Type:
Educational Exhibit
Keywords:
Trauma, Arteriovenous malformations, Aneurysms, Computer Applications-Virtual imaging, Computer Applications-3D, MR-Angiography, MR, Vascular, Kidney, Interventional vascular
Authors:
T. Tajima1, M. Shinohara2, T. Yamamoto 2, S. Sakai1; 1Shinjuku-ku, Tokyo/JP, 2Otawara/JP
DOI:
10.1594/ecr2013/C-1143
Background
The association between gadolinium-based contrast agents and nephrogenic systemic fibrosis (NSF) has helped propel non-contrast angiography techniques to center stage in the MR evaluation of vascular disease.
From the viewpoints of preservation of renal function,
clinicians tend to avoid using contrast medium also in the CT studies of patients with renal diseases for the pre-interventional evaluation.
Our institute,
Tokyo Women’s Medical University (TWMU) has a kidney center established in 1979 in which a great number of patients with renal diseases are treated by renal transplantation,
dialysis and vascular interventions in the urological system.
Time-spatial labeling inversion pulse (Time-SLIP),
which is a technique of non-contrast enhanced magnetic resonance angiography (NC-MRA),
is widely used in various diseases,
regions and situations,
especially in individuals with intrinsic renal diseases although other NC-MRA sequences such as balanced steady-state free precession,
phase contrast,
and time-of-flight sequences are currently being revisited,
improved or under development.
In our institute,
NC-MRA with Time-SLIP is positively used,
especially as evaluations before interventional radiology (IR) of renovascular diseases patients.
"4D Time-SLIP" is a new generation image developed from two-dimensional or three-dimensional images with Time-SLIP,
that can be created using the routine NC-MRA images of Time-SLIP.
In this exhibit,
we will describe the usefulness and challenges of 4D Time-SLIP.
The scanning techniques,
imaging reconstruction methods,
indications,
advantages and limitations in 4D Time-SLIP compared with the 2D or 3D techniques were presented.