Low-Energy Virtual Monochromatic Dual-Energy Computed Tomography Images for the Evaluation of Head and Neck Squamous Cell Carcinoma: A Study of Tumor Visibility Compared With Single-Energy Computed Tomography and User Acceptance.
J Comput Assist Tomogr
; 41(4): 565-571, 2017.
Article
en En
| MEDLINE
| ID: mdl-28471869
OBJECTIVE: Dual-energy computed tomography (CT) 40-keV virtual monochromatic images (VMIs) have been reported to improve visualization of head and neck squamous cell carcinoma, but a direct comparison to single-energy CT (SECT) is lacking, and there is debate regarding subjective user preference. We compared 40-keV VMIs with SECT and performed a subjective evaluation of their utility and acceptability for clinical use. METHODS: A total of 60 dual-energy CT and 60 SECT scans from 2 different institutions were evaluated. Tumor conspicuity was evaluated objectively using absolute and relative attenuation and subjectively by 3 head and neck specialists and 3 general radiologists. RESULTS: Tumors had significantly higher absolute and relative attenuation on 40-keV VMIs (P < 0.0001). Subjectively, the 40-keV VMIs improved visualization, with substantial (κ, 0.61-0.80) to almost perfect (κ, 0.81-1) interrater agreements. CONCLUSIONS: The 40-keV VMIs improve tumor visibility objectively and subjectively both by head and neck specialists and general radiologists.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Carcinoma de Células Escamosas
/
Interpretación de Imagen Radiográfica Asistida por Computador
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Tomografía Computarizada por Rayos X
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Imagen Radiográfica por Emisión de Doble Fotón
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Neoplasias de Cabeza y Cuello
Tipo de estudio:
Diagnostic_studies
Límite:
Aged
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Aged80
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Female
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Humans
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Male
/
Middle aged
Idioma:
En
Revista:
J Comput Assist Tomogr
Año:
2017
Tipo del documento:
Article
Pais de publicación:
Estados Unidos