MRI

No.

Item

Specification

One

Equipment Introduction

1

Use

For all parts of the body MRI Scan

Two

Magnet System

1

magnetic field Strength

3.0T

2

Center frequency

127.7MHz

3

Magnet Type

Superconducting Magnet

4

Magnet Material

Niobium-titanium alloys

5

Anti-electromagnetic interference

Yes

6

Magnet stability

0.1 ppm/h

7

Uniformity of magnetic field

Typical values,

V-RMS measurements

7.1

10cm DSV

0.005ppm

7.2

20cm DSV

0.027ppm

7.3

30cm DSV

0.056ppm

7.4

40cm DSV

0.250ppm

7.5

45cm DSV

0.460ppm

7.6

50cm DSV

1.500ppm

8

Compensation technology of magnetic field shimming

Yes

9

Shim mode

Active uniform

field + passive leveling

10

Magnet weight (with liquid helium)

4600kg

11

Magnet length (excluding shell)

160cm

12

Patient aperture.

60cm

13

Cooling mode

Liquid helium

14

Liquid helium consumption rate

0

15

Volume of liquid helium

1450L

16

Cold head Type

4K Cold Head

17

5 Gauss line range

3.1m x 3.1m x 5.5m

Three

Gradient System

1

Gradient Control Technology

Full digital real Time

2

Gradient Cooling Mode

Water

3

Maximum gradient intensity

46mT/m

4

Maximal gradient slew rate

288T/m/s

5

Minimum gradient rise time

0.159ms

6

Maximum gradient field, maximum gradient switching rate and maximum FOV can

be achieved simultaneously

Yes

7

Max duty ratio

100%

8

Shielding mode

Active shielding

9

Gradient working mode

Non-resonant type

10

Gradient Noise Reduction

Technology

Yes

Four

RF System

1

Number of independent RF

sources

1 or 2

2

Number of independent RF

amplifiers

1 or 2

3

Each RF source can independently adjust the RF pulse phase, waveform,

amplitude

Yes

4

RF Transmitter Power

35kW or 18kW * 2

5

Max RF transmit field

20μT

6

RF Power Amplifier Type

Water-cooled / Digital Interface

7

Transmitter Coil auto tuning

Yes

8

Number of independent RF

channels

16 / 32

9

RF Receiver Sampling rate

100MHz

10

Receive dynamic range

(1Hz bandwidth)

140db

11

Noise coefficient

0.5dB

12

Full digital demodulation and filtering technology

Yes

13

RF Energy Monitoring

13.1

Real-time digital RF energy

Monitoring

Yes

13.2

Real-time digital RF energy

accumulation monitoring

Yes

13.3

Real-time digital RF energy

Yes

accumulation monitoring

14

RF receiver coils and related technologies

14.1

Orthogonal

transmitting / receiving

Yes

14.2

Head-neck coils

24 Channel

14.3

Body Coil

12 Channel

14.4

Spine Coil

18 Channel

14.5

Large Flexible

Multi-function coil

8 Channel

14.6

Breast Dedicated coil

8 Channel

14.7

Knee Dedicated coil

8 Channel

14.8

Shoulder Dedicated coil

Optional

14.9

Ankle Dedicated coil

Optional

14.10

AIT Scanning technology

Yes

14.11

Note: coil configuration is subject to the final contract

Five

Computer

1

CPU

3.4GHz

2

Number of processor digits

64bit

3

Memory capacity

8GB

4

Hard disk capacity

500GB

5

Image storage capacity (512

matrix)

0.6million

6

Display resolution

1920 x 1200

7

Display size and

specifications

24 inch

8

Maximum acquisition matrix

1024 x 1024

9

Maximum Reconstruction matrix

1024 x 1024

Six

Post-processing interface

1

Software Control camera

Technology

Yes

2

DICOM 3.0 interfaces  and PACS network connections (including print, transmit, receive,

query , worklist, MPPs )

