ELECTRONIC POSTER - ismrm

Laboratory, GE Healthcare, Tokyo, Japan; 4 Applied Science Laboratory, GE Healthcare, Waukesha, WI, United
States
This work presents validation of an inflow-enhanced, inversion-recovery (IR) balanced steady state free precession (bSSFP) based
non-contrast-enhanced MRA (NCE-MRA) for assessment of renal arteries at 3T in patients with suspected renal artery stenosis or
with a history of renal artery transplant. NCE-MRA with inflow-enhanced IR bSSFP produced consistent results and demonstrated
moderate agreement with CE-MRA for both readers and strong inter-observer agreement for grading renal artery stenosis >50%.
Thursday 13:30-15:30 Computer 41
13:30 3769. Time-SLIP Versus DSA in Patients with Renal Artery Stenosis
Isabelle Parienty 1 , Faiza Admiraal-Behloul 2 , Francis Jouniaux 1 , Michel Piotin 3 , Guy
Rostoker 3
1 Centre d'Imagerie du Bois de Verrière, Antony, France; 2 MRI, Toshiba Medical Systems Europe, Zoetermeer,
Netherlands; 3 Nephrology, Centre Hospitalier Claude Galien, Paris, France
The purpose of this study was to compare the findings in non-contrast enhanced MRA using the Time Spatial Labeling Inversion
Pulse (Time-SLIP) technique to those of Digital Subtraction Angiography (DSA) in patients with significant renal artery stenosis
(>60%, or >50% with post stenotic dilation).
14:00 3770. Respiratory Rate Regulation for Optimal Time-SLIP Imaging of Renal Arteries
Francis Jouniaux 1 , Isabelle Parienty 1 , Faiza Admiraal-Behloul 2
1 Centre d'Imagerie du Bois de Verrière, Antony, France; 2 MRI, Toshiba Medical Systems Europe, Zoetermeer,
Netherlands
Respiratory gated non contrast enhanced MR angiography using Time-Spatial inversion labeling pulse (Time-SLIP) is a well
established technique at our institution for the exploration of renal arteries. Since 2007, we scanned more than 450 patients with age
ranging for 18 to 92 year old. Patients with fast and/or irregular respiration rates (RR) can be very challenging to image. Most of the
difficult patients are old (80+), or have a cardiac disease and/or a respiratory disease. A breath hold of more than 16s is intolerable for
most of these patients. We describe how regulating the respiratory rate can significantly improve the image quality and the success
rate of Time-SLIP.
14:30 3771. Assessment of Non-Contrast Angiography in Diabetic Patients
Erin Jane Kelly 1 , JoEllyn L. L. Stolinski 2 , James Jelinek 2
1 Magnetic Resonance, Toshiba America Medical Systems, Tustin, CA, United States; 2 Radiology, Washington
Hospital Center, Washington, D.C., United States
Diabetes is highly associated with renal failure and peripheral artery disease. In light of the association between MRI contrast media
and the onset of NSF/NSD, it is increasingly important to replace CE-MRA with non-contrast angiographic imaging techniques, such
as Fresh Blood Imaging and Time-SLIP. In this study, diabetic patients referred for and MRA were imaged with FBI and Time-SLIP
for peripheral run-offs and renal angiography. Image Quality and Diagnostic Confidence scores indicate that FBI and Time-SLIP are
both safe and effective alternatives to CE-MRA in this patient group.
15:00 3772. An MRI Examination for Evaluation of Aortic Dissection Using a Blood Pool Agent
Rachel Clough 1 , Tarique Hussain 1 , Sergio Uribe 1 , Peter Taylor 2 , Reza Razavi 1 , Tobias
Schaeffter 1 , Matthew Waltham 2
1 Division of Imaging Sciences, King's College London, London, United Kingdom; 2 Guy’s and St Thomas’ NHS
Foundation Trust, St Thomas' Hospital, London, United Kingdom
An MRI examination for evaluation of aortic dissection using a blood-pool agent is presented. The aims of this study were to
investigate the use of direct thrombus MRI and quantitative flow analysis for the determination of false lumen thrombus volumes in
patients with Type B aortic dissection. It is shown that blood-pool imaging together with direct thrombus MRI allows assessment of
aortic anatomy and more accurate quantification of false lumen thrombosis compared with CT. Current clinical trials using false
lumen thrombosis as a primary endpoint should consider multi-parametric MRI as the preferred diagnostic tool.
MRA: Preclinical Technical Developments
Hall B Monday 14:00-16:00 Computer 42
14:00 3773. Magnetic Resonance Venography with a Blood Pool Contrast Medium
Teik Choon See 1 , Andrew Winterbottom 1 , Edmund Soh 2 , Ilse Joubert 1 , Martin Graves 1 ,
David Lomas 1
1 Radiology, University of Cambridge and Addenbrooke's Hospital, Cambridge, Cambridgeshire, United
Kingdom; 2 Singapore General Hospital, Singapore
Our prospective clinical trial authorised study aims to assess MR venography of the neck and thoracic central veinous system using
Vasovist® (gadofosveset trisodium, Schering), a blood pool contrast agent, for first pass (FP) and steady state (SS) imaging. Images
are assessed independently for image quality, artefacts, stenosis, and thrombosis. Sixteen participants recruited to date and 144 venous
segments assessed. The result shows very favourable SS imaging quality compared to FP (although not quite statistically significant)