…Complete Imaging Protocol). Nevertheless, there are obvious benefits of performing emergency bedside examinations, regardless of image quality. The ultrasound transducer is held at the tip…

…targeted examination. The patient's description of the quality of the dizziness — rotatory vertigo, unsteadiness or faintness — discriminates poorly between dangerous and benign causes. Ask…

…principle of ultrasound imaging and echocardiography. Piezoelectric crystals The ultrasound waves are generated by ceramic crystals exhibiting piezoelectric properties (i.e piezoelectric crystals ). Thousands of…

…of the discomfort. Location and radiation. Onset and temporal pattern. Duration and recurrence. Provoking and relieving factors. Associated symptoms. Similarity to previous documented angina or…

…Atrial fibrillation and ventricular arrhythmias were observed in the fifth decade of life in several family members. Imaging studies did not reveal structural cardiac abnormalities…

…imaging Radiotracers are designed to identify ischemic areas of the myocardium by highlighting regions with reduced blood flow. Radiotracers for SPECT Technetium 99m (Sestamibi or…

…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…

…one of the following: Symptoms of myocardial ischaemia. New ischaemic ECG changes. New pathological Q waves. Imaging evidence of new loss of viable myocardium or…

…that the total energy of an isolated system remains constant over time; energy can neither be created nor destroyed, it can only be transformed or…

…obtained in each window. Some parameters, e.g left ventricular diameter, are evaluated in several views in order to assess the reliability and reproducibility of…

…ultrasound imaging: The ultrasound image displays non existing structures. The ultrasound image does not display existing structures. The ultrasound image misrepresents the echogenicity of structures…

…imaging, or fractional flow reserve derived from computed tomography can refine interpretation. Coronary plaque and future events Angiographic stenosis severity is an imperfect predictor of…

…The ischemic cascade describes the sequence of events during myocardial ischemia, beginning with perfusion abnormalities and ultimately leading to chest pain (angina). Myocardial perfusion imaging…

…dysfunctional myocardium or myocardium supplied by a diseased vessel, is viable and could benefit from revascularization. Evaluating the success of revascularization : Myocardial perfusion imaging can…

…imaging, where defects are more pronounced during stress. RR is characterized by normal or near normal perfusion observed during stress, followed by the appearance of…

…to a delayed equalization of the pressure gradient. Conversely, the deceleration time is shortened if left ventricular compliance is reduced, or if left atrial pressure…

…thrombotic occlusion of a coronary artery with myocardial necrosis. Although early clinical descriptions emerged at the dawn of the 20th century, widespread acceptance was delayed…

…dissection. Coronary embolism of cardiac or non cardiac origin. Oxygen supply–demand mismatch, including demand related events in the presence of fixed coronary disease. More…

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

…making arrhythmology a field of intense research activity. This is partly due to the rise of cardiac imaging and invasive electrophysiological methods which allow for…

…required because blood causes strong backscatter of the light signal. Imaging is therefore typically performed during contrast injection or another method of temporary blood displacement…

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

…particularly PDE3 and PDE5, which break down cAMP and cGMP. It also inhibits the cellular reuptake of adenosine into endothelial cells. Further, it inhibits adenosine…

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

…tissue. The distribution of retained tracer provides tomographic information about relative regional perfusion. Imaging is generally performed at rest and during exercise or pharmacological stress…

…up to 30% of patients with inferior infarction. The amplitude of Q waves may also diminish over time. Moreover, magnetic resonance imaging has suggested that…

…dedicated testing, or a qualitative assessment of CAC on a non gated chest CT, can modify the estimated likelihood of atherosclerotic obstructive CAD. CAC is…

…NOMI). This method focuses on the presence or absence of ACO, rather than rigid ECG thresholds, and incorporates advanced ECG interpretation, clinical context, imaging, biomarkers…

…Ultrasound imaging, including echocardiography, has become a standard tool for clinicians worldwide (Narula et al). This chapter discusses the principles of the standard echocardiographic examination…

…Imaging (coronary CT angiography, myocardial perfusion scintigraphy, stress echocardiography) has greater diagnostic accuracy. Contraindications Absolute: Acute coronary syndrome within 48 hours, or ongoing unstable angina…

…taken from the consensus documents of the American Society of Echocardiography (ASE) and the European Association of Cardiovascular Imaging (EACVI). Use the table of contents…

