This study is being done to study stent deformation on persons with de novo coronary lesions to determine how much deformation takes place and how often. The information gathered from the group that receives the Promus element stent will be compared to other groups that receive other contemporary drug eluting stents.

Inclusion Criteria:

• Patients, male or female, 18 years or older;
• Patients with de-novo coronary lesions and slated to receive a Promus Element stent;
• Patients who are slated to undergo IVUS after stent deployment during implantation procedure

Exclusion Criteria:

• Patients receiving more than one drug-eluting stent within the same lesion during implantation procedure;
• Patients with in-stent restenosis;
• Patients who had IVUS imaging attained with manual pullback.

Patients who are scheduled to receive a Promus Element stent implant, and have de novo coronary lesions.