Siemens SOMATOM Definition AS 64 CT Scanner

Siemens SOMATOM Definition AS 64 CT Highlights & Benefits

The SOMATOM Definition AS 64 combines 64-slice CT acquisition with Siemens FAST CARE workflow, dose-management technologies, and advanced imaging options in a single-source CT platform.

Key Benefits

• • 64-slice CT configuration
  • Cardiovascular temporal resolution down to 150 ms
  • FAST CARE exam planning and workflow tools
  • CARE Dose4D and CARE kV dose management
  • 78 cm (30.7 in) gantry opening, with 80 cm (31.5 in) available on applicable configurations
  • Patient table capacity up to 676 lb (307 kg) with applicable table configuration
  • Optional SAFIRE, Dual Energy, perfusion, and interventional capabilities
  • Upgrade path within the Definition AS platform

Software, detector, tube, table, workstation, and advanced imaging capabilities vary by individual system.

Siemens SOMATOM Definition AS 64-Slice CT Performance

64-Slice Configuration

The SOMATOM Definition AS 64 is a single-source, 64-slice CT scanner that uses 32 × 0.6 mm detector collimation with Siemens z-Sharp technology to produce 64-slice acquisition.

This supports thin-section CT for routine body imaging as well as cardiac, vascular, neurologic, musculoskeletal, and other advanced applications. Acquired datasets can also be reconstructed in multiple planes for further diagnostic review.

Fast Whole-Body Coverage

FAST CARE 64-slice configurations support rotation times down to approximately 0.30 seconds, helping shorten acquisition during chest, body, vascular, trauma, and other exams where patient motion can affect image quality.

Stellar-ready configurations can support rotation times down to 0.28 seconds and scan coverage up to 23 cm/s.

Fine-Detail & Cardiac Imaging

The Definition AS platform provides approximately 0.33 mm isotropic spatial resolution for visualizing fine anatomical detail.

For cardiovascular imaging, FAST CARE 64-slice configurations provide temporal resolution down to approximately 150 ms. Faster temporal resolution helps reduce the effect of cardiac motion during appropriately configured cardiovascular examinations.

CARE Dose Management & Definition AS Image Quality

CARE Dose4D & CARE kV

CARE Dose4D automatically adjusts tube current according to patient anatomy during the scan. CARE kV assists with selecting tube voltage based on the examination and patient characteristics.

Together, these tools help technologists tailor acquisition settings to the patient instead of relying on the same exposure parameters for every exam.

Additional dose-management capabilities can include Adaptive Dose Shield, X-CARE, Adaptive ECG Pulsing, and Adaptive Cardio Sequence depending on system configuration.

SAFIRE Noise Reduction

Systems equipped with SAFIRE use iterative reconstruction to reduce image noise while preserving diagnostic detail.

This can support image-quality goals when lower-dose protocols are used. SAFIRE availability depends on the software generation and licenses installed on the individual Definition AS 64.

Stellar Detector Upgrade Options

Compatible Definition AS 64 systems can be equipped or upgraded with Siemens Stellar detector technology.

Stellar reduces electronic detector noise and improves sensitivity to low-level signals. TrueSignal integrates signal conversion at the detector, while HiDynamics extends dynamic range to support image quality across a wider range of signal levels.

When combined with Edge technology, Stellar-equipped systems can reconstruct true 0.5 mm slices for fine-detail imaging.

Stellar is configuration-dependent. MXR can confirm whether an available Definition AS 64 includes the Stellar detector.

Definition AS 64 Patient Access & FAST CARE Workflow

78 cm Gantry Opening

The standard Definition AS gantry provides a 78 cm (30.7 in) opening, with an 80 cm (31.5 in) opening available on applicable configurations.

The wider opening provides additional positioning space for larger patients and examinations that require more room around the patient.

Up to 676 lb Patient Table Capacity

Applicable high-capacity table configurations support patients up to 676 lb (307 kg).

Standard and optional patient tables differ in load capacity and scan range, so the table installed on an available Definition AS 64 should be verified when bariatric imaging or extended scan range is important.

FAST Planning & Exam Automation

FAST CARE helps reduce repetitive exam setup and improve consistency between technologists.

FAST Planning can automatically determine organ-based scan and reconstruction ranges. Depending on installed software, additional tools can include FAST Spine for spine reconstruction planning, FAST Adjust for scan-parameter adjustment, and FAST Cardio Wizard for cardiovascular exam setup.

These tools reduce manual planning steps while helping standardize how common examinations are prepared.

syngo Workflow, DICOM & Post-Processing

The Definition AS uses Siemens syngo-based acquisition and image-processing workflows.

Depending on configuration, the Definition AS 64 integrates with compatible PACS, RIS, DICOM worklists, and image-management environments. Available post-processing can include multiplanar reconstruction, maximum-intensity projection, volume rendering, cardiovascular analysis, perfusion evaluation, Dual Energy processing, and other applications.

Workstation hardware, software version, connectivity, and post-processing packages vary by system.

Definition AS 64 Clinical Environments & Applications

The SOMATOM Definition AS 64 supports routine and advanced CT across hospitals, imaging centers, and outpatient facilities. Available applications depend on the hardware, software, and clinical packages installed on the individual system.

Clinical Environments

• • Hospitals and health systems
  • Diagnostic imaging centers
  • Outpatient imaging facilities
  • Emergency and trauma imaging departments
  • Facilities performing cardiac and advanced CT

Supported CT Applications

• • Head, chest, abdomen, and pelvis CT
  • Emergency and trauma CT
  • Cardiac CT and coronary CT angiography
  • Vascular CT angiography
  • Neurologic and neurovascular CT
  • Oncology and body imaging
  • Pediatric CT
  • Bariatric CT
  • Perfusion and dynamic imaging on appropriately configured systems
  • CT-guided procedures on appropriately configured systems

Cardiac, Dual Energy, perfusion, and interventional applications depend on the software and hardware installed on the specific Definition AS 64.

