Liver Tumors Clinical Trial
— THeR-IRMOfficial title:
Hepatic and Renal Thermography Using Magnetic Resonance Imaging
Several technological challenges exist to apply Magnetic Resonance guided High Intensity Focused Ultrasound (MRgHIFU) for treatment of liver or kidney in particular challenges related to the motion of these organs. This study tests a new software to improve thermometry accuracy in mobile organs in patients with liver or kidney tumors. In the same time, the trajectory of the target in 3D is analyzed.
Status | Terminated |
Enrollment | 15 |
Est. completion date | May 2011 |
Est. primary completion date | May 2011 |
Accepts healthy volunteers | No |
Gender | Both |
Age group | 18 Years and older |
Eligibility |
Inclusion Criteria: - Liver tumors treated or not : HCC, liver metastases of colorectal cancer, hepatocellular adenoma, focal and nodular hyperplasia, - Kidney tumors : carcinoma - more than 18 years old Exclusion Criteria: - Tumours of the liver dome - Deprived of their liberty by court - Pregnant woman - Contraindication to MRI examination - Contraindication to including gadolinium salts injection |
Allocation: Non-Randomized, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Basic Science
Country | Name | City | State |
---|---|---|---|
France | Service de radiologie - Hôpital PELLEGRIN - CHU de Bordeaux | Bordeaux | |
France | Service of medical Imaging St André Hospital - CHU de BORDEAUX | Bordeaux |
Lead Sponsor | Collaborator |
---|---|
University Hospital, Bordeaux |
France,
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Temperature standard deviation | To test the ability of this method to improve thermometry accuracy, temperature standard deviations will be studied. Indeed, temperature standard deviations reflect thermometry inaccuracy in absence of temperature variations. Temperature standard deviation in each pixel will be measured over a temporal window. Two regions of interest (ROI) determined by the operator will be considered: the first one in the tumor, the second one for the whole organ. | Duration of MRI specific sequence (15 min) | No |
Secondary | Characterization of tumor motion in 3D during respiratory cycles | To characterize tumor motion in the 3 dimensions during respiratory cycles : To study the ability of this approach to determinate the 3D trajectory of a target, motion projections on three orthogonal axes will be analyzed from the MRI two orthogonal slices. If the motion can be assimilated to a rectilinear displacement, there will be amplitude minimization after angular correction. |
Duration of MRI specific sequence (15 min) | No |
Secondary | Improve of MRgHIFU shooting ballistics: | we need to see all anatomical structures in the path of the HIFU cone. Depth of the tumour, number of ribs in the pathway, presence of sensitive organ in the pathway or in PTV vicinity will be recorded | Duration of MRI specific sequence (15 min) | No |
Secondary | HIFU platform improvements | To define what improvements are needed on the HIFU platform in order to enhance its therapeutical abilities (depth of treatment, power level…) Amount of transducer's elements masked by rib's shadow, calculation of power level required for treatment, required number of HIFU transducer elements to be turn-off will be calculated. | Duration of MRI specific sequence (15 min) | No |
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