Optimal scan parameters of MRCP using HASTE
Nishio, H.; Morimoto, A.; Shimoyashiki, Y.
Nihon Rinsho. Japanese Journal of Clinical Medicine 56(11): 2803-2807
1998
ISSN/ISBN: 0047-1852 PMID: 9847601 Document Number: 490861
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.