<b>Optimization of single shot 3D breath-hold non-enhanced MR angiography of the renal arteries</b>
<p>Abstract</p> <p>Background</p> <p>Cardiac and navigator-gated, inversion-prepared non-enhanced magnetic resonance angiography techniques can accurately depict the renal arteries without the need for contrast administration. However, the scan time and effectiveness of...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2012-05-01
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| Series: | Journal of Cardiovascular Magnetic Resonance |
| Subjects: | |
| Online Access: | http://www.jcmr-online.com/content/14/1/30 |
| _version_ | 1797204470528999424 |
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| author | Tan Huan Koktzoglou Ioannis Glielmi Christopher Galizia Mauricio Edelman Robert R |
| author_facet | Tan Huan Koktzoglou Ioannis Glielmi Christopher Galizia Mauricio Edelman Robert R |
| author_sort | Tan Huan |
| collection | DOAJ |
| description | <p>Abstract</p> <p>Background</p> <p>Cardiac and navigator-gated, inversion-prepared non-enhanced magnetic resonance angiography techniques can accurately depict the renal arteries without the need for contrast administration. However, the scan time and effectiveness of navigator-gated techniques depend on the subject respiratory pattern, which at times results in excessively prolonged scan times or suboptimal image quality. A single-shot 3D magnetization-prepared steady-state free precession technique was implemented to allow the full extent of the renal arteries to be depicted within a single breath-hold.</p> <p>Methods</p> <p>Technical optimization of the breath-hold technique was performed with fourteen healthy volunteers. An alternative magnetization preparation scheme was tested to maximize inflow signal. Quantitative and qualitative comparisons were made between the breath-hold technique and the clinically accepted navigator-gated technique in both volunteers and patients on a 1.5 T scanner.</p> <p>Results</p> <p>The breath-hold technique provided an average of seven fold reduction in imaging time, without significant loss of image quality. Comparable single-to-noise and contrast-to-noise ratios of intra- and extra-renal arteries were found between the breath-hold and the navigator-gated techniques in volunteers. Furthermore, the breath-hold technique demonstrated good image quality for diagnostic purposes in a small number of patients in a pilot study.</p> <p>Conclusions</p> <p>The single-shot, breath-hold technique offers an alternative to navigator-gated methods for non-enhanced renal magnetic resonance angiography. The initial results suggest a potential supplementary clinical role for the breath-hold technique in the evaluation of suspected renal artery diseases.</p> |
| first_indexed | 2024-04-13T03:03:14Z |
| format | Article |
| id | doaj.art-857e4903dcf442339c8d3bd1105df197 |
| institution | Directory Open Access Journal |
| issn | 1097-6647 1532-429X |
| language | English |
| last_indexed | 2024-04-24T08:35:44Z |
| publishDate | 2012-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Cardiovascular Magnetic Resonance |
| spelling | doaj.art-857e4903dcf442339c8d3bd1105df1972024-04-16T17:08:40ZengElsevierJournal of Cardiovascular Magnetic Resonance1097-66471532-429X2012-05-011413010.1186/1532-429X-14-30<b>Optimization of single shot 3D breath-hold non-enhanced MR angiography of the renal arteries</b>Tan HuanKoktzoglou IoannisGlielmi ChristopherGalizia MauricioEdelman Robert R<p>Abstract</p> <p>Background</p> <p>Cardiac and navigator-gated, inversion-prepared non-enhanced magnetic resonance angiography techniques can accurately depict the renal arteries without the need for contrast administration. However, the scan time and effectiveness of navigator-gated techniques depend on the subject respiratory pattern, which at times results in excessively prolonged scan times or suboptimal image quality. A single-shot 3D magnetization-prepared steady-state free precession technique was implemented to allow the full extent of the renal arteries to be depicted within a single breath-hold.</p> <p>Methods</p> <p>Technical optimization of the breath-hold technique was performed with fourteen healthy volunteers. An alternative magnetization preparation scheme was tested to maximize inflow signal. Quantitative and qualitative comparisons were made between the breath-hold technique and the clinically accepted navigator-gated technique in both volunteers and patients on a 1.5 T scanner.</p> <p>Results</p> <p>The breath-hold technique provided an average of seven fold reduction in imaging time, without significant loss of image quality. Comparable single-to-noise and contrast-to-noise ratios of intra- and extra-renal arteries were found between the breath-hold and the navigator-gated techniques in volunteers. Furthermore, the breath-hold technique demonstrated good image quality for diagnostic purposes in a small number of patients in a pilot study.</p> <p>Conclusions</p> <p>The single-shot, breath-hold technique offers an alternative to navigator-gated methods for non-enhanced renal magnetic resonance angiography. The initial results suggest a potential supplementary clinical role for the breath-hold technique in the evaluation of suspected renal artery diseases.</p>http://www.jcmr-online.com/content/14/1/30Non-enhanced Renal MRA3D Steady-State Precession AcquisitionBreath-hold |
| spellingShingle | Tan Huan Koktzoglou Ioannis Glielmi Christopher Galizia Mauricio Edelman Robert R <b>Optimization of single shot 3D breath-hold non-enhanced MR angiography of the renal arteries</b> Journal of Cardiovascular Magnetic Resonance Non-enhanced Renal MRA 3D Steady-State Precession Acquisition Breath-hold |
| title | <b>Optimization of single shot 3D breath-hold non-enhanced MR angiography of the renal arteries</b> |
| title_full | <b>Optimization of single shot 3D breath-hold non-enhanced MR angiography of the renal arteries</b> |
| title_fullStr | <b>Optimization of single shot 3D breath-hold non-enhanced MR angiography of the renal arteries</b> |
| title_full_unstemmed | <b>Optimization of single shot 3D breath-hold non-enhanced MR angiography of the renal arteries</b> |
| title_short | <b>Optimization of single shot 3D breath-hold non-enhanced MR angiography of the renal arteries</b> |
| title_sort | b optimization of single shot 3d breath hold non enhanced mr angiography of the renal arteries b |
| topic | Non-enhanced Renal MRA 3D Steady-State Precession Acquisition Breath-hold |
| url | http://www.jcmr-online.com/content/14/1/30 |
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