BACKGROUND: As low-field magnetic resonance imaging (MRI) has very limited significance for intraoperative control of @entity5 removal (TTR), we examined the influence of 1.5-T MRI, incorporating higher resolution into the intraoperative strategy of @entity976 surgery. METHODS: Surgery with intraoperative imaging was performed in 25 selected @entity1 in whom @entity5 resection was anticipated to be difficult according to pre-operative findings. RESULTS: Intraoperative MRI confirmed the intended extent of @entity5 removal in 15 @entity1 (14 TTRs, one intended incomplete removal, while a second procedure was scheduled due to complex shape). Misinterpretation was false positive or negative in one @entity1 each. The extent of removal was not achieved as expected in eight @entity1 (expectation: seven TTRs, one incomplete removal). In three @entity1 , the expected TTR was achieved by resuming surgery. In another case, that goal was accomplished by performing an unscheduled second procedure. In total, by using intraoperative imaging, the rate of TTR was increased by 16% (four @entity1 ), leading to 80% in the entire series. Compared with the literature, the rate of new @entity4903 is acceptable; the rate of other surgical complication is slightly higher but not directly caused by intraoperative imaging. CONCLUSION: Intraoperative 1.5-T MRI provides benefits because of good early prediction of TTR (sensitivity, positive predictive value: 93.8%; specificity, negative predictive value: 88.9%) and a low rate of false-positive results. Moreover, extended resection of remnants visualized is enabled and helps to increase the rate of TTR but does not exclude recurrence.

Benefit of 1.5-T intraoperative MR imaging in the surgical treatment of XXXX .

@entity5 :: ('MESH:D009369', 'Disease') :: ['tumor', 'total tumor'] @entity1 :: ('9606', 'Species') :: ['patients', 'patient'] @entity976 :: ('MESH:D003397', 'Disease') :: ['craniopharyngioma'] @entity4903 :: ('MESH:D004700', 'Disease') :: ['ophthalmologic and endocrine deficits']
@entity976 :: (MESH:D003397,Disease) :: ['craniopharyngiomas']
