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Brunner A, Unterberger SH, Auer H, Hautz T, Schneeberger S, Stalder R, Badzoka J, Kappacher C, Huck CW, Zelger B, Pallua JD. Suitability of Fourier transform infrared microscopy for the diagnosis of cystic echinococcosis in human tissue sections. J Biophotonics 2024:e202300513. [PMID: 38531615 DOI: 10.1002/jbio.202300513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Revised: 02/14/2024] [Accepted: 03/17/2024] [Indexed: 03/28/2024]
Abstract
Cystic echinococcosis (CE) is a global health concern caused by cestodes, posing diagnostic challenges due to nonspecific symptoms and inconclusive radiographic results. Diagnosis relies on histopathological evaluation of affected tissue, demanding comprehensive tools. In this retrospective case study, Fourier transform infrared microscopy was explored for detecting and identifying CE through biochemical changes in human tissue sections. Tissue samples from 11 confirmed CE patients were analyzed. Archived FFPE blocks were cut and stained, and then CE-positive unstained sections were examined using Fourier transform infrared microscopy post-deparaffinization. Results revealed the method's ability to distinguish echinococcus elements from human tissue, irrespective of organ type. This research showcases the potential of mid-infrared microscopy as a valuable diagnostic tool for CE, offering promise in enhancing diagnostic precision in the face of the disease's complexities.
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Affiliation(s)
- A Brunner
- Institute of Pathology, Neuropathology and Molecular Pathology, Medical University of Innsbruck, Innsbruck, Austria
| | - S H Unterberger
- Department of Material-Technology, Leopold-Franzens University Innsbruck, Innsbruck, Austria
| | - H Auer
- Department of Medical Parasitology, Clinical Institute of Hygiene and Medical Microbiology, Medical University of Vienna, Vienna, Austria
| | - T Hautz
- OrganLifeTM, Department of Visceral, Transplant and Thoracic Surgery, Medical University of Innsbruck, Innsbruck, Austria
| | - S Schneeberger
- OrganLifeTM, Department of Visceral, Transplant and Thoracic Surgery, Medical University of Innsbruck, Innsbruck, Austria
| | - R Stalder
- Institute of Mineralogy and Petrography, Leopold-Franzens University Innsbruck, Innsbruck, Austria
| | - J Badzoka
- Institute of Analytical Chemistry and Radiochemistry, University of Innsbruck, Innsbruck, Austria
| | - C Kappacher
- Institute of Analytical Chemistry and Radiochemistry, University of Innsbruck, Innsbruck, Austria
| | - C W Huck
- Institute of Analytical Chemistry and Radiochemistry, University of Innsbruck, Innsbruck, Austria
| | - B Zelger
- Institute of Pathology, Neuropathology and Molecular Pathology, Medical University of Innsbruck, Innsbruck, Austria
| | - J D Pallua
- Department of Hospital for Orthopedics and Traumatology, Medical University of Innsbruck, Innsbruck, Austria
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2
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Zelger P, Brunner A, Zelger B, Willenbacher E, Unterberger SH, Stalder R, Huck CW, Willenbacher W, Pallua JD. Deep learning analysis of mid-infrared microscopic imaging data for the diagnosis and classification of human lymphomas. J Biophotonics 2023; 16:e202300015. [PMID: 37578837 DOI: 10.1002/jbio.202300015] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 07/19/2023] [Accepted: 08/09/2023] [Indexed: 08/15/2023]
Abstract
The present study presents an alternative analytical workflow that combines mid-infrared (MIR) microscopic imaging and deep learning to diagnose human lymphoma and differentiate between small and large cell lymphoma. We could show that using a deep learning approach to analyze MIR hyperspectral data obtained from benign and malignant lymph node pathology results in high accuracy for correct classification, learning the distinct region of 3900 to 850 cm-1 . The accuracy is above 95% for every pair of malignant lymphoid tissue and still above 90% for the distinction between benign and malignant lymphoid tissue for binary classification. These results demonstrate that a preliminary diagnosis and subtyping of human lymphoma could be streamlined by applying a deep learning approach to analyze MIR spectroscopic data.
