Penetrating might be easier than retrieving.
Saito
Shigeru
S
D017225:Atherectomy, Coronary / Q000009:adverse effects*; D006328:Cardiac Catheterization; D002404:Catheterization / Q000295:instrumentation*; D017023:Coronary Angiography; D003324:Coronary Artery Disease / Q000000981:diagnostic imaging / Q000628:therapy*; D006801:Humans; D007431:Intraoperative Complications / Q000000981:diagnostic imaging / Q000209:etiology / Q000628:therapy