Comparison of dual- and single-source dual-energy CT in head and neck imaging

Beitrag in einer Fachzeitschrift


Details zur Publikation

Autorinnen und Autoren: May M, Wiesmüller M, Heiß R, Brand M, Brügel J, Uder M, Wüst W
Zeitschrift: European Radiology
Jahr der Veröffentlichung: 2019
Band: 29
Heftnummer: 8
Seitenbereich: 4207-4214
ISSN: 0938-7994


Abstract

Objectives: The aim of this study was to compare image quality of single-source dual-energy CT (SS-DECT) with third-generation dual-source dual-energy CT (DS-DECT) in head and neck cancer. Materials and methods: One hundred two patients with histologically proven head and neck cancer were prospectively randomized to undergo radiation dose-matched SS-DECT (n = 51, 120 kV, split-filter technique, 384 ref. mAs) or DS-DECT (n = 51, 80/Sn150 kV, tube A 100/tube B 67 ref. mAs). Inline default images (DI) and virtual monoenergetic images (VMI) for two different low energies (40 and 60 keV) were reconstructed. Objective image quality was evaluated as dose-normalized contrast to noise ratio (CNRD), and subjective image quality was rated on a 5-point Likert scale. Results: In both groups, highest CNRD values for vessel and tumor attenuation were obtained at 40 keV. DS-DECT was significantly better than SS-DECT regarding vessel and tumor attenuation. Overall subjective image quality in the SS-DECT group was highest on the DI followed by 40 keV and 60 keV. In the DS-DECT group, subjective image quality was highest at 40 keV followed by 60 keV and the DI. Forty kiloelectron volts and 60 keV were significantly better in the DS-DECT compared to the SS-DECT group (both p < 0.01). Conclusions: In split-filter SS-DECT as well as in DS-DECT, highest overall image quality in head and neck imaging can be obtained with a combination of DI and low keV reconstructions. DS-DECT is superior to split-filter SS-DECT in terms of subjective image quality and vessel and tumor attenuation. Key Points: • Image quality was diagnostic with both dual-energy techniques; however, the dual-source technique delivered significantly better results. • Highest overall image quality in head and neck imaging can be obtained with a combination of default images and low keV reconstructions with both dual-energy techniques. • The results of this study may have relevance for the decision-making process regarding replacement of CT scanners and focused patient examination considering image quality and subsequent therapeutic decision-making.


FAU-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

Brügel, Joscha
Medizinische Fakultät
Heiß, Rafael Dr. med.
Radiologisches Institut
May, Matthias PD Dr.
Radiologisches Institut
Uder, Michael Prof. Dr.
Lehrstuhl für Diagnostische Radiologie
Wiesmüller, Marco
Lehrstuhl für Klinische Nuklearmedizin
Wüst, Wolfgang PD Dr.
Medizinische Fakultät


Zitierweisen

APA:
May, M., Wiesmüller, M., Heiß, R., Brand, M., Brügel, J., Uder, M., & Wüst, W. (2019). Comparison of dual- and single-source dual-energy CT in head and neck imaging. European Radiology, 29(8), 4207-4214. https://dx.doi.org/10.1007/s00330-018-5762-y

MLA:
May, Matthias, et al. "Comparison of dual- and single-source dual-energy CT in head and neck imaging." European Radiology 29.8 (2019): 4207-4214.

BibTeX: 

Zuletzt aktualisiert 2019-22-07 um 12:23