Ultra Low Dose CT for CACS and AC of SPECT

Usefulness of Ultra Low Dose Cardiac CT for Coronary Calcium Scoring and for Attenuation Correction of SPECT

The aim of the study is to compare the CACS obtained from standard dose CT to the CACS obtained from ultra-low-dose scans. Additionally, the usefulness of ultra-low-dose CT for AC of myocardial perfusion SPECT will be assessed.

Inclusion Criteria:

• Patients referred for myocardial perfusion SPECT
• Male and Female subjects ≥18 years of age,
• Written informed consent

Exclusion Criteria:

• Pregnancy or breast-feeding
• CACS of 0 after inclusion of 10 patients with CACS 0
• Stents or implanted cardiac devices (valves, pace makers, ICD)
• Coronary artery bypass grafts