Myocardial ischemia and infarction Definition and Pathophysiology Intravascular imaging comprises catheter based techniques that directly visualize the coronary lumen, vessel wall, plaque, thrombus, and implanted…

Cardiology Myocardial ischemia and infarction Definition and Clinical Purpose Myocardial perfusion imaging (MPI) with single photon emission computed tomography (SPECT) or positron emission tomography (PET…

Echocardiography Ultrasound artifacts The following artifacts are common in ultrasound imaging: The ultrasound image displays non existing structures. The ultrasound image does not display existing…

…Quantification of blood flow using PET Quantitative PET perfusion imaging offers precise measurements of myocardial blood flow in milliliters per minute per gram of tissue…

…flow. These imaging modalities are highly sensitive and specific in evaluating perfusion and also play a role in determining the viability of compromised myocardial tissue…

…rocking and angling. Tilt : The transducer maintains the same axis orientation to the heart but moves to a different imaging plane. Rotate : The transducer maintains…

Echocardiography Tissue Doppler (Tissue Velocity Imaging) Previous chapters on Doppler imaging have all focused on measurements of blood flow. However, the Doppler effect can also…

…CAD. Risk stratification : Myocardial perfusion imaging is valuable for assessing the risk of future cardiac events in patients with known CAD or after myocardial infarction…

…and cardiac imaging Cardiovascular imaging modalities have developed rapidly in the past few decades. The repertoire of available methods includes echocardiography, cardiovascular magnetic resonance (CMR…

…medications such as nitrates, beta blockers, or calcium channel blockers Recent acute myocardial infarction (AMI) Pharmacologic agents in perfusion imaging Vasodilators (adenosine, dipyridamole, regadenoson) These…

…ischemia and infarction Definition and Pathophysiology Stress echocardiography is a functional cardiac imaging technique used primarily to identify inducible myocardial ischaemia and to estimate prognosis…

…a lumbar puncture is rarely the needle itself. It is the decision whether to perform it now or after imaging, how the patient is positioned…

…of Native Valvular Regurgitation. A Report from the American Society of Echocardiography Developed in Collaboration with the Society for Cardiovascular Magnetic Resonance. In Journal of…

…Take cultures immediately, but never let sampling, imaging, the blood count or contact with the patient's own clinic delay empirical antibiotics [1]. A practical…

…Coronary angiography remains primarily an anatomical examination, whereas contemporary decision making increasingly combines anatomical imaging with functional assessment. A central practical principle is that the…

…infarction (MI) is a clinical diagnosis that integrates myocardial injury, evidence of acute myocardial ischaemia, electrocardiographic findings, cardiac biomarkers, imaging, angiography, and, occasionally, pathological examination…

…Image acquisition and evaluation Stress Imaging : Initially performed using exercise or pharmacologic agents to elevate myocardial oxygen demand (or simulate increased demand using vasodilatory agents…

…more powerful, equipped with an increasing number of methods to interrogate organ structure and function. Ultrasound imaging, including echocardiography, has become a standard tool for…

…during myocardial ischemia, beginning with perfusion abnormalities and ultimately leading to chest pain (angina). Myocardial perfusion imaging techniques, such as SPECT and PET, can detect…

…positive results are false positives; at a high probability a negative test adds little. Imaging (coronary CT angiography, myocardial perfusion scintigraphy, stress echocardiography) has greater…

…5. With severe symptoms: give hypertonic saline immediately. Do not wait for a complete work up of the cause or for imaging. 6. Document the…

…mm. Limitations Formulas assume normal body habitus Ethnic variations may require adjusted thresholds Always correlate with imaging measurements Not valid for pediatric patients <15 years

…symptomatic hypotension. Diagnostics The source material does not cover specific diagnostic modalities such as ECG, imaging, or electrophysiology in relation to ACE inhibitor therapy. Biomarkers…

…to rupture of the vasa vasorum, although improved imaging demonstrates small intimal disruptions in approximately 20%–60% of cases. These disruptions may initiate or complicate…

…10% of cases. Intermediate high risk PE occurs in haemodynamically stable patients with both RV dysfunction on imaging and elevated cardiac biomarkers. Intermediate low risk…

…5% of otherwise normal angiograms demonstrate bridging. The wide range reflects differences in ascertainment and imaging technique. Coronary fistulae represent abnormal communications between a coronary…

…coronary calcification. CAC therefore functions primarily as an imaging biomarker of coronary atherosclerotic burden rather than as a direct measure of luminal obstruction. Calcified plaque…

…is not flow limiting. CCTA should be distinguished from coronary artery calcium (CAC) scoring. CAC imaging is a rapid, non contrast, low radiation CT examination…

…obstructive coronary artery disease (CAD), because coronary computed tomography angiography (CCTA) and functional imaging have higher diagnostic performance. Its most consistent contemporary role is therefore…

…persistently mildly reduced systolic function. This dynamic nature makes prior imaging particularly important when interpreting a current LVEF of 41–49%. Diagnostic phenotype Criterion HFmrEF…

