- 《英文msh詞典》Techniques,Subtraction
- [入口詞] Techniques,Subtraction
- [主題詞] Subtraction Technique
- [英文釋義] Combination or superimposition of two images for demonstrating differences between them (e.g.,radiograph with contrast vs. one without,radionuclide images using different radionuclides,radiograph vs. radionuclide image) and in the preparation of audiovisual materials (e.g.,offsetting identical images,coloring of vessels in angiograms).
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