将一定几何形状,按照规定的法则排列的放射性核素,直接植入人体的自然空腔,如官腔、阴道、直肠、食管等、或组织问,如头颈的某些部位、肺、乳腺、前列腺等,称为腔内放疗和组织间放疗,统称短距离治疗。这一治疗技术起源于本世纪初,即在居里夫人发现了放射性核索镭226以后,美欧一些国家的医生, A certain geometry, in accordance with the rules of the radionuclides arranged directly into the body’s natural cavity, such as the official cavity, vagina, rectum, esophagus, etc., or tissue asked, such as some parts of the head and neck, lung, breast, prostate Etc., known as intraluminal radiotherapy and interstitial radiotherapy, collectively referred to as short-distance treatment. This treatment technique originated in the beginning of this century, that is, after Marie Curie discovered the radioactive nuclear radium 226, doctors from some countries in the United States and Europe,