“Of course, you get depression in this situation”: Explanatory Models (EMs) among Afghan refugees in camps in Northern Greece.

Background: Afghan refugees and asylum seekers constitute one of the largest groups that live in camp settings in Greece. While they experience psychological distress, they are facing significant barriers in accessing appropriate mental health care. Explanatory Models (EMs) provide a context-sensitive framework for understanding the differences between health professionals, refugees and NGOs that operate on the field. This study aims at further understanding how Afghan refugees perceive and explain depression and largely psychological distress, and how this influences their choices for coping strategies and help-seeking. Methods: This qualitative study included six vignette-based semi-structured focus-group discussions with Afghan refugees and asylum-seekers (total N = 19, 12 female and 7 male) residing largely in camp settings in Northern Greece. The vignette describes a fictional person with symptoms of depression in line with DSM-5 and ICD-10 criteria. The interviews were recorded, transcribed, and analysed through template analysis. Results: EMs for depression are explained through Pre-migration Traumatic Experiences (PMTE) and Post-migration Living Difficulties (PMLD) relating to camp settings. Female participants identified gender-based and domestic violence as contributing to psychological distress while males highlighted conflict and persecution. Life in the camp with associated inactivity, and uncertainty for the future, was perceived as a significant risk factor for psychological distress among females and males. In terms of coping strategies, females tended to focus on mobilizing collective resources within the camp (e.g. safe space for women facilitating emotional support), while males advocated for self-empowerment and solution-oriented coping. The value of engagement in peer helper-roles was highlighted. Conclusions: The results highlight the potential value of community-based psychosocial approaches to support and promote mental health within camp settings. Additionally, they may inform policies and practices regarding access to appropriate mental health care for Afghan refugees. Further research is needed to establish the efficiency of such interventions in this context.publishedVersio

Imaging performance of a CaWO4/CMOS sensor

The aim of this study was to investigate the modulation transfer function (MTF) and the effective gain transfer function (eGTF) of a non-destruc­­tive testing (NDT)/industrial inspection complementary metal oxide semi­conductor (CMOS) sensor in conjunction with a thin calcium tungstate (CaWO4) screen. Thin screen samples, with dimensions of 2.7x3.6 cm2 and thick­ness of 118.9 μm, estimated from scanning electron microscopy-SEM im­ages, were extracted from an Agfa Curix universal screen and coupled to the active area of an active pixel (APS) CMOS sensor. MTF was assessed using the slanted-edge method, following the IEC 62220-1-1:2015 method. MTF values were found high across the examined spatial frequency range. eGTF was found maximum when CaWO4 was combined with charge-coupled devices (CCD) of broadband anti-reflection (AR) coating (17.52 at 0 cycles/mm). The com­bi­nation of the thin CaWO4 screen with the CMOS sensor provided very pro­mis­ing image resolution and adequate efficiency properties, thus could be also con­sidered for use in CMOS based X-ray imaging devices, for various applications

The Citizens against Depression project

International audienc

Multifeature Quantification of Nuclear Properties from Images of H&E-Stained Biopsy Material for Investigating Changes in Nuclear Structure with Advancing CIN Grade

Background. Cervical dysplasia is a precancerous condition, and if left untreated, it may lead to cervical cancer, which is the second most common cancer in women. The purpose of this study was to investigate differences in nuclear properties of the H&E-stained biopsy material between low CIN and high CIN cases and associate those properties with the CIN grade. Methods. The clinical material comprised hematoxylin and eosin- (H&E-) stained biopsy specimens from lesions of 44 patients diagnosed with cervical intraepithelial neoplasia (CIN). Four or five nonoverlapping microscopy images were digitized from each patient’s H&E specimens, from regions indicated by the expert physician. Sixty-three textural and morphological nuclear features were generated for each patient’s images. The Wilcoxon statistical test and the point biserial correlation were used to estimate each feature’s discriminatory power between low CIN and high CIN cases and its correlation with the advancing CIN grade, respectively. Results. Statistical analysis showed 19 features that quantify nuclear shape, size, and texture and sustain statistically significant differences between low CIN and high CIN cases. These findings revealed that nuclei in high CIN cases, as compared to nuclei in low CIN cases, have more irregular shape, are larger in size, are coarser in texture, contain higher edges, have higher local contrast, are more inhomogeneous, and comprise structures of different intensities. Conclusion. A systematic statistical analysis of nucleus features, quantified from the H&E-stained biopsy material, showed that there are significant differences in the shape, size, and texture of nuclei between low CIN and high CIN cases

Visualization of meniscus with 3D axial reconstructions

Purpose: To visualize the meniscus of the knee joint in the axial plane and identify injuries that cannot be visualized using conventional sequences. Methods: Two hundred and two subjects underwent an improvised 3-Dimensional Proton Density Fat Saturation (3D-PD FS) Magnetic Resonance (MR) sequence on their meniscus. The transverse images were reconstructed and examined. Fifty-three of the subjects had a healthy meniscus and their images were used as part of a qualitative evaluation to verify that all parts of the meniscus were properly visualized. The evaluation was based on a four-level scale indicating the visualization of meniscal parts. The same evaluation was also performed on the 149 subjects with meniscal pathologies. Another qualitative evaluation was performed on all subjects concerning five image characteristics based on a five-level scale. Finally, images from 20 patients with meniscal pathologies were compared with arthroscopic images visualizing meniscal tears. Results: In all subjects, all parts of the meniscus were clearly visualized. The axial reformats provided ideal imaging of the meniscus, yielding high total image quality, satisfactory smoothing and sharpening, fewer artifacts, and successful fat saturation. The findings of the MR images from the 20 subjects with meniscal pathologies, concerning the topography of meniscal tears coincided at 100% with their arthroscopic findings. Conclusion: The use of the improvised 3D-PD FS sequence provides the possibility of axial reconstruction with a better depiction of the meniscus. These images can accurately illustrate the range of the meniscus and any meniscal tears along with their exact location with high image quality. © 202

On the thermal response of LuAG:Ce single crystals

It is well known that the luminescence efficiency of single crystals is affected by external parameters, such as the environmental temperature, especially in harsh environments. Due to this, it is of worth to examine the influence of temperature on the luminescence output of single-crystal scintillators. In this study lutetium aluminum garnet (Lu3Al5O12:Ce-LuAG:Ce) was examined, against previously published data for cadmium tungstate (CdWO4) and calcium fluoride doped with europium (CaF2:Eu) single crystals. Experiments were carried using a medical X-ray source, set to fixed high voltage (90kVp) and tube current/exposure time product (63mAs), in order to record the produced light, under different temperature conditions (20-120 Celsius). An interesting finding is that temperature, in the examined range, appear to have minimal influence on the light output of LuAG:Ce, in the contrary to the previously examined crystals (CdWO4 and CaF2:Eu) where the luminescence output constantly decreased with increasing temperature. The thermal stability of LuAG:Ce, in the examined temperature range, renders it a good choice, besides medical imaging, also for application in harsh environments as well as for long-term operation in high power LEDs. © 2021 The Authors. Published by Elsevier B.V