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Background: Alexithymia is a personality trait characterized by difficulties in identifying and describing emotions and associated with various psychiatric disorders. Neuroimaging studies found evidence for morphological and functional brain alterations in alexithymic subjects. However, the neurobiological mechanisms underlying alexithymia remain incompletely understood. Methods: We study the association of alexithymia with cortical correlation networks in a large community-dwelling sample of the Study of Health in Pomerania. Our analysis includes data of n = 2,199 individuals (49.4% females, age = 52.1 ± 13.6 years) which were divided into a low and high alexithymic group by a median split of the Toronto Alexithymia Scale. Cortical correlation networks were constructed based on the mean thicknesses of 68 regions, and differences in centralities were investigated. Results: We found a significantly increased centrality of the right paracentral lobule in the high alexithymia network after correction for multiple testing. Several other regions with motoric and sensory functions showed altered centrality on a nominally significant level. Conclusions: Finding increased centrality of the paracentral lobule, a brain area with sensory as well as motoric features and involvement in bowel and bladder voiding, may contribute to explain the association of alexithymia with functional somatic disorders and chronic pain syndromes.
: Background: High-impact trauma frequently leads to injuries of the orbit, but literature
focusing on the viscerocranium rather than the neurocranium is underrepresented. Methods: Retrospective cohort study (2006–2014) at an urban level 1 trauma center assessing the frequency and
typical patterns of orbital injuries on whole-body computed tomography (WBCT) with maxillofacial
multi-slice CT (MSCT) after severe trauma. (1) Screening of consecutive WBCT cases for dedicated
maxillofacial MSCT. (2) Examination by two independent experts’ radiologists for (peri-/)orbital
injuries. (3) Case review for trauma mechanisms. Results: 1061 WBCT were included revealing 250
(23.6%) patients with orbital injuries. Less than one-quarter (23.3%) of patients showed osseous
and 9.5% showed soft tissue injuries. Combined osseous and soft tissue lesions were present in
39.2% of orbital injuries, isolated soft tissue injuries were rare. Single- or two-wall fractures of the
orbit were prevalent, and the orbital floor was affected in 67% of fractures. Dislocated extraocular
muscles (44.6%), deformation of the ocular globe (23.8%), and elongation of the optic nerve (12.9%)
were the most frequently soft tissue findings. Vascular trauma was suspected in 15.8% of patients.
Conclusions: Orbital trauma was confirmed in 23.6% of cases with suspected facial injuries after severe
trauma. Concomitant soft tissue injuries should be excluded explicitly in cases with orbital fractures
to prevent loss of vision or ocular motility.
The Accuracy of On-Call CT Reporting in Teleradiology Networks in Comparison to In-House Reporting
(2021)
The Study of Health in Pomerania (SHIP), a population-based study from a rural state in northeastern Germany with a relatively poor life expectancy, supplemented its comprehensive examination program in 2008 with whole-body MR imaging at 1.5 T (SHIP-MR). We reviewed more than 100 publications that used the SHIP-MR data and analyzed which sequences already produced fruitful scientific outputs and which manuscripts have been referenced frequently. Upon reviewing the publications about imaging sequences, those that used T1-weighted structured imaging of the brain and a gradient-echo sequence for R2* mapping obtained the highest scientific output; regarding specific body parts examined, most scientific publications focused on MR sequences involving the brain and the (upper) abdomen. We conclude that population-based MR imaging in cohort studies should define more precise goals when allocating imaging time. In addition, quality control measures might include recording the number and impact of published work, preferably on a bi-annual basis and starting 2 years after initiation of the study. Structured teaching courses may enhance the desired output in areas that appear underrepresented.