TRADITIONAL POSTER - ismrm

Poster Sessions
1382. Hemodynamic Assessment of the Splanchnic Arteries with Aneurismal Dilations Using Time-Resolved
Three Dimensional Phase Contrast MRA (4Dflow)
Yasuo Takehara 1 , Haruo Isoda 2 , Shuhei Yamashita 2 , Mika Kamiya 2 , Naoki Unno 3 , Hiroyasu Takeda 1 ,
Masaya Hirano 4 , Marcus T. Alley 5 , Roland Bammer 5 , Takashi Kosugi 6 , Yasuhide Ohkura 6 , Harumi
Sakahara
1 Radiology, Hamamatsu Univ. Hospital, Hamamatsu, Shizuoka, Japan; 2 Radiology, Hamamatsu Univ. School of Medicine,
Hamamatsu, Shizuoka, Japan; 3 Vascular Surgery, Hamamatsu Univ. School of Medicine; 4 GE Healthcare, Hino, Tokyo, Japan;
5 Radiology, Stanford Univ.; 6 R's Tech Co. Ltd.
Combined use of time-resolved 3 dimensional phase contrast MRA (4D-flow) and flow analysis software was useful in planning the catheter and surgical
intervention for the aneurismal dilation of the splanchnic arteries. The method identified the significant alteration in the flow dynamics in splanchnic arteries
mostly due to celiac artery stenosis (73 %). Measured WSS of the segment of aneurismal wall was significantly lower ( < 1.5 Pa) than normal segments,
which may be reflecting that the aneurismal wall is continuously affected by the growing risk of rupture.
1383. Peripheral MRA Using an Interleaved Variable Density Cartesian Acquisition with HYPR
Reconstruction
James H. Holmes 1 , Kang Wang 2 , Reed F. Busse 1 , Christopher J. Francois 3 , Philip J. Beatty 4 , Lauren A.
Keith 2 , Yijing Wu 2 , Scott B. Reeder 3 , Jean H. Brittain 1 , Frank R. Korosec 3
1 Applied Science Laboratory, GE Healthcare, Madison, WI, United States; 2 Medical Physics, University of Wisconsin-Madison,
Madison, WI, United States; 3 Radiology, University of Wisconsin-Madison, Madison, WI, United States; 4 Applied Science
Laboratory, GE Healthcare, Menlo Park, CA
A method combining an interleaved variable density (IVD) Cartesian acquisition with a reconstruction that integrates HYPR and parallel imaging is applied
to peripheral run-off MRA. The method is compared to conventional view sharing in normal volunteers, demonstrating improved spatial resolution and
temporal fidelity. Preliminary clinical results in patients with peripheral vascular disease are also presented.
1384. Quiescent Interval Single Shot MR Angiography
Robert R. Edelman 1 , John Sheehan 1 , Eugene Dunkle 1 , James Carr 2 , Christopher Glielmi 3 , Xiaoming Bi 3 ,
Ioannis Koktzoglou 1
1 Radiology, NorthShore University HealthSystem, Evanston, IL, United States; 2 Northwestern University; 3 Siemens Healthcare
Quiescent interval single shot (QISS) MRA uses an ECG-triggered, fat suppressed, 2D balanced SSFP sequence incorporating slice-selective saturation and
a quiescent interval for maximal inflow enhancement. Following optimization at 1.5 Tesla, a pilot study was performed in patients with peripheral vascular
disease (PVD) using contrast-enhanced MRA as the reference standard. The sensitivity, specificity, positive and negative predictive values of QISS for
significant stenosis or occlusion were 92.2%, 94.9%, 83.9% and 97.7%. In conclusion, QISS provided robust depiction of normal peripheral arterial
anatomy and PVD in less than 10 minutes without the need to tailor the technique for individual patients.
1385. Deep Venous Thrombosis: Diagnostic Value of Non-Contrast-Enhanced MR Venography Using
Electrocardiography-Triggered Three-Dimensional Half-Fourier FSE
Atsushi Ono 1,2 , Kenya Murase 1 , Toshitaka Taniguchi 3 , Osamu Shibutani 4 , Satoru Takata 2 , Yasuyuki
Kobashi 2 , Yusuke Hashiguchi 2 , Mitsue Miyazaki 5,6
1 Medical Physics and Engineering, Graduate School of Medicine, Osaka University, Suita, Osaka, Japan; 2 Medical Technology,
Kousei Hospital, Okayama, Japan; 3 Kawasaki Medical School Kawasaki Hospital, Okayama, Japan; 4 Kurashiki Riverside Hospital,
Kurashiki, Okayama, Japan; 5 Toshiba Medical Research Institute, Vernon Hills, IL, United States; 6 Toshiba Medical Systems Corp,
Otawara, Tochigi, Japan
The diagnostic accuracy of non-contrast-enhanced MR venography using both the flow-refocused fresh-blood imaging (FR-FBI) and the swap phase-encode
arterial double-subtraction elimination (SPADE) techniques for detecting deep vein thrombosis (DVT) were prospectively assessed and compared using
conventional X-ray venography as the reference standard. Thirty-two consecutive patients suspected of having DVT, examined using conventional X-ray
venography, underwent MR FR-FBI and SPADE. Two radiologists independently assessed the non-contrast MR venograms for presence and the sensitivities
for diagnosing thrombus were 100% for both reviewers. The specificities were 100% and 99.6% and the interobserver agreement was almost perfect (ƒÈ =
0.92).
1386. Aortic Compliance in Normals Correlates with Age and BMI
Yi Wang 1,2 , Edwin Estrada 1 , Simcha Pollack 1 , Visali Kodali 1 , Nathaniel Reichek 1,2
1 Research and Education, St. Francis Hospital, Roslyn, NY, United States; 2 Biomedical Enginnering, State University of New York,
Stony Brook, NY, United States
Aortic compliance (AC) can be evaluated noninvasively and its reduction with age in normals has been demonstrated with MRI. Decreased aortic
compliance (AC) is associated with aging, systolic hypertension and left ventricular diastolic dysfunction. Aortic pulse wave velocity (PWV) often serves as
a surrogate to AC, and it can be evaluated using a single breath-hold phase contrast imaging technique. Its age correlation has been demonstrated by both
MR and echo studies in normal volunteers. We evaluated the aortic compliance and their relationship to age, as well as the other biomedical parameters in
189 normal volunteers.