Yes

3

Standard Laser Camera

Digital interface

Yes

Seven

Scan parameters

1

X axis Max FOV

500mm

2

Y axis Max FOV

500mm

3

Z axis Max FOV

500mm

4

Minimum FOV

5mm

5

Thinnest layer thickness

0.1mm

6

2D SE Shortest sequence TR time

(128 matrix)

7ms

7

2D SE Shortest sequence TE time (128 matrix)

2.4ms

8

2D FSE Shortest

sequence TR time (128 matrix)

7ms

9

2D FSE Shortest sequence TE time

(128 matrix)

2.4ms

10

2D FSE Sequence minimum echo spacing (128 matrix)

2.4ms

11

2D FSE sequence maximum

echo chain length (ETL)

512

12

2D GRE Shortest

sequence TR time (128 matrix)

1.0ms

13

2D GRE Shortest sequence TE time (128 matrix)

0.6ms

14

3D GRE Shortest

sequence TR time (128 matrix)

1.2ms

15

3D GRE Shortest sequence TE time

(128 matrix)

0.5ms

16

EPI Sequence minimum echo interval (128 matrix)

0.57ms

17

EPI Shortest sequence TR time

(128 matrix)

4.7ms

18

EPI Shortest sequence TE time

(128 matrix)

1.3ms

19

Maximum dispersion weighted b value

10000

Eight

Scanning technology and

sequence

1

Spin echo sequence (FSE)

Yes

1.1

2d/3d Fast spin echo

Yes

1.2

SE sequences measured by

tissue relaxation time

Yes

1.3

SE sequences with selectable

angles

Yes

1.4

Single echo, dual echo and multi-echo technology

Yes

1.5

Single excitation fast spin

echo sequence

Yes

1.6

Fat-sat sequence

Yes

1.7

Fast Fat saturation Technology

Yes

1.8

Water-sat sequence

Yes

1.9

Reverse recovery (IR)

Yes

1.10

General IR sequence

Yes

1.11

FLAIR

Yes

1.12

Fast T1-FLAIR

Yes

1.13

Fast T2-FLAIR

Yes

1.14

Rapid inversion recovery

sequence (fat-sat, water-sat)

Yes

1.15

Short TI inverse echo

water-fat separation imaging

Yes

1.16

“True” inversion recovery sequence (contrast imaging of gray-white matter)

Yes

2

Gradient echo (2d/3d),

including

Yes

2.1

Multi-layer gradient echo

Yes

2.2

2d/3d residual magnetization removal gradient echo technology

Yes

2.3

2d/3d residual magnetization

gradient echo technology

Yes

2.4

Heavy T2 weighted High

Contrast sequence

Yes

2.5

3D Gradient Echo Technology

Yes

2.6

Fast steady-state

progressive gradient Echo

Yes

2.7

Super-fast field echo

sequence

Yes

2.8

Three-dimensional imaging technology

Yes

3

Planar echo imaging (EPI)

Yes

3.1

Single-excitation planar

echo imaging technology

Yes

3.2

Multi-excitation planar echo

imaging

Yes

3.3

Spin echo EPI

Yes

3.4

Gradient echo EPI

Yes

3.5

Reverse EPI

Yes

3.6

High

resolution EPI Collection

Yes

4

Neuroimaging technology

Yes

4.1

High resolution anatomical

imaging

Yes

4.2

High resolution

three-dimensional imaging technology of inner ear

Yes

4.3

Full Spinal cord imaging

Yes

5

Diffusion imaging technology

Yes

5.1

ADC Imaging

Yes

5.2

Isotropic acquisition

Yes

5.3

Anisotropic acquisition

Yes

5.4

ADC Value Measurement

Yes

5.5

ADC-map

Yes

5.6

Automatic acquisition and

processing

Yes

5.7

Single-shot EPI

Yes

5.8

Multi-shots EPI

Yes

5.9

Real-time diffusion imaging

Yes

5.10

Automatically generate ADC diagram

Yes

5.11

Optional

optimization B value

Yes

6

Vascular imaging technology

Yes

6.1

Time Of Fly Technology (2d/3d)

