It is not rare for acute coronary syndrome(ACS)patients to present with symptoms that are atypical,rather than chest pain.It is sometimes difficult to achieve a definitive diagnosis of ACS for such patients who presen...It is not rare for acute coronary syndrome(ACS)patients to present with symptoms that are atypical,rather than chest pain.It is sometimes difficult to achieve a definitive diagnosis of ACS for such patients who present with atypical symptoms,normal initial biomarkers of myocardial necrosis,and normal or nondiagnostic electrocardiograms(ECGs).Although cardiac CT allows for assessments of coronary artery stenosis as well as myocardial perfusion defect in patients with suspected ACS,it requires ECG gating and is usually performed with high-performance multislice CT for highly probable ACS patients.However,several recent reports have stated that ACS is detectable by myocardial perfusion defects even on routine non-ECG-gated contrast-enhanced CT.A growing number of contrast-enhanced CT scans are now being performed in emergency departments in search of pathologies responsible for a patient’s presenting symptoms.In order to avoid inappropriate management for this life-threatening event,clinicians should be aware that myocardial perfusion defect is more commonly detectable even on routine non-ECG-gated contrast-enhanced CT performed in search of other pathologies.展开更多
Cardioembolic stroke is a potentially devastating condition and tends to have a poor prognosis compared with other ischemic stroke subtypes.Therefore,it is important for proper therapeutic management to identify a car...Cardioembolic stroke is a potentially devastating condition and tends to have a poor prognosis compared with other ischemic stroke subtypes.Therefore,it is important for proper therapeutic management to identify a cardiac source of embolism in stroke patients.Cardiac computed tomography(CCT)can detect the detailed visualization of various cardiac pathologies in the cardiac chambers,interatrial and interventricular septum,valves,and myocardium with few motion artifacts and few dead angles.Multiphase reconstruction images of the entire cardiac cycle make it possible to demonstrate cardiac structures in a dynamic manner.Consequently,CCT has the ability to provide high-quality information about causal heart disease in cardioembolic stroke.In addition,CCT can simultaneously evaluate obstructive coronary artery disease,which may be helpful in surgical planning in patients who need urgent surgery,such as cardiac tumors or infective endocarditis.This review will introduce the potential clinical applications of CCT in an ischemic stroke population,with a focus on diagnosing cardioembolic sources using CCT.展开更多
文摘It is not rare for acute coronary syndrome(ACS)patients to present with symptoms that are atypical,rather than chest pain.It is sometimes difficult to achieve a definitive diagnosis of ACS for such patients who present with atypical symptoms,normal initial biomarkers of myocardial necrosis,and normal or nondiagnostic electrocardiograms(ECGs).Although cardiac CT allows for assessments of coronary artery stenosis as well as myocardial perfusion defect in patients with suspected ACS,it requires ECG gating and is usually performed with high-performance multislice CT for highly probable ACS patients.However,several recent reports have stated that ACS is detectable by myocardial perfusion defects even on routine non-ECG-gated contrast-enhanced CT.A growing number of contrast-enhanced CT scans are now being performed in emergency departments in search of pathologies responsible for a patient’s presenting symptoms.In order to avoid inappropriate management for this life-threatening event,clinicians should be aware that myocardial perfusion defect is more commonly detectable even on routine non-ECG-gated contrast-enhanced CT performed in search of other pathologies.
文摘Cardioembolic stroke is a potentially devastating condition and tends to have a poor prognosis compared with other ischemic stroke subtypes.Therefore,it is important for proper therapeutic management to identify a cardiac source of embolism in stroke patients.Cardiac computed tomography(CCT)can detect the detailed visualization of various cardiac pathologies in the cardiac chambers,interatrial and interventricular septum,valves,and myocardium with few motion artifacts and few dead angles.Multiphase reconstruction images of the entire cardiac cycle make it possible to demonstrate cardiac structures in a dynamic manner.Consequently,CCT has the ability to provide high-quality information about causal heart disease in cardioembolic stroke.In addition,CCT can simultaneously evaluate obstructive coronary artery disease,which may be helpful in surgical planning in patients who need urgent surgery,such as cardiac tumors or infective endocarditis.This review will introduce the potential clinical applications of CCT in an ischemic stroke population,with a focus on diagnosing cardioembolic sources using CCT.
