Radiation Oncology/Radiobiology/Radiosensitivity


 * Radiosensitivity is the relative susceptibility of cells, tissues, organs, organisms, or other substances to the injurious action of radiation
 * In general, it has been found that cell radiosensitivity is directly proportional to the rate of cell division and inversely proportional to the degree of cell differentiation
 * The most radio-sensitive cells:
 * High division rate
 * High metabolic rate
 * Non-specialized type
 * Well nourished


 * Casarett classification:
 * Group I
 * Group II
 * Group III
 * Group IV


 * Michalowski classification (PMID: 7127027):
 * H-type (hierarchical): like hemopoietic tissues
 * F-type (flexible): like liver parenchyma