| Magnitude subtraction vs. complex subtraction in dynamic contrast-enhanced 3D-MR angiography: basic experiments and clinical evaluation. | |
| | |
MedLine Citation:
|
PMID: 10548793 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
Magnitude subtraction and complex subtraction in dynamic contrast-enhanced three-dimensional magnetic resonance (3D-MR) angiography were compared using a phantom and 23 human subjects. In phantom studies, complex subtraction showed far better performance than magnitude subtraction, especially for longer echo times, with thicker slices, and without fat suppression. With complex subtraction, non-fat-suppressed studies showed contrast-to-noise ratios comparable to those in fat-suppressed studies. In human subjects, complex subtraction was superior to magnitude subtraction in 9 subjects, but comparable to magnitude subtraction in 14 subjects. There were no cases in which magnitude subtraction was superior to complex subtraction. Although the differences observed in human studies when complex subtraction was applied with thinner slices, shorter echo times, and the fat-suppression technique were not as pronounced as those seen in phantom studies, complex subtraction should be performed in dynamic contrast-enhanced 3D-MR angiography because there are no drawbacks in complex subtraction. Further research is necessary to assess the feasibility of dynamic contrast-enhanced 3D-MR angiography without fat suppression in human subjects using complex subtraction, as suggested by the results of phantom studies. If it is found to be feasible, dynamic contrast-enhanced 3D-MR angiography without fat suppression using complex subtraction may prove to be a robust technique that eliminates the need for shimming and can reduce the acquisition time. J. Magn. Reson. Imaging 1999;10:813-820. |
| | |
Authors:
|
S Naganawa; T Ito; E Iwayama; H Fukatsu; T Ishiguchi; T Ishigaki; N Ichinose |
Related Documents
:
|
9193033 - Assessment of flail mitral leaflets by dynamic three-dimensional echocardiographic imag... 11802023 - Real-time, cine magnetic resonance imaging for evaluation of the pediatric airway. 22118593 - Mr imaging of the newborn: a technical perspective. |
Publication Detail:
|
Type: Comparative Study; Journal Article |
Journal Detail:
|
Title: Journal of magnetic resonance imaging : JMRI Volume: 10 ISSN: 1053-1807 ISO Abbreviation: J Magn Reson Imaging Publication Date: 1999 Nov |
Date Detail:
|
Created Date: 2000-01-11 Completed Date: 2000-01-11 Revised Date: 2006-11-15 |
Medline Journal Info:
|
Nlm Unique ID: 9105850 Medline TA: J Magn Reson Imaging Country: UNITED STATES |
Other Details:
|
Languages: eng Pagination: 813-20 Citation Subset: IM |
Copyright Information:
|
Copyright 1999 Wiley-Liss, Inc. |
Affiliation:
|
Department of Radiology, Nagoya University School of Medicine, Nagoya 466-8550, Japan. shinji.naganawa@nifty.ne.jp |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Adult Aged Contrast Media Female Gadolinium DTPA / diagnostic use Humans Image Processing, Computer-Assisted Injections, Intravenous Magnetic Resonance Angiography / methods* Male Middle Aged Phantoms, Imaging Subtraction Technique Vascular Diseases / diagnosis* |
| Chemical | |
Reg. No./Substance:
|
0/Contrast Media; 122795-43-1/gadodiamide; 80529-93-7/Gadolinium DTPA |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Does a higher concentration of gadolinium chelates improve first-pass cardiac signal changes?
Next Document: A fast 3D approach for coronary MRA.