| Real-time MR-thermometry and dosimetry for interventional guidance on abdominal organs. | |
| | |
MedLine Citation:
|
PMID: 20373409 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
The use of proton resonance frequency shift-based magnetic resonance (MR) thermometry for interventional guidance on abdominal organs is hampered by the constant displacement of the target due to the respiratory cycle and the associated thermometry artifacts. Ideally, a suitable MR thermometry method should for this role achieve a subsecond temporal resolution while maintaining a precision comparable to those achieved on static organs while not introducing significant processing latencies. Here, a computationally effective processing pipeline for two-dimensional image registration coupled with a multibaseline phase correction is proposed in conjunction with high-frame-rate MRI as a possible solution. The proposed MR thermometry method was evaluated for 5 min at a frame rate of 10 images/sec in the liver and the kidney of 11 healthy volunteers and achieved a precision of less than 2 degrees C in 70% of the pixels while delivering temperature and thermal dose maps on the fly. The ability to perform MR thermometry and dosimetry in vivo during a real intervention was demonstrated on a porcine kidney during a high-intensity focused ultrasound heating experiment. |
| | |
Authors:
|
Sébastien Roujol; Mario Ries; Bruno Quesson; Chrit Moonen; Baudouin Denis de Senneville |
Related Documents
:
|
18421499 - Imaging-guided percutaneous radiofrequency ablation of adrenal metastases: preliminary ... 17473359 - Conformal thermal therapy using planar ultrasound transducers and adaptive closed-loop ... 20142349 - Irreversible electroporation: a new challenge in "out of operating theater" anesthesia. 14561039 - Air-coupled ultrasonic tomographic imaging of high-temperature flames. 12112509 - Magnetic resonance safety testing of a newly-developed fiber-optic cardiac pacing lead. 9419639 - Radiofrequency tissue ablation in the rabbit lung: efficacy and complications. 17211299 - Comparative analysis between transcranial color duplex sonography and magnetic resonanc... 22050509 - Mn-porphyrins as novel molecular mri contrast agents. 1877429 - Idiopathic hemochromatosis. |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: Magnetic resonance in medicine : official journal of the Society of Magnetic Resonance in Medicine / Society of Magnetic Resonance in Medicine Volume: 63 ISSN: 1522-2594 ISO Abbreviation: Magn Reson Med Publication Date: 2010 Apr |
Date Detail:
|
Created Date: 2010-04-07 Completed Date: 2010-07-15 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 8505245 Medline TA: Magn Reson Med Country: United States |
Other Details:
|
Languages: eng Pagination: 1080-7 Citation Subset: IM |
Affiliation:
|
Laboratory for Molecular and Functional Imaging: From Physiology to Therapy, UMR 5231 CNRS/Université Bordeaux 2, Bordeaux, France. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Algorithms Animals Artifacts Body Temperature Humans Hyperthermia, Induced Image Processing, Computer-Assisted Kidney / anatomy & histology*, surgery Liver / anatomy & histology*, surgery Magnetic Resonance Imaging, Interventional / methods* Movement Swine Thermography / methods* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Visualization of active devices and automatic slice repositioning ("SnapTo") for MRI-guided interven...
Next Document: Unambiguous assignment of the H3S and H3R deuterations of cerebral (2-13C) glutamate by 13C NMR at 1...