シンチカメラの陰性腫瘍検出機序の研究 : 第1報検出能を阻害する因子の検討

概要

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Although the efficiencies of scintillation cameras have been remarkably improved recently, the detectability of radio-negative tumor images are still extremely poor, comparing with that of the radio-positive tumors, as far as the tumors are buried inside the large organs like liver. To search the causing factors of the differences between the two, we investigated the possible hindrance-factors of the demonstrability of the radio-negative tumor images, stressed upon the patient-factors. The obtained results are as follows : 1. The recognizability of this type of lesions was intimately related to the diameter of the target organs to which the radio-isotopes are specifically distributed. 2. The demonstrability was also strongly influenced by the location of the tumors, namely the depth of the tumors were considered to be a important factor. 3. The depth-resolution power of the collimator should little influences. 4. The densities of the radio-isotopes distributed to the target organs were not considered to be influencial.
公益社団法人日本放射線技術学会の論文
1975-03-31