publication . Master thesis . 2018

Radiation dose and image quality in CT - Evaluation of how slice thickness, tube current modulation and reconstruction algorithms affect radiation dose and image noise

Guleng, Marte Anette Dunseth;
Open Access English
  • Published: 01 Jan 2018
  • Publisher: NTNU
  • Country: Norway
Abstract
Background: Helse Vest has currently standardized the computed tomography (CT) Thorax/Abdomen/Pelvis protocols in the region. One of the standardized parameters was a reduction of the reconstructed slice thickness from 5 mm to 3 mm. Brooks formula, which describes the relationship between radiation dose, image noise and slice thickness in CT, has been used to estimate the effects of the slice thickness reduction on radiation dose and image noise. Exposure parameters like the tube voltage (kV) and tube current-time product (mAs) are currently not standardized. Aim: The aim of this thesis was to investigate the effects of reducing the reconstructed image slice thi...
Subjects
free text keywords: Lektorutdanning i realfag for trinn 8 -13, Matematikk og fysikk
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Master thesis . 2018
Provider: NTNU Open
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