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Affiliation(s)
- P Zelger
- University Hospital of Hearing, Voice and Speech Disorders, Medical University of Innsbruck, Innsbruck, Austria
| | - A Brunner
- Institute of Pathology, Neuropathology and Molecular Pathology, Medical University of Innsbruck, Innsbruck, Austria
| | - B Zelger
- Institute of Pathology, Neuropathology and Molecular Pathology, Medical University of Innsbruck, Innsbruck, Austria
| | - E Willenbacher
- University Hospital of Internal Medicine V, Hematology & Oncology, Medical University of Innsbruck, Innsbruck, Austria
| | - S H Unterberger
- Institute of Material-Technology, Leopold-Franzens University Innsbruck, Innsbruck, Austria
| | - R Stalder
- Institute of Mineralogy and Petrography, Leopold-Franzens University Innsbruck, Innsbruck, Austria
| | - C W Huck
- Institute of Analytical Chemistry and Radiochemistry, Innsbruck, Austria
| | - W Willenbacher
- University Hospital of Internal Medicine V, Hematology & Oncology, Medical University of Innsbruck, Innsbruck, Austria
- Oncotyrol, Centre for Personalized Cancer Medicine, Innsbruck, Austria
| | - J D Pallua
- University Hospital for Orthopedics and Traumatology, Medical University of Innsbruck, Innsbruck, Austria
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3
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Unterberger SH, Berger C, Schirmer M, Pallua AK, Zelger B, Schäfer G, Kremser C, Degenhart G, Spiegl H, Erler S, Putzer D, Arora R, Parson W, Pallua JD. Morphological and Tissue Characterization with 3D Reconstruction of a 350-Year-Old Austrian Ardea purpurea Glacier Mummy. Biology (Basel) 2023; 12:biology12010114. [PMID: 36671806 PMCID: PMC9855678 DOI: 10.3390/biology12010114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Revised: 01/06/2023] [Accepted: 01/09/2023] [Indexed: 01/12/2023]
Abstract
Glaciers are dwindling archives, releasing animal mummies preserved in the ice for centuries due to climate changes. As preservation varies, residual soft tissues may differently expand the biological information content of such mummies. DNA studies have proven the possibility of extracting and analyzing DNA preserved in skeletal residuals and sediments for hundreds or thousands of years. Paleoradiology is the method of choice as a non-destructive tool for analyzing mummies, including micro-computed tomography (micro-CT) and magnetic resonance imaging (MRI). Together with radiocarbon dating, histo-anatomical analyses, and DNA sequencing, these techniques were employed to identify a 350-year-old Austrian Ardea purpurea glacier mummy from the Ötztal Alps. Combining these techniques proved to be a robust methodological concept for collecting inaccessible information regarding the structural organization of the mummy. The variety of methodological approaches resulted in a distinct picture of the morphological patterns of the glacier animal mummy. The BLAST search in GenBank resulted in a 100% and 98.7% match in the cytb gene sequence with two entries of the species Purple heron (Ardea purpurea; Accession number KJ941160.1 and KJ190948.1) and a 98% match with the same species for the 16 s sequence (KJ190948.1), which was confirmed by the anatomic characteristics deduced from micro-CT and MRI.
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Affiliation(s)
- Seraphin H. Unterberger
- Material-Technology, Leopold-Franzens University Innsbruck, Technikerstraße 13, 6020 Innsbruck, Austria
| | - Cordula Berger
- Institute of Legal Medicine, Medical University of Innsbruck, Muellerstraße 44, 6020 Innsbruck, Austria
| | - Michael Schirmer
- Department of Internal Medicine, Clinic II, Medical University of Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria
| | - Anton Kasper Pallua
- Former Institute for Computed Tomography-Neuro CT, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria
| | - Bettina Zelger
- Institute of Pathology, Neuropathology, and Molecular Pathology, Medical University of Innsbruck, Muellerstrasse 44, 6020 Innsbruck, Austria
| | - Georg Schäfer
- Institute of Pathology, Neuropathology, and Molecular Pathology, Medical University of Innsbruck, Muellerstrasse 44, 6020 Innsbruck, Austria
| | - Christian Kremser
- Department of Radiology, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria
| | - Gerald Degenhart
- Department of Radiology, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria
| | - Harald Spiegl
- WESTCAM Datentechnik GmbH, Gewerbepark 38, 6068 Mils, Austria
| | - Simon Erler
- WESTCAM Datentechnik GmbH, Gewerbepark 38, 6068 Mils, Austria
| | - David Putzer
- University Hospital for Orthopaedics and Traumatology, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria
| | - Rohit Arora
- University Hospital for Orthopaedics and Traumatology, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria
| | - Walther Parson
- Institute of Legal Medicine, Medical University of Innsbruck, Muellerstraße 44, 6020 Innsbruck, Austria