Yes

6.2

Imaging technology of

arteriovenous separation

Yes

6.3

MTC technology

Yes

6.4

Maximum density projection technology

Yes

6.5

Variable reversal Angle RF technology

Yes

6.6

MIP

Yes

6.7

2d/3d Water Imaging

Technology (MRCP, MRU)

Yes

6.8

Real-time interactive MIP

Yes

7

Artifact removal technology

Yes

7.1

Fluid compensation

Yes

7.2

Respiratory compensation

Yes

7.3

Flow correction

Yes

7.4

Regional saturation

Technology

Yes

7.5

Deconvolution Artifact

Removal technology

Yes

7.6

Motion Artifact Elimination technology

Yes

7.7

Image filtering Enhancement

technology

Yes

7.8

K Space Noise Reduction

technology

Yes

7.9

Ring artifact suppression

Yes

8

Section-scan technology

Yes

8.1

Semi-scanning technology

Yes

8.2

Full directional partial coding acquisition technology

Yes

8.3

Rectangular FOV acquisition

technology

Yes

8.4

Three-dimensional overlapping continuous

acquisition technology

Yes

8.5

Parallel acquisition and reconstruction technology

Yes

8.6

Partial echo Acquisition

Yes

9

Other imaging technology

Yes

9.1

Short TR TE Fast Imaging

Yes

9.2

Three-dimensional

positioning system

Yes

9.3

Positioning technology of

radial slice layer

Yes

9.4

Scan pause

Yes

9.5

Variable Bandwidth

Yes

technology

9.6

Pre-scanning technology

Yes

9.7

Signal noise ratio display

function

Yes

9.8

Mute Scanning technology

Yes

9.9

Real-time interactive imaging

Yes

9.10

Real-time localization

Yes

9.11

Real-Time Interactive

parameter change

Yes

9.12

High Resolution imaging

Yes

9.13

Combined scan function

Yes

9.14

Water Saturation Technology

Yes

9.15

Pre-saturated technology

Yes

9.16

Maximum saturation zone

number

3

9.17

Parallel saturation Zone

Yes

9.18

Adjoin saturation Zone

Yes

9.19

Fat saturation Technology

Yes

9.20

Signal averaging technology

Yes

9.21

Frequency Coding Direction Extended acquisition

Yes

9.22

Phase coding direction

expands acquisition

Yes

9.23

Partial Center scanning

technology

Yes

9.24

Variable K space Filling method

Yes

9.25

K Fast Space Acquisition

Yes

9.26

Coil Sensitivity correction

technology

Yes

9.27

Enhancement technology

Yes

9.28

Correction technology of

image luminance uniformity

Yes

9.29

Automatic Center Scanning

technology

Yes

9.30

Image reconstruction Technology

Yes

9.31

Image interpolation

Amplification Technology

Yes

9.32

Image Distortion Correction

Technology

Yes

10

Advanced clinical application packages

Yes

10.1

Neuro Imaging software Package

Yes

10.2

Body Imaging software

Package

Yes

10.3

Bone and joint imaging

software Package

Yes

10.4

Tumor Imaging software Package

Yes

10.5

Breast Imaging software

Package

Yes

Nine

The patient examine

environment

1

Two-way patient call system

Yes

2

Magnetic noise-reducing

headphones

Yes

3

Aperture Ventilation system

Yes

4

Aperture lighting system

Yes

5

Embedded display

Yes

5.1

Patient monitoring System

Yes

5.2

Bedside Patient Control system

Yes

6

Patient Emergency call

Device

Yes

7

Maximum load bearing of

inspection bed

200KG

8

Minimum bed height for inspection beds

62cm

9

Maximum speed of horizontal

motion of scan bed

20cm/s

10

Scan bed Length

245cm

11

Maximum scanning range

>150cm

12

Multi-station stitching

Yes

13

Bedside Emergency brake

button

Yes

14

Bedside Switch

Yes

15

Breath gating

Yes