Röntgen- und Neutronentomographie am knöchernen Innenohr der Bartenwale

Arlt, Tobias; Wieder, Frank; Ritsche, Indira S.; Hilger, André; Kardjilov, Nikolay; Fahlke, Julia M.; Hampe, Oliver; Manke, Ingo

doi:10.3139/120.111129

Cited by 3 publications

(2 citation statements)

References 13 publications

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“…To utilise the entire gray scale range of the detector, the exposure time was adjusted. Appropriate filter (copper or aluminium), accelerating voltage and emission current of the X-ray source were selected accordingly (see also Arlt et al, 2018). 3D image reconstruction of the CT scans was done using Octopus 8 (Inside Matters).…”

Section: Methodsmentioning

confidence: 99%

Two exceptional Balaenomorpha (Cetacea: Mysticeti) from the Biemenhorst Subformation (middle/late Miocene) of Bocholt (W Münsterland, Germany) with a critical appraisal on the anatomy of the periotic bone

Ritsche,

Hampe

2023

Palaeontol Electron

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Here we present two new Miocene basal balaenomorph mysticetes recognized by periotic bones with a unique combination of characters. The fossil periotics originated from former shallow marine sediments and were discovered in a suburban quarry of Bocholt in the German Münsterland holding a number of remains of a multispecies community of mysticetes. A detailed accompanying analysis of the internal and external structures of mysticete periotics resulted in a critical review and revision of two important characteristics of the pars cochlearis. The partition between the openings for the facial nerve and the vestibulocochlear nerve, named here 'bony septum' for baleen whales, has been developed so prominently during mysticete evolution that the crista transversa is no longer recognizable in derived forms, as it lies deep inside the inner ear canal and within the fundus of the internal acoustic meatus where it separates the cochlear nerve from the inferior vestibular nerve. We show that the designation of the opening for the superior vestibular nerve as 'foramen singulare' is misleading since this term describes the opening for the nerve to the posterior semicircular canal within the fundus of the internal acoustic meatus.

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Section: Methodsmentioning

confidence: 99%

Two exceptional Balaenomorpha (Cetacea: Mysticeti) from the Biemenhorst Subformation (middle/late Miocene) of Bocholt (W Münsterland, Germany) with a critical appraisal on the anatomy of the periotic bone

Ritsche,

Hampe

2023

Palaeontol Electron

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“…For example, in archaeology or cultural heritage, CT is applied to identify materials used and to retrace manufacturing techniques and [ 10 ] it helps identifying the internal morphology of new fossil species [ 11 ] or the bony inner ear of baleen whales. [ 12 ] In biomedicine and biology, CT is used to study dental materials [ 13 ] or articular cartilages, where true cellular resolution was demonstrated by optimization of phase contrast imaging. [ 14 ] This was also exploited in unveiling the 3D structural changes of sugarcane bagasse.…”

Section: Synchrotron X‐ray Computed Tomography (Sxct)mentioning

confidence: 99%

A Review of X‐Ray Imaging at the BAMline(BESSY II)

et al. 2023

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The hard X‐ray beamline BAMline at BESSY II (Berlin, Germany) has now been in service for 20 years. Several improvements have been implemented in this time, and this review provides an overview of the imaging methods available at the BAMline. Besides classic full‐field synchrotron X‐ray computed tomography (SXCT), also absorption edge CT, synchrotron X‐ray refraction radiography (SXRR), and synchrotron X‐ray refraction tomography (SXRCT) are used for imaging. Moreover, virtually any of those techniques are currently coupled in situ or operando with ancillary equipment such as load rigs, furnaces, or potentiostats. Each of the available techniques is explained and both the current and the potential usage are described with corresponding examples. The potential use is manifold, the examples cover organic materials, composite materials, energy‐related materials, biological samples, and materials related to additive manufacturing. The article includes published examples as well as some unpublished applications.

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