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Published on: June 7, 2020
Growth Dynamics of Brain Tumor Through the Lens of MT-Weighted MRI
Manoj Singh1, Chitra Venugopal1, Sheila K Singh2
1Department of Surgery, McMaster University, Hamilton, ON, Canada.
Abstract:
Magnetic resonance imaging (MRI) is a well-established medical imaging technique that is used to visualize internal structures of the body without the use of ionizing radiation. Instead, MRI uses radio waves and a strong magnetic field to construct detailed cross-sectional images of various parts of the body, including the brain and spine. Magnetization transfer MRI is a well-established medical imaging technique based on the underlying physics of nuclear magnetic dipole-dipole interaction between water and macromolecules in a relaxation mechanism. Here we use this technique to acquire MRI images of human glioblastoma, medulloblastoma, and brain metastasis tumors in a patient-derived orthotopic xenograft model.
Insights
Magnetization transfer MRI visualizes brain tumors like glioblastoma and medulloblastoma in a preclinical model. This advanced imaging technique aids in understanding tumor characteristics without radiation.
Area of Science:
- Biomedical Imaging
- Neuro-oncology
- Radiology
Background:
- Magnetic Resonance Imaging (MRI) is a non-invasive technique using magnetic fields and radio waves for detailed internal body imaging.
- Magnetization Transfer (MT) MRI leverages nuclear magnetic dipole-dipole interactions for enhanced contrast, particularly between water and macromolecules.
- MT MRI is a valuable tool for characterizing tissue properties in various medical applications.
Purpose of the Study:
- To apply Magnetization Transfer MRI for imaging human brain tumors in a preclinical model.
- To acquire detailed MRI images of glioblastoma, medulloblastoma, and brain metastasis xenografts.
- To evaluate the utility of MT MRI in visualizing and potentially characterizing different types of brain tumors.
Main Methods:
- Utilized a patient-derived orthotopic xenograft model in animals.
- Acquired Magnetic Resonance Imaging (MRI) data using the Magnetization Transfer (MT) technique.
- Focused on imaging specific human brain tumors: glioblastoma, medulloblastoma, and brain metastasis.
Main Results:
- Successfully acquired Magnetization Transfer MRI images of human brain tumors within the xenograft model.
- Demonstrated the capability of MT MRI to visualize glioblastoma, medulloblastoma, and brain metastasis.
- Provided detailed cross-sectional images of tumor structures, highlighting the technique's potential.
Conclusions:
- Magnetization Transfer MRI is effective for visualizing human brain tumors in a preclinical xenograft model.
- The technique offers detailed imaging of glioblastoma, medulloblastoma, and brain metastasis.
- MT MRI shows promise as a tool for preclinical research in neuro-oncology.
