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  1. Book ; Online ; Thesis: Ganzkörper-CT Untersuchungen bei Patienten nach Polytrauma – Untersuchungen zur Strahlendosis und Potentiale zur Dosisreduktion

    Harrieder, Andreas [Verfasser] / Linsenmaier, Ulrich [Akademischer Betreuer]

    2022  

    Author's details Andreas Harrieder ; Betreuer: Ulrich Linsenmaier
    Keywords Medizin, Gesundheit ; Medicine, Health
    Subject code sg610
    Language German
    Publisher Universitätsbibliothek der Ludwig-Maximilians-Universität
    Publishing place München
    Document type Book ; Online ; Thesis
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  2. Article ; Online: Dose reduction in 64-row whole-body CT in multiple trauma: an optimized CT protocol with iterative image reconstruction on a gemstone-based scintillator.

    Geyer, Lucas L / Körner, Markus / Harrieder, Andreas / Mueck, Fabian G / Deak, Zsuzsanna / Wirth, Stefan / Linsenmaier, Ulrich

    The British journal of radiology

    2016  Volume 89, Issue 1061, Page(s) 20160003

    Abstract: Objective: Evaluation of potential dose savings by implementing adaptive statistical iterative reconstruction (ASiR) on a gemstone-based scintillator in a clinical 64-row whole-body CT (WBCT) protocol after multiple trauma.: Methods: Dose reports of ... ...

    Abstract Objective: Evaluation of potential dose savings by implementing adaptive statistical iterative reconstruction (ASiR) on a gemstone-based scintillator in a clinical 64-row whole-body CT (WBCT) protocol after multiple trauma.
    Methods: Dose reports of 152 WBCT scans were analysed for two 64-row multidetector CT scanners (Scanners A and B); the main scanning parameters were kept constant. ASiR and a gemstone-based scintillator were used in Scanner B, and the noise index was adjusted (head: 5.2 vs 6.0; thorax/abdomen: 29.0 vs 46.0). The scan length, CT dose index (CTDI) and dose-length product (DLP) were analysed. The estimated mean effective dose was calculated using normalized conversion factors. Student's t-test was used for statistics.
    Results: Both the mean CTDI (mGy) (Scanner A: 53.8 ± 2.0, 10.3 ± 2.5, 14.4 ± 3.7; Scanner B: 48.7 ± 2.2, 7.1 ± 2.3, 9.1 ± 3.6; p < 0.001, respectively) and the mean DLP (mGy cm) (Scanner A: 1318.9 ± 167.8, 509.3 ± 134.7, 848.8 ± 254.0; Scanner B: 1190.6 ± 172.6, 354.6 ± 128.3, 561.0 ± 246.7; p < 0.001, respectively) for the head, thorax and abdomen were significantly reduced with Scanner B. There was no relevant difference in scan length. The total mean effective dose (mSv) was significantly decreased with Scanner B (24.4 ± 6.0, 17.2 ± 5.8; p < 0.001).
    Conclusion: The implementation of ASiR and a gemstone-based scintillator allows for significant dose savings in a clinical WBCT protocol.
    Advances in knowledge: Recent technical developments can significantly reduce radiation dose of WBCT in multiple trauma. Dose reductions of 10-34% can be achieved.
    MeSH term(s) Adult ; Female ; Humans ; Image Processing, Computer-Assisted/methods ; Male ; Middle Aged ; Multiple Trauma/diagnostic imaging ; Radiation Dosage ; Radiographic Image Interpretation, Computer-Assisted ; Retrospective Studies ; Single-Blind Method ; Tomography Scanners, X-Ray Computed ; Tomography, X-Ray Computed/instrumentation ; Tomography, X-Ray Computed/methods ; Whole Body Imaging/instrumentation ; Whole Body Imaging/methods
    Language English
    Publishing date 2016
    Publishing country England
    Document type Journal Article ; Randomized Controlled Trial ; Research Support, Non-U.S. Gov't
    ZDB-ID 2982-8
    ISSN 1748-880X ; 0007-1285
    ISSN (online) 1748-880X
    ISSN 0007-1285
    DOI 10.1259/bjr.20160003
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