ELECTRONIC POSTER - ismrm

therapies. MRI characteristics of triple negative breast cancer could assist pretreatment planning and prognosis assessment. We
evaluated MRI and clinicopathologic features of triple negative breast cancer, and compared them with those of non triple negative
breast cancer.
15:00 4561. Multiparametric MR Measurement of Menstrual Variation in the Breast
Sungheon Kim 1 , Linda Moy 1 , Malcolm C. Pike 2 , Anne Zeleniuch-Jacquotte 3 , Tess
Clendenen 4
1 Center for Biomedical Imaging, Radiology, NYU School of Medicine, New York, NY, United States;
2 Preventive Medicine, USC Keck School of Medicine, Los Angeles, CA, United States; 3 Environmental
Medicine, NYU School of Medicine, New York, NY, United States; 4 Epidemiology, NYU School of Medicine,
New York, NY, United States
The purpose of this study was to develop a multiparametric MRI method to investigate magnitude and timing of various breast
changes during the menstrual cycle. Five healthy premenopausal women were scanned once a week for four weeks. T2, ADC, and
magnetization transfer rate were measured. T2 gradually increased throughout the cycle and was 5% higher in the menstrual phase
than the follicular phase. In contrast, the median ADC was highest in the luteal phase (15% greater than the follicular phase) and
began to decline during menses. The MTR was about 4% lower in the menstrual phase than the follicular phase.
Fetal & Female Pelvis
Hall B Thursday 13:30-15:30 Computer 91
13:30 4562. Time-Resolved MR Angiography in the Detection of Ovarian Venous Reflux
Dal Mo Yang 1 , Dong Ho Lee 2 , Dong Wook Sung 2 , Geon-Ho Jahng, Chang Woo Ryu
1 Radiology, East-West Neo Medical Center, Kyung Hee University, Seoul, Korea, Republic of; 2 Radiology,
Kyung Hee University Hospital
The purpose of this study was to compare the diagnostic accuracy of time-resolved MR angiography with that of conventional
angiography for detection of ovarian venous reflux, which aid for a diagnosis of pelvic venous congestion. Retrospective analysis was
performed with 19 consecutive patients who underwent time-resolved MR angiography and conventional angiography. There was no
significant difference between time-resolved MR angiography and conventional angiography for detection of ovarian venous reflux (P
> 0.05). The sensitivity, specificity, and diagnostic accuracy of time-resolved MR angiography were found to be 93.5%, 66.7%, and
89.5%, respectively. Time-resolved MR angiography is helpful for diagnosis of pelvic venous congestion.
14:00 4563. Magnetic Resonance Imaging and Ultrasonography in Diagnosis of Pelvic Vein
Thrombosis During Pregnancy
Michael R. Torkzad 1 , Katarina Bremme 2 , Margareta Hellgren 3 , Maria J. Eriksson 4 , Anna
Hagman 5 , Trine Jörgensen 2 , Kent Lund 4 , Gunnel Sandgren 6 , Lennart Blomqvist 7 , Peter
Kälebo 8
1 Radiology Department, Uppsala University Hospital, Stockholm, Sweden; 2 Karolinska Institutet, Woman and
Child Health, Stockholm, Sweden; 3 The Sahlgrenska Academy, University of Gothenburg, Institute for the
Health of Women and Children, Gothenburg, Sweden; 4 Karolinska Institutet, Department of Clinical
Physiology, Stockholm, Sweden; 5 The Sahlgrenska Academy, Institute for the Health of Women and Children,
Gothenburg, Sweden; 6 Sahlgrenska University Hospital/Östra, Department of Clinical Physiology, Gothenburg,
Sweden; 7 Department of Diagnostic Radiology, Karolinska University Hospital Solna, Department of
Diagnostic Radiology, Stockholm, Sweden; 8 Sahlgrenska University Hospital/Östra, Department of Radiology,
Gothenburg, Sweden
Purpose: The agreement between ultrasonography and magnetic resonance imaging (MRI) in diagnosing the extent of pelvic deep vein
thrombosis (DVT) during pregnancy was measured. Materials and methods Pelvic veins of 27 pregnant women with DVT were
examined with ultrasound and MRI. Results: Three cases (11.5%) of DVT in the pelvic veins were shown only on MRI. MRI was able
to detect highr thrombus extension in 65% of cases. Proportion of agreement (ê) between ultrasound and MRI for DVT in individual
veins was 0.33 (95% CI 0.27-0.40, i.e. fair agreement). Conclusion: MRI could be essential in diagnosis of pelvic DVT during
pregnancy.
14:30 4564. Assessment of Placental Blood Flow Using a Navigator Echo Respiratory Gated
Parallel Imaging Technique at 1.5 T
Loredana Sorina Truica 1 , Ian Cameron, 1,2 , Leonard I. Avruch 2 , Andre Gruslin 2
1 Carleton University, Ottawa, ON, Canada; 2 The Ottawa Hospital, Ottawa, ON, Canada
IVIM measurements of normal placenta at 1.5 T using a respiratory triggered DW_SS_EPI sequence are reported. Improvements in
the acquisition and analysis techniques used in this study allowed us to obtain more consistent results for the perfusion fraction, f, the
diffusion coefficient, D, and the pseudo-diffusion coefficient, D*, than previous studies. Parameter maps of D and f were reflective of
placental structure and composition. Such maps can be useful tools in identifying tissue differences and give important insight into the
placental hemodynamic systems. This technique could become instrumental in the assessment and management of abnormal
pregnancies.