Glioma
Conditions
Keywords
gliomas, biological boundary, imaging border, operation
Brief summary
Knowledge of the spatial extent of gliomas is an essential prerequisite for the treatment planning. In particular, the localization of the border zone between tumor infiltrated and normal brain tissue is one of the major problems to be solved before beginning therapy. However, it is a well known problem that, in conventional magnetic resonance imaging (MRI), it often is difficult to detect areas with low tumor infiltration, especially in gliomas, because of their infiltrative and often diffuse nature.The study has two purpose:I.To correlate the imaging border zone with pathological grade of different tumor site following surgery in patients with newly diagnosed intracranial gliomas, work out the biological border zone, and complete resect the tumor.II.To determine the feasibility of defining the optimal target volume for radiation therapy using MR spectroscopy, diffusion, perfusion and functional imaging.
Detailed description
Gliomas are widely infiltrative tumors. Although an oncological resection is not feasible, there is compelling evidence that patients benefit from resection of the tumor. The surgical target is the main tumor bulk, which is defined as the contrast enhancing part of the tumor on preoperative MRI. Surgical treatment in gliomas is based on maximal safe resection of this mass. Several new technologies have been devised to maximize the resection and intraoperative MRI is one of these new technologies. Intraoperative MRI has been shown by many studies to increase the extent of resection in glioma surgery. Intraoperative determination of the extent of resection, however, requires use of intravenous contrast administration, which has some technical limitations. Fundamental problems associated with the use of contrast material are the enhancement at the resection margin and contrast leakage into the resection cavity. Both problems can complicate the differential diagnosis between residual tumor and surgically induced changes. Nowadays, the basic theory of a largest removal the tumor is the imaging boundary. Knowledge of the spatial extent of gliomas is an essential prerequisite for the treatment planning. In particular, the localization of the border zone between tumor infiltrated and normal brain tissue is one of the major problems to be solved before beginning therapy. However, it is a well known problem that, in conventional magnetic resonance imaging (MRI), it often is difficult to detect areas with low tumor infiltration, especially in gliomas, because of their infiltrative and often diffuse nature.
Interventions
PROCEDUREDetecting of Biological Borders of Gliomas
Neural navigation combined with Intraoperative ultrasound detecting the borders of gliomas, In accordance with established plan to collect multiple targets undergo pathological examination and contrast with imaging boundary to determine the biological boundaries.
Sponsors
General Hospital of Ningxia Medical University
Study design
Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE
Eligibility
Sex/Gender
ALL
Healthy volunteers
No
Inclusion criteria
* Histologically confirmed, newly diagnosed intracranial glioma * A diagnostic contrast enhanced CT/MRI demonstrating the lesion prior to registration * Patient must sign a study specific informed consent form; if the patient's mental status precludes his/her giving informed consent, written informed consent may be given by the patient's legal representative
Exclusion criteria
* Patient without brain gliomas * Inability to obtain histological proof of glioma (functional domain and particular domain) * Psychiatric conditions precluding informed consent * Patients who cannot tolerate operation * Patients who are pregnant or breast feeding * Urine pregnancy test will be performed on women of child bearing potential
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| the biological border zone of glioma | during the operation | Neural navigation combined with Intraoperative ultrasound detecting the borders of gliomas, In accordance with established plan to collect multiple targets undergo pathological examination and contrast with imaging boundary to determine the biological boundaries.Pathological specimen collection:Marked by the tumor center, in a clockwise order of the maximum geometric figure of the tumor:1.Front boundary. 2.Right boundary. 3.Rear boundary. 4.Left boundary. 5.Deepest part |
Secondary
| Measure | Time frame |
|---|---|
| the degree of surgical resection of gliomas | 24 hours after operation |
Other
| Measure | Time frame |
|---|---|
| the optimal target volume for radiation therapy | 3 months after operation |
Countries
China
Contacts
Primary ContactXia hechun, M.D.
Outcome results
None listed