RADIOSENSITIVITY OF TUMORS

RADIOSENSITIVITY OF TUMORS   Tumors, like their cell of origin, differ in their susceptibility to radiation injury. In general, a poorly differentiated tumor is more radiosensitive than a well differentiated one of the same type. 1-    Radio-sensitive tumours: Destructive dose of radiation_causes no significant damage in adjacent normal tissues. Examples Malignant lymphoma – Seminoma of testis […]

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RADIATION EFFECTS ON DIFFERENT TISSUES

RADIATION EFFECTS ON DIFFERENT TISSUES     Following a substantial dose of radiation, there is a latent interval of hours or days before histological evidence of tissue injury is seen. As already explained, the damage depends on: a- The dose b- Type of radiation c- The interval following exposure d- The tissue exposed. Skin A) […]

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IONISING RADIATIONS

Posted by DAM on February 3, 2012 in IONISING RADIATIONS | Short Link
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IONISING RADIATIONS     Types of ionizing radiation: Electromagnetic radiation: X-rays and Gamma rays. Particulate radiation: alpha particles – beta particles – protons – electrons and neutrons. – All of these radiations can be administered to animals and human beings: Externally or Internally. External sources include X-ray machines, electron accelerators. Internal irradiation arises from the […]

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