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Siemens fMRI User Manual

Siemens fMRI
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www.usa.siemens.com/healthcare
fMRI User Guide
Version 1.03
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Siemens fMRI Specifications

General IconGeneral
ManufacturerSiemens
CategoryIndustrial Equipment
Magnetic Field Strength1.5T / 3T / 7T (depending on the specific model)
Gradient StrengthUp to 80 mT/m (depending on the specific model)
Slew Rate200 T/m/s or higher (model dependent)
Imaging ModesfMRI
SoftwareSiemens Syngo MR (specific version varies by model)
Cooling SystemHelium-based cooling system
DimensionsVaries by model (typically large, room-sized systems)
WeightVaries significantly depending on the model. Typical weight: 5-10 tons
Power RequirementsHigh-power three-phase supply (specifics vary by model)

Summary

fMRI Prerequisites and Licenses

fMRI Software Licenses and Packages

Details licensing information for various software versions and application packages required for fMRI.

Understanding the BOLD Effect in fMRI

fMRI Sequences and Acquisition

EPI Sequences for BOLD Imaging

Describes the available EPI sequences for BOLD imaging: ep2d_fid, ep2d_bold, and ep2d_pace.

fMRI Acquisition Parameters and Setup

Covers synchronization, motion correction, slice timing, spatial filtering, and co-registration for fMRI acquisition.

fMRI Data Analysis Reference

Refers to the BOLD Imaging Application brochure for detailed analysis procedures.

fMRI Peripherals and Setup

Response Pad for Subject Input

Describes the response pad used for registering subject responses to stimuli.

Visual Stimulus Presentation Methods

Covers visual stimuli presentation using projectors and LCD screens, including setup.

Auditory, Eye Tracking, and Physiological Monitoring

Details auditory stimulus, eye tracking, and physiological monitoring setups for fMRI studies.

Synchronization of fMRI Events

Explains the importance of synchronizing stimuli, subject response, and physiological measurements.

Peripheral Device Installation and RF Interference

Discusses installation challenges, RF noise, and performing noise tests for peripheral devices.

Typical fMRI EPI Artifacts

N/2 Ghosting Artifacts in EPI

Explains N/2 ghosting artifacts in EPI sequences and methods to avoid them.

Distortion Artifacts in EPI Sequences

Details distortion artifacts in EPI sequences caused by susceptibility differences and shimming.

Spatial Image Shifts in EPI

Covers spatial shifts in EPI images due to B0 drifts and methods to minimize them.

Chemical Shift Artifacts in EPI

Describes chemical shift artifacts in EPI sequences and the use of fat suppression.

Setting Up a Basic fMRI Experiment

Study Design for fMRI Experiment

Outlines a block design experiment using a finger tapping motor task for fMRI setup.

Running the fMRI Study

Provides step-by-step instructions for setting up and running an fMRI experiment with a motor task.

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