Siemens ESSENZA 1.5T

Refurbished, Used MRI Scanners

Siemens ESSENZA 1.5T

The Siemens ESSENZA 1.5 Tesla is Siemens' affordable, reliable powerhouse that will support both clinical and financial success. The ESSENZA is an ultra-short, lightweight 1.5 Tesla MR system offering clinical flexibility, accuracy, the speed of Tim (Siemens' Total Imaging Matrix), and the new IsoCenter Matrix coil. The Siemens ESSENZA was developed as an affordable system that is easy to site, to learn, to operate, to maintain, and light on the budget.

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ESSENZA Tech Specs (Technical Specifications)

Siemens ESSENZA 1.5 Tesla Magnet

• Configuration: Superconductive, short bore
• Strength: 1.5 T
• Homogeneity, ppm V-RMS: 7.5 (typical 6 ppm) ppm @ 45 x 45 x 30 cm DSV, 2.2 (typical 1.9) ppm @ 40 x 40 x 30 cm DSV, V-RMS (based on 24-plane plot)
• Dimensions of maximum useful FOV and homogeneity, (x, y, z): 45 x 45 x 30 cm
• Frequency drift, ppm/day: <0.1 ppm/hr
• Shielding: Active, EIS (external interference shielding)
• Main magnet shimming: Active, passive
• Patient specific shimming: 3 linear terms (Standard) and second-order shim (Standard)
• Cryogen refill frequency: Refill typical 10 years; zero Helium boil-off technology

ESSENZA Gantry

• Bore diameter/height of patient opening: 60 cm
• Overall bore length: 145 cm, cover to cover
• Bore length with minimum opening: 103 cm
• In-bore patient comfort features: In-bore lighting (3 levels), in-bore ventilation (3 levels), in-bore intercom, look-out mirror, patient supervision monitor

RF / Gradient System

• Standard name: V engine
• Standard strength, z-axis, mT/m: 30 true each axis value; 52 vector summation
• Standard slew rate, z-axis, T/m/s: 100 true each axis value; 173 vector summation
• Cooling type: Water cooled for highest duty cycle
• Amplifier max power/axis, kW: 500 V engine
• Amplifier cooling type: Standard cooling, optional chiller

DICOM

• Modality worklist SCU: Standard
• MR Image Storage SCU: Standard
• Query/Retrieve SCU and SCP: Standard
• Storage commitment SCU: Standard
• Modality performed procedure step SCU: Standard
• IHE profiles supported: Standard

ESSENZA Planning and Installation

• Overall gantry dimensions (including covers), W x H x L: 2.11 x 1.31 x 2.14 meters (includes patient table)
• Minimum ceiling height: 2.4 m
• Extent of fringe field (0.5 mT, 5 gauss) in x, y, z directions: 2.5 m (x, y), 4 m (z)
• Total weight w/cooling, shielding, gradient/body coil: 4,350 kg (9,570 lb)
• Minimum dimensions of opening required for installation, W x H: 2.26 x 1.83 m
• Minimum installation area for magnet: <30 m2
• Minimum total installation area for system: <30 m2
• Total number of cabinets required: 2, can be placed against the wall or in corner

Power Consumption

• Line Voltage, VAC: 380, 400, 420, 440, 460, 480 V
• Kva: 45
• Clinical Use: Whole body

Image processor

• Clock speed, GHz: 2
• Operating system: Windows
• Dedicated RAM: 4 GB, 144 GB dedicated raw data capacity

Image Reconstruction    

• Maximum number of 256 x 256 slices per acquisition sequence: 110,000 images at 512 x 512, uncompressed
• Number of slices per sec (256 matrix): =2773 recons/sec (256 x 256 FFT, 25% recFOV); =983 recons/sec (256 x 256 FFT, full FOV); simultaneous scan and reconstruction =8 data sets
• Maximum matrix: 1024 x 1024
• Minimum slice thickness 2-D/3-D: 0.1/0.05 mm
• Minimum FOV: 0.5 cm
• Maximum FOV: 45 cm, 30-35 cm typical in z

Quantitative image analysis tools    

• Perfusion imaging: Standard calculation time-to-peak maps; optional inline perfusion (GBP, PBP, TTP)
• fMRI: FuncTool standard; standard calculation time-to-peak maps; optional inline perfusion (GBP, PBP, TTP)
• Diffusion imaging: StandardADC map calculation; optional inline diffusion (real-time calculation trace and ADC maps)
• Diffusion tensor imaging: Standard MDDW, 6 and 12 directions; optional DTI sequence up to 256 directions
• Cardiac imaging: Standard with cardiac suite
• Cine: Standard
• Coronary artery: Optional
• Body imaging: Standard 1-D, 2-D PACE, dynamic analysis package includes addition, subtraction, division, multiplication, ADC maps, T1, T2, z-score, TTP, standard deviation
• 3-D image reconstruction: Standard MIP, targeted MIP, MPR (including curved reconstructions), surface shaded display, MinIP; optional image fusion, vessel view, 3-D VRT, fly through

