Myelogenetisch-Anatomische Untersuchungen über den Zentralen Abschnitt der Sehleitung

Pfeifer, Richard Arwed

doi:10.1007/978-3-662-28389-9

Cited by 35 publications

(7 citation statements)

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“…10,34 The posterior or upper bundle courses straight posteriorly to the roof of the atrium and the posterior horn, and radiates into the upper lip of the calcarine fissure. 12,25,33 At the level of the occipital horn, one can find two characteristic elevations in the medial wall of the lateral ventricle: the bulb of the corpus callosum and the lower calcar avis. A third elevation can sometimes be present.…”

Section: Morphological Characteristics Of the Optic Radiationmentioning

confidence: 99%

Optic radiations: a microsurgical anatomical study

Peltier

Travers

Destrieux

et al. 2006

JNS

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Section: Morphological Characteristics Of the Optic Radiationmentioning

confidence: 99%

Optic radiations: a microsurgical anatomical study

Peltier

Travers

Destrieux

et al. 2006

JNS

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“…Figure 4 also shows the para‐atrial area, according to Pfeifer, which consists of five layers. The optic radiation proper is divided into the stratum sagittale externum (Sachs), also referred to as “primäre Sehstrahlung” (Flechsig) or “Sehmarklamelle” (Pfeifer), and the stratum sagittale internum, also called “sekundäre Sehstrahlung” (Flechsig) 14. Approaching from the lateral area, periventricular leukomalacia will affect the geniculocalcarine tract first.…”

Section: Resultsmentioning

confidence: 99%

“…Several atlases were consulted for studying neuro‐anatomical structures. Images were extracted and adapted from Pfeifer 14, Nieuwenhuys et al 15, Haines 16 and Brodal 17.…”

Section: Methodsmentioning

confidence: 99%

Sonographic detection of the optic radiation

et al. 2005

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Objective: To describe a region of hyperechoic white matter adjacent to the atrium of the lateral ventricle of preterms, and to speculate on the relevance of detecting preterm white matter injury. Patients and methods: Cranial ultrasound images of 92 preterms of gestational age (GA) 32 wk or less were reviewed. For each infant, one first week standard coronal image was used for measurement of grey values around the para‐atrial region of interest (PAROI) relative to the choroid plexus. For verification of the sonographic anatomy, MR images of an adult brain were used. For reference, neuro‐anatomical images were compared in several atlases. In a group of nine preterms of similar GA with cystic periventricular leukomalacia (PVL) or MR‐confirmed white matter disease, the disappearance of the PAROI was examined. Results: The hyperechoic para‐atrial area, subjectively detected in 84% of the patients, was situated bilaterally between the inner end of the lateral fissure and the upper third of the choroid plexus. In white matter caudal to the atrium, the hyperechoic band could be pursued towards the calcarine area. The average ratio of grey value around the PAROI to the choroid plexus was 0.787 (SD=0.072, median 0.791). There was no correlation between PAROI grey value and gestational age. At 26 wk gestational age, the average ratio was 0.781 (n=14), and 0.789 (n=17) at 31 wk. Location of the PAROI agrees with the angle of the upper loop of the optic radiation. None of the nine infants with white matter damage had PAROIs clearly distinguishable from flaring. Conclusion: The symmetrical and unchanged acoustic character between 26 and 31 wk of gestational age argues in favour of the hypothesis that the PAROI is an anatomical structure. The localization of the hyperechoic band supports the hypothesis that it represents part of the optic radiation. Further study is needed to examine the absence of a hyperechoic para‐atrial band as a prognostic marker of the extension and severity of white matter injury.

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“…Furthermore, it needs to be considered that white and grey matter are difficult to study within the very same section using this technique, as the staining needs to be tuned to optimally reveal either the large fiber bundles within the white matter (e.g. optical radiation) or the intracortical fiber architecture, classically referred to as myeloarchitecture sensu stricto . Having said this, one limitation of myeloarchitectonic techniques becomes immediately evident: as supragranular layers of the cortex are dominated by dendrites rather than axons, myeloarchitectonic stainings are not well suited to fully account for the supragranular fiber architecture.…”

Section: Using Light Microscopy To Infer Microstructural Correlates?mentioning

confidence: 99%

Decoding the microstructural correlate of diffusion MRI

Caspers

Axer

2017

NMR in Biomedicine

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Diffusion imaging has evolved considerably over the past decade. While it provides valuable information about the structural connectivity at the macro- and mesoscopic scale, bridging the gap to the microstructure at the level of single nerve fibers poses an enormous challenge. This is particularly true for the human brain with its large size, its large white-matter volume and availability of histological techniques for studying human whole-brain sections and subsequent 3D reconstruction. Classic post-mortem techniques for studying the fiber architecture of the brain, such as myeloarchitectonic staining or dye tracing, are complemented by novel histological approaches, such as 3D polarized light imaging or optical coherence tomography, enabling unique insight into the fiber architecture from large fiber bundles within deep white matter to single nerve fibers in the cortex. The present review discusses the benefits and challenges of these latest developments in comparison with the classic techniques, with particular focus on the mutual exchange between in vivo and post-mortem diffusion imaging and post-mortem microstructural approaches for understanding the wiring of the brain across different scales.

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Myelogenetisch-Anatomische Untersuchungen über den Zentralen Abschnitt der Sehleitung

Cited by 35 publications

References 0 publications

Optic radiations: a microsurgical anatomical study

Optic radiations: a microsurgical anatomical study

Sonographic detection of the optic radiation

Decoding the microstructural correlate of diffusion MRI

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