
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[[Category:Medicine]] | [[Category:Medicine]] | ||
[[Category:Cardiology]] | [[Category:Cardiology]] | ||
[[Category:Up-To-Date | [[Category:Up-To-Date]] | ||
[[Category:Emergency medicine]] | [[Category:Emergency medicine]] | ||
[[Category:Intensive care medicine]] | [[Category:Intensive care medicine]] |
Latest revision as of 22:51, 29 July 2020
Myocarditis Microchapters |
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Treatment |
Case Studies |
Myocarditis MRI On the Web |
American Roentgen Ray Society Images of Myocarditis MRI |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Varun Kumar, M.B.B.S. Homa Najafi, M.D.[2]
Overview
Cardiac MRI is indicated in patients with new or persisting symptoms of chest pain and congestive heart failure, who have evidence of significant myocardial injury, in the absence of or in whom there is a low suspicion of coronary atherosclerosis. Cardiac MRI findings associated with myocarditis include myocardial inflammation, myocardial edema, capillary leak, and reduced left ventricular function. While the CMR pattern of gadolinium hyperenhancement in ST segment elevation myocardial infarction is transmural and extends from the endocardium to the epicardium, the patchy, non-segmental hyperenhancement pattern in myocarditis in contrast involves the epicardium and spares the subendocardium. CMR has a sensitivity of 76%, specificity of 95.5%, and overall diagnostic accuracy of 85% when any-two of the following three sequences are used, focal and global T2 signal intensity, myocardial global relative enhancement, and delayed gadolinium enhancement.
Findings on MRI
- Performance of cardiac MRI is generally indicated in those patients with new or persisting symptoms of chest pain and congestive heart failure, who have evidence of significant myocardial injury, in the absence of or in whom there is a low suspicion of coronary atherosclerosis.[1]
- Cardiac MRI may be helpful in the diagnosis of myocarditis. Findings on CMR suggestive of myocarditis include:[2][3][4][5][1][6]
- Myocardial inflammation: Myocardial inflammation associated with myocarditis appears as a high intensity signal with delayed gadolinium hyperenhancement on cardiac MRI (CMR). While the CMR pattern of gadolinium hyperenhancement in ST segment elevation myocardial infarction is transmural and extends from the endocardium to the epicardium, the patchy, non-segmental hyperenhancement pattern in myocarditis in contrast involves the epicardium and spares the subendocardium. The areas of hyperenhancement are often observed in the lateral and inferior territories of the heart. When used in conjunction with the findings on coronary angiography, CMR is useful in distinguishing between a diagnosis of myocarditis and myonecrosis associated with myocardial ischemia.
- Myocardial edema: High T2 signal intensity areas suggests myocardial edema.
- Myocardial scar: Gadolinium-enhanced magnetic resonance imaging (MRI) may also aid in assessing the extent of myocardial scarring (areas of delayed gadolinium enhancement) which is largely confined to the epicardium.
- Myocardial capillary leak: Myocardial early gadolinium enhancement ratio (ratio between myocardium and skeletal muscle) ≥ 4.0 is suggestive of hyperemia and capillary leakage.
- Myocardial dysfunction: Cardiac MRI can be used to assess for the presence of and severity of myocardial dysfunction associated with myocarditis.
- Associated pericardial effusion: Cardiac MRI can be used to assess for the presence of and severity of a pericardial effusion associated with myocarditis. The association of a pericardial effusion along with myocarditis is referred to as myopericarditis.
Sensitivity and Specificity
- CMR was reported to have a sensitivity of 76%, specificity of 95.5%, and overall diagnostic accuracy of 85% when any-two of the following three sequences were used:[2][7]
- Focal and global T2 signal intensity
- Myocardial global relative enhancement
- Delayed gadolinium enhancement
ACC/AHA Guidelines- ACCF/ACR/AHA/NASCI/SCMR 2010 Expert Consensus Document on Cardiovascular Magnetic Resonance: Indications to Perform Cardiac MRI in the Patient with Suspected Myocarditis[8] (DO NOT EDIT)
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CMR may be used for assessment of patients with LV dysfunction or hypertrophy or suspected forms of cardiac injury not related to ischemic heart disease. When the diagnosis is unclear, CMR may be considered to identify the etiology of cardiac dysfunction in patients presenting with heart failure, including
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References
- ↑ 1.0 1.1 Friedrich MG, Sechtem U, Schulz-Menger J, Holmvang G, Alakija P, Cooper LT; et al. (2009). "Cardiovascular magnetic resonance in myocarditis: A JACC White Paper". J Am Coll Cardiol. 53 (17): 1475–87. doi:10.1016/j.jacc.2009.02.007. PMC 2743893. PMID 19389557.
- ↑ 2.0 2.1 Abdel-Aty H, Boyé P, Zagrosek A, Wassmuth R, Kumar A, Messroghli D; et al. (2005). "Diagnostic performance of cardiovascular magnetic resonance in patients with suspected acute myocarditis: comparison of different approaches". J Am Coll Cardiol. 45 (11): 1815–22. doi:10.1016/j.jacc.2004.11.069. PMID 15936612. Unknown parameter
|http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=
ignored (help) - ↑ Skouri HN, Dec GW, Friedrich MG, Cooper LT (2006). "Noninvasive imaging in myocarditis". J. Am. Coll. Cardiol. 48 (10): 2085–93. doi:10.1016/j.jacc.2006.08.017. PMID 17112998.
- ↑ Monney PA, Sekhri N, Burchell T, Knight C, Davies C, Deaner A; et al. (2011). "Acute myocarditis presenting as acute coronary syndrome: role of early cardiac magnetic resonance in its diagnosis". Heart. 97 (16): 1312–8. doi:10.1136/hrt.2010.204818. PMID 21106555. Unknown parameter
|http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=
ignored (help) - ↑ Al-Mallah M, Kwong RY (2009). "Clinical application of cardiac CMR". Rev Cardiovasc Med. 10 (3): 134–41. PMID 19898290.
- ↑ Skouri HN, Dec GW, Friedrich MG, Cooper LT (2006). "Noninvasive imaging in myocarditis". J. Am. Coll. Cardiol. 48 (10): 2085–93. doi:10.1016/j.jacc.2006.08.017. PMID 17112998.
- ↑ Mahrholdt H, Goedecke C, Wagner A, Meinhardt G, Athanasiadis A, Vogelsberg H; et al. (2004). "Cardiovascular magnetic resonance assessment of human myocarditis: a comparison to histology and molecular pathology". Circulation. 109 (10): 1250–8. doi:10.1161/01.CIR.0000118493.13323.81. PMID 14993139.
- ↑ American College of Cardiology Foundation Task Force on Expert Consensus Documents. Hundley WG, Bluemke DA, Finn JP, Flamm SD, Fogel MA; et al. (2010). "ACCF/ACR/AHA/NASCI/SCMR 2010 expert consensus document on cardiovascular magnetic resonance: a report of the American College of Cardiology Foundation Task Force on Expert Consensus Documents". Circulation. 121 (22): 2462–508. doi:10.1161/CIR.0b013e3181d44a8f. PMC 3034132. PMID 20479157.