Basic Evaluation of a New Technique, Tailored Contrast Truck-Fluid-Attenuated Driven Inversion-Recovery(TACT-FLADIR), to Attenuate the Signals of Both Cerebrospinal Fluid and Inflow Artifacts
The aim of the present study was to evaluate the new tailored contrast truck-fluid-attenuated driven inversion-recovery (TACT-FLADIR) sequence. Technically, this sequence uses a nonselectively driven inversion (Dl) pulse as the inversion pulse. The DI pulse has two parameters, number of refocus puls...
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| Veröffentlicht in: | Japanese Journal of Radiological Technology 2004/09/20, Vol.60(9), pp.1316-1324 |
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| container_title | Japanese Journal of Radiological Technology |
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| creator | MIZUTANI, KOJI SUMIDA, TOMOTAKA MATSUDA, MORIKATSU ISHIKAWA, AKIHIRO |
| description | The aim of the present study was to evaluate the new tailored contrast truck-fluid-attenuated driven inversion-recovery (TACT-FLADIR) sequence. Technically, this sequence uses a nonselectively driven inversion (Dl) pulse as the inversion pulse. The DI pulse has two parameters, number of refocus pulses (NR) and preparation time (TP). Using normal volunteers, we optimized NR and TP to measure signal-to-noise ratios (SNR) and contrast-to-noise ratios (CNR) of gray matter (GM) and white matter (WM), and to obtain CSF inflow artifacts. TACT-FLADIR was compared with conventional FLAIR using volunteers and patients. Among the optimized parameters, SNR and CNR were dependent on TP, and inflow artifacts were reduced by increasing NR. In brain imaging, TACT-FLADIR provided improvement in both SNR and CNR compared with conventional imaging with suppressed CSF signal and saturated flow artifacts. |
| doi_str_mv | 10.6009/jjrt.KJ00003174599 |
| format | Article |
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J. Radiol. Technol.</addtitle><description>The aim of the present study was to evaluate the new tailored contrast truck-fluid-attenuated driven inversion-recovery (TACT-FLADIR) sequence. Technically, this sequence uses a nonselectively driven inversion (Dl) pulse as the inversion pulse. The DI pulse has two parameters, number of refocus pulses (NR) and preparation time (TP). Using normal volunteers, we optimized NR and TP to measure signal-to-noise ratios (SNR) and contrast-to-noise ratios (CNR) of gray matter (GM) and white matter (WM), and to obtain CSF inflow artifacts. TACT-FLADIR was compared with conventional FLAIR using volunteers and patients. Among the optimized parameters, SNR and CNR were dependent on TP, and inflow artifacts were reduced by increasing NR. 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J. Radiol. Technol.</addtitle><date>2004-09</date><risdate>2004</risdate><volume>60</volume><issue>9</issue><spage>1316</spage><epage>1324</epage><pages>1316-1324</pages><issn>0369-4305</issn><eissn>1881-4883</eissn><abstract>The aim of the present study was to evaluate the new tailored contrast truck-fluid-attenuated driven inversion-recovery (TACT-FLADIR) sequence. Technically, this sequence uses a nonselectively driven inversion (Dl) pulse as the inversion pulse. The DI pulse has two parameters, number of refocus pulses (NR) and preparation time (TP). Using normal volunteers, we optimized NR and TP to measure signal-to-noise ratios (SNR) and contrast-to-noise ratios (CNR) of gray matter (GM) and white matter (WM), and to obtain CSF inflow artifacts. TACT-FLADIR was compared with conventional FLAIR using volunteers and patients. Among the optimized parameters, SNR and CNR were dependent on TP, and inflow artifacts were reduced by increasing NR. 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| identifier | ISSN: 0369-4305 |
| ispartof | Japanese Journal of Radiological Technology, 2004/09/20, Vol.60(9), pp.1316-1324 |
| issn | 0369-4305 1881-4883 |
| language | eng ; jpn |
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| source | MEDLINE; EZB-FREE-00999 freely available EZB journals |
| subjects | Adult Aged Aged, 80 and over Brain - pathology Cerebral Infarction - diagnosis Cerebrospinal Fluid - physiology Driven inversion Female FLAIR Humans Magnetic Resonance Imaging - methods Male Meningeal Neoplasms - diagnosis Meningioma - diagnosis Middle Aged MRI Pulse sequence |
| title | Basic Evaluation of a New Technique, Tailored Contrast Truck-Fluid-Attenuated Driven Inversion-Recovery(TACT-FLADIR), to Attenuate the Signals of Both Cerebrospinal Fluid and Inflow Artifacts |
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