Data from: Investigation of parallel radiofrequency transmission for the reduction of heating in long conductive leads in 3 tesla magnetic resonance imaging

McElcheran CE, Yang B, Golenstani-Rad L, Graham SJ

Date Published: August 5, 2015

DOI: http://dx.doi.org/10.5061/dryad.53bh1

 

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Title Axial Image with 4-element PTX coil in suppression mode
Downloaded 6 times
Description Axial slice through center of phantom obtained with GRE sequence (TR = 2000 ms, TE = 40 ms, slice thickness = 10 mm, in-plane resolution = 256x256, FOV = 24 cm) with 4-Element PTX operating in suppression mode (phase shifts of 40, 16, 200 and 301 degrees). Dicom file for image shown in manuscript.
Download AxialGREwPTX.dcm (145.2 Kb)
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Title Coil Geometry
Downloaded 6 times
Description Contains specs about the geometry of the coil configurations (including capacitance values) for the simulations.
Download CoilGeometry.txt (466 bytes)
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Title Birdcage Heating
Downloaded 6 times
Description Temperature probe measurements for heating at tip of wire 12 cm long copper wire in a polyacrylic acid cylindrical phantom (radius = 9 cm, height = 24 cm) using FRFSE sequence (TR = 559 ms, TE = 100 ms, echo train length = 24, 1 slice, imaging time = 4:08). Excitation with transmit/receive GE birdcage coil with transmit gain of 153.
Download Birdcage Heating Test 1 TX153.txt (176.2 Kb)
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Title PTx Quadrature Heating
Downloaded 3 times
Description Temperature probe measurements for heating at tip of wire 12 cm long copper wire in a polyacrylic acid cylindrical phantom (radius = 9 cm, height = 24 cm) using FRFSE sequence (TR = 559 ms, TE = 100 ms, echo train length = 24, 1 slice, imaging time = 4:08). Excitation with 4-element parallel transmit coil with phase shifts of 0, 90, 180 and 270 degrees between elements with transmit gain of 195
Download PTx Quad Heating Test 1 TX195.txt (143.3 Kb)
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Title PTx Suppression Heating Test 1
Downloaded 4 times
Description Temperature probe measurements for heating at tip of wire 12 cm long copper wire in a polyacrylic acid cylindrical phantom (radius = 9 cm, height = 24 cm) using FRFSE sequence (TR = 559 ms, TE = 100 ms, echo train length = 24, 1 slice, imaging time = 4:08). Excitation with 4-element parallel transmit coil with phase shifts of 40, 16, 200 and 301 degrees (suppression mode) with a transmit gain of 190
Download PTx Suppression Heating Test 1 TX190.txt (149.5 Kb)
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Title PTx Suppression Heating Test 2
Downloaded 5 times
Description Temperature probe measurements for heating at tip of wire 12 cm long copper wire in a polyacrylic acid cylindrical phantom (radius = 9 cm, height = 24 cm) using FRFSE sequence (TR = 559 ms, TE = 100 ms, echo train length = 24, 1 slice, imaging time = 4:08). Excitation with 4-element parallel transmit coil with phase shifts of 40, 16, 200 and 301 degrees (suppression mode) with a transmit gain of 187. Second measurement.
Download PTx Suppression Heating Test 2 TX187.txt (144.7 Kb)
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Title E-field increase as function of wire position
Downloaded 35 times
Description Folder containing two files with % increase in E-field magnitude at tip of wire vs minimum in field of view for varying radial position (RposRatio.csv) and z position (ZposRatio.csv)
Download WirePos.zip (664 bytes)
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Title Simulation data for wire at r = 2.5 cm, z = 0 cm (E-field and H-field)
Downloaded 31 times
Description Contains simulation data for wire positions r = 2.5 cm, z = 0 cm. Includes data for a 16-rung birdcage coil operating in quadrature mode and a 2-element PTX coil, 4-element PTX coil and 8-element PTX operating in suppression mode (amplitudes and phases found in manuscript). Each folder contains a folder named 'XY plane' corresponding to data in the z = 0 cm plane, x = -10 cm to x = 10 cm, y = -10 cm to 10 cm and 'YZ plane' corresponding to data in the x = 0 cm plane, z = -12 cm to 1 cm, y = -10 cm to 10 cm. Each file is named: <Coil config><field><plane>_<radial pos of wire>.txt. The files are space delimited. Header of 15 lines.
Download Leadat25mm.zip (7.026 Mb)
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Title Simulation data for wire at r = 8 cm, z = 2 cm (E-field and H-field)
Downloaded 35 times
Description Contains simulation data for wire positions r = 8 cm, z = 2 cm. Includes data for a 16-rung birdcage coil operating in quadrature mode and a 2-element PTX coil, 4-element PTX coil and 8-element PTX operating in suppression mode (amplitudes and phases found in manuscript). Each folder contains a folder named 'XY plane' corresponding to data in the z = 0 cm plane, x = -10 cm to x = 10 cm, y = -10 cm to 10 cm and 'YZ plane' corresponding to data in the x = 0 cm plane, z = -12 cm to 1 cm, y = -10 cm to 10 cm. Each file is named: <Coil config><field><plane>_<radial pos of wire>.txt. The files are space delimited. Header of 15 lines
Download Leadat80mmz2cm.zip (12.87 Mb)
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Title Simulation data for wire at r = 7.5 cm, z = 0 cm (E-field and H-field)
Downloaded 30 times
Description Contains simulation data for wire positions r = 7.5 cm, z = 0 cm. Includes data for a 16-rung birdcage coil operating in quadrature mode and a 2-element PTX coil, 4-element PTX coil and 8-element PTX operating in suppression mode (amplitudes and phases found in manuscript). Each folder contains a folder named 'XY plane' corresponding to data in the z = 0 cm plane, x = -10 cm to x = 10 cm, y = -10 cm to 10 cm and 'YZ plane' corresponding to data in the x = 0 cm plane, z = -12 cm to 1 cm, y = -10 cm to 10 cm. Each file is named: <Coil config><field><plane>_<radial pos of wire>.txt. The files are space delimited. Header of 15 lines
Download Leatat75mm.zip (7.003 Mb)
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When using this data, please cite the original publication:

McElcheran CE, Yang B, Golenstani-Rad L, Graham SJ (2015) Investigation of parallel radiofrequency transmission for the reduction of heating in long conductive leads in 3 tesla magnetic resonance imaging. PLOS ONE 10(8): e0134379. http://dx.doi.org/10.1371/journal.pone.0134379

Additionally, please cite the Dryad data package:

McElcheran CE, Yang B, Golenstani-Rad L, Graham SJ (2015) Data from: Investigation of parallel radiofrequency transmission for the reduction of heating in long conductive leads in 3 tesla magnetic resonance imaging. Dryad Digital Repository. http://dx.doi.org/10.5061/dryad.53bh1
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