Evaluation of Novel Cone-Beam CT for Guidance & Adaptation of Precision

Status Completed

Clinical Trial Summary

This is a feasibility study investigating the image quality of a new, high-performance cone beam CT (CBCT) used for on-couch imaging during radiotherapy treatments.

Clinical Trial Description

This study focuses on potential benefits of a high performance cone beam CT (CBCT) image guidance system for improved precision in the delivery of radiotherapy. CBCT is currently used during radiation therapy to align the patient to their original treatment plan to increase the precision of radiation delivery. Current CBCT imaging technology requires approximately a minute to acquire an image. In order to acquire images with sufficient quality to allow accurate targeting, the patient may need to perform multiple breath hold maneuvers to "freeze" the motion of tumors that move with the breathing cycle (e.g. lung, liver, and breast tumors). The new high-performance CBCT can acquire an image in approximately 6 seconds, potentially enabling acquisition of images with a single breath hold. Improved motion compensation algorithms used in image reconstruction may allow acquisition of good quality images even while a patient is not holding their breath. The methodology for the subject's treatment setup, CT simulation, treatment planning, image guidance and treatment delivery will be determined by the subject's treatment team and is not specified by this study. Enrollment in the study may occur after treatment delivery has started but must be prior to the fifth fraction. Following completion of informed consent to participate in this study, high-performance CBCT imaging will be scheduled immediately before or after one of the subject's first five scheduled radiation treatment fractions. Two research CBCT images will be acquired, one with breath hold, the other with free breathing. With minimal disruption for participating patients, this study will enable a comparison of (i) the subject's treatment planning fan-beam CT and (ii) the conventional CBCT acquired on an existing treatment unit with (iii) the high-performance CBCT. Image quality of the high performance CBCT image data will thereby be compared to both a best-case standard (fan-beam) and the status-quo for on-couch imaging to isolate and identify improvements. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details

NCT number	NCT05176860
Study type	Interventional
Source	Varian, a Siemens Healthineers Company
Contact
Status	Completed
Phase	N/A
Start date	December 20, 2022
Completion date	July 30, 2023

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Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.

Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.

Evaluation of Novel Cone-Beam CT for Guidance and Adaptation of Precision Radiotherapy

Clinical Trial Summary

Clinical Trial Description

Study Design

Related Conditions & MeSH terms