Gamma Knife Radiosurgery
Gamma Knife Radiosurgery - Related Videos
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Stereotactic Radiosurgery for Gynecologic Cancer
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Stereotactic body radiotherapy (SBRT) involves image-guided, ablative radiation delivered to cancer targets refractory to chemotherapy or to conventional radiation treatment. The robotic-armed Cyberknife SBRT system, using sophisticated target localization, delivers hypofractionated radiation doses capable of sterilizing cancer targets. This article will consider new therapeutic roles of SBRT for gynecological cancers.
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Specimen Preparation, Imaging, and Analysis Protocols for Knife-edge Scanning Microscopy
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The full process from brain specimen preparation to serial sectioning imaging using the Knife-Edge Scanning Microscope, to data visualization and analysis is described. This technique is currently used to acquire mouse brain data, but it is applicable to other organs, other species.
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Begin with a patient diagnosed with Alzheimer’s disease, wearing a gamma therapy stimulation device.The device consists of an eye-set and headphones.Using the controller, activate the device to deliver auditory and visual stimulation.The visual component emits flickering light at a gamma frequency, while the auditory component produces synchronized sound pulses.Gamma oscillations are brain waves generated by synchronized neuronal firing, crucial for cognition and memory.In AD, these...
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Intravital Visualization of Gamma Delta Intraepithelial Lymphocytes
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This video demonstrates the visualization of γδ intraepithelial lymphocytes (IELs) in transgenic mice using confocal microscopy. The surgical procedure involves creating a perforation line and making a longitudinal incision to expose the intestinal mucosa and villi. The transgenic mice express reporter proteins exclusively in γδ IELs, allowing their tracking. Intravital imaging captures the dynamic movement of green fluorescence-labeled γδ IELs along the intestinal epithelial cell's basement...
09:04
Recording Gamma Band Oscillations in Pedunculopontine Nucleus Neurons
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Cited by 3 •
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The pedunculopontine nucleus (PPN) is located in the brainstem and its neurons are maximally activated during waking and rapid eye movement (REM) sleep brain states. This work describes the experimental approach to record in vitro gamma band subthreshold membrane oscillation in PPN neurons.
FAQs
The system uses multiple cobalt-60 sources that aim narrow gamma-ray beams at a defined brain target from different angles. Each individual beam can pass through surrounding tissue, while their convergence concentrates the treatment dose at the intended location. This geometry is central to limiting radiation exposure outside the target and supporting precise treatment in sensitive neurological regions.
Beam convergence allows the treatment to deliver a high dose where the beams intersect rather than distributing that same concentration broadly across the brain. The approach is especially relevant when a target lies near structures that clinicians want to preserve. In neuroscience, this precision helps connect treatment planning with the functional importance of surrounding brain tissue.
Unlike open neurosurgery, Gamma Knife Radiosurgery does not require a surgical incision. Its precise radiation delivery can support outpatient care and may reduce recovery time compared with an operation. This difference makes the technique a useful option when clinicians seek targeted treatment while avoiding the tissue disruption associated with conventional surgical access.
Clinical use includes selected brain tumors, arteriovenous malformations, and trigeminal neuralgia. These conditions differ substantially in their underlying neurological problems, yet each can present a defined target suitable for focused treatment. The method therefore serves more than one role in neuroscience, spanning abnormal tissue, vascular malformations, and a disorder associated with severe facial nerve pain.
Treatment centers on identifying a defined target and directing narrow beams from multiple cobalt-60 sources toward it. The beams converge to deliver the intended high dose without an incision, which helps explain why treatment may be provided on an outpatient basis. The essential procedural principle is accurate targeting rather than surgical removal of the affected area.
Clinicians may consider Gamma Knife Radiosurgery for selected disorders when a precisely defined target can be treated without an incision. Its potential advantages include focused dosing, reduced exposure of nearby tissue, outpatient care, and shorter recovery compared with open neurosurgery. The approach is therefore relevant when minimizing surgical disruption is an important treatment consideration.