- Forensic Science Program, The Pennsylvania State University, State College, PA 16801, USA
| | - Johannes Dominikus Pallua
- Institute of Legal Medicine, Medical University of Innsbruck, Muellerstraße 44, 6020 Innsbruck, Austria
- Institute of Pathology, Neuropathology, and Molecular Pathology, Medical University of Innsbruck, Muellerstrasse 44, 6020 Innsbruck, Austria
- University Hospital for Orthopaedics and Traumatology, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria
- Correspondence:
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4
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Willenbacher E, Brunner A, Zelger B, Unterberger SH, Stalder R, Huck CW, Willenbacher W, Pallua JD. Application of mid-infrared microscopic imaging for the diagnosis and classification of human lymphomas. J Biophotonics 2021; 14:e202100079. [PMID: 34159739 DOI: 10.1002/jbio.202100079] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 06/15/2021] [Accepted: 06/15/2021] [Indexed: 06/13/2023]
Abstract
Mid-infrared (MIR) microscopic imaging of indolent and aggressive lymphomas was performed including formalin-fixed and paraffin-embedded samples of six follicular lymphomas and 12 diffuse large B-cell-lymphomas as well as reactive lymph nodes to investigate benefits and challenges for lymphoma diagnosis. MIR images were compared to defined pathological characteristics such as indolent versus aggressive versus reactive, germinal centre versus activated cell-of-origin (COO) subtypes, or a low versus a high proliferative index and level of PD-L1 expression. We demonstrated that MIR microscopic imaging can differentiate between reactive lymph nodes, indolent and aggressive lymphoma samples. Also, it has potential to be used in the subtyping of lymphomas, as shown with the differentiation between COO subtypes, the level of proliferation and PD-L1 expression. MIR microscopic imaging is a promising tool for diagnosis and subtyping of lymphoma and further evaluation is needed to fully explore the advantages and disadvantages of this method for pathological diagnosis.
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Affiliation(s)
- Ella Willenbacher
- Internal Medicine V: Hematology & Oncology, Medical University of Innsbruck, Innsbruck, Austria
| | - Andrea Brunner
- Institute of Pathology, Neuropathology and Molecular Pathology, Medical University of Innsbruck, Innsbruck, Austria
| | - Bettina Zelger
- Institute of Pathology, Neuropathology and Molecular Pathology, Medical University of Innsbruck, Innsbruck, Austria
| | | | - Roland Stalder
- Institute of Mineralogy and Petrography, Leopold-Franzens University Innsbruck, Innsbruck, Austria
| | - Christian W Huck
- Institute of Analytical Chemistry and Radiochemistry, Innsbruck, Austria
| | - Wolfgang Willenbacher
- Internal Medicine V: Hematology & Oncology, Medical University of Innsbruck, Innsbruck, Austria
- Oncotyrol, Center for personalized Cancer Medicine, Innsbruck, Austria
| | - Johannes D Pallua
- Institute of Pathology, Neuropathology and Molecular Pathology, Medical University of Innsbruck, Innsbruck, Austria
- University Hospital for Orthopedics and Traumatology, Medical University of Innsbruck, Innsbruck, Austria
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5
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Pallua JD, Unterberger SH, Pallua AF, Pfaller K, Pallua AK, Putzer D, Pöder R, Kirchmair M. Tissue characterization of the medical fungus Hericium coralloides by focus-variation microscopy. Mycologia 2021; 113:868-875. [PMID: 34125010 DOI: 10.1080/00275514.2021.1922244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
In this study, the potential of focus-variation microscopic imaging was evaluated in a study of morphological patterns of the potential medicinal fungus Hericium coralloides (Basidiomycota). We created three-dimensional reconstructions and visualizations using the imaging technique on a fresh H. coralloides basidioma. The aim was to approximate the spore dispersal efficiency of this basidiomata type regarding the investment of tissue biomass and its reproductive output (production of basidiospores). Results were correlated with published data gained from magnetic resonance imaging and micro-computed tomography. It is demonstrated that focus-variation microscopic imaging results in a more distinct picture of the morphology of the edible and potentially medicinal H. coralloides basidiomata. However, a direct measurement of spore production was not possible. Spore production could only be estimated in combination with a mathematical model because the surface was not directly measurable due to the cellular heterogeneity. However, focus-variation microscopic imaging allows a better and faster estimation of spore production compared with the published methods. Furthermore, it was found that a scanning resolution of 5× is sufficient for determining the fungal surface precisely because at a higher resolution artifacts occur, resulting in adulteration of the image.
