26 下列何種膽道攝影無需使用顯影劑？
(A) percutaneous transhepatic cholangiography
(B) endoscopic retrograde cholangiopancreatography
(C) postoperative cholangiography
(D) magnetic resonance cholangiopancreatography

下列何種膽道攝影無需使用顯影劑？考英文的...