By a News Reporter-Staff News Editor at Biotech Week -- Investigators discuss new findings in Biotechnology. According to news originating from Winnipeg, Canada, by NewsRx correspondents, research stated, "Although MRI offers highly diagnostic medical imagery, patient access to this modality worldwide is very limited when compared with X-ray or ultrasound. One reason for this is the expense and complexity of the equipment used to generate the switched magnetic fields necessary for MRI encoding."
Our news journalists obtained a quote from the research from the National Research Council of Canada, "These field gradients are also responsible for intense acoustic noise and have the potential to induce nerve stimulation. We present results with a new MRI encoding principle which operates entirely without the use of conventional B-0 field gradients. This new approach - Transmit Array Spatial Encoding' (TRASE) - uses only the resonant radiofrequency (RF) field to produce Fourier spatial encoding equivalent to conventional MRI. k-space traversal (image encoding) is achieved by spin refocusing with phase gradient transmit fields in spin echo trains. A transmit coil array, driven by just a single transmitter channel, was constructed to produce four phase gradient fields, which allows the encoding of two orthogonal spatial axes. High-resolution two-dimensional-encoded in vivo MR images of hand and wrist were obtained at 0.2 T. TRASE exploits RF field phase gradients, and offers the possibility of very low-cost diagnostics and novel experiments exploiting unique capabilities, such as imaging without disturbance of the main B-0 magnetic field. Lower field imaging (technology) of moving through k space, there are many close analogies between it and conventional B-0-encoded techniques."
According to the news editors, the research concluded: "TRASE is compatible with both B-0 gradient encoding and parallel imaging, and so hybrid sequences containing all three spatial encoding approaches are possible."
For more information on this research see: High-resolution MRI encoding using radiofrequency phase gradients. NMR in Biomedicine, 2013;26(11):1602-1607. NMR in Biomedicine can be contacted at: Wiley-Blackwell, 111 River St, Hoboken 07030-5774, NJ, USA. (Wiley-Blackwell - www.wiley.com/; NMR in Biomedicine - onlinelibrary.wiley.com/journal/10.1002/(ISSN)1099-1492)
The news correspondents report that additional information may be obtained from J.C. Sharp, Natl Res Council Canada, Winnipeg, MB, Canada. Additional authors for this research include S.B. King, Q.L. Deng, V. Volotovskyy and B. Tomanek (see also technology.html">Biotechnology).
Keywords for this news article include: Biotechnology, Canada, Winnipeg, Manitoba, North and Central America
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