Matches in SemOpenAlex for { <https://semopenalex.org/work/W2079400875> ?p ?o ?g. }
Showing items 1 to 69 of
69
with 100 items per page.
- W2079400875 abstract "We assessed fMRI in the objective evaluation of visual function during treatment planning and postoperative follow-up in patients with occipital lobe and/or the afferent visual system lesions. Ten normal volunteers and eleven patients harbouring brain lesions with MR evidence of calcarine cortex and/or visual pathway damage underwent ophthalmoscopy, Goldmann perimetry and fMRI examination. Blood oxygenation sensitive series (gradient-echo, T2*-weighted, single-shot EPI: TR = 2 sec, TE = 40 ms, FA = 40 degrees voxel volume 3.1 mm x 3.1 mm x 5 mm) were obtained using a 1.5-Tesla clinical imager with six contiguous slices, covering the occipital lobe parallel to the calcarine fissure. A repetitive, phasic experiment for visual stimulation was achieved using a binocular, stroboscopic, white light flashing at 10 HZ and was repeated twice to test reproducibility. Functional maps, generated using a cross correlation technique, were overlaid onto concurrent high resolution anatomic MR images and compared to Goldmann perimetry results. All volunteers demonstrated symmetric, bilateral, regional signal intensity changes (2%-5%) between photic stimulation and darkness in the primary visual cortex and dorsolateral and ventrolateral al extrastriate areas. Cortical activation maps in ten patients clearly localised asymmetric response within specific regions in the primary visual cortex and correlated with Goldmann perimetry results. Displacement of the eloquent calcarine cortex was demonstrated in a patient with normal perimetry results. Primary visual area activation increased in two patients following surgery. fMRI performed on a conventional MR system can objectively evaluate visual function in neurosurgical patients with occipital lobe and/or afferent visual system lesions as part of treatment planning and postoperative follow-up." @default.
- W2079400875 created "2016-06-24" @default.
- W2079400875 creator A5007440172 @default.
- W2079400875 creator A5019275215 @default.
- W2079400875 creator A5041023818 @default.
- W2079400875 creator A5061747366 @default.
- W2079400875 creator A5063656803 @default.
- W2079400875 date "1998-11-01" @default.
- W2079400875 modified "2023-09-24" @default.
- W2079400875 title "Correlation of Functional MR Imaging with Perimetric Examination in Patients with Visual Field Defects Due to Lesions Involving the Afferent Visual System" @default.
- W2079400875 cites W1971411687 @default.
- W2079400875 cites W1980946168 @default.
- W2079400875 cites W2064386872 @default.
- W2079400875 cites W2070360309 @default.
- W2079400875 cites W2093793583 @default.
- W2079400875 doi "https://doi.org/10.1177/19714009980110s240" @default.
- W2079400875 hasPublicationYear "1998" @default.
- W2079400875 type Work @default.
- W2079400875 sameAs 2079400875 @default.
- W2079400875 citedByCount "0" @default.
- W2079400875 crossrefType "journal-article" @default.
- W2079400875 hasAuthorship W2079400875A5007440172 @default.
- W2079400875 hasAuthorship W2079400875A5019275215 @default.
- W2079400875 hasAuthorship W2079400875A5041023818 @default.
- W2079400875 hasAuthorship W2079400875A5061747366 @default.
- W2079400875 hasAuthorship W2079400875A5063656803 @default.
- W2079400875 hasConcept C118487528 @default.
- W2079400875 hasConcept C126838900 @default.
- W2079400875 hasConcept C15744967 @default.
- W2079400875 hasConcept C169760540 @default.
- W2079400875 hasConcept C2776058522 @default.
- W2079400875 hasConcept C2778046553 @default.
- W2079400875 hasConcept C2779345533 @default.
- W2079400875 hasConcept C71924100 @default.
- W2079400875 hasConceptScore W2079400875C118487528 @default.
- W2079400875 hasConceptScore W2079400875C126838900 @default.
- W2079400875 hasConceptScore W2079400875C15744967 @default.
- W2079400875 hasConceptScore W2079400875C169760540 @default.
- W2079400875 hasConceptScore W2079400875C2776058522 @default.
- W2079400875 hasConceptScore W2079400875C2778046553 @default.
- W2079400875 hasConceptScore W2079400875C2779345533 @default.
- W2079400875 hasConceptScore W2079400875C71924100 @default.
- W2079400875 hasLocation W20794008751 @default.
- W2079400875 hasOpenAccess W2079400875 @default.
- W2079400875 hasPrimaryLocation W20794008751 @default.
- W2079400875 hasRelatedWork W1896144133 @default.
- W2079400875 hasRelatedWork W1968683311 @default.
- W2079400875 hasRelatedWork W2019061512 @default.
- W2079400875 hasRelatedWork W2020046883 @default.
- W2079400875 hasRelatedWork W2024667393 @default.
- W2079400875 hasRelatedWork W2041564767 @default.
- W2079400875 hasRelatedWork W2053826292 @default.
- W2079400875 hasRelatedWork W2066063839 @default.
- W2079400875 hasRelatedWork W2080648019 @default.
- W2079400875 hasRelatedWork W2103826874 @default.
- W2079400875 hasRelatedWork W2152811887 @default.
- W2079400875 hasRelatedWork W2157787134 @default.
- W2079400875 hasRelatedWork W2401593904 @default.
- W2079400875 hasRelatedWork W2764178220 @default.
- W2079400875 hasRelatedWork W2996665848 @default.
- W2079400875 hasRelatedWork W3155711091 @default.
- W2079400875 hasRelatedWork W3193002548 @default.
- W2079400875 hasRelatedWork W32241045 @default.
- W2079400875 hasRelatedWork W640766089 @default.
- W2079400875 hasRelatedWork W2597154408 @default.
- W2079400875 isParatext "false" @default.
- W2079400875 isRetracted "false" @default.
- W2079400875 magId "2079400875" @default.
- W2079400875 workType "article" @default.