Comparison of Image Quality of Shoulder CT Arthrography Conducted Using 120 kVp and 140 kVp Protocols
Korean Journal of Radiology
;
: 739-745, 2014.
Artículo
en Inglés
| WPRIM
| ID: wpr-116948
ABSTRACT
OBJECTIVE:
To compare the image quality of shoulder CT arthrography performed using 120 kVp and 140 kVp protocols. MATERIALS ANDMETHODS:
Fifty-four CT examinations were prospectively included. CT scans were performed on each patient at 120 kVp and 140 kVp; other scanning parameters were kept constant. Image qualities were qualitatively and quantitatively compared with respect to noise, contrast, and diagnostic acceptability. Diagnostic acceptabilities were graded using a one to five scale as follows 1, suboptimal; 2, below average; 3, acceptable; 4, above average; and 5, superior. Radiation doses were also compared.RESULTS:
Contrast was better at 120 kVp, but noise was greater. No significant differences were observed between the 120 kVp and 140 kVp protocols in terms of diagnostic acceptability, signal-to-noise ratio, or contrast-to-noise ratio. Lowering tube voltage from 140 kVp to 120 kVp reduced the radiation dose by 33%.CONCLUSION:
The use of 120 kVp during shoulder CT arthrography reduces radiation dose versus 140 kVp without significant loss of image quality.
Texto completo:
Disponible
Índice:
WPRIM (Pacífico Occidental)
Asunto principal:
Dosis de Radiación
/
Hombro
/
Luxación del Hombro
/
Interpretación de Imagen Radiográfica Asistida por Computador
/
Tomografía Computarizada por Rayos X
/
Estudios Prospectivos
/
Medios de Contraste
/
Relación Señal-Ruido
Tipo de estudio:
Guía de Práctica Clínica
/
Estudio observacional
Límite:
Adulto
/
Anciano
/
Femenino
/
Humanos
/
Masculino
Idioma:
Inglés
Revista:
Korean Journal of Radiology
Año:
2014
Tipo del documento:
Artículo
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