Figure 4. Surface-rendered 3-D VIBE image reveals right renal cell carcinoma with extension into the IVC. |
3-D Vibe
Volumetric interpolated breath-hold examination (3-D VIBE) imaging was initially described by Rofsky et al.16 This sequence is also a 3-D gradient-recalled-echo sequence similar to that of a 3-D sequence used for CEMRA, with two main differences. The echo read-out in the KY direction for a VIBE sequence is symmetric, in contrast to an asymmetric echo for a dedicated MRA sequence. In addition, the flip angle is reduced to 12° to 15°. The purpose of these two changes is to improve the signal from the background tissue structures. This technique can be applied in the evaluation of the abdomen and pelvis and used in evaluating the solid organs while simultaneously acquiring vascular information
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