Clinical trial · Interventional
Borderzone Sampling
Does Borderzone Contrast Enhancement on Intraoperative MRI During High Grade Glioma Resection Correlate With Residual Tumor?
- Source
- ClinicalTrials.gov
- Retrieved
- Sep 8, 2026
- Layer
- normalized (units and labels harmonized; values unchanged)
- Run
- ING-CLINICALTRIALS-20260908-000001
Summary
Brief summary (as posted)
On regular (diagnostic) MRI images brain tumors can show "contrast enhancement": uptake of an intravenously administered contrast agent can cause an enhancement pattern that is seen as a white area on a frequently used MRI protocol ("T1 weighted imaging"). High grade gliomas are a common brain tumor that share this enhancement pattern. The goal of surgery is to resect this contrast enhancing part without causing additional neurological damage. Intraoperative MRI (iMRI) is a helpful tool in achieving this goal, because it can provide updated images during resection and correct for deformations that occur in the brain during surgery. These deformations make preoperative images that are used for standard neuronavigation systems less reliable. However, due to manipulations during surgery, the contrast uptake during surgery may differ from contrast uptake in diagnostic MRI. This study aims to relate contrast enhancement on iMRI and tumor characteristics on tissue samples from the tumor. When the neurosurgeon considers the resection of the high grade glioma to be complete, an iMRI scan will be made, and tissue sampling will be performed on the borderzones of the tumor or tumor resection cavity respectively. This will provide insight in the relation between contrast enhancement on iMRI and the presence of tumor tissue. Such knowledge is important to improve effectiveness and safety of iMRI guided brain tumor resection.
Conditions
Conditions (2)
Free-text conditions as registered, with the CancerIndex entity they were reconciled to and the match type.
| Condition (as posted) | Mapped entity | Match | Confidence |
|---|---|---|---|
| Glioblastoma | Glioblastoma | CURATED_BROADER | 0.80 |
| High Grade Glioma | High-Grade Glioma, NOS | ONTOLOGY_EXACT | 0.90 |
Interventions
Interventions (1)
| Intervention | Type | Mapped drug | Match |
|---|---|---|---|
| PoleStar N20 intraoperative MRI | Device | — | UNRESOLVED |
Design
Arms and outcomes
Arms (1)
- type
- EXPERIMENTAL
- label
- PoleStar N20 intraoperative MRI
- description
- PoleStar N20 intraoperative MRI
- interventionNames
- Device: PoleStar N20 intraoperative MRI
Primary outcomes (1)
- measure
- The relation between the shape and size of contrast enhancement on intraoperative MRI at the resection cavity border, and the presence of residual tumor tissue.
- timeFrame
- after surgery, and after 1 year for additional immunochemistry
Secondary outcomes (3)
- measure
- The relation between possible contrast enhancement and contrast enhancing tissue volume on the last intraoperative MRI scan and the early diagnostic MRI scan
- timeFrame
- within 72 hours after surgery
Eligibility
Eligibility (as posted)
- Sex
- All
- Minimum age
- 18 Years
Show eligibility criteria text
Inclusion Criteria: * supratentorial brain tumor, on contrast enhanced MRI suspect for a high grade glioma * indication for resection of the tumor * age ≥ 18 years * WHO Performance Scale ≤ 2 * ASA class ≤ 3 * good knowledge of the Dutch language * informed consent Exclusion Criteria: * recurrent tumor * multiple tumor localizations * prior radiotherapy on the skull * prior chemotherapy
References
Publications (0)
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