TRADITIONAL POSTER - ismrm

Poster Sessions
1400. Measuring Pulmonary Transit Time by 2D Magnetic Resonance Dynamic Imaging in Heart Failure
Patients
Jie Jane Cao 1,2 , Yi Wang, Jeannette McLaughlin, Michael Passick, Nathaniel Reichek
1 St Francis Hospital, Roslyn, NY, United States; 2 State University of New York at Stony Brook, Stony Brook, NY, United States
We developed a 2D dynamic acquisition to measure pulmonary transit time in normals and heart failure patients and investigated the impact of temporal
resolution on pulmonary transit time measurement.
1401. Non-Contrast MR Angiography of the Toes: Correlations with Age and Gender
Jun Isogai 1 , Mitsue Miyazaki 2 , Hideo Hatakeyama 1 , Takeshi Shimada 1 , Takashi Yamada 1 , Tomoko Miyata 3 ,
Kenji Yodo 3 , Ken Kudou 3
1 Radiology, Hasuda Hospital, Hasuda, Saitama, Japan; 2 Toshiba Medical Research Institute USA, United States; 3 Toshiba Medical
Systems Corp., Japan
Visualization of toe arteries is quite difficult using conventional nonenhanced MR angiography, such as time-of-flight due to the tortuous arterial trees and
slow-velocity, especially in older female toes. Gadolinium-enhanced MRA also has several problems with injection rates, the amount of contrast material,
and the separation of arteries from veins. Due to the recent concerns of Gadolinium-related Nephrogenic Systemic Fibrosis (NSF), nonenhanced MRA
solutions have gained interest. Depiction of small arteries of the toes was investigated using time-spatial labeling inversion pulse (time-SLIP) in combination
with a swap phase encode extended data (SPEED) acquisition.
1402. Fat Saturation Techniques in Non-Contrast Enhanced B-SSFP MRA of the Renal Arteries.
Anne Dorte Blankholm 1 , Won Yong Kim 2,3 , Brian Stausbøl-Grøn 1 , Michael Pedersen 4 , Steffen Ringgaard 4
1 MR-Centre, Dept. of Diagnostic Imaging, Århus University Hospital, Skejby, Århus N, Denmark; 2 MR-Centre, , Århus University
Hospital, Skejby, Århus N, Denmark; 3 Department of Cardiology, Århus University Hospital, Skejby, Århus N, Denmark; 4 MR-
Centre, Århus University Hospital, Skejby, Århus N, Denmark
Due to the risk for inducing nephrogenic systemic fibrosis (NSF) there is a need for developing angiography without the use of contrast agents, in particular
for patients with renal disease. MRA of the renal arteries was obtained using a balanced steady-state-free-precession (B-SSFP) method with a slab selective
inversion prepulse in combination with ProSet, SPAIR and SPIR fat saturation and the images were compared with respect to fat suppression and CNR. The
ProSet technique (water selective excitation with binomial pulses) were most effective for fat saturation and produced highest vessel/muscle CNR using this
sequence.
1403. Non-Contrast MR Angiography of the Subclavian Arterial Branch Using 3D Half-Fourier FSE with
Time-SLIP
Jun Isogai 1 , Mitsue Miyazaki 2 , Takeshi Shimada 1 , Hideo Hatakeyama 1 , Takashi Yamada 1 , Tomoko Miyata 3 ,
Kenji Yodo 3 , Ken Kudou 3
1 Radiology, Hasuda Hospital, Hasuda, Saitama, Japan; 2 Toshiba Medical Research Institute USA, United States; 3 Toshiba Medical
Systems Corp., Japan
Visualization of the subclavian arterial branches is quite difficult using conventional nonenhanced time-of-flight MR angiography due to the tortuous arterial
trees and small vessels. Gadolinium-enhanced MRA also has several problems with injection rates, the amount of contrast material, and venous
superimposition. Due to the recent concerns of Gadolinium-related Nephrogenic Systemic Fibrosis (NSF), nonenhanced MRA solutions have gained interest.
Visualization of small arteries of the subclavian arterial branches was investigated using 3D half-Fourier FSE images combined with time-spatial labeling
inversion pulse (time-SLIP).
1404. Non-Contrast Enhanced MRA in the Preoperative Planning of Abdominal Perforator Surgery for
Postmastectomy Breast Reconstruction
J A. Clavero 1 , Mitsue Miyazaki 2 , Faiza Admiraa-Behloul 3 , X Alomar 1 , J Masia 4 , G Pons 4
1 Diagnostic Imaging, Clinica Creu Blanca, Barcelona, Spain; 2 Toshiba Medical Research Institute, Vernon Hills, United States;
3 Toshiba Medical Systems Europe, Zoetermeer, Netherlands; 4 Plastic Surgery, Free University of Barcelona, Barcelona, Spain
Post-mastectomy autologous breast reconstruction using abdominal perforator flaps gained popularity because it offers a natural soft breast mound, and
preserves the donor site muscle and function. Because the vascular anatomy of the abdominal wall is highly variable between individuals, a detailed accurate
preoperative vascular map of the abdomen can significantly reduce the operating time, with a better surgical outcome. MDCTA proved to be very useful for
this purpose [1], however it requires ionizing contrast agents and radiation. the purpose of this work was to investigate the role of non-contrast enhanced MR
angiography (NC-MRA), as compared to MDCTA, in the preoperative evaluation of the vascular anatomy of the abdominal wall for abdominal perforator
flap surgery in post-mastectomy breast reconstruction.
1405. Intraindividual Comparison of Static, High Resolution and Dynamic 4D Contrast Enhanced Magnetic
Resonance Angiography of the Lower Legs
Johannes T. Heverhagen 1 , Sabrina El Tobgui, Mykhylo Burbelko, Klaus J. Klose
1 Department of Diagnostic Radiology, Philipps University, Marburg, Germany
The purpose of this study was to intraindividually compare static, high resolution and dynamic CE MRA of the lower legs in patients with severe peripheral
arterial occlusive disease (PAOD). State of the art 4D MRA of the lower legs for suspected PAOD provides excellent image quality without venous overlay,
an artefact that severely influences diagnostic quality in static MRAs. It is user independent proven by a Cohen´s kappa of 0.92. 4D MRA of the lower legs
should be employed in all patients undergoing CE MRA for suspected PAOD.