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The first 25 slides, exactly as they appear. The full deck has 51 content slides.
Neurosurgery
Radiosurgery of Intracranial Lesions
Built from Feldman — Neurosurgical Operative Atlas: Neuro-Oncology
What’s inside
8 sections · 51 slides
The Big Idea
What radiosurgery is, and the physics that makes it work
- What is radiosurgery, really?
- The core physics: why crossfire spares healthy brain
- A short history: from idea to instrument
- The first gamma knife prototype
The Machines
Four ways to put focused radiation into the brain
- Gamma Knife: converging cobalt beams
- LINAC: a moving X-ray beam that arcs around the head
- Head frames and masks for radiation delivery
- Proton beam: dumping energy exactly at the target
- Cyberknife: a robot arm with real-time aiming
- Cyberknife treatment plan with multiple targets
- Anatomy of the Cyberknife system
- The four delivery systems at a glance
Choosing the Patient
Selection is the single biggest determinant of success
- How the decision to treat is made
- The breadth of what radiosurgery treats
- Recent studies of radiosurgery for intracranial disease
Benign Tumours
Meningiomas, vestibular schwannomas and pituitary adenomas
- Meningiomas: a strong alternative to resection
- Vestibular schwannomas: control while saving the nerves
- Pituitary adenomas: control the tumour AND the hormones
- Gamma knife for a residual pituitary adenoma
- Pituitary adenomas: outcomes by tumour type
Beyond Tumours
Functional, vascular, and malignant applications
- Functional neurosurgery: lesioning without cutting
- Radiosurgery for epilepsy: promising but debated
- Arteriovenous malformations (AVMs)
- Glioblastoma: the honest, unsettled picture
- Brain metastases: an alternative to WBRT
- When radiosurgery is not the answer
In the Treatment Suite
How a session actually runs, device by device
- Getting ready: perioperative management
- Gamma knife: a same-day, frame-based session
- Evolution of the Leksell gamma knife
- Cyberknife: frameless and image-guided
- LINAC-based radiosurgery: frame plus fused imaging
- After treatment: postoperative care
Complications
What can go wrong, and why
- Why complications happen at all
- How much radiation critical structures tolerate
- Delayed radiation effects on the brain
- Numbers worth remembering
Takeaways
Pulling the chapter together
- Three ideas to carry away
- Conclusion
- References (1/3)
- References (2/3)
- References (3/3)
- Neurosurgical Operative Atlas: Neuro-Oncology