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Affiliation(s)
- J D Pallua
- University Hospital for Orthopedics and Traumatology, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria.,Institute of Legal Medicine, Medical University of Innsbruck, Müllerstraße 44, 6020 Innsbruck, Austria.,Institute of Microbiology, Leopold Franzens University Innsbruck, Technikerstraße 25, 6020 Innsbruck, Austria
| | - S H Unterberger
- Unit for Material Technology, Leopold Franzens University Innsbruck, Technikerstraße 13, 6020 Innsbruck, Austria
| | - A F Pallua
- Section for Clinical Neurobiology, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria
| | - K Pfaller
- Section for Histology and Embryology, Medical University of Innsbruck, Müllerstraße 59, 6020 Innsbruck, Austria
| | | | - D Putzer
- University Hospital for Orthopedics and Traumatology, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria
| | - R Pöder
- Institute of Microbiology, Leopold Franzens University Innsbruck, Technikerstraße 25, 6020 Innsbruck, Austria
| | - M Kirchmair
- Institute of Microbiology, Leopold Franzens University Innsbruck, Technikerstraße 25, 6020 Innsbruck, Austria
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6
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Wöss C, Unterberger SH, Degenhart G, Akolkar A, Traxl R, Kuhn V, Schirmer M, Pallua AK, Tappert R, Pallua JD. Comparison of structure and composition of a fossil Champsosaurus vertebra with modern Crocodylidae vertebrae: A multi-instrumental approach. J Mech Behav Biomed Mater 2020; 104:103668. [PMID: 32174426 DOI: 10.1016/j.jmbbm.2020.103668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Revised: 01/29/2020] [Accepted: 02/01/2020] [Indexed: 11/30/2022]
Abstract
Information on the adaptation of bone structures during evolution is rare since histological data are limited. Micro- and nano-computed tomography of a fossilized vertebra from Champsosaurus sp., which has an estimated age of 70-73 million years, revealed lower porosity and higher bone density compared to modern Crocodylidae vertebrae. Mid-infrared reflectance and energy dispersive X-ray mapping excluded a petrification process, and demonstrated a typical carbonate apatite distribution, confirming histology in light- and electron microscopy of the preserved vertebra. As a consequence of this evolutionary process, the two vertebrae of modern Crocodylidae show reduced overall stiffness in the finite element analysis simulation compared to the fossilized Champsosaurus sp. vertebra, with predominant stiffness along the longitudinal z-axes.
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Affiliation(s)
- C Wöss
- Institute of Legal Medicine, Medical University of Innsbruck, Müllerstraße 44, 6020, Innsbruck, Austria
| | - S H Unterberger
- Unit for Material Technology, University of Innsbruck, Technikerstraße 13, 6020, Innsbruck, Austria
| | - G Degenhart
- Department of Radiology, Medical University of Innsbruck, Anichstraße 35, 6020, Innsbruck, Austria
| | - A Akolkar
- Illwerke vkw Professorship for Energy Efficiency, Vorarlberg University of Applied Sciences, Hochschulstraße 1, 6850, Dornbirn, Austria; Josef Ressel Center for Applied Computational Science in Energy, Finance, and Logistics, Hochschulstraße 1, 6850, Dornbirn, Austria
| | - R Traxl
- Unit for Material Technology, University of Innsbruck, Technikerstraße 13, 6020, Innsbruck, Austria
| | - V Kuhn
- Department of Traumatology, Medical University of Innsbruck, Anichstraße 35, 6020, Innsbruck, Austria
| | - M Schirmer
- Department of Internal Medicine, Clinic II, Medical University of Innsbruck, Anichstrasse 35, 6020, Innsbruck, Austria
| | - A K Pallua
- Former Institute for Computed Tomography-Neuro CT, Medical University of Innsbruck, Anichstraße 35, 6020, Innsbruck, Austria
| | - R Tappert
- Hyperspectral Intelligence Inc., Box 851, Gibsons, British Columbia, V0N 1V0, Canada
| | - J D Pallua
- Institute of Legal Medicine, Medical University of Innsbruck, Müllerstraße 44, 6020, Innsbruck, Austria; Institute of Pathology, Neuropathology and Molecular Pathology, Medical University of Innsbruck, Müllerstraße 44, 6020, Innsbruck, Austria.
