Single-shot Look Locker T1 mapping with golden angle radial sampling for free-breathing liver DCE-MRI in rats at 1.5 T
نویسندگان
چکیده
Fig. 3 IR-TSE LLRGC 10° LLRGC 8° LLRGC 6° LLRGC 4° 172 148 (25) 142 (32) 133 (41) 128 (51) 387 394 (20) 390 (28) 387 (36) 388 (46) 638 574 (49) 579 (48) 579 (47) 585 (55) 960 890 (49) 903 (50) 925 (55) 936 (73) 1344 1311 (94) 1326 (96) 1345 (105) 1355 (152) 1835 1694 (177) 1714 (188) 1732 (198) 1727 (242) Mean (stddev) phantom T1 values [ms] Single-shot Look Locker T1 mapping with golden angle radial sampling for free-breathing liver DCE-MRI in rats at 1.5 T
منابع مشابه
Microsoft Word - ISMRM2009-002579.DOC
Time[s] G d c o n ce n tr at io n [m M ] Fig. 2b LLRGC 3DT1GRE Table 1 Parameters 3DT1GRE LLRGC 3DT1GRE LLRGC 3DT1GRE LLRGC T10 [ms] 1048 (150) 1073 (75) 468 (102) 519 (46) 956 (316) 918 (40) Td [s] -2.38 (4.5) -1.5 (1.9) -1.75 (2.6) 2.88 (1.9) 0.5 (6.4) 0.75 (2.1) Ktrans [min-1] 0.10 (0.05) 0.48 (0.09) 0.22 (0.07) 0.78 (0.21) 0.04 (0.02) 0.10 (0.02) Ve [%] 7.75 (2.2) 18.37 (2.6) 10.07 (3.8) 22...
متن کاملSimultaneous assessment of gastric secretion, mixing and emptying during free breathing
Introduction: Gastric emptying, distention and intragastric secretion and mixing are important factors in pathogenesis of gastro-intestinal diseases such as gastro-esophageal reflux disease (GERD). Recently a noninvasive method for quantification of gastric secretion was proposed based on combined T1 and B1 mapping (T1B1) [1]. The main drawbacks of this method are motion and flow sensitivity wh...
متن کاملAnalytical Equation of State for Rapid and Direct Quantification of Longitudinal Relaxation Time (T1) in Look-Locker Sequences
Introduction: Quick and accurate measurement of the longitudinal relaxation time T1, has become increasingly important to quantitatively estimate tissue physiological parameters such as perfusion, capillary permeability, and the volume of extravascular-extracellular space using R1 (R1=1/ T1) maps in dynamic contrastenhanced MRI (DCE-MRI) [1-5]. In the past, we have used an imaging variant of th...
متن کاملA segmented modified look-locker inversion recovery (MOLLI) sequence for high heart rate T1 mapping of mice
Background Quantitative T1 mapping provides myocardial tissue characterization for assessment of various cardiomyopathies. The Modified Look-locker (MOLLI) sequence is widely used for mapping the T1quantification, where multiple single-shot images are acquired along the T1 recovery curve after an inversion pulse. However, single-shot imaging becomes infeasible for mouse imaging at high heart ra...
متن کاملMyocardial T1 mapping at 3.0T using inversion recovery FLASH readout
Background Myocardial T1 mapping methods such as modified Look-Locker inversion-recovery (MOLLI) typically use balanced steady state free precession (bSSFP) readout, which is known to be particularly sensitive to off resonance and thus limits its utility at higher field strengths. Fast low angle shot (FLASH) imaging is known to be more robust against susceptibility artifacts than bSSFP. However...
متن کامل