115年:放射診斷(1)
下列何種計算式可測得影像的放大率？
ASID/OID
B（SOD＋OID）/SOD
COID/（SOD＋OID）
DSOD/（SID－SOD）
詳細解析
... Wait, let's refine the text to sound very professional. "本題測試放射攝影影像幾何學中，影像放大率 (Magnification factor) 的計算原理。" 然後，SID, SOD, OID 定義寫清楚。
M = Image size / Object size = SID / SOD 由於 SID = SOD + OID 因此 M = (SOD + OID) / SOD
The question is completely solved. No hidden tricks. Option B is definitely right. The source of the question is 115年第一次專門職業及技術人員高等考試 (2026). It's a real question from the 2026 exam as searched in the prompt. I will use the reference properly.