On-Board Imaging (OBI)

What Is On-Board Imaging (OBI)?

On-Board Imaging (OBI) is a powerful imaging technology used to confirm that a patient’s setup for radiation therapy is aligned precisely with their treatment plan. Just before each session, a built-in CT scanner captures high-resolution images of the treatment area. These images allow the care team to make real-time adjustments to the patient’s position or to the linear accelerator settings—ensuring treatment is delivered with maximum accuracy.

Why It Matters

Without OBI, radiation oncologists often have to treat a broader area around the tumor to account for any internal movement. With OBI, we can focus treatment more narrowly, minimizing radiation to healthy tissue and reducing the likelihood of side effects.

Benefits of On-Board Imaging

• Real-Time Accuracy: Imaging is performed immediately before each treatment to ensure exact targeting of the tumor.
• Seamless Workflow: Since the imaging equipment is built into or placed near the radiation machine, patients remain in the same position for both imaging and treatment.
• Time-Efficient: OBI makes it faster and easier to position patients correctly, which can shorten appointment times and enhance comfort.

How It Enhances Your Treatment

Each day’s radiation session can be fine-tuned to reflect small changes in tumor size or positioning. With this level of detail, your radiation oncologist can deliver the most effective dose while preserving nearby organs and tissues.

Technology Backed by Expertise

At Salter Radiation Oncology, we pair technologies like on-board imaging with decades of hands-on experience. Dr. Susan Salter and our multidisciplinary team use OBI to personalize each treatment session to your anatomy—giving you confidence that your care is as accurate and thoughtful as possible.

If you have questions about on-board imaging or want to explore your treatment options, call our office at (205) 939-7884. No referral is required.