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Related Concept Videos

Biological Effects of Radiation02:59

Biological Effects of Radiation

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All radioactive nuclides emit high-energy particles or electromagnetic waves. When this radiation encounters living cells, it can cause heating, break chemical bonds, or ionize molecules. The most serious biological damage results when these radioactive emissions fragment or ionize molecules. For example, α and β particles emitted from nuclear decay reactions possess much higher energies than ordinary chemical bond energies. When these particles strike and penetrate matter, they...
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Pilot and Numeric Relaying01:21

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Pilot relaying is a type of differential protection used in power systems. It compares electrical quantities at the terminals of equipment via a communication channel instead of direct relay interconnection. This method is essential for transmission lines where the terminals are far apart, typically up to 80 km for lines with 69 to 115 kV ratings. Four types of communication channels are used for pilot relaying:
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Radiation: Applications01:17

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The average temperature of Earth is the subject of much current discussion. Earth is in radiative contact with both the Sun and dark space; it receives almost all its energy from the radiation of the Sun and reflects some of it into outer space. Dark space is very cold, about 3 K, so Earth radiates energy into it. For instance, heat transfer occurs from soil and grasses, the rate of which can be so rapid that frost can occur on clear summer evenings, even in warm latitudes.
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The German physicist Heinrich Hertz (1857–1894) was the first to generate and detect certain types of electromagnetic waves in the laboratory. Starting in 1887, he performed a series of experiments that confirmed the existence of electromagnetic waves and verified that they travel at the speed of light. Hertz used an alternating-current RLC (resistor-inductor-capacitor) circuit that resonated at a known frequency and connected it to a loop of wire. High voltages induced across the gap in...
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Radiation Pressure: Problem Solving01:09

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The radiation pressure applied by an electromagnetic wave on a perfectly absorbing surface equals the energy density of the wave. The wave's momentum also gets transferred to the surface when an electromagnetic wave is entirely absorbed by it. The rate at which momentum is transmitted to an absorbing surface perpendicular to the propagation direction equals the force on the surface.
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Dynamic Lung Tumor Tracking for Stereotactic Ablative Body Radiation Therapy
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Piloting E-Learning in a Radiation Oncology Department.

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E-learning effectively delivers radiation therapy education, meeting learning outcomes more efficiently than traditional face-to-face methods. This professional development approach enhances radiation therapist training.

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Area of Science:

  • Medical Physics
  • Radiologic Technology Education

Background:

  • Radiation therapy requires continuous professional development for quality patient care.
  • E-learning offers a potential alternative to traditional in-person training methods.

Purpose of the Study:

  • To compare the effectiveness of e-learning versus face-to-face instruction for radiation therapy education.
  • To evaluate learning outcomes and efficiency in professional development programs.

Main Methods:

  • A pilot study compared two cohorts of radiation therapy educators (RTEs) undergoing professional development year (PDY).
  • One cohort received department orientation and treatment planning introduction via traditional face-to-face methods.
  • The subsequent cohort received the same programs through an e-learning platform.

Main Results:

  • E-learning delivered the same educational content as face-to-face instruction.
  • The e-learning format proved more efficient in content delivery.
  • Learning outcomes were comparable between the two educational methods.

Conclusions:

  • E-learning is a viable and efficient method for radiation therapy in-service education.
  • The study suggests e-learning can maintain educational quality while improving efficiency.
  • Further research with larger sample sizes is warranted to confirm these findings.