…gamma cameras to create tomographic images of the left ventricle. In PET (Positron Emission Tomography), radiotracers emit positrons. When a positron collides with an electron…

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

…photon emission computed tomography (SPECT) or positron emission tomography (PET) to assess myocardial perfusion and blood flow. These imaging modalities are highly sensitive and specific…

…of available methods includes echocardiography, cardiovascular magnetic resonance (CMR), cardiac computed tomography (CT), single photon emission computed tomography (SPECT), positron emission computed tomography (PET) and…

…recovery of ejection fraction, and survival has been challenged by randomized trials. Relationship between viability and LV recovery Observational studies and positron emission tomography (PET…

…direct instillation into the lung. No tube may be used before its position has been verified by an approved method, and auscultation is not such…

…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…

…non invasive ventilation. Inadequate ventilation with a rising pCO₂ and respiratory acidosis, or a markedly increased work of breathing with impending exhaustion. Threatened airway obstruction…

…LVEF) of 41–49%. It occupies an intermediate position between heart failure with reduced ejection fraction (HFrEF), defined by an LVEF ≤40%, and heart failure…

…tip, using the thumb and the forefinger, while remaining fingers stabilize the grip. The transducer tends to glide out of position due to the gel…