Clinical routine use of virtual monochromatic datasets based on spectral CT in patients with hypervascularized abdominal tumors - evaluation of effectiveness and efficiency.
Abdominal Neoplasms
/ blood supply
Aged
Carcinoma, Hepatocellular
/ blood supply
Carcinoma, Neuroendocrine
/ blood supply
Carcinoma, Renal Cell
/ blood supply
Female
Humans
Liver
/ blood supply
Liver Neoplasms
/ blood supply
Male
Middle Aged
Neovascularization, Pathologic
/ diagnostic imaging
Reproducibility of Results
Sensitivity and Specificity
Signal-To-Noise Ratio
Stomach
/ blood supply
Tomography, X-Ray Computed
/ methods
Abdomen
CT
computed tomography
dual energy
image reconstruction
radiation dosage
reader workflow optimization
Journal
Acta radiologica (Stockholm, Sweden : 1987)
ISSN: 1600-0455
Titre abrégé: Acta Radiol
Pays: England
ID NLM: 8706123
Informations de publication
Date de publication:
Apr 2019
Apr 2019
Historique:
pubmed:
29
6
2018
medline:
9
4
2019
entrez:
29
6
2018
Statut:
ppublish
Résumé
Virtual monochromatic images (VMI) generated using spectral computed tomography (CT) are promising recently available tools to improve diagnostic performance in oncologic patients. To investigate if virtual monochromatic datasets are suitable for clinical routine use in patients with hypervascularized abdominal tumors. A total of 41 patients with hypervascularized hepatocellular carcinoma (HCC), renal cell carcinoma (RCC), or neuroendocrine tumors (NET) were enrolled in the study; 451 CT series were analyzed. In an intra-individual study design, virtual monochromatic datasets of the arterial phase of each scan were computed. Image quality was assessed objectively by determining signal-to-noise ratio (SNR) and contrast-to-noise ratios (CNR) and subjectively by using five-point Likert-scales. The volume CT dose index (CTDI Intra-individual comparison of the spectral mode in the arterial phase with the portal venous phase revealed no significant increase in the applied dose. SNR, CNR In clinical practice, the use of low energy VMI improved diagnostic confidence without a significant increase in dose. The main disadvantage is a decrease in efficiency due to longer reading times.
Sections du résumé
BACKGROUND
BACKGROUND
Virtual monochromatic images (VMI) generated using spectral computed tomography (CT) are promising recently available tools to improve diagnostic performance in oncologic patients.
PURPOSE
OBJECTIVE
To investigate if virtual monochromatic datasets are suitable for clinical routine use in patients with hypervascularized abdominal tumors.
MATERIAL AND METHODS
METHODS
A total of 41 patients with hypervascularized hepatocellular carcinoma (HCC), renal cell carcinoma (RCC), or neuroendocrine tumors (NET) were enrolled in the study; 451 CT series were analyzed. In an intra-individual study design, virtual monochromatic datasets of the arterial phase of each scan were computed. Image quality was assessed objectively by determining signal-to-noise ratio (SNR) and contrast-to-noise ratios (CNR) and subjectively by using five-point Likert-scales. The volume CT dose index (CTDI
RESULTS
RESULTS
Intra-individual comparison of the spectral mode in the arterial phase with the portal venous phase revealed no significant increase in the applied dose. SNR, CNR
CONCLUSION
CONCLUSIONS
In clinical practice, the use of low energy VMI improved diagnostic confidence without a significant increase in dose. The main disadvantage is a decrease in efficiency due to longer reading times.
Identifiants
pubmed: 29950111
doi: 10.1177/0284185118786077
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM