SPA

single-photon absorptiometry
単一光子吸収計. 骨密度測定診断器. 放射性同位元素を用いた放射線吸収計.
single-photon absorptiometry; a bone densitometer; radiation from a source ofiodine-125 is passed across the bone, and the signal is picked up on a scintillation counter on the other side; ref. DPA(dual-photon abso

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