Confocal Laser Endomicroscopy for Brain Tumors
Maneno muhimu
Kikemikali
Maelezo
Background:
The prognosis of glioblastoma patients highly depends on resection extent. Various strategies have been introduced to overcome the dilemma of intraoperative tumor identification.
In gastroenterology, confocal laser endomicroscopy (CLE) allows precise differentiation of tumor tissue from surrounding mucosa in various diseases. Combining high-definition white light endoscopy with CLE significantly increases sensitivity and specificity compared with the sole application of high-definition white light endoscopy.
CLE was recently introduced to neurosurgical applications. Although still in an early stage of clinical application, this technique has proven to be capable of differentiating various tumor entities in animal models as well as human tissue samples. CLE allows visualization of the underlying tissue on a microscopic scale, receiving information on the microstructure as well as cellular components. However, the clinical importance of this technique for its application in neurosurgery still needs to be demonstrated
Methods:
Intravenous injection dose of fluorescein sodium. For every operation the investigators plan to take pictures with the CONVIVO system before taking the material for standard frozen section and definitive histopathology. These pictures will be evaluated by a pathologist afterwards.
Objectives:
The primary objective of this trial is to demonstrate, that the CONVIVO system allows identification of tumor tissue. The secondary objectives are procedural aspects and handling issues covering the usability.
Tarehe
| Imethibitishwa Mwisho: | 05/31/2020 |
| Iliyowasilishwa Kwanza: | 02/19/2020 |
| Uandikishaji uliokadiriwa Uliwasilishwa: | 02/19/2020 |
| Iliyotumwa Kwanza: | 02/20/2020 |
| Sasisho la Mwisho Liliwasilishwa: | 06/10/2020 |
| Sasisho la Mwisho Lilichapishwa: | 06/15/2020 |
| Tarehe halisi ya kuanza kwa masomo: | 06/04/2020 |
| Tarehe ya Kukamilisha Msingi iliyokadiriwa: | 03/30/2022 |
| Tarehe ya Kukamilisha Utafiti: | 09/29/2022 |
Hali au ugonjwa
Uingiliaji / matibabu
Device: CONVIVO
Awamu
Vikundi vya Arm
| Mkono | Uingiliaji / matibabu |
|---|---|
| Experimental: CONVIVO tumor tissue identification with the CONVIVO system | Device: CONVIVO tumor tissue with the CONVIVO system |
Vigezo vya Kustahiki
| Zama zinazostahiki Kujifunza | 18 Years Kwa 18 Years |
| Jinsia Inastahiki Kujifunza | All |
| Hupokea Wajitolea wa Afya | Ndio |
| Vigezo | Inclusion Criteria: - The patient is undergoing neurosurgery for a suspected brain tumor (Metastasis, Lower Grade Glio-ma or Higher Grade Glioma) and amenable to surgical resection by fluorescent guided technique - The patient has an indication for tumor resection - Macroscopic tumor visualization using sodium fluorescein is planned, concentration 5-10mg/kg - The patient is older than 18 years - Written consent Exclusion Criteria: - Stereotactic biopsy procedure - Patients with any kind of contraindication to the use of fluorescein sodium - Vulnerable persons (pregnant women, patients with Glasgow Coma Scale below 14) - People who do not want to participate in the study - Tumors that do not exactly match the inclusion criteria - Emergency procedures in which no consent was obtained before the operation. - Multiple surgeries on the same patient. - Participation in other ongoing clinical trials |
Matokeo
Hatua za Matokeo ya Msingi
1. Identification of tumor tissue [End of surgery]
Hatua za Matokeo ya Sekondari
1. Accuracy of CONVIVO results [14 days after surgery]
2. Time for tissue visualization with the CONVIVO system [End of surgery]
3. Rate of unclear visualizations [14 days after surgery]
