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. Author manuscript; available in PMC: 2014 Jul 14.
Published in final edited form as: Biomed Tech (Berl). 2013 Dec;58(6):565–576. doi: 10.1515/bmt-2012-0062

Figure 5. Helical tubing phantom with maximum intensity projection (MIP) and volume-rendered (VR) PR MPI images was created to compare a slow-moving table scan with 20× faster scanning using shift fields.

Figure 5

We created a helical phantom by wrapping two pieces of 0.8 mm internal diameter (ID), 1.4 mm outer diameter (OD) tubing around an acrylic cylinder. We injected 50 mm Resovist (9:1 deionized water and Resovist). We imaged the phantom using the pulse sequence described in Figure 3. The resulting dataset was maximum intensity projected and volume rendered in Osirix to produce the displayed 3D images. Top: total acquisition time: 39 min; FOV: 6 cm ×6 cm ×12 cm; 60 projections. Bottom: total imaging time: 1.3 min; FOV: 6 cm ×6 cm ×10.4 cm; 40 projections. Top row was adapted from ref. [25]. Note that the image quality and resolution are similar between the two scanning methods; however, a slight warping artifact is present in the faster dataset.