Acoustic Noise

• Sound pressure level (SPL) at peak gradient amplitude and slew rate, dB(A): 93 V engine
• Reduction technology: Antivibration mounting, noise reduction, systems integration, whisper mode, others

ESSENZA Scanning Techniques

• Echo Planar Imaging: Yes, standard
• Single shot: Standard; SE, FID
• Multi shot: 2-D/3-D segmented; SE and FID
• EPI pulse sequences: Standard
• Maximum EPI factor: 256
• Neurologic imaging: Standard
• Perfusion: Standard
• Diffusion weighted imaging: Standard
• Functional MRI: StandardBOLD sequence; optional inline BOLD sequence, 3-D PACE
• Spectroscopy (nuclei of interest): Optional single voxel spectroscopy, CSI for hydrogen nuclei (STEAM, spin echo techniques)
• MRA: Standard
• Time of flight: Standard 2-D/3-D TOF, ceMRA
• Peripheral: Standard ceMRA protocols
• Bolus tracking: Standard bolus tracking protocols, Care Bolus
• Interventional MR: Optional
• Ecg gating: CG triggering
• Motion compensation: Yes
• Prospective respiratory gating: Standard 2-D PACE
• Maximum number of dimensions: Up to 6
• Additional (Alarms, high/low): Third-party compatible coils, CP head array

Siemens ESSENZA Coils

• Integrated body: Standard
• Type: Array, receive only, PA (peripheral angio) matrix
• Number of independent channels: 30-60 x 27
• Head: Standard
• Diameter, cm: Array, receive only, double loop
• Number of elements: Varied, can be combined with matrix coils
• Number of independent channels: 8
• Parallel imaging compatible: Yes, in combination with other coils
• Mirrors for patient head: Yes
• Tmj: Optional
• Number of element: Varied, can be combined with matrix coils
• Neck: Standard
• Coverage (head to foot): 19 cm
• Cardiac/abdomen: Standard
• CTL spine: Standard
• Dimensions, L x W, cm: 32 x 30 cm
• Coverage (head to foot), cm: Full fov
• Number of elements: Varied, can be combined with matrix coils
• Flexible: Yes
• Number of elements: varied, can be combined with matrix coils
• Shoulder: Optional
• Breast: Optional
• Bilateral: Yes
• Biopsy access: Yes
• Dimensions, L x W: 18 x 16.8 x 18.6 cm (H), small; 18 x 16.8 x 18.6 cm (H), large
• Circular general-purpose: Optional
• Whole abdomen: Optional
• Extremity: Lower: Optional; Upper: Standard
• Dimensions, L x W: 30 x 30 cm
• Number of elements: Varied, can be combined with matrix coils
• Endocavity: Optional
• Diameter: 17 x 36 cm, small; 21 x 52 cm, large: 27 x 29 cm
• Length: 40.5 cm
• Length: 17 x 36 cm, small; 21 x 52 cm, large
• Number of independent channels: 30-60 x 27
• Peripheral vascular: Optional
• Diameter: 30-60 cm x 27 cm
• Length: 97 cm
• Number of elements: 16
• Diameters available: 4 cm, 19 cm
• Dedicated parallel imaging: All coils iPAT compatible; dedicated coils not necessary
• Combined: All coils can be simultaneously combined
• Power output, kW: 15
• Amplifier type: Solid-state
• Standard number of channels: 8
• Receiver bandwidth, kHz: 1,000 per channel
• Location of coil connector (plug): Patient table
• Standard length of coil cables, m: Coil dependent
• Number of coil connectors (plugs): 4
• Coil tuning technique: Automatic

Parallel imaging    

• Name: iPAT
• Technique: mSENSE and GRAPPA (image based and k-space based)
• Calibration Technique: Automatic
• Maximum parallel acquisition acceleration factor: Standard 4; optional 8, 12 with iPAT extensions

Sequence Selection

• Spin echo (Minimum TR ms)    
• Minimum TR, 256 matrix, 30 cm FOV: 9.7 msec
• Minimum TR, 256 matrix, 30 cm FOV: 1.46 msec, 2-D/3-D GRE
• Minimum possible TE: 0.62 msec
• Minimum possible TI: 23 msec
• Fast-spin-echo max train length: 512
• Echo planar imaging max train length: 256

Control Console Workflow

• Standard user interface: syngo, multimodality user interface
• Local hard disk capacity: 145 GB
• RAM: 2 GB
• Removable media: CD/DVD
• Image protocol sharing: Phoenix: DICOM image-based method duplicates protocol via drag and drop
• Features designed to enhance workflow: Autoalign, Phoenix, scan assistant, inline technology, syngo, iPAT(GRAPPA), Tim assistant, utilization management reports, structured reporting, others

ESSENZA Patient Table

• Detachable: Optional
• Dimensions, L x W: 243 x 54 cm
• Horizontal speed: 20 cm/s
• Elevating: Standard free-floating
• Minimum height: 55 cm
• Limited mobility: 200 kg (440 lb)
• Fully mobile: 200 kg (440 lb)

Other ESSENZA Attributes

• FDA Clearance: Yes
• CE Mark (MDD): Yes

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