Advanced Imaging Options for the Definition AS 64

Advanced imaging capabilities vary by installed hardware, software generation, and licensed clinical packages.

Dual Energy Material Characterization

Dual Energy configurations can acquire data at different energy levels to provide information about material composition in addition to conventional CT anatomy.

Available applications can support material characterization, metal artifact reduction, gout evaluation, and contrast-enhanced imaging.

Dynamic & Perfusion Imaging

FAST CARE 64-slice configurations can support long-range dynamic imaging for whole-organ coverage.

Specific software packages can add perfusion and time-resolved CT applications for exams that require functional information beyond standard anatomical imaging.

CT-Guided Procedures

Definition AS configurations with interventional software can provide 3D image guidance for minimally invasive CT-guided procedures.

Sliding Gantry configurations move the CT gantry on rails around the patient, supporting trauma, surgical, and interventional workflows where minimizing patient transfers can be important.

These advanced capabilities should be confirmed on the individual system.

Available Definition AS 64 Configurations & Installed Options

Not every SOMATOM Definition AS 64 has the same detector, tube history, software licenses, workstation, patient table, or advanced imaging packages.

When evaluating an available system, important configuration details include:

• Year of manufacture
• Tube model and tube usage
• Detector configuration
• FAST CARE generation
• Software version
• SAFIRE availability
• Cardiac applications
• Dual Energy software
• Perfusion and interventional applications
• Workstation and post-processing packages
• Patient table configuration
• Included accessories

MXR can confirm the installed configuration of an available Definition AS 64 so buyers can compare actual clinical capabilities rather than relying on the model name alone.

64- to 128-Slice Upgrade Path

Compatible Definition AS configurations support an upgrade path through 128 slices.

Facilities comparing the 64-slice system with a higher-slice configuration can also review the Siemens SOMATOM Definition AS 128.

Upgrade availability depends on the hardware generation and configuration of the individual scanner.

Definition AS 64 Site Planning

Applicable Definition AS 64 configurations are designed for an installation footprint of approximately 193.7 sq ft (18 m²).

Final room requirements depend on the patient table, electrical service, cooling method, shielding, control-room layout, accessories, and local requirements.

Depending on configuration, Definition AS systems use air or water cooling. Site planning should be based on the exact system being installed.

SOMATOM Definition AS 64 Specifications

Specifications vary by Definition AS generation and installed configuration. MXR can confirm the specifications of an individual system.

CT Acquisition & Detector

• • Slice configuration: 64 slices
  • Maximum collimation: 32 × 0.6 mm
  • Acquisition technology: Siemens z-Sharp technology supporting 64-slice acquisition from the 32 × 0.6 mm detector configuration
  • Detector: Siemens UFC detector on standard configurations
  • Stellar detector: Optional on compatible Definition AS 64 configurations
  • Rotation time: Down to approximately 0.30 seconds on FAST CARE configurations
  • Stellar-ready rotation time: Down to 0.28 seconds on applicable configurations
  • Cardiovascular temporal resolution: Down to approximately 150 ms on FAST CARE 64-slice configurations
  • Spatial resolution: Approximately 0.33 mm isotropic, configuration-dependent
  • Stellar scan coverage: Up to 23 cm/s on applicable configurations

Gantry & Patient Table

• • Standard gantry opening: 78 cm (30.7 in)
  • Optional gantry opening: Up to 80 cm (31.5 in) on applicable configurations
  • Maximum patient table capacity: Up to 676 lb (307 kg) with applicable high-capacity table
  • Scannable range: Up to approximately 200 cm (78.7 in) with applicable table configuration
  • Gantry tilt: Configuration-dependent

X-Ray Generator & Tube

• • X-ray tube: Siemens STRATON family
  • Tube configuration: Varies by system generation and installed equipment
  • Generator power: Configuration-dependent, with up to 100 kW available on applicable Definition AS configurations
  • Tube voltage: Configuration-dependent, including 70 kV capability on applicable systems
  • Tube current: Configuration-dependent
  • Tube history: Model, installation date, tube usage, and condition should be confirmed for the individual scanner

Image Reconstruction & Performance

• • Reconstruction matrix: Up to 512 × 512
  • Submillimeter reconstruction: Supported
  • SAFIRE iterative reconstruction: Optional, configuration-dependent
  • FAST Planning: Available on applicable FAST CARE configurations
  • FAST Spine: Configuration-dependent
  • FAST Adjust: Configuration-dependent
  • FAST Cardio Wizard: Configuration-dependent
  • CARE Dose4D: Available on applicable configurations
  • CARE kV: Available on FAST CARE configurations
  • Dual Energy: Optional, configuration-dependent
  • Dynamic and perfusion imaging: Optional, configuration-dependent
  • 3D-guided intervention: Optional, configuration-dependent

Workflow & Connectivity

• • Acquisition and processing environment: Siemens syngo-based workflow
  • DICOM connectivity: Supported on appropriately configured systems
  • PACS integration: Supported with compatible network configuration
  • RIS and worklist integration: Configuration-dependent
  • Advanced post-processing: Dependent on workstation and licensed software

System & Site Requirements

• • Approximate footprint: 193.7 sq ft (18 m²) for applicable Definition AS 64 configurations
  • Cooling: Air or water, depending on system configuration
  • Electrical requirements: Verify for the individual system
  • Room shielding: Determined by scanner configuration, room design, expected workload, and applicable requirements
  • Installation requirements: Confirm against the exact Definition AS 64 configuration being installed