Tumor, Solid Clinical Trial
Official title:
Real-time Tumor Localization and Guidance for Radiotherapy Using Ultrasound (US) and Magnetic Resonance (MR)
Verified date | October 2023 |
Source | University of Wisconsin, Madison |
Contact | n/a |
Is FDA regulated | No |
Health authority | |
Study type | Observational |
The primary objective of this protocol is to evaluate the feasibility of acquiring simultaneous 4D ultrasound and 4D MRI scans. The imaging performance of the US and MRI scans will be characterized. The secondary objective of this study is to determine if several salient features identified in the US scan can be used to predict target motion identified in the MR scan.
Status | Terminated |
Enrollment | 30 |
Est. completion date | October 4, 2019 |
Est. primary completion date | October 4, 2019 |
Accepts healthy volunteers | Accepts Healthy Volunteers |
Gender | All |
Age group | 18 Years and older |
Eligibility | Inclusion Criteria (Healthy Volunteers): - Must be eighteen (18) years of age or older. - Must be able to provide informed consent. Inclusion Criteria (Patients): - Patients diagnosed with malignancies of the liver. Exclusion Criteria (All): - Under the age of eighteen (18) years. - BMI exceeds the size of the bore of the MRI scanner. - Unable or unwilling to provide informed consent. - Contraindications, as described in the volunteer consent form, to MR or US scanning such as but not limited to accidental or implanted ferrous metal and/or implanted devices whose function can be disturbed by the main magnetic field, gradient magnetic fields, or radiofrequency energy. - Women who are pregnant, suspect they might be pregnant or breastfeeding. |
Country | Name | City | State |
---|---|---|---|
United States | University of Wisconsin, Madison | Madison | Wisconsin |
Lead Sponsor | Collaborator |
---|---|
University of Wisconsin, Madison | National Cancer Institute (NCI), National Institutes of Health (NIH) |
United States,
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Feasibility testing | To conduct non-contrast agent MR and ultrasound scans in order to evaluate and demonstrate, on a continuing basis, the technical and clinical feasibility of new or modified features (the "Prototype") of a combined MRI and ultrasound system, and software. Prototype MRI and ultrasound systems are defined as components of the MRI system (software) and ultrasound system (hardware and software) that have been modified in some form. | 12 Months | |
Primary | MR/US Motion Management Platform | The goal of this trial is to assess the feasibility of implementing the system into clinical practice and to compare the dosimetric advantages of its use. In a retrospective analysis, the patients' standard treatment plan with international target volume (ITV) expansion will be directly compared with a second treatment plan using a smaller respiratory-gated margin (i.e., gross tumor volume (GTV)-only expanded for planning target volume (PTV) without ITV expansion). Normal tissue constraints will be specified and follow standard clinical constraints. The percent of liver volume receiving greater than 18 Gy will be used as a quantitative metric to assess the dosimetric impact of our platform. In addition, overall treatment time with the relative "beam on time" and duty cycle will also be compared. Additionally, the ultrasound acquisition during treatment will be used to assess intra- and interfraction changes in breathing patterns as the patients progress through treatment. | 12 Months | |
Secondary | Accuracy of image-guidance technique | The accuracy of our image-guidance technique will be done by showing that several salient features identified in the US scan can be used to predict/model target motion identified in the MR scan. In this context the target will be a large easily identifiable structure in the test subject (e.g. cyst, vessel). MRI and ultrasound images will be acquired simultaneously such that the motion of tissues or organs in the body can be effectively tracked as a function of respiratory state in the subject. In this manner, the ultrasound system will allow real-time tracking of salient features in the patient that are indicative of the respiratory state. | 12 Months | |
Secondary | Test/re-test | A secondary objective of this substudy is to evaluate the accuracy of probe re-position during subsequent treatment sessions (i.e. test/re-test) in cancer patient subjects. The probe will be positioned during one of the patient subjects and images will be acquired. During a subsequent treatment session the probe will be re-positioned and images will be acquired. The image data will be used to evaluate to measure the concordance between the two datasets. | 12 Months |
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