Diffusion-weighted imaging of the liver: comparison of image quality between monopolar and bipolar acquisition schemes at 3T
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| 024 | 7 | 0 | |a 10.1007/s00261-014-0215-9 |2 doi |
| 035 | |a (NATIONALLICENCE)springer-10.1007/s00261-014-0215-9 | ||
| 245 | 0 | 0 | |a Diffusion-weighted imaging of the liver: comparison of image quality between monopolar and bipolar acquisition schemes at 3T |h [Elektronische Daten] |c [Andrew Rosenkrantz, Christian Geppert, Michael Kiritsy, Thorsten Feiweier, David Mossa, Hersh Chandarana] |
| 520 | 3 | |a Purpose: To compare image quality of monopolar and bipolar diffusion-weighted imaging (DWI) sequences of the liver at 3T. Methods: 32 healthy volunteers (mean 27±8years; 27M/5F) and 11 patients (mean age 58±14years; 8M/3F) underwent liver MRI using a 3T system incorporating 2-channel parallel transmission for B1-shimming and reduced B1-inhomogeneity. Scans included free-breathing DWI sequences (b-value 0, 400, 800s/mm2) acquired using both monopolar and bipolar techniques. Estimated signal-to-noise ratio (eSNR), apparent diffusion coefficient (ADC), and measures of subjective image quality on b-800 images, scored on a 1-5 scale by two independent radiologists, were compared between sequences. Results: Monopolar sequence demonstrated significantly higher eSNR (volunteers: 12.7±4.0 vs. 11.3±3.5, patients: 11.4±4.0 vs. 10.2±3.3; p≤0.013) compared with the bipolar sequence. Monopolar sequence also achieved significantly higher scores for reader 1 in volunteers and patients in terms of clarity of right lobe edge, clarity of intra-hepatic vessels, conspicuity of the left lobe, and overall diagnostic quality (p≤0.031), as well as significantly higher scores for reader 2 in volunteers in terms of clarity of intra-hepatic vessels, conspicuity of the left lobe, and overall diagnostic quality (p≤0.035). Respiratory motion artifact was not significantly different between sequences in patients or volunteers for either reader (p≥0.191). Hepatic ADC was significantly lower using monopolar technique only in volunteers (1.28±0.12 vs. 1.43±0.15, p<0.001). Conclusion: In comparison with past studies performed at 1.5T, when using a modern 3T system, we observed improved image quality of liver DWI using a monopolar, rather than a bipolar, acquisition scheme, largely attributed to higher eSNR. | |
| 540 | |a Springer Science+Business Media New York, 2014 | ||
| 690 | 7 | |a Liver |2 nationallicence | |
| 690 | 7 | |a 3T MRI |2 nationallicence | |
| 690 | 7 | |a Diffusion-weighted imaging |2 nationallicence | |
| 690 | 7 | |a Image quality |2 nationallicence | |
| 690 | 7 | |a Monopolar gradients |2 nationallicence | |
| 690 | 7 | |a Bipolar gradients |2 nationallicence | |
| 700 | 1 | |a Rosenkrantz |D Andrew |u Department of Radiology, NYU Langone Medical Center, 550 First Avenue, 10016, New York, NY, USA |4 aut | |
| 700 | 1 | |a Geppert |D Christian |u Siemens Medical Solutions, New York, NY, USA |4 aut | |
| 700 | 1 | |a Kiritsy |D Michael |u Department of Radiology, NYU Langone Medical Center, 550 First Avenue, 10016, New York, NY, USA |4 aut | |
| 700 | 1 | |a Feiweier |D Thorsten |u Siemens Healthcare, Erlangen, Germany |4 aut | |
| 700 | 1 | |a Mossa |D David |u Department of Radiology, NYU Langone Medical Center, 550 First Avenue, 10016, New York, NY, USA |4 aut | |
| 700 | 1 | |a Chandarana |D Hersh |u Department of Radiology, NYU Langone Medical Center, 550 First Avenue, 10016, New York, NY, USA |4 aut | |
| 773 | 0 | |t Abdominal Imaging |d Springer US; http://www.springer-ny.com |g 40/2(2015-02-01), 289-298 |x 0942-8925 |q 40:2<289 |1 2015 |2 40 |o 261 | |
| 856 | 4 | 0 | |u https://doi.org/10.1007/s00261-014-0215-9 |q text/html |z Onlinezugriff via DOI |
| 898 | |a BK010053 |b XK010053 |c XK010000 | ||
| 900 | 7 | |a Metadata rights reserved |b Springer special CC-BY-NC licence |2 nationallicence | |
| 908 | |D 1 |a research-article |2 jats | ||
| 949 | |B NATIONALLICENCE |F NATIONALLICENCE |b NL-springer | ||
| 950 | |B NATIONALLICENCE |P 856 |E 40 |u https://doi.org/10.1007/s00261-014-0215-9 |q text/html |z Onlinezugriff via DOI | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Rosenkrantz |D Andrew |u Department of Radiology, NYU Langone Medical Center, 550 First Avenue, 10016, New York, NY, USA |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Geppert |D Christian |u Siemens Medical Solutions, New York, NY, USA |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Kiritsy |D Michael |u Department of Radiology, NYU Langone Medical Center, 550 First Avenue, 10016, New York, NY, USA |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Feiweier |D Thorsten |u Siemens Healthcare, Erlangen, Germany |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Mossa |D David |u Department of Radiology, NYU Langone Medical Center, 550 First Avenue, 10016, New York, NY, USA |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Chandarana |D Hersh |u Department of Radiology, NYU Langone Medical Center, 550 First Avenue, 10016, New York, NY, USA |4 aut | ||
| 950 | |B NATIONALLICENCE |P 773 |E 0- |t Abdominal Imaging |d Springer US; http://www.springer-ny.com |g 40/2(2015-02-01), 289-298 |x 0942-8925 |q 40:2<289 |1 2015 |2 40 |o 261 | ||