Related Experiment Video
Updated: Aug 29, 2026

05:32
Retrospective Cardiac Gating with A Prototype Small-Animal X-ray Computed Tomograph
Published on: February 21, 2025
Impact of gating errors with electrocardiography gated myocardial perfusion SPECT
Tokuo Kasai1, E Gordon Depuey, Arshad Ali Shah
1Division of Nuclear Medicine, Department of Radiology, St Luke's-Roosevelt Hospital Center, Columbia University College of Physicians and Surgeons, New York NY, USA. tkkasai@jikei.ac.jp
Abstract
No abstract available in PubMed .
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Electrocardiogram
An electrocardiogram (ECG or EKG) is a critical diagnostic tool that records the electrical signals produced by the heart during each heartbeat. This recording is achieved through electrodes placed strategically on the arms, legs, and chest. The electrocardiograph amplifies these signals and produces 12 distinct tracings, offering a comprehensive understanding of the heart's electrical activity.
Three major waveforms are present in a typical ECG recording: the P wave, the QRS complex, and the T...
Three major waveforms are present in a typical ECG recording: the P wave, the QRS complex, and the T...
Cardiac Action Potential
Cardiac action potentials are essential for proper heart function, enabling the rhythmic contractions needed for adequate blood circulation. Nodal cells and Purkinje fibers, specialized for electrical conduction, generate these action potentials.
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Ionic Basis of Cardiac Action Potentials
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Ionic Basis of Cardiac Action Potentials