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Voluntary Breath-hold Technique for Reducing Heart Dose in Left Breast Radiotherapy
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Absorbed doses on patients undergoing tomographic exams for pre-surgery planning of dental implants

M A F Zenóbio1, T A da Silva

  • 1Centro de Desenvolvimento da Tecnologia Nuclear, Comissão Nacional de Energia Nuclear, Caixa Postal 941, CEP 30123-970 Belo Horizonte, MG, Brazil.

Applied Radiation and Isotopes : Including Data, Instrumentation and Methods for Use in Agriculture, Industry and Medicine
|April 3, 2007
PubMed

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Imaging Studies I: CT and MRI

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Description of the Procedures
Computed Tomography (CT) scan:
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Computed Tomography01:10

Computed Tomography

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The technique was invented in the 1970s and is based on the principle that as X-rays pass through the body, they are absorbed or reflected at different levels. In the technique, a patient lies on a motorized platform while a computerized axial tomography (CAT) scanner rotates...
X-ray Imaging01:24

X-ray Imaging

German physicist Wilhelm Röntgen (1845–1923) was experimenting with electrical current when he discovered that a mysterious and invisible "ray" would pass through his flesh but leave an outline of his bones on a screen coated with a metal compound. In 1895, Röntgen made the first durable record of the internal parts of a living human: an "X-ray" image (as it came to be called) of his wife’s hand. Scientists worldwide quickly began their own experiments with X-rays, and by 1900, X-ray was widely...
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Imaging Studies III: Computed Tomography

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Radiological Investigation I: X-ray and CT

Radiological investigations, including X-rays and computed tomography (CT) scans, are critical for diagnosing and evaluating various medical conditions. These imaging techniques provide valuable insights into the body's internal structures, aiding in the detection of abnormalities, assessment of disease progression, and development of treatment strategies. This article delves into two primary radiological investigations, chest X-rays and CT scans, outlining their purpose, procedures, and the...
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Imaging Studies for Cardiovascular System V: CT

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