At Gleneagles Hospital Penang, alongside our team of highly skilled neurosurgeons and support staffs, we employ cutting-edge technologies such as Diffusion Tensor Imaging (DTI) to ensure the most precise diagnoses and treatments.
The DTI is an innovative MRI-based technique that offers a unique glimpse into the brain's white matter architecture.
The human brain is a marvel of intricate connections. Billions of nerve fibres, bundled together as white matter tracts, form a complex network that allows different brain regions to communicate and orchestrate our thoughts, actions, and sensations. But how do we visualize this hidden architecture? Enter diffusion tensor imaging, or DTI, a technique that offers a unique window into the brain's white matter organization.
Figure 1: White and Gray matter image
White matter allows different parts of the brain to talk to each other.
When you see an object, for example, visual information travels from your eyes to the visual cortex in the back of your brain. The white matter then carries signals to other brain regions involved in processing the information, like those responsible for recognition or movement.
This coordinated communication across different brain areas is essential for all our thoughts, actions, and sensations.
The integrity and organization of white matter are crucial for efficient brain function. If the white matter is damaged or diseased, the pathways themselves can become disrupted. This affects the flow of information, leading to various neurological problems. For example, impaired white matter integrity can manifest as:
Figure 2: Diffusion tensor imaging used to reconstruct network connections in the brain (tractography). Similarly oriented fibres are shown in the same colour. Reprinted from Moriah E. Thomason and Paul M. Thompson, 2011, Diffusion imaging, white matter, and psychopathology, Annual Review of Clinical Psychology 7:63-85. National Academies of Sciences, Engineering, and Medicine. 2012. Fueling Innovation and Discovery: The Mathematical Sciences in the 21st Century. Washington, DC: The National Academies Press. https://doi.org/10.17226/13373.
Beyond offering a map of the white matter pathways in your brain, DTI serves as a valuable tool in various neurological contexts:
DTI is a valuable tool for studying how the brain develops. A 2015 study showed that DTI could track the progressive organization of white matter tracts in infants, providing insights into brain development [1].
DTI readings can help explain unclear changes in a patient's condition, especially for multiple sclerosis (MS). This is particularly valuable when conventional MRI scans are inconclusive, as DTI can detect abnormalities in white matter structure that may precede symptoms [2].
Studies have shown that DTI can significantly improve surgical outcomes. Using DTI for brain tumour surgery has led to a reduction in post-operative neurological deficits [3] [4].
By combining a team-oriented approach with the latest advancements in technology like DTI, Gleneagles Hospital Penang is committed to providing exceptional neurosurgical care to our patients. We are confident in offering the most accurate diagnoses, effective treatment plans, and successful outcomes for a wide range of neurological conditions.
[1] Qiu A, Mori S, Miller MI. Diffusion tensor imaging for understanding brain development in early life. Annu Rev Psychol. 2015 Jan 3;66:853-76. doi: 10.1146/annurev-psych-010814-015340. PMID: 25559117; PMCID: PMC4474038.
[2] ElSayed, M.E.K.A., El-Toukhy, M.M.B., Asaad, R.E. et al. Diffusion tensor imaging for assessment of normally appearing white matter of the brain and spinal cord in cases of multiple sclerosis: a multi-parametric correlation in view of patient’s clinical status. Egypt J Radiol Nucl Med 50, 30 (2019). https://doi.org/10.1186/s43055-019-0031-x
[3] Jung, H., Shah, A. & Li, G. Use of Diffusion Tensor Imaging in the Resection of Gliomas. Curr Surg Rep 2, 69 (2014). https://doi.org/10.1007/s40137-014-0069-7
[4] Edgar G. Ordonez-Rubiano1, Jason M. Johnson2, Nadin Abdalá-Vargas3, Oscar F. Zorro1, Jorge H. Marin-Munoz1, Ricardo Álvarez-Tobián4, Valeria Forlizzi5, Carlos Castillo Rangel6, Sabino Luzzi7, Alvaro Campero8, Javier G. Patiño-Gómez1, Matias Baldoncini9. Preoperative tractography algorithm for safe resection of tumors located in the descending motor pathways zone. 21-Jul-2023;14:255. Available from: https://surgicalneurologyint.com/surgicalint-articles/preoperative-tractography-algorithm-for-safe-resection-of-tumors-located-in-the-descending-motor-pathways-zone/
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