無症状の個体におけるガドリニウム増強後の変化: 拡張性心筋病との比較
Seoyeon Park1, Soo Jin Cho2, Sung Mok Kim3,4
1School of Medicine, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon-si 16419, Republic of Korea.
Journal of cardiovascular development and disease
|August 27, 2025
まとめ
末期ガドリニウム増強 (LGE) の1種であるセプト線条は,無症状の個体において一般的です. LGEの範囲と厚さは,無症状患者と拡張性心筋病 (DCM) の患者によって異なるが,正常なLGEは病気と間違ってはならない.
科学分野:
- 心臓病科
- 放射線科
- 医療用イメージング
背景:
- 遅いガドリニウム増強 (LGE) は,無症状の個体で隔膜のストライプとして現れます.
- これらの発見は,拡張性心筋病 (DCM) の患者で観察された異常なLGEを模倣することができます.
研究 の 目的:
- 無症状の個体におけるLGE変異の頻度と範囲を評価する.
- 症状のない患者とDCM患者のLGE特性を比較する.
主な方法:
- 273人の無症状患者と100人のDCM患者の心臓MRIスキャンを遡って分析した.
- LGEは,心筋信号の強度が正常値より5標準偏差を超えていると定義される.
- 右心室挿入点 (RVIP) と中心室隔膜のLGE評価
主要な成果:
- LGEは,無症状患者の99. 3%とDCM患者の100%で観察されました.
- LGE (5. 5 対 7. 6) とLGEの厚さ (中部セプト: 4.5 mm 対 5. 7 mm;RVIPs: 6. 1 ~ 6. 4 mm 対 8. 7 ~ 8. 6 mm) のグループ間での有意な差異 (p < 0. 001).
- 異なる特徴にもかかわらず,LGEのパターンはかなり重なり合っていた.
結論:
- Septal ストライプは,無症状の個体ではよく見られ,DCMと比較して異なる LGE 特徴を示します.
- 正常なLGEの発見は,心筋疾患の評価において病理的であると誤って解釈されるべきではありません.
さらに関連する動画
関連する概念動画
Cardiomyopathy II: Dilated Cardiomyopathy
21
Dilated cardiomyopathy, or DCM, is a progressive myocardial disorder characterized by ventricular chamber dilation and contractile dysfunction.EtiologyVarious factors can cause DCM, including hypertension and heavy alcohol intake, which contribute to the weakening and enlargement of the heart muscle. Viral infections, such as Coxsackievirus B, adenoviruses, and influenza, can lead to DCM by causing inflammation and damage to heart tissue. Certain chemotherapeutic agents, including daunorubicin,...
21
Cardiomyopathy III: Hypertrophic Cardiomyopathy
45
Hypertrophic cardiomyopathy, or HCM, is an autosomal dominant genetic disorder characterized by asymmetric left ventricular hypertrophy without ventricular dilation. It is more common in men and is typically diagnosed in young, athletic adults.EtiologyHCM is primarily genetic and is caused by mutations in genes encoding sarcomeric proteins. Researchers have identified over 1400 mutations across at least 11 different genes. Among these, the most frequently occurring mutations are found in the...
45
Aortic Regurgitation II: Clinical Features and Diagnostic Tests
52
Aortic valve regurgitation (AR) occurs when the aortic valve fails to close properly, allowing blood to flow backward from the aorta into the left ventricle. This backflow can result in two distinct clinical presentations: acute and chronic AR, each characterized by its own set of symptoms and physical findings.Acute Aortic RegurgitationAcute AR presents with a sudden onset of severe symptoms. Patients typically experience profound dyspnea (shortness of breath), chest pain, and signs of left...
52
Mitral Stenosis II: Clinical features and Diagnostic Tests
37
Mitral stenosis is a heart condition in which the mitral valve, which allows blood to flow from the left atrium to the left ventricle, becomes narrowed or stenotic. This narrowing hinders blood flow and leads to clinical symptoms requiring specific medical evaluations and management strategies. The following overview outlines the clinical symptoms, assessments, diagnostic findings, prevention methods, and treatments for mitral stenosis.Clinical ManifestationsDyspnea (shortness of breath): This...
37
Cardiomyopathy I: Introduction and Classification
50
Cardiomyopathy, or CMP, is a group of diseases affecting the myocardial structure, impairing its ability to pump blood effectively. This condition can lead to arrhythmias, heart failure, or sudden cardiac death.Cardiomyopathies are classified into primary and secondary categories:Primary Cardiomyopathy refers to conditions involving only the heart muscle that are often idiopathic (of unknown cause) or genetic. They primarily affect the myocardium without the involvement of other systemic...
50


