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Title of Journal: Neuroradiology

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Abbravation: Neuroradiology

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Springer Berlin Heidelberg

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DOI

10.1007/s11217-011-9224-0

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1432-1920

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Clinical evaluation of a dose monitoring software

Authors: Nika Guberina Saravanabavaan Suntharalingam Kai Naßenstein Michael Forsting Jens Theysohn Axel Wetter Adrian Ringelstein
Publish Date: 2016/07/20
Volume: 58, Issue: 10, Pages: 955-959
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Abstract

In cooperation with the Federal Office for Radiation Protection Neuherberg Germany phantom measurements were performed with thermoluminescence dosimeters TLD LiFMgTi using cranial CT protocols I CT angiography II unenhanced cranial CT scans with gantry angulation at a single and III without gantry angulation at a dual source CT scanner Eye lens doses calculated by the dose monitoring tool based on MCS and assessed with TLDs were comparedEye lens doses are summarized as follows I CT angiography a MCS 7 mSv b TLD 5 mSv II unenhanced cranial CT scan with gantry angulation c MCS 45 mSv d TLD 5 mSv III unenhanced cranial CT scan without gantry angulation e MCS 38 mSv f TLD 35 mSv Intermodality comparison shows an inaccurate calculation of eye lens doses in unenhanced cranial CT protocols at the single source CT scanner due to the disregard of gantry angulation On the contrary the dose monitoring tool showed an accurate calculation of eye lens doses at the dual source CT scanner without gantry angulation and for CT angiography examinationsThe dose monitoring software tool based on MCS gave accurate estimates of eye lens doses in cranial CT protocols However knowledge of protocol and software specific influences is crucial for correct assessment of eye lens doses in routine clinical use

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