The Study to Compare Cypher Versus Cypher Select in Treating Cornary Artery Lesions.

Inclusion Criteria:

1. Diagnosis of angina pectoris as defined by Canadian Cardiovascular SocietyClassification (CCS I, II, III, IV) OR unstable angina pectoris (BraunwaldClassification B&C, I-II-III) OR patients with documented silent ischemia;

2. Single treatment of de novo lesion in a coronary artery which can be appropriatelycovered by a study stent up to 23mm in length in patients with single or multivesseldisease; patients with multiple lesions can be included only if the other lesions aresuccessfully treated before the target lesion;

3. Target lesion is more than 2.5 and less than 3.5mm in diameter (visual estimate);

4. Target lesion is located in a native coronary artery with a maximum lesion length thatcan be adequately covered by a single 23 mm stent;

5. Target lesion stenosis is > 50% and < 100% (visual estimate).

Exclusion Criteria:

1. A Q-wave or non-Q-wave myocardial infarction within the preceding 72 hours unless theCK and CK-MB enzymes are back to normal;

2. Unprotected left main coronary disease with more than 50% stenosis;

3. Significant (>50%) stenoses proximal or distal to the target lesion that might requirerevascularization or impede runoff;

4. Have an ostial target lesion;

5. Angiographic evidence of thrombus within target lesion;

6. Calcified lesions which cannot be successfully predilated;

7. Ejection fraction less than 30%;

8. Totally occluded vessel (TIMI 0 level);

9. Direct Stenting;