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01-06-2017 | Original Article

Single-energy pediatric chest computed tomography with spectral filtration at 100 kVp: effects on radiation parameters and image quality

Authors: Boris Bodelle, Constanze Fischbach, Christian Booz, Ibrahim Yel, Claudia Frellesen, Moritz Kaup, Martin Beeres, Thomas J. Vogl, Jan-Erik Scholtz

Published in: Pediatric Radiology | Issue 7/2017

Abstract

Background

Most of the applied radiation dose at CT is in the lower photon energy range, which is of limited diagnostic importance.

Objective

To investigate image quality and effects on radiation parameters of 100-kVp spectral filtration single-energy chest CT using a tin-filter at third-generation dual-source CT in comparison to standard 100-kVp chest CT.

Materials and methods

Thirty-three children referred for a non-contrast chest CT performed on a third-generation dual-source CT scanner were examined at 100 kVp with a dedicated tin filter with a tube current–time product resulting in standard protocol dose. We compared resulting images with images from children examined using standard single-source chest CT at 100 kVp. We assessed objective and subjective image quality and compared radiation dose parameters.

Results

Radiation dose was comparable for children 5 years old and younger, and it was moderately decreased for older children when using spectral filtration (P=0.006). Effective tube current increased significantly (P=0.0001) with spectral filtration, up to a factor of 10. Signal-to-noise ratio and image noise were similar for both examination techniques (P≥0.06). Subjective image quality showed no significant differences (P≥0.2).

Conclusion

Using 100-kVp spectral filtration chest CT in children by means of a tube-based tin-filter on a third-generation dual-source CT scanner increases effective tube current up to a factor of 10 to provide similar image quality at equivalent dose compared to standard single-source CT without spectral filtration.

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Title: Single-energy pediatric chest computed tomography with spectral filtration at 100 kVp: effects on radiation parameters and image quality
Authors: Boris Bodelle
Constanze Fischbach
Christian Booz
Ibrahim Yel
Claudia Frellesen
Moritz Kaup
Martin Beeres
Thomas J. Vogl
Jan-Erik Scholtz
Publication date: 01-06-2017
Publisher: Springer Berlin Heidelberg
Published in: Pediatric Radiology / Issue 7/2017
Print ISSN: 0301-0449
Electronic ISSN: 1432-1998
DOI: https://doi.org/10.1007/s00247-017-3813-1

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Single-energy pediatric chest computed tomography with spectral filtration at 100 kVp: effects on radiation parameters and image quality

Abstract

Background

Objective

Materials and methods

Results

Conclusion

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Abstract

Background

Objective

Materials and methods

Results

Conclusion

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