…help determine expected normal values based on body surface area (BSA), aiding in the diagnosis of aortic root dilation. Key Formulas BSA Calculation (Mosteller formula): [ …

…noted that imaging of the right ventricle requires an experienced echocardiographer. Three dimensional (3D) echocardiography should be considered in laboratories with expertise; 3D imaging is…

…DT) and/or magnetic resonance imaging (MRI). Anatomy of the pericardium The pericardium consists of a parietal layer and a visceral layer. The parietal layer…

…up of the cause or for imaging. 6. Document the starting time, the baseline plasma sodium, the target for the first few hours, and the…

…that CT must not be performed before lumbar puncture in suspected bacterial meningitis — not even with a reduced level of consciousness, focal neurological signs or…

…suggestive of TIA or stroke require neurological consultation and, when appropriate, neurovascular and brain imaging. Evaluation and Physical Examination Clinical history and examination are the…

…three fifths of the annular circumference. The posterior leaflet generally has two distinct indentations which divide it into three scallops, P1 (anterior or medial scallop…

…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)…

…and magnetic resonance imaging (cardiac MRI) are superior to the ECG in terms of sensitivity and specificity. Nevertheless, to detect hypertrophy/dilatation using the ECG…

…imaging, the blood count or contact with the patient's own clinic delay empirical antibiotics [1]. A practical target: give the first dose of broad…

…generally improves or disappears during diastole, distinguishing myocardial bridging from a fixed coronary stenosis. However, intravascular ultrasound has shown that delayed opening of the bridged…

…in the setting of suspected ischaemia or previous infarction Dyspnoea requires assessment of dynamic LV function, valve disease, pulmonary pressure, or haemodynamics Stress imaging is…

…decade, the landscape of VT management has undergone a profound paradigm shift. Driven by advanced electroanatomical mapping, high resolution cardiac magnetic resonance (CMR) imaging, and…

…aimed at clarifying the genesis of the mass. Transesophageal echocardiography (TEE), magnetic resonance imaging (MRI of the heart) and computed tomography (DT of the heart)…

…the initiation of an ACE inhibitor to prevent symptomatic hypotension. Diagnostics The source material does not cover specific diagnostic modalities such as ECG, imaging, or…

…a clinical syndrome defined by the combination of symptoms and/or signs of heart failure and a left ventricular ejection fraction (LVEF) of 41–49%…

…The cardiovascular burden of CKD extends beyond CAD to peripheral arterial disease, cerebrovascular disease, valvular heart disease, heart failure, atrial fibrillation, and other arrhythmias or…

…biomarkers, and no imaging evidence of RV dysfunction. Catastrophic or “supermassive” PE refers to refractory cardiogenic shock or the need for ongoing cardiopulmonary resuscitation. Mechanical…

…to assess the coronary lumen and plaque morphology. Pathophysiological and Imaging Basis CT generates cross sectional images from x ray attenuation measurements obtained at multiple…

…40%. Ongoing or newly recognized LV systolic dysfunction. A patient may also present because of complications of the underlying infarction or LV remodeling, including heart…

…notches are required in the S wave or R wave. Fragmented QRS complexes are indications of previous myocardial infarction. There are imaging studies demonstrating that…

…in contractile function, or the effectiveness of longitudinal, radial, and circumferential contraction. Thus, methods such as ejection fraction may provide easily obtained parameters, but fail…

…in the source recommendations as at least 10 mm per year or at least 5 mm over 6 months. Such growth may justify consideration of…

…healthy individuals. Exercise stress testing in the age of non invasive cardiovascular imaging Advances in computerized tomography (CT), cardiac magnetic resonance imaging (cMRI), and echocardiography…

…and involvement of the adventitia, requiring urgent imaging because of the risk of rupture. Type A IMH may cause: Aortic regurgitation Haemopericardium or pericardial effusion…

…with coronary anatomy and the feasibility of revascularization, determine the clinical significance of imaging findings. Historically, revascularization was considered capable of improving LV systolic function…

…to quantify the ratio of pulmonary blood flow (Qp) to systemic blood flow (Qs). This measurement is pivotal in diagnosing and managing congenital or acquired…

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

…requires intravascular imaging to demonstrate an intramural haematoma or double lumen Type 1 is reported in fewer than one third of cases in the pregnancy…