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Intraarterial chemotherapy for brain tumors by using a spatial dose fractionation algorithm and pulsatile delivery
Y P Gobin1, T F Cloughesy, K L Chow
1Department of Radiology, B7-146A, UCLA Medical Center, 10833 Le Conte Ave, Los Angeles, CA 90095-1721, USA. pgobin@mednet.ucla.edu
Radiology
|March 7, 2001
Summary
This study validates a spatial dose fractionation algorithm for intraarterial chemotherapy in brain tumors, showing it minimizes neurotoxicity. The pulsatile injection technique and algorithm significantly reduce complications, enhancing patient safety.
Area of Science:
- Neuro-oncology
- Neurosurgery
- Chemotherapy
Background:
- Intraarterial chemotherapy for brain tumors can cause complications.
- Optimizing drug delivery is crucial for minimizing neurotoxicity.
Purpose of the Study:
- To identify causes of complications in intraarterial chemotherapy for brain tumors.
- To validate a novel dosage algorithm based on arterial territory for improved drug delivery.
Main Methods:
- Retrospective review of 462 procedures in 113 patients undergoing intraarterial chemotherapy.
- Utilized a spatial dose fractionation algorithm dividing dosage by cerebral arterial territories (MCA, ACA, PCA, perforators).
- Analyzed complications and predictors in a subgroup analysis.
Main Results:
- Overall complication rate was low (1.3% asymptomatic, 2.6% transient neurologic, 1.2% permanent neurologic, 7.0% seizures).
- The validated spatial dose fractionation algorithm was a strong predictor of reduced seizure and neurologic deficit.
- Pulsatile infusion technique was employed.
Conclusions:
- Intraarterial chemotherapy-induced neurotoxicity can be minimized.
- A pulsatile injection technique combined with the spatial dose fractionation algorithm improves safety and efficacy in brain tumor treatment.