MHI (7T Agilent)

Technical Specifications

Characteristics

Larmor frequency: 299.94MHz

305/210 HD Gradient Coil

ACTIVELY SHIELDED GRADIENTS AND SHIMS. The gradient is water cooled to allow for high duty cycle experiments. The room temperature shim set has been specifically designed to minimize coupling between gradients and shims during pulsing. The gradient set is fully vacuum impregnated to minimize mechanical vibration and noise.

Outer Diameter: 305 mm
Internal Diameter: 210 mm
Gradient strength: Maximum at 300 A: 300 mT/m
Duty cycle at 300mT/m: 14%
Rise time to 98% of max gradient at 300V: 638 microseconds
Linearity over 120 mm dsv: 5% (X/Y/Z)
Shim configuration: extra strong 2nd order

205/120 HD Gradient Coil

ACTIVELY SHIELDED GRADIENTS AND SHIMS The gradient is water cooled to allow for high duty cycle experiments. The room temperature shim set has been specifically designed to minimize coupling between gradients and shims during pulsing. The gradient set is fully vacuum impregnated to minimize mechanical vibration and noise. This gradient coil can be configured either as the main coil or as an insert coil.

Outer Diameter: 205 mm
Internal Diameter: 120 mm
Gradient strength: Maximum at 300 A: 600 mT/m
Duty cycle at 600mT/m: 14%
Rise time to 98% of max gradient at 300V: 135 microseconds
Linearity over 80 mm dsv: 5% (X/Y/Z)
Shim configuration: extra strong 2nd order

Coils

1H 140/184mm, 300MHz Quad Birdcage Coil

DESCRIPTION: This birdcage coil is designed for 1H quadrature detection imaging applications. The coil design is a standard 16-element birdcage coil with 14 cm sample diameter, which is suitable for medium size animals imaging. Dimension Specifications:

  • Coil OD: 7.25 inch (184 mm)

  • Coil ID: 5.50 inch (140 mm)

  • RF window length: 6.50 inch (165 mm)

  • Coil housing length: 12.50 inch (318 mm)

  • Distance from front face of coil to isocenter: 6.25 inch (159 mm)

  • Coil Design: 16 element birdcage

  • Transmit/Receive

  • Quadrature polarization

  • Maximum RF (Peak) power 1000 Watt

  • Resonance frequency 300 MHz

  • Manual tuning by rods

  • Tuning Range ~ 8 MHz

  • BNC connectors for RF channels

  • Compatible with Varian Swift Positioning System, 7T/310 and Varian Sample Positioning Kit for 210 mm gradient

  • Tunable object ~1L (made for 3kg rabbits)

1H 38/108mm, 300MHz Quad Birdcage Coil

DESCRIPTION: This birdcage coil is designed for 1H quadrature detection imaging applications. The coil design is a standard 16-element birdcage coil with 38 mm sample diameter, which is optimized for rat head imaging. Dimension Specifications:

  • Coil OD: 4.25 inch (108 mm)

  • Coil ID: 1.50 inch (38 mm)

  • RF window length: 2.16 inch (55 mm)

  • Coil housing length: 4.50 inch (114 mm)

  • Distance from front face of coil to isocenter: 2.75 inch (57 mm)

  • Coil Design: 16 elements birdcage

  • Transmit/Receive

  • Quadrature polarization

  • Maximum RF (Peak) power 1000 Watt * Resonance frequency 300 MHz

  • Manual tuning by rods

  • Tuning range ~ 8 MHz

  • Max sample size for tuning: ~150g

Data Collection

Get Data

Acquired images at MHI are automatically transferred daily. They are accessible from:

Standard Operating Procedure - Reconstructing RAW data MHI-7T

Follow instructions here: SOP