The role of intraoperative magnetic resonance imaging for the detection of hemorrhagic complications during surgery for intracerebral lesions an experimental approach
| Autor: | Wilhelm Küker, Ina Rohde, Joachim M. Gilsbach, Veit Rohde, Azize Ince, Ruth Thiex |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2001 |
| Předmět: |
medicine.medical_specialty
Time Factors Swine medicine.medical_treatment Fluid-attenuated inversion recovery Neurosurgical Procedures Intraoperative MRI Hematoma Biopsy medicine Animals Intraoperative Complications Cerebral Hemorrhage Intracerebral hemorrhage Brain Diseases medicine.diagnostic_test business.industry Brain Magnetic resonance imaging Microsurgery medicine.disease Magnetic Resonance Imaging Surgery Neurology (clinical) Radiology Complication business |
| Zdroj: | Surgical neurology. 56(4) |
| ISSN: | 1879-3339 0090-3019 |
| Popis: | BACKGROUND Intraoperative magnetic resonance imaging (MRI) for guided biopsy or microsurgical resection of intracranial lesions is gaining broader acceptance. It is not known whether intraoperative MRI has the potential to detect hemorrhagic complications of these surgical procedures, because scientific research has so far focussed on the signal characteristics of less acute clots. It is the objective of this experimental study to investigate whether MRI can visualise intracerebral blood within minutes after its occurence. METHODS In 26 pigs, a frontal hematoma was produced by injecting autologous blood. Twenty pigs underwent MRI 30 minutes after injection, and 6 pigs within the first 10 minutes. MRI scans were performed on a 1.5T system. T1-weighted spin echo (SE), T2-weighted turbo spin echo (TSE), T2-weighted fluid attenuated inversion recovery (FLAIR), and T2-weighted gradient echo (GE) images were acquired. Depending on the differences of the signal intensities of the hematoma and the surrounding brain, the detectability of the hematoma was rated as good, fair, or poor. RESULTS None of the induced hematomas were rated to be clearly visible on T1-weighted sequences. Six of the 26 hematomas (23%) were easily detectable on FLAIR sequences, 18 hematomas (69%) on T2-weighted TSE sequences, and 23 hematomas (88%) on the T2-weighted GE sequences. CONCLUSION Extravasated blood can be identified with a high reliability within minutes after its occurrence on MRI provided that T2-weighted GE sequences are used for imaging. In conclusion, intraoperative MRI is not only of value for guidance of neurosurgical procedures, but also for immediate detection of hemorrhagic complications. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect