angiography

Reader's Digestには健康関係の記事が多いので医学用語も頻繁に出てきます。次ぎの文はその8月号の記事、AGE WELL TO SAVE YOUR EYESIGHTからです。
Symptoms include the blurring of vision and distortion. "We use a test called Fluorecein Angiography to diagnose this condition when we detect bleeding or swelling in the macula." explained Dr. Cheung.
"Angiography" と "macula" は知らない単語なので調べます。　まず "angiography" を辞書で見ます。
・Merriam-Webster's Online Dictionary: the radiographic visualization of the blood vessels after injection of a radiopaque substance
・Infoplease Dictionary: the radiographic visualization of the blood vessels after injection of a radiopaque substance
そして "an x-ray produced by angiography" は "angiogram" と言う事が分かりました。
次に "macula" を調べます。
・Vocabulary.com: a) a cooler darker spot appearing periodically on the sun's photosphere; associated with a strong magnetic field b) a small yellowish central area of the retina that is rich in cones and that mediates clear detailed vision c) a patch of skin that is discolored but not usually elevated; caused by various diseases
引用文の場合は b) の意味ですが、文脈によって a) や c) の意味にもなるのでついでに覚えておきたい。