Please assess the completion status of the following clinical trial:

Trial Title: Dual-Energy CT on Plan Quality, Dose-delivery Accuracy, and Simulated Outcomes of Patients Treated With Proton or Photon Therapy

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:
Eligibility Criteria:~Inclusion Criteria:~* Diagnosis of histologically proven primary or metastatic cancer requiring thoracic radiation therapy OR radiation therapy to the head and neck or brain~* At least 18 years of age.~* Planning to undergo proton or photon beam radiation therapy as part of the clinical management of the diagnosed cancer.~* Able to understand and willing to sign an IRB-approved written informed consent document.~Exclusion Criteria:~* Implanted metallic objects in the region to be scanned excepting dental prostheses~* IV or oral contrast medium within 24 hours prior to DECT image acqusition~* Pregnant.

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

Study Arms:
- Dual-Energy CT scan (Type: EXPERIMENTAL): Patients enrolling in this study will undergo additional sequential DECT scan in addition to their routine SECT or DECT scan.

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