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Chapter 5
3
Nvidia GPU card, that enhance the calculating capacity and allow the
use of the SpeedUp 3D function.
Electronic box
It comprises:
1
the ACM card, which performs the functions described below.
•
Digital synthesizing:
a) generating the RF transmission pulse, with variable frequency,
amplitude, duration and phase;
b) selecting, from the DSP, one of 16 different transmission pulse
developments.
•
acquisition:
a) transmitting acquisition data to the DSP1;
b) analog drive of the reception gain values and variable capacitors
of the receiving coils;
c) selecting and monitoring signals from the gradient amplifier
(GRA), magnetic compensation, temperature sensors, heaters,
variable capacitors of the receiving coils and RFA module;
d) demodulation, in phase and quadrature, of the MR signal
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reception of the MR signal, of the receiving coils, via two
independent channels.
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analog conversion to 3 MHz of MR signal of each channel.
•
gain amplification of each channel.
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coil recognition
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control of 3.5" display present on the DIM unit.
2
the TCM card, which performs the functions described below.
•
compensation of magnetic disturbance
•
management of signal from temperature sensors for thermal
control of magnetic unit
•
power supply of the DIM module.
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analysis of fields generated by the gradients.
3
the SRN card, which enables modulation of the resistive value of the
sensors via a resistance for each channel.
4
the RISC card, used for filtering the signal between the HEATER card
and TCM card.
GRA Gradient amplifier
The gradient amplifier supplies the required voltage and current values to
the gradient coils to generate a magnetic field of 20 mT/m.
It comprises the CGM card, which performs the functions described below:
Содержание O-scan eXP
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Страница 3: ...O scan User Manual 350004900 Rev 07 Esaote S p A Genoa...
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Страница 32: ...8 8 Chapter 2...
Страница 51: ...350004900 Rev 07 19 48 Instructions for Safe Use fig 3 1 Top view...
Страница 52: ...20 48 Chapter 3 fig 3 2 Side view...
Страница 80: ...48 48 Chapter 3...
Страница 102: ...22 22 Chapter 4...
Страница 105: ...350004900 Rev 07 3 20 Technical Description fig 5 1 Equipment components...
Страница 122: ...20 20 Chapter 5...
Страница 126: ...4 20 Chapter 6 fig 6 3 The O scan Premium and O scan eXP patient seat with armrests fig 6 4 Armrest detail...
Страница 142: ...20 20 Chapter 6...
Страница 155: ...350004900 Rev 07 7 8 Coils fig 8 5 Spherical uniform phantom fig 8 6 Cylindrical uniform phantoms...
Страница 156: ...8 8 Chapter 8 fig 8 7 Geometric phantom fig 8 8 Centering support for the spherical phantom diameter 140 mm...
Страница 160: ...4 10 Chapter 9 fig 9 4 Lumbar support cushion fig 9 5 Positioning of the lumbar support cushion on the seat...
Страница 161: ...350004900 Rev 07 5 10 Soft cushion Set fig 9 6 Use of lumbar support cushion...
Страница 184: ...10 10 Chapter 11...
Страница 232: ...4 4 Chapter 17...
Страница 236: ...4 4 Chapter 18...