…the intima. Intramural haematoma differs from classic dissection because haemorrhage occurs within the media without imaging evidence of an intimal tear or flap. AAS is…

…viable and nonviable myocardium, together with coronary anatomy and the feasibility of revascularization, determine the clinical significance of imaging findings. Historically, revascularization was considered capable…

…Visualization on multiple imaging planes. Location adjacent to hyperkinetic myocardium. Large thrombus burden. Cardiac magnetic resonance (CMR) can further characterize thrombus morphology and may assist…

…with myocardial ischaemia New ischaemic ECG changes Development of pathological Q waves Imaging evidence of new loss of viable myocardium or a new regional wall…

…the concept has important limitations. Although thin capped fibroatheromas may have imaging characteristics associated with rupture, fewer than 5% of such lesions caused a clinical…

…rather than rigid ECG thresholds, and incorporates advanced ECG interpretation, clinical context, imaging, biomarkers, and angiographic findings. OMI is defined by acute coronary artery occlusion…

…The American Society for Echocardiography (ASE) and the European Association of Cardiovascular Imaging (EACVI) stress that the following parameters are of particular importance for the…

…ECG is a useful tool for detecting hypertrophy/dilatation but echocardiography and magnetic resonance imaging (cardiac MRI) are superior to the ECG in terms of…

…Moreover, magnetic resonance imaging has suggested that pathological Q waves may also arise due to extensive subendocardial infarction (NSTEMI). If pathological Q waves occur as…

…non invasive cardiovascular imaging Advances in computerized tomography (CT), cardiac magnetic resonance imaging (cMRI), and echocardiography have enabled detailed functional and anatomical imaging of cardiac…

…other radiological examinations are most often required, in particular computed tomography (DT) and/or magnetic resonance imaging (MRI). Anatomy of the pericardium The pericardium consists…

…and density (D) of the liquid: Formula 2 : K = 0.5 • D blood • v 2 With regards to echocardiography and ultrasound imaging in general…

…the principle of ultrasound imaging is simple: sound waves are sent into the tissue and the reflected waves are used to create an image of…

…undergone a profound paradigm shift. Driven by advanced electroanatomical mapping, high resolution cardiac magnetic resonance (CMR) imaging, and landmark clinical trials, the field has transitioned…

…10. In unknown time of onset, wake up stroke or a late time window: perform advanced imaging according to the local protocol. 11. Document weight…

…hearing, cardiac examination, ECG, selective vascular imaging Traumatic or toxic syndrome Onset after trauma, a change in medication or an exposure Concussion, temporal bone injury…

…gain valuable insights into shunt severity and directionality. While the technique requires meticulous attention to imaging standards, its non invasive nature and reproducibility make it…

…risk categories. A significant shortcoming of the HCM Risk SCD Score is the absence of magnetic resonance imaging parameters (extent of myocardial fibrosis). Risk stratification…

…in adults: an update from the American Society of Echocardiography and the European Association of Cardiovascular Imaging. In European heart journal cardiovascular Imaging 16 (3)…

…arrhythmias were observed in the fifth decade of life in several family members. Imaging studies did not reveal structural cardiac abnormalities, nor coronary artery disease…

…thresholds. Clinical Presentation and Symptoms Most AAAs are asymptomatic and are identified either during routine abdominal examination or incidentally on imaging performed for another indication…

…extending beyond the toes and, especially, any motor deficit indicate threatened viability and mandate emergency imaging and revascularisation. Severe sensory loss, profound anaesthesia and paralysis…

…neurological consultation and, when appropriate, neurovascular and brain imaging. Evaluation and Physical Examination Clinical history and examination are the initial components of assessment. The history…

…ECG abnormalities, and biomarker elevation; echocardiography and cardiac magnetic resonance imaging may demonstrate inflammatory involvement. Gastrointestinal and musculoskeletal disorders may mimic myocardial ischaemia, including severe…

…renal imaging Risk of progression rises with proteinuria and depends on cause 2 60 mL/min/1.73 m² Abnormal urinalysis or renal imaging Mild…

…diagnosis based on patient symptoms, ECG changes, highly sensitive biochemical markers, and information gleaned from various imaging techniques. For types 1, 2, and 3 MI…

…ratio of maximum hyperaemic coronary flow to resting coronary flow. It can be assessed invasively or with myocardial perfusion imaging using PET, SPECT or CMR…

…to both ISR and stent thrombosis. Optical coherence tomography (OCT) is currently the most suitable imaging modality for detecting neoatherosclerosis, although its resolution does not…

…thrombus, although haziness is not specific. Intravascular imaging can identify plaque disruption, thrombus and other structural features that may not be evident on angiography alone…

…magnetic resonance imaging has demonstrated procedural injury in patients undergoing either procedure, and postprocedural cTnI elevation correlates with evidence of injury on cardiac magnetic resonance…