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7
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Pallua JD, Brunner A, Zelger B, Stalder R, Unterberger SH, Schirmer M, Tappert MC. Clinical infrared microscopic imaging: An overview. Pathol Res Pract 2018; 214:1532-1538. [PMID: 30220435 DOI: 10.1016/j.prp.2018.08.026] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Revised: 08/22/2018] [Accepted: 08/26/2018] [Indexed: 11/16/2022]
Abstract
New developments in Mid-infrared microscopic imaging instrumentation and data analysis have turned this method into a conventional technique. This imaging method offers a global analysis of samples, with a resolution close to the cellular level enabling the acquisition of local molecular expression profiles. It is possible to get chemo-morphological information about the tissue status, which represents an essential benefit for future analytical interpretation of pathological changes of tissue. In this review, we give an overview of Mid-infrared microscopic imaging and its applications in clinical research.
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Affiliation(s)
- J D Pallua
- Department of Pathology, Medical University of Innsbruck, Müllerstraße 44, 6020, Innsbruck, Austria; Institute of Legal Medicine, Medical University of Innsbruck, Müllerstraße 44, 6020, Innsbruck, Austria.
| | - A Brunner
- Department of Pathology, Medical University of Innsbruck, Müllerstraße 44, 6020, Innsbruck, Austria
| | - B Zelger
- Department of Pathology, Medical University of Innsbruck, Müllerstraße 44, 6020, Innsbruck, Austria
| | - R Stalder
- Institute of Mineralogy and Petrography, Leopold-Franzens University Innsbruck, Innrain 52, 6020, Innsbruck, Austria
| | - S H Unterberger
- Material-Technology, Leopold-Franzens University Innsbruck, Technikerstraße 13, 6020, Innsbruck, Austria
| | - M Schirmer
- Department of Internal Medicine, Clinic II, Medical University of Innsbruck, Anichstrasse 35, 6020, Innsbruck, Austria
| | - M C Tappert
- Hyperspectral Intelligence Inc., Box 851, V0N 1V0, Gibsons, Canada
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8
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Rohm S, Knoflach C, Nachbauer W, Hasler M, Kaserer L, van Putten J, Unterberger SH, Lackner R. Effect of Different Bearing Ratios on the Friction between Ultrahigh Molecular Weight Polyethylene Ski Bases and Snow. ACS Appl Mater Interfaces 2016; 8:12552-12557. [PMID: 27115349 DOI: 10.1021/acsami.6b02651] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The purpose of this study was to analyze the effect of surfaces with different bearing ratios, but similar roughness heights, on the friction between ultrahigh molecular weight polyethylene (UHMWPE) and snow. On a linear tribometer positioned inside a cold chamber, the different samples were tested over a wide range of velocities and snow temperatures. The surface roughness was measured with a focus variation microscope and analyzed using the bearing ratio curve and its parameters. The surface energy was investigated by measuring the contact angles of a polar (water) and nonpolar (diiodmethane) liquid. The friction tests showed that the bearing ratio had a major effect on the friction between UHMWPE and snow. For temperatures close to the melting point a surface with wide grooves and narrow plateaus (nonbearing surface) performed well. For cold conditions, the friction was less for a surface with narrow grooves and wide plateaus (bearing surface). Interpretations of the results are given on the basis of mixed friction, with lubricated friction being dominant at higher snow temperatures and solid-solid interaction at lower ones.
