BACKGROUND: Intraoperative magnetic resonance imaging (MRI) for guided biopsy or microsurgical resection of @entity1504 is gaining broader acceptance. It is not known whether intraoperative MRI has the potential to detect @entity548 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 occurrence. METHODS: In 26 @entity1707 , a frontal @entity1410 was produced by injecting autologous blood. Twenty @entity1707 underwent MRI 30 minutes after injection, and 6 @entity1707 within the first 10 minutes. MRI scans were performed on a 1.5T system. T1-weighted @entity9468 ( @entity9468 ), T2-weighted @entity9468 ( @entity9468 ), 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 @entity1410 and the surrounding brain, the detectability of the @entity1410 was rated as good, fair, or poor. RESULTS: None of the induced @entity1410 were rated to be clearly visible on T1-weighted sequences. Six of the 26 @entity1410 (23%) were easily detectable on FLAIR sequences, 18 @entity1410 (69%) on T2-weighted @entity9468 sequences, and 23 @entity1410 (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 @entity548 .

The role of intraoperative magnetic resonance imaging for the detection of XXXX during surgery for intracerebral lesions an experimental approach.

@entity1707 :: ('9823', 'Species') :: ['pigs'] @entity548 :: ('MESH:D006470', 'Disease') :: ['hemorrhagic complications'] @entity1504 :: ('MESH:D002561', 'Disease') :: ['intracranial lesions'] @entity1410 :: ('MESH:D006406', 'Disease') :: ['hematomas', 'hematoma'] @entity9468 :: ('MESH:D014717', 'Disease') :: ['SE', 'turbo spin echo', 'spin echo', 'TSE']
@entity548 :: (MESH:D006470,Disease) :: ['hemorrhagic complications']
