1. OCT guided interventional therapy for borderline lesion: comparison of OCT, IVUS and CAG Jin Qin-hua, Chen Yun-dai Cardiovascular Medical Center Chinese PLA General Hospital, Beijing, China CASE REPORT

2. male, 52y; male, 52y; chest pain with sweating, usually occurred in the early morning; chest pain with sweating, usually occurred in the early morning; Diagnosis: UA II B; Diagnosis: UA II B; Risk factor: Hypertention; Smoking (1 pack/day) Risk factor: Hypertention; Smoking (1 pack/day) UCG: EF 58%, hypokinesis inferior wall UCG: EF 58%, hypokinesis inferior wall

3. CAG 2010-4-16 CAG 2010-4-16

4. -- Mid LAD 43.44% stenosis; -- Mid LAD 43.44% stenosis; -- Mid RCA 44.47% stenosis; -- Mid RCA 44.47% stenosis; Diameter stenosis: 43.44% Diameter stenosis: 44.47 %

5. IVUS-LAD IVUS-LAD

7. Vascular stenosis=MLA/vascular reference area: 66%

8. RCA-IVUS RCA-IVUS

9. There exists some irregular soft mass of the surface of plaque. Thrombus?

10. Vascular stenosis=MLA/vascular reference area: 38.8%

11. Strategy intensified anti-thrombosis therapy? intensified anti-thrombosis therapy? interventional therapy? interventional therapy? further assessment of the RCA lesion? further assessment of the RCA lesion?

12. RCA-OCT RCA-OCT

13. 1 6 543 2 Lipid plaque, multi-point plaque ruptures, and thrombosis; MLA 3.74mm2;

14. RCA-stenting

16. Discussion It ’ s required to adequate lesion evaluation using different imaging modalities in the some selected patients. It ’ s required to adequate lesion evaluation using different imaging modalities in the some selected patients. -- the symptom couldn ’ t be explained by the CAG. -- when the image is indefinite OCT is very helpful in detecting the vulnerable plaque. OCT is very helpful in detecting the vulnerable plaque.