Determining the longitudinal relaxation time (T1) of blood at 3.0 Tesla - PubMed (original) (raw)
Determining the longitudinal relaxation time (T1) of blood at 3.0 Tesla
Hanzhang Lu et al. Magn Reson Med. 2004 Sep.
Free article
Abstract
It is important to determine the longitudinal relaxation time of blood for black blood imaging, as well as for quantifying blood flow by arterial spin labeling (ASL). In this study a circulation system was used to measure blood T1 under physiological conditions at the new clinical field strength of 3.0T. It was found that 1/T1 in s(-1) was linearly dependent (P < 0.05) on hematocrit (Hct) within a normal range of 0.38-0.46. The relationships were 1/T1 = (0.52 +/- 0.15). Hct + (0.38 +/- 0.06) and 1/T1 = (0.83 +/- 0.07). Hct + (0.28 +/- 0.03) for arterial (oxygenation = 92% +/- 7%) and venous blood (69% +/- 8%), respectively, which led to estimated T1 values of 1664 +/- 14 ms (arterial) and 1584 +/- 5 ms (venous) at a typical human Hct of 0.42. The temperature dependencies of blood T1 were 22.3 +/- 0.6 ms/ degrees C and 19.8 +/- 0.8 ms/ degrees C for Hct values of 0.42 and 0.38, respectively. When a head coil transmit/receive setup was used, radiation damping caused a slight reduction (19 ms) of the measured T1 values.
Copyright 2004 Wiley-Liss, Inc.
Similar articles
- Determination of blood longitudinal relaxation time (T1) at high magnetic field strengths.
Dobre MC, Uğurbil K, Marjanska M. Dobre MC, et al. Magn Reson Imaging. 2007 Jun;25(5):733-5. doi: 10.1016/j.mri.2006.10.020. Epub 2006 Dec 8. Magn Reson Imaging. 2007. PMID: 17540286 - In vivo measurement of longitudinal relaxation time of human blood by inversion-recovery fast gradient-echo MR imaging at 3T.
Shimada K, Nagasaka T, Shidahara M, Machida Y, Tamura H. Shimada K, et al. Magn Reson Med Sci. 2012;11(4):265-71. doi: 10.2463/mrms.11.265. Magn Reson Med Sci. 2012. PMID: 23269013 - T1 and T2 values of human neonatal blood at 3 Tesla: Dependence on hematocrit, oxygenation, and temperature.
Liu P, Chalak LF, Krishnamurthy LC, Mir I, Peng SL, Huang H, Lu H. Liu P, et al. Magn Reson Med. 2016 Apr;75(4):1730-5. doi: 10.1002/mrm.25775. Epub 2015 May 18. Magn Reson Med. 2016. PMID: 25981985 Free PMC article. - 3.0 Tesla imaging of the musculoskeletal system.
Kuo R, Panchal M, Tanenbaum L, Crues JV 3rd. Kuo R, et al. J Magn Reson Imaging. 2007 Feb;25(2):245-61. doi: 10.1002/jmri.20815. J Magn Reson Imaging. 2007. PMID: 17260407 Review. - My starting point: the discovery of an NMR method for measuring blood oxygenation using the transverse relaxation time of blood water.
Thulborn KR. Thulborn KR. Neuroimage. 2012 Aug 15;62(2):589-93. doi: 10.1016/j.neuroimage.2011.09.070. Epub 2011 Oct 6. Neuroimage. 2012. PMID: 22001265 Review.
Cited by
- Elevated cerebral perfusion in neonatal encephalopathy is associated with neurodevelopmental impairments.
Tuura RO, Kottke R, Brotschi B, Sabandal C, Hagmann C, Latal B. Tuura RO, et al. Pediatr Res. 2024 Sep 17. doi: 10.1038/s41390-024-03553-1. Online ahead of print. Pediatr Res. 2024. PMID: 39289590 - Establishment and validation of an extracellular volume model without blood sampling in ST-segment elevation myocardial infarction patients.
Chen L, Zhang Z, Du X, Liu J, Liu Z, Chen W, Che W. Chen L, et al. Eur Heart J Imaging Methods Pract. 2024 Jun 10;2(1):qyae053. doi: 10.1093/ehjimp/qyae053. eCollection 2024 Jan. Eur Heart J Imaging Methods Pract. 2024. PMID: 39224096 Free PMC article. - Three-dimensional pseudocontinuous arterial spin labeling with dual postlabeling delay for reflecting cerebral blood flow regulation in patients with hydrocephalus: a retrospective cross-sectional study.
Xiao Y, Chen S, Zhang Z, Huang J, Gui Y, Luo D, Deng X, Dai J, Xiao X. Xiao Y, et al. Quant Imaging Med Surg. 2024 Aug 1;14(8):5861-5876. doi: 10.21037/qims-24-151. Epub 2024 Jul 30. Quant Imaging Med Surg. 2024. PMID: 39143996 Free PMC article. - Effect of simultaneous multislice imaging, slice properties, and repetition time on the measured magnetic resonance biexponential intravoxel incoherent motion in the liver.
Loh M, Führes T, Stuprich C, Benkert T, Bickelhaupt S, Uder M, Laun FB. Loh M, et al. PLoS One. 2024 Aug 9;19(8):e0306996. doi: 10.1371/journal.pone.0306996. eCollection 2024. PLoS One. 2024. PMID: 39121035 Free PMC article. - Hyperpolarized Water for Coronary Artery Angiography and Whole-Heart Myocardial Perfusion Quantification.
Zhao Y, Lerche MH, Karlsson M, Olin RB, Hansen ESS, Aastrup M, Redda M, Laustsen C, Hanson LG, Ardenkjær-Larsen JH. Zhao Y, et al. Tomography. 2024 Jul 13;10(7):1113-1122. doi: 10.3390/tomography10070084. Tomography. 2024. PMID: 39058056 Free PMC article.
Publication types
MeSH terms
Grants and funding
- P41 EB015909/EB/NIBIB NIH HHS/United States
- P41-RR15241/RR/NCRR NIH HHS/United States
- R01-NS37664/NS/NINDS NIH HHS/United States
- R21-EB000991/EB/NIBIB NIH HHS/United States
LinkOut - more resources
Full Text Sources
Other Literature Sources
Medical