Please assess the completion status of the following clinical trial:

Trial Title: Prone Breath Hold Technique to Decrease Cardiac and Pulmonary Doses in Women Receiving Left Breast Radiotherapy

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

Eligibility Criteria:
Inclusion Criteria:~* Patients of Dr. Gonzalez~* ≥18 years of age~* Node-negative left breast cancer~* Invasive or DCIS breast cancer~* Prior lumpectomy~* Deemed appropriate for treatment in the prone position by the treating physician~* Able to tolerate prone position and breath hold during CT simulation~Exclusion Criteria:~* \<18 years of age~* Patients requiring treatment in supine position

- Gender: FEMALE
- Minimum Age: 18 Years
- Maximum Age: None
- Healthy Volunteers: f

Study Arms:
- Verify radiation dose to heart and lung (Type: EXPERIMENTAL): Subjects will undergo the standard of care CT simulation, which includes an additional breath hold CT. Inspiratory gated breath-hold will be used. Two radiation plans will be generated: one for the CT scan performed free breathing, and one for the CT scan performed with inspiratory gated breath hold. The cardiac and lung doses will be determined. At the discretion of the treating physician, the plan with the lower cardiac and lung dose may be used to treat the patient.

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