| MR-based visualization and quantification of three-dimensional flow characteristics in the portal venous system. | |
| | |
MedLine Citation:
|
PMID: 20677279 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
PURPOSE: To evaluate the feasibility of time-resolved flow-sensitive MRI for the three-dimensional (3D) visualization and quantification of normal and pathological portal venous (PV) hemodynamics. MATERIALS AND METHODS: Portal venous hemodynamics were evaluated in 18 healthy volunteers and 5 patients with liver cirrhosis. ECG- and adaptive respiratory navigator gated flow-sensitive 4D MRI (time-resolved 3D MRI with three-directional velocity encoding) was performed on a 3 Tesla MR system (TRIO, Siemens, Germany). Qualitative flow analysis was achieved using 3D streamlines and time-resolved particle traces originating from seven emitter planes precisely placed at anatomical landmarks in the PV system. Quantitative analysis included retrospective extraction of regional peak and mean velocities and vessel area. Results were compared with standard 2D flow-sensitive MRI and to the reference standard Doppler ultrasound. RESULTS: Qualitative flow analysis was successfully used in the entire PV system. Venous hemodynamics in all major branches in 17 of 18 volunteers and 3 of 5 patients were reliably depicted with good interobserver agreement (kappa = 0.62). Quantitative analysis revealed no significant differences and moderate agreement for peak velocities between 3D MR and 2D MRI (r = 0.46) and Doppler ultrasound (US) (r = 0.35) and for mean velocities between 3D and 2D MRI (r = 0.41). The PV area was significantly (P < 0.01) higher in 3D and 2D MRI compared with US. CONCLUSION: We successfully applied 3D MR velocity mapping in the PV system, providing a detailed qualitative and quantitative analysis of normal and pathological hemodynamics. |
| | |
Authors:
|
Zoran Stankovic; Alex Frydrychowicz; Zoltan Csatari; Elisabeth Panther; Peter Deibert; Wulf Euringer; Wolfgang Kreisel; Maximilian Russe; Simon Bauer; Mathias Langer; Michael Markl |
Related Documents
:
|
18255479 - Uniqueness of tomography with unknown view angles. 19559549 - How many ct detector rows are necessary to perform adequate three dimensional visualiza... 19125269 - 3d computer-assisted assessment of complicated penetrating foreign bodies cases in ent ... 10565719 - Magnetic resonance imaging virtual endoscopy of the labyrinth. 1919789 - Computer reconstruction of nucleolar architecture by interactive three-dimensional colo... 9350489 - Three-dimensional imaging of the pediatric airway. 22034579 - Zinner's syndrome. 19146689 - Transient loss of consciousness caused by cryptococcal meningitis in an immunocompetent... 22548929 - Vascular disorders-magnetic resonance angiography: brain vessels. |
Publication Detail:
|
Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
|
Title: Journal of magnetic resonance imaging : JMRI Volume: 32 ISSN: 1522-2586 ISO Abbreviation: J Magn Reson Imaging Publication Date: 2010 Aug |
Date Detail:
|
Created Date: 2010-08-02 Completed Date: 2010-11-24 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 9105850 Medline TA: J Magn Reson Imaging Country: United States |
Other Details:
|
Languages: eng Pagination: 466-75 Citation Subset: IM |
Copyright Information:
|
2010 Wiley-Liss, Inc. |
Affiliation:
|
Department of Diagnostic Radiology and Medical Physics, University Hospital Freiburg, Freiburg, Germany. zoran.stankovic@uniklinik-freiburg.de |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Adult Aged Electrocardiography / methods Female Hemodynamics Humans Image Processing, Computer-Assisted / methods* Imaging, Three-Dimensional / methods Liver Cirrhosis / pathology* Magnetic Resonance Imaging / methods* Male Middle Aged Portal Vein / pathology* Respiration Ultrasonography, Doppler / methods |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Comparison of the high relaxivity Gd chelates P1152 and Gd-BOPTA for contrast-enhanced MR angiograph...
Next Document: Improved homogeneity of the transmit field by simultaneous transmission with phased array and volume...