Image quality and cancer visibility of T2-weighted magnetic resonance imaging of the prostate at 7 Tesla.
Eur Radiol
; 24(8): 1950-8, 2014 Aug.
Article
en En
| MEDLINE
| ID: mdl-24865699
ABSTRACT
OBJECTIVES:
To assess the image quality of T2-weighted (T2w) magnetic resonance imaging of the prostate and the visibility of prostate cancer at 7 Tesla (T). MATERIALS &METHODS:
Seventeen prostate cancer patients underwent T2w imaging at 7T with only an external transmit/receive array coil. Three radiologists independently scored images for image quality, visibility of anatomical structures, and presence of artefacts. Krippendorff's alpha and weighted kappa statistics were used to assess inter-observer agreement. Visibility of prostate cancer lesions was assessed by directly linking the T2w images to the confirmed location of prostate cancer on histopathology.RESULTS:
T2w imaging at 7T was achievable with 'satisfactory' (3/5) to 'good' (4/5) quality. Visibility of anatomical structures was predominantly scored as 'satisfactory' (3/5) and 'good' (4/5). If artefacts were present, they were mostly motion artefacts and, to a lesser extent, aliasing artefacts and noise. Krippendorff's analysis revealed an α = 0.44 between three readers for the overall image quality scores. Clinically significant cancer lesions in both peripheral zone and transition zone were visible at 7T.CONCLUSION:
T2w imaging with satisfactory to good quality can be routinely acquired, and cancer lesions were visible in patients with prostate cancer at 7T using only an external transmit/receive body array coil. KEY POINTS ⢠Satisfactory to good T2-weighted image quality of the prostate is achievable at 7T. ⢠Periprostatic lipids appear hypo-intense compared to healthy peripheral zone tissue at 7T. ⢠Prostate cancer is visible on T2-weighted MRI at 7T.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Próstata
/
Neoplasias de la Próstata
/
Imagen por Resonancia Magnética
/
Aumento de la Imagen
/
Artefactos
/
Estadificación de Neoplasias
Límite:
Aged
/
Humans
/
Male
/
Middle aged
Idioma:
En
Revista:
Eur Radiol
Asunto de la revista:
RADIOLOGIA
Año:
2014
Tipo del documento:
Article