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Related Concept Videos

NMR Spectrometers: Radiofrequency Pulses and Pulse Sequences01:17

NMR Spectrometers: Radiofrequency Pulses and Pulse Sequences

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A pulse is a short burst of radio waves distributed over a range of frequencies that simultaneously excites all the nuclei in the sample. Upon passing a radio frequency pulse along the x-axis, the nuclei absorb energy corresponding to their Larmor frequencies and achieve resonance. This shifts the net magnetization vector from the z-axis toward the transverse plane. This angle of rotation of the magnetization vector, or the flip angle, is proportional to the duration and intensity of the pulse.
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Pulse01:05

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The pulse is one of the most fundamental physiological indicators of the body's cardiovascular health. It is the rhythmic expansion and contraction of the arterial walls in response to the pressure generated by the heart's pumping action.
Pulse Rate and its Significance
Pulse rate, often measured in beats per minute (bpm), reflects the heart rate (HR), which is influenced by numerous factors such as stress, physical activity, and hormonal changes. A normal resting adult pulse rate falls...
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Pulse01:16

Pulse

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When the heart pumps blood out, arterial elastic fibers play a crucial role in sustaining a high-pressure gradient. They expand to accommodate the received blood and then recoil - a process known as the pulse that can be either manually palpated or electronically quantified. Despite a reduction in its effect with increased distance from the heart, elements of the pulse's systolic and diastolic components persist, observable even at the arteriole level.
The pulse serves as a clinical...
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Magnetic Resonance Imaging01:24

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Magnetic resonance imaging (MRI) is a noninvasive medical imaging technique based on a phenomenon of nuclear physics discovered in the 1930s, in which matter exposed to magnetic fields and radio waves was found to emit radio signals. In 1970, a physician and researcher named Raymond Damadian noticed that malignant (cancerous) tissue gave off different signals than normal body tissue. He applied for a patent for the first MRI scanning device in clinical use by the early 1980s. The early MRI...
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Imaging Studies for Cardiovascular System IV: CMRI01:21

Imaging Studies for Cardiovascular System IV: CMRI

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Cardiovascular magnetic resonance imaging, or CMRI, is a non-invasive diagnostic test that employs a magnetic field and radiofrequency waves to create precise images of the heart and arteries. It provides comprehensive information about cardiac anatomy, function, perfusion, and tissue characterization without ionizing radiation.IndicationsCMRI diagnoses various heart conditions, including tissue damage from heart attacks, ischemic heart disease, myocarditis, aortic issues (tears, aneurysms,...
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Pulse amplitude and quality01:17

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Pulse amplitude is a crucial indicator of cardiac health because it provides valuable insights into the strength of left ventricular contractions and the overall uniformity of blood circulation within the vasculature. The strength of the pulse is directly related to the force with which the heart contracts and the volume of blood being pumped.
A weak or absent pulse may indicate reduced cardiac output or poor left ventricular contraction, which can be signs of cardiovascular dysfunction or...
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Cardiac Magnetic Resonance Imaging at 7 Tesla
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Simplifying cardiovascular magnetic resonance pulse sequence terminology.

Matthias G Friedrich1, Chiara Bucciarelli-Ducci, James A White

  • 1Philippa and Marvin Carsley Cardiovascular MR Centre at the Montreal Heart Institute, Université de Montreal, Montreal, Canada. mgwfriedrich@gmail.com.

Journal of Cardiovascular Magnetic Resonance : Official Journal of the Society for Cardiovascular Magnetic Resonance
|January 1, 2015
PubMed
Summary

A new set of simplified terms is proposed for Cardiovascular Magnetic Resonance (CMR) pulse sequences to improve clarity in clinical reports and research. This standardization enhances communication between physicians and researchers, ultimately benefiting patient care and scientific understanding.

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Area of Science:

  • Cardiovascular Magnetic Resonance (CMR) imaging
  • Medical reporting standards
  • Biomedical engineering

Background:

  • Current Cardiovascular Magnetic Resonance (CMR) reports often use overly technical jargon, hindering clear communication.
  • A lack of standardized terminology for CMR pulse sequences complicates interpretation for referring physicians and non-expert researchers.
  • Existing methods for describing CMR techniques lack consistency across clinical reports, scientific articles, and guidelines.

Discussion:

  • Proposes a simplified terminology for applied Cardiovascular Magnetic Resonance (CMR) pulse sequence techniques.
  • Recommends describing techniques based on their purpose in clinical reports.
  • Advocates for detailed technical descriptions in scientific publications following the purpose-based summary.

Key Insights:

  • Standardized CMR terminology enhances clarity in clinical reports and scientific articles.
  • Improved communication between physicians and CMR readers facilitates better patient care.
  • Facilitates understanding of CMR methodology and clinical relevance for a broader audience in research.

Outlook:

  • Wider adoption of unified CMR terminology can streamline medical reporting.
  • Potential to improve the consistency and accuracy of CMR research publications.
  • Aims to establish a common language for Cardiovascular Magnetic Resonance (CMR) across different medical and research fields.