This is a multicenter, observational registry that follows patients for a total of 5 years from the date of the first liver ablation procedure with the NEUWAVE Microwave Ablation System.
This is a multicenter, observational registry that follows patients for a total of 5 years from the date of the first liver ablation procedure with the NEUWAVE Microwave Ablation System. The data gathered from participating sites will be available to be analyzed to develop ablation parameter guidance for ablation approaches under varying patient liver tissue conditions and liver lesions. This is an "umbrella registry," which was included as an optional component in other NEUWAVE studies; hence, data from consenting patients who are or will be enrolled in other NEUWAVE soft tissue liver lesion ablation studies will be included in this registry. All other patients will be enrolled and followed prospectively, enrolled retrospectively with prospective, longitudinal follow up, or enrolled retrospectively with all retrospective follow up. Enrollment for this study will include up to 1,500 patients throughout the world who underwent or are scheduled to undergo microwave ablation of one or more soft tissue liver lesions using the NEUWAVE Microwave Ablation System or the NEUWAVE Microwave Ablation System with Ablation Confirmation.
Study Type
OBSERVATIONAL
Enrollment
1,254
Patients who meet the eligibility criteria will undergo microwave ablation (MWA) with the NEUWAVE Microwave Ablation System with or without Ablation Confirmation of at least one soft-tissue liver lesion, in accordance with the study site's standard-of-care (SOC) practices.
Number of Patients Whose Ablation Resulted in Technical Success
Technical Success is defined as ablation of the target lesion(s) according to the protocol and covered completely, with an adequate margin (that is, the ablation zone completely overlaps or encompasses the target lesion(s) plus an ablative margin), as defined by the performing physician who will make the assessment using CT, MRI, PET, US, and/or X-ray, immediately following the procedure.
Time frame: Immediately post-ablation (Day 0)
Number of Patients Whose Ablation Resulted in Technique Efficacy
Technique efficacy is defined as ablation of the target lesion(s) according to the protocol and covered completely, with an adequate margin (that is, the ablation zone completely overlaps or encompasses the target lesion(s) plus an ablative margin), as defined by the performing physician who will make the assessment using CT, MRI, PET, US, and/or X-ray at Visit 3 (between 7 days and less than 3 months post-ablation).
Time frame: Between 7 days and less than 3 months post-ablation
Target Lesion Recurrence Rate
Target lesion recurrence (local recurrence) was evaluated at every visit after ablation of the target lesion(s) and assessed by CT, MRI, PET, US, and/or X-ray.
Time frame: Assessed at 6 months, 12 months, 18 months, 24 months, 30 months, 36 months, 42 months, 48 months, 54 months, and 60 months post-ablation.
Overall Survival
Overall survival was evaluated at every visit after ablation of the target lesion(s)
Time frame: Assessed at 6 months, 12 months, 18 months, 24 months, 30 months, 36 months, 42 months, 48 months, 54 months, and 60 months post-ablation.
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