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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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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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Studying Chronic Exposure of Mice to Ultraviolet B Radiation
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Chronic radiation enteritis.

C Chater1, A Saudemont1, P Zerbib1

  • 1Service de chirurgie digestive et Transplantation, université Lille Nord de France, CHRU de Lille, 59000 Lille, France.

Journal of Visceral Surgery
|September 26, 2018
PubMed
Summary
This summary is machine-generated.

Radiation enteritis, a complication of radiation therapy, presents in acute and chronic forms. Chronic radiation enteritis requires surgical intervention for intestinal obstruction and malabsorption.

Keywords:
Chronic radiation enteritisRadiation enteritis

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Area of Science:

  • Gastroenterology
  • Oncology
  • Radiology

Background:

  • Radiation enteritis is an iatrogenic intestinal disease resulting from radiation therapy.
  • It manifests as acute or chronic forms, impacting patients undergoing cancer treatment.

Observation:

  • Acute symptoms include abdominal pain, appetite loss, and diarrhea, typically managed medically.
  • Chronic radiation enteritis develops months post-therapy, causing sub-obstruction or malabsorption.

Findings:

  • Surgical resection of affected digestive tract segments and ileocolonic anastomosis are treatments for chronic cases.
  • Diagnosis is confirmed via anatomopathology, revealing fibrous and arterial lesions in the intestines.

Implications:

  • Understanding the distinct phases of radiation enteritis is crucial for timely diagnosis and effective treatment.
  • Surgical management of chronic radiation enteritis aims to restore intestinal function and alleviate symptoms.