To further investigate the effects of large vessels on the activation maps generated with functional magnetic resonance imaging at 1.5 T, we studied activation of the human visual and motor cortex using a multitude of dedicated FLASH and echo-planar imaging (EPI) scanning techniques. Both slice and
The effects of 1.5T magnetic resonance imaging on early murine in-vitro embryo development
โ Scribed by Stephen Chew; Ali Ahmadi; P.S. Goh; L.C. Foong
- Publisher
- John Wiley and Sons
- Year
- 2001
- Tongue
- English
- Weight
- 54 KB
- Volume
- 13
- Category
- Article
- ISSN
- 1053-1807
No coin nor oath required. For personal study only.
โฆ Synopsis
Abstract
Although no ionizing radiation is involved, patients undergoing magnetic resonance imaging (MRI) are exposed to powerful static magnetic fields, magnetic field gradients, and radioโfrequency fields that may be potentially damaging. Our study aims to document the effect of MRI imaging sequences on early murine embryo development (twoโcell to blastocyst stage) in vitro. Twoโcell murine embryos were exposed to various lengths of MRI using pulse sequences employed in present day clinical imaging. Early murine embryo development was documented in vitro, and blastocyst development rates were computed for both the control and exposed groups. There were no significant differences detected in the rate of blastocyst formation between the control groups and the embryos exposed to MRI. J. Magn. Reson. Imaging 2001;13:417โ420. ยฉ 2001 WileyโLiss, Inc.
๐ SIMILAR VOLUMES
## Abstract The potential teratogenicity of magnetic resonance (MR) field exposure on the early development of the chick embryo was examined. Eggs at four developmental stages within the first 42 hours of incubation were exposed to a static magnetic field of 1.5 T for 6 hours and to 64โMHz radioโfr
## Abstract T1 and T2 relaxation times of agar phantoms containing Lโdopa melanin and Fe^3+^ were measured under MRI conditions. Fe^3+^ shortened T1 and T2 relaxation times. Melanin influenced relaxation times only in the presence of Fe^3+^; thus, contrast in MR images of the basal ganglia may depe
Background and Objective: Magnetic resonance imaging's (MRI) potential to monitor interstitial laser photocoagulation (ILP) has been previously demonstrated and is further tested here with improved spatial and temporal resolution. Study DesigniMaterials and Methods: In vivo experiments employed fibe