Please assess the completion status of the following clinical trial:

Trial Title: CO2 as a Stress Agent for Perfusion Imaging

Study Design Characteristics:
- Allocation: None
- Intervention Model: SINGLE_GROUP
- Observational Model: None
- Primary Purpose: DIAGNOSTIC
- Time Perspective: None
- Masking: NONE
- Phase: None
- Number of Arms: 1.0

Eligibility Criteria:
Inclusion Criteria:~For all participants~* Age ≥ 18 years old~* BMI ≤ 40 kg/m2~* Able and willing to comply with the study procedures~* Written informed consent~* Participants with documented coronary artery disease~* Stable coronary artery disease on a stable medication regime.~* Healthy volunteers without known heart disease~* Low risk of coronary artery disease (CAD)~Exclusion Criteria:~* History or risk of severe bradycardia (heart rate \< 50 beats per minute) not related to chronotropic drugs~* Known second- or third-degree Atrio-ventricular block without pacemaker~* Atrial flutter or atrial fibrillation~* Dyspnea (NYHA III/IV), wheezing asthma or Chronic Obstructive Pulmonary Disease (COPD)~* Coronary artery bypass graft (CABG) surgery within 60 days prior to screening or at any time after consent~* Percutaneous coronary intervention (PCI) within 30 days prior to screening or at any time following consent~* Acute myocardial infarction or acute coronary syndrome within 60 days prior to screening or at any time following consent~* Recent use of dipyridamole, dipyridamole-containing medications (e.g. Aggrenox)~* Known hypersensitivity to adenosine~* Breastfeeding or pregnancy~* Claustrophobia or inability to lie still in a supine position~* Unwillingness or inability to provide informed consent

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: None
- Healthy Volunteers: t

Study Arms:
- Myocardial blood flow quantification (Type: OTHER): The RA-MR™ Virtual Sequential Gas Delivery System. : delivery of CO2 in increasing levels.~Rubidium Elution System: delivery of Rb-82 through an automated pump system for myocardial PET perfusion imaging.~Persantine stress myocardial PET perfusion imaging: as a standard for comparison.

Based on this trial design, predict the completion outcome and termination type (if applicable).