A different solution to the high field. History of Open MRI began with Hitachi.

A different solution to the high field


Гордиенко Елена Гарриевна

A different solution to the high fieldA different solution to the high field

History of Open MRI began with Hitachi



TwinTwin 　　 ConceptConcept 　　MRIMRI Дружественный дизайнДружественный дизайн 　　

・・ Ultra-Open ArchitectureUltra-Open Architecture

・・ Easy & Flexible Operation Easy & Flexible Operation

Отвечает требованиям, предъявленным к Отвечает требованиям, предъявленным к открытым МРТоткрытым МРТ

・・ Very EconomicalVery Economical

Высокая производительностьВысокая производительность

・・ Ultra-high SensitivityUltra-high Sensitivity

・・ High Power GradientHigh Power Gradient

Отвечает всем требованиям, предъявляемым к Отвечает всем требованиям, предъявляемым к высокопольным системамвысокопольным системам

・・ High Performance MagnetHigh Performance Magnet

・・ High Speed / Advanced TechnologyHigh Speed / Advanced Technology

・・ Compact Installation SpaceCompact Installation Space


Magnet Pole piece

Yoke

Column

Yoke

Designed 0.4T system with conventional technologies.

Weighing over 18 tons.

Технологии для повышения эффективности МРТ

Технологии для устранения потери

магнитного поля

Realized 0.4T system with only 13 tons.

Высокая производительностьВысокая производительность

Responds to the needs required for high magnetic field system.






“VOSI” technology Hitachi is proud of.

Since MRI is composed of many sub-systems, optimum integration is the key point for high image quality. Field strength is merely an element．

Advantageous points with VOSI technology are….(when compared with horizontal-field) 1. High sensitivity due to solenoid QD coil S/N : + 30% (Approx.) 2. Low noise amplifier (lower frequency, higher advantage) S/N : + 20% (Approx.) 3. Narrow band receiving circuit (with less chemical shift) S/N : + 20% (Approx.) 4. In addition, use of tight receiving coil improved filling factor (filling rate) largely, and realized further high sensitivity. As result of all above, receiving sensitivity of vertical magnetic field system is,

1.3 x 1.2 x 1.2 1.9≒This is approx.1.9 times higher than that of horizontal magnetic field system.Therefore, with APERTO

0.4(T) x 1.9 = 0.76

Image quality better than that of 0.76T can be obtained.

Vertical-Field with Optimized Sub-System Integration Technology

High frequency amplifier

Receiving circuit

Amplification S/N: 1.2 Band S/N: 1.2

Band S/N: 1.0

Solenoid QD coilS/N:1.3

Amplification S/N: 1.0





1.00.5

0.4APERTO

1.0T system

0.76

Filling factorS/N:1.0 ~

X 1.9Use of tight coils

Saddle QD coil

HighHigh 　　PerformancePerformance 　　Responds to the needs required for

high magnetic field system.


APERTO

Conventional gradient magnetic field

Large time reduction

Reduction of Rise-time

Strengthening of gradient magnetic field

High definition image

Powerful 22mT/m gradient magnet field strength.Corresponds to such high function sequence as EPI.






high magnetic field system 　

APERTO


Высокая скорость исследований High magnetic field strength and powerful gradient magnetic field bring forth overwhelming reduction effect of imaging time.

Imaging can be finished within a half of time required with conventional 0.5T SCM system.








High ThroughputHigh Throughput 　　

Whole head scan can be done in about 20min. (incl. setting time)

　 APERTO 1.0T

MRA 08:04min 06:30minT1WI 02:37min 02:30minT2WI 02:48min 03:00minFLAIR 03:58min 04:00min

Total 17:27min 16:00min








T1WI 　 2 ： 37 T ２ WI 　 2 ： 48 FLAIR 　 3 ： 58






high magnetic field system

APERTO


２ D-TOF MRA 　 8 ： 04







APERTO


Echo Planner Imaging・ Fast imaging using single-shot EPI

・ Distortion-free high quality imaging using multi-shot EPI

Hitachi has realized the first Multi-shot EPI by the vertical magnetic field system


SS EPI MS EPI

Fast imagingFast imaging








T1WI 18s 15fr. T2WI 18s 15fr.

Breath Hold ScanHigh speed imaging method using Multi-shot FSE







APERTO


APERTO

T2WI 　 3:38 　 T1WI 　 3:13 T2WI 　 4:49 T2*WI 　 5:36








APERTO

T2WI 　 6:20 T1WI 　 5:56 T2WI 　 4:56 T1WI 　 4:55








Breath Hold 　 MRCP 　 7s







APERTO


T2*WI 　 5:20 　　　　　 T1WI 　 5:56 　 Fat suppression T2*WI 　 5:20







APERTO


3D – Balanced SARGE 2mm (512x512) 4:52







APERTO


T2*WI 　 5:07 　　　　 T1WI 　 4:29 　　 Fat suppression T2*WI 　 5:00





HighHigh 　　PerformancePerformance 　　

APERTO

Responds to the needs required for high magnetic field system.


210°

70°

AIRIS －Ⅱ

320°

APERTO

FriendlyFriendly 　　DesignDesign 　　


・・ Easy and Flexible OperationEasy and Flexible Operation・・ Very EconomicalVery Economical 　　

Responds to the needs required for Open-MRIResponds to the needs required for Open-MRI



Minimum installation space

3(m)Required area for Examination

Room: standard 20m²

Machine room is unnecessary.

Water cooling facility is unnecessary.

Compact system consisting of 4 units







Minimum running cost

Economical and Economical and excellent installation conditionsexcellent installation conditions

Neither helium nor cooling water is required. Power consumption is approx. 3KW, that is, 1/10th~ 20th in other systems

Equipment cost

Operation cost (Running cost)

5-years’ total cost

Cost (M\)

Cost

(k\/

month)

Cost (M\)

Shield room Air-conditioner Water-cooling facility

Resistive

magnet First year 2nd year 3nd year 4nd year 5nd year

APERTO

0.5T system

Resistive magnet system

Balance

Differences of the running cost, equipment cost, and 5-years’ accumulated expenses are clear







Transversal movement inside gantry

Transversal movement by 300mm covers both shoulders

Positioning with a single action using operation panel or footswitch









Date post:	29-Jan-2016
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A different solution to the high field. History of Open MRI began with Hitachi.

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