apexcardiogram (medicine) and subtraction technique (medicine)

apexcardiogram (medicine)

apexcardiogram
Graphic recording of the movements of the chest wall produced by the apex beat of the heart.

subtraction technique (medicine)

subtraction technique
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, colouring of vessels in angiograms).

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