MRA-guided stereotactic radiation treatment planning for cerebral angiomas.
Stereotactic neurosurgical interventions are characterized by a high risk of rupturing intracranial vessels or damaging vital brain structures. By MRI and MRA, the anatomic information necessary for stereotactic treatment planning may be assessed with a single modality as a high-resolution digital image volume. The adequacy of MR as a modality for stereotactic guidance is demonstrated by the example of the radiosurgical treatment of cerebral angiomas. An optimized acquisition protocol, a stereotactic apparatus, a distortion correction and minimization method, and a 3D treatment planning workstation are elements of a proposed preoperative approach which in a clinical study met with good acceptance.
Ehricke
H H
HH
Siemens Medical Systems, MR-Engineering Group, Erlangen, Germany.
Schad
L R
LR
D000465:Algorithms; D000792:Angiography; D001932:Brain Neoplasms / Q000098:blood supply / Q000473:pathology / Q000532:radiotherapy*; D003196:Computer Graphics; D003199:Computer Systems; D003626:Data Display; D004867:Equipment Design; D006391:Hemangioma / Q000098:blood supply / Q000473:pathology / Q000532:radiotherapy*; D006801:Humans; D007089:Image Enhancement / Q000295:instrumentation / Q000379:methods; D008279:Magnetic Resonance Imaging / Q000295:instrumentation / Q000379:methods*; D011879:Radiotherapy Dosage; D011880:Radiotherapy Planning, Computer-Assisted; D013238:Stereotaxic Techniques / Q000295:instrumentation