The Usefulness of High-Resolution Three-Dimensional Dynamic MR Imaging with Sensitivity Encoding for Evaluating Extrahepatic Bile Duct Cancer
Journal of the Korean Radiological Society
;
: 73-81, 2006.
Article
Dans Anglais
| WPRIM
| ID: wpr-222084
ABSTRACT
PURPOSE:
We assessed the usefulness of high-resolution 3D dynamic MR imaging with sensitivity encoding (mSENSE) for evaluating bile duct cancer. MATERIALS ANDMETHODS:
Twenty-three patients with extrahepatic bile duct cancer underwent multiphasic 3D GRE MRI, including two delayed phases without and with mSENSE. The first delayed phases were obtained with volumetric interpolated breath-hold imaging (VIBE) and then the higher in-plane resolution images (320x168) were obtained using mSENSE. The two delayed phase images were compared quantitatively by measuring the signal-to-noise ratio (SNR) of liver and tumor, the liver-visceral fat contrast and the tumor-visceral fat contrast-to-noise ratio (CNR); the two delayed phase images were compared qualitatively by evaluating the sharpness of the hepatic vessels and bile duct, the artifacts and the conspicuity of bile duct cancer.RESULTS:
The quantitative results with mSENSE image were significantly better than those with conventional VIBE. Though the clarity of the intrahepatic vessels and the intrahepatic bile duct, and the artifacts did not differ significantly between the two images (p>0.05), the clarity of the extrahepatic vessels, the extrahepatic bile duct and the bile duct cancer were better on the mSENSE image than on the VIBE (p<0.05).CONCLUSION:
The higher in-plane resolution 3D GRE image obtained with mSENSE was of a better image quality than the conventional VIBE images. This technique shows promise for use as a comprehensive exam for assessing bile duct cancer.
Texte intégral:
Disponible
Indice:
WPRIM (Pacifique occidental)
Sujet Principal:
Tumeurs des canaux biliaires
/
Conduits biliaires
/
Conduits biliaires intrahépatiques
/
Imagerie par résonance magnétique
/
Artéfacts
/
Conduits biliaires extrahépatiques
/
Rapport signal-bruit
/
Foie
Type d'étude:
Etude diagnostique
Limites du sujet:
Humains
langue:
Anglais
Texte intégral:
Journal of the Korean Radiological Society
Année:
2006
Type:
Article
Documents relatifs à ce sujet
MEDLINE
...
LILACS
LIS