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Affiliation(s)
- Sebastian Rohm
- Department of Sport Science, University of Innsbruck , Fuerstenweg 185, 6020 Innsbruck, Austria
| | - Christoph Knoflach
- Department of Sport Science, University of Innsbruck , Fuerstenweg 185, 6020 Innsbruck, Austria
| | - Werner Nachbauer
- Department of Sport Science, University of Innsbruck , Fuerstenweg 185, 6020 Innsbruck, Austria
| | - Michael Hasler
- Centre of Technology of Ski and Alpine Sports, Fuerstenweg 185, 6020 Innsbruck, Austria
| | - Lukas Kaserer
- Centre of Technology of Ski and Alpine Sports, Fuerstenweg 185, 6020 Innsbruck, Austria
| | - Joost van Putten
- Centre of Technology of Ski and Alpine Sports, Fuerstenweg 185, 6020 Innsbruck, Austria
| | - Seraphin H Unterberger
- Department of Material Technology, University of Innsbruck , Technikerstrasse 13, 6020 Innsbruck, Austria
| | - Roman Lackner
- Department of Material Technology, University of Innsbruck , Technikerstrasse 13, 6020 Innsbruck, Austria
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9
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Longato S, Wöss C, Hatzer-Grubwieser P, Bauer C, Parson W, Unterberger SH, Kuhn V, Pemberger N, Pallua AK, Recheis W, Lackner R, Stalder R, Pallua JD. Post-mortem interval estimation of human skeletal remains by micro-computed tomography, mid-infrared microscopic imaging and energy dispersive X-ray mapping. Anal Methods 2015; 7:2917-2927. [PMID: 25878731 PMCID: PMC4383336 DOI: 10.1039/c4ay02943g] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/11/2014] [Accepted: 02/04/2015] [Indexed: 06/04/2023]
Abstract
In this study different state-of-the-art visualization methods such as micro-computed tomography (micro-CT), mid-infrared (MIR) microscopic imaging and energy dispersive X-ray (EDS) mapping were evaluated to study human skeletal remains for the determination of the post-mortem interval (PMI). PMI specific features were identified and visualized by overlaying molecular imaging data and morphological tissue structures generated by radiological techniques and microscopic images gained from confocal microscopy (Infinite Focus (IFM)). In this way, a more distinct picture concerning processes during the PMI as well as a more realistic approximation of the PMI were achieved. It could be demonstrated that the gained result in combination with multivariate data analysis can be used to predict the Ca/C ratio and bone volume (BV) over total volume (TV) for PMI estimation. Statistical limitation of this study is the small sample size, and future work will be based on more specimens to develop a screening tool for PMI based on the outcome of this multidimensional approach.
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Affiliation(s)
- S Longato
- Institute of Legal Medicine , Medical University of Innsbruck , Müllerstraße 44 , 6020 Innsbruck , Austria .
| | - C Wöss
- Institute of Legal Medicine , Medical University of Innsbruck , Müllerstraße 44 , 6020 Innsbruck , Austria .
| | - P Hatzer-Grubwieser
- Institute of Legal Medicine , Medical University of Innsbruck , Müllerstraße 44 , 6020 Innsbruck , Austria .
| | - C Bauer
- Institute of Legal Medicine , Medical University of Innsbruck , Müllerstraße 44 , 6020 Innsbruck , Austria . ; Department of Internal Medicine IV (Nephrology and Hypertension) , Medical University of Innsbruck , Anichstraße 35 , 6020 Innsbruck , Austria
| | - W Parson
- Institute of Legal Medicine , Medical University of Innsbruck , Müllerstraße 44 , 6020 Innsbruck , Austria . ; Penn State Eberly College of Science , University Park , PA , USA
| | - S H Unterberger
- Material-Technology , Leopold-Franzens University Innsbruck , Technikerstraße 13 , 6020 Innsbruck , Austria
| | - V Kuhn
- Department of Traumatology , Medical University of Innsbruck , Anichstraße 35 , 6020 Innsbruck , Austria
| | - N Pemberger
- Department of Pharmaceutical Technology , Institute of Pharmacy , Leopold Franzens University of Innsbruck , Innrain 52c , 6020 Innsbruck , Austria
| | - Anton K Pallua
- Former Institute for Computed Tomography-Neuro CT , Medical University of Innsbruck , Anichstraße 35 , 6020 Innsbruck , Austria
| | - W Recheis
- Department of Radiology , Medical University of Innsbruck , Anichstraße 35 , 6020 Innsbruck , Austria
| | - R Lackner
- Material-Technology , Leopold-Franzens University Innsbruck , Technikerstraße 13 , 6020 Innsbruck , Austria
| | - R Stalder
- Institute of Mineralogy and Petrography , Leopold-Franzens University Innsbruck , Innrain 52 , 6020 Innsbruck , Austria
| | - J D Pallua
- Institute of Legal Medicine , Medical University of Innsbruck , Müllerstraße 44 , 6020 Innsbruck , Austria .
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