Doty Scientific, Inc
- High-field MRI Coil
- Solid NMR Probe
- Liquids NMR Probes
- Diffusion/PFG Probes
- Supplies and Accessories
高磁場MIRコイル (High-field MRI Coil)
Doty 社の Litzコイル、Litzcageコイルは高い均一性と S/Nを提供します。 小動物用イメージングコイルや人の頭部、膝、その他末端部分で使用するコイルを用意しています。
製品一覧
- Human Head RF imaging Coils
- Human Knee, Other Extrmities, or Primate Head RF Imaging Coils
- Small-Animal Imaging Platform
- Shielded linear Litz or CP Lizcage
- Vertical Bore Gradient Probes
- Surface Coils
(PDF:185kB) - MRI 3 Axis Gradient Coils
- Head Gradient Coil R&D
Below are a few of the many MRI coils and probes we are proud to have delivered.
- 750 MHz vertical narrow-bore imaging probe with a 19 mm x 18 mm (length), rf Litzcage(quadrature) coil.
- Primate head imaging 3 T rf Litz coil, 25 cm x 18 cm, double-tuned with multinuclear X channel.
- 20 cm x 25 cm, 200 MHz quadrature rf Litzcage module for rabbit imaging.
- 3 T knee rf Litz coil imaging module, 15 cm x 11 cm.
- Rat imaging coil platform with a 50 mm x 30 mm quadrature rf Litzcage coil. The coil was tuned to 200 MHz.
固体NMRプローブ (Solid NMR Probe)
様々な固体 NMR 用 MAS プローブを提供しています。また、Wideline プローブ、 Flat-coil プローブ、Single-crystal NMR プローブのような Non-spinning NMR プローブも提供することが可能です。
製品一覧
- OptiMAS Probes
- XC MAS Probes
- High-Temperature CPMAS Probes
- TXI-SAS Probes
- Non-spinning NMR Solids Probes
- Cryo-coil MAS Probes(in development)
- HR-MAS Magic Angle Gradient Probes
液体NMRプローブ (Liquid NMR Probe)
Many in the field of NMR immediately relate Doty Scientific with Solids NMR. We are proud of our contributions to NMR Solids, however, we would like people to know more about our contributions to liquids NMR as well.
Doty Scientific, an established leader in large-sample high-resolution coil technology and solids NMR, is using the latest in laser cutting, compensated laminates, and thermal gradient minimization with alumina coilforms to bring its Super-B1 coils to the field of high-resolution liquids NMR.
Following are examples of custom liquids high-resolution probes designed and built by Doty Scientific :
- 25 mm 1H/X liquids probe at 9.4 T
- 10mm 1H/19F/X/lock, 400MHz WB, Multi-X, Triple
- 10mm 1H/X/Y/lock, 500MHz NB, Multi-X, Multi-Y, Triple
- 10mm 1H/X/lock, 300MHz WB, Multi-X, -170℃ to 500℃
- 5mm 1H/X/lock, 600MHz NB, Inverse, PFG, 200G/cm continuous
- 5 mm 1H-19F/X/Y, 300 MHz NB, Inverse, Triple, PFG, -170°C to 300℃
- 15 mm 1H/X, 600 MHz NB, Multi-X, Microscopy, 25 G/cm continuous
- 15 mm 1H/19F/X, 600 MHz WB, Electrophoresis, PFG, 140 G/cm continuous
- 40 mm 1H/19F, 400 MHz WB, Microscopy Clear Bore, 14 G/cm continuous
- 18 mm 1H/X/lock, 600 MHz, NB, In-vivo
- 5 mm 1H/X/lock, 1067 MHz (1.07 GHz) NB Multi-X, PFG, 77 G/cm continuous
- 10 mm 1H/X/lock, 300 MHz High Temp PFG, 500°C
拡散/磁場勾配プローブ (Diffusion/PFG Probes)
Which gradient coil is preferred for most NB applications? The 20-40C allows a longer sample region than the 16-38 and shims a little better, so it permits higher S/N but requires a larger gradient amplifier. Both coils are widely used
| Parameter | Model 16-38 |
Model 20-40C |
Model 47-70 |
|---|---|---|---|
| Outside diameter (mm) | 38 | 39 | 70 |
| Diameter of rf shield (mm) | 16 | 20 | 50 |
| Clear I.D. (mm) | 14 | 17.5 | 47 |
| Cooling method | Water | Water | Water |
| Continuous guradient (G/cm) | 380 | 180 | 75 |
| Continuous guradient (T/m) | 3.8 | 1.8 | 0.75 |
| Pulse guradient (G/cm) | 3800 | 1100 | 480 |
| Duty cycle | 1% | 2.5% | 2.5% |
| Gradient gain (mT/A/m) | 480 | 180 | 30 |
| Continuous current (A) | 8 | 10 | 25 |
| Peak current (A) | 80 | 60 | 160 |
| DC resistance, RE (Ohm) | 1.6 | 1.5 | 0.7 |
| Inductance, L (uH) | 130 | 200 | 170 |
| Slew rate, at 1V (T/m/s) | 3700 | 900 | 180 |
Local deviation (or differential linearity) is defined as the rms deviation from the mean gradient over the specified diameter, di, and length, zi, of the cylindrical sample region. Eddy currents from the internal RF shield are negligible. The gradient slew rate GS is the instantaneous rate of change in gradient when a 1 V step is applied. The continuous current ratings are true continuous ratings for a single axis with no time limit and adequate cooling.
アクセサリー (Supply and Accessories)
When a new product is ordered, appropriate accessories are quoted and provided at the time of the sale. However, there are additional items such as spin and temperature control products, or bench spinners that you might want to purchase to upgrade your system after the original purchase. Some items, like rotors and caps, need to be replaced from time to time, or you may just need more. The following may assist you in finding the accessories you may need.
- Probe spin and temperature controllers
- Temperature control accessories
- Bench spinners
- Rotors, cpas, and other accessories
- Spin detection preamps and accessories
- Accessories for specialized or previous generation probes
- Susceptibility matched plugs
