Please assess the completion status of the following clinical trial:

Trial Title: Study of the Inhibition of [11C]R-rolipram Binding to Brain Phosphodiesterase - 4 (PDE-4) by HT-0712

Study Design Characteristics:
- Allocation: NON_RANDOMIZED
- Intervention Model: SINGLE_GROUP
- Observational Model: None
- Primary Purpose: BASIC_SCIENCE
- Time Perspective: None
- Masking: NONE
- Phase: PHASE1
- Number of Arms: 1.0

Eligibility Criteria:
Main Inclusion Criteria:~* Healthy, elderly, non-smoking men and post-menopausal women~* Ability to give informed consent~Main Exclusion Criteria:~* Current or history of uncontrolled hypertension, major depression, Parkinson's disease, stroke and diabetes.~* Physical or behavioral conditions that may alter brain function

- Gender: ALL
- Minimum Age: 55 Years
- Maximum Age: 80 Years
- Healthy Volunteers: t

Study Arms:
- HT-0712 (Type: EXPERIMENTAL): None

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