[Optimal scan parameters of MRCP using HASTE].
For improving the image of fine structures on MRCP, optimal scan parameters were assessed by water-filled phantom using HASTE sequence. Spatial resolution and Contrast-to-Noise Ratio (CNR) were measured at various FOVs and slice thicknesses with a body array coil. High spatial resolution was provided at less than 25 cm in FOV, and narrow phantom under 1 mm in diameter was obscured at more than 30 cm in FOV. Highest CNR was provided at 3 mm slice thickness on a 1.5 T unit, and at 4 mm slice thickness on a 1.0 T unit. Narrow phantom under 1 mm in diameter was depicted clearly on a 1.5 T unit, but irregularly on a 1.0 T unit. Taking required spatial resolution and CNR into consideration, we should determine optimal FOV and slice thickness for the assessment of anatomic details on MRCP.
Nishio
H
H
Dept. of Radiology, Osaka City University Medical School.
Morimoto
A
A
Shimoyashiki
Y
Y
D001659:Biliary Tract / Q000473:pathology; D006801:Humans; D007089:Image Enhancement / Q000379:methods*; D008279:Magnetic Resonance Imaging / Q000379:methods*; D010183:Pancreatic Ducts / Q000473:pathology; D019047:Phantoms, Imaging