SOMATOM Perspective

Un sistema CT altamente innovativo

SOMATOM Perspective

Efficiency in CT with eMode

eMode is an automated software solution developed by Siemens. It responds to the demand for more efficient scanner usage by helping you operate the scanner in an exceptionally patient-friendly and financially efficient way – with a single click.

Convenience is key: once the scan protocol is ready, eMode analyzes the scan in real time. The system is then fine-tuned to provide the scan while simultaneously reducing wear and tear on the scanner.

Well-balanced scanner usage: Scanning in eMode enables the optimum correlation of dose, image quality and efficiency. All routine standard protocols are efficiently fine-tuned. If the software solution detects an efficiency conflict, eMode recommends you use the single click functionality to optimize parameter settings. Using this setting protects the scanner and runs the system off-peak.

Efficiency in CT with SAFIRE

Sinogram Affirmed Iterative Reconstruction (SAFIRE) brings the full dose-saving potential of iterative reconstruction to clinical practice. For the first time, raw data (visualized in the so-called sinogram) is used in the image improvement process.

Image validation: In the first loop, the CT images are retransferred to raw data, which models all relevant geometrical properties of the CT scanner. By comparing this synthetic raw data with the acquired data, deviations are identified. A further iteration loop compares the images with homologous reference data. This procedure can be regarded as validating the current images. An updated image is then again reconstructed, using the detected deviation information. Using multiple iterations, geometrical imperfections are corrected and image noise is reduced incrementally. SAFIRE can reduce radiation dose up to 60%1, and improve image quality in regards to contrast, sharpness, and noise.

Efficiency in CT with iTRIM

The iterative Temporal Resolution Improvement Method (iTRIM) is designed to improve the temporal resolution of cardiac CT imaging. iTRIM improves the temporal resolution by 20%, effectively reducing motion artifacts in CT images.

Dealing with motion artifacts: iTRIM is based on the observation that the presence of motion artifacts does not significantly change the histogram of a CT image. This information is used to reconstruct an image from less than half a turn of data. First, a partial cardiac scan is performed with weighted filtered back projection (WFBP), resulting in a temporal resolution equivalent to 180º of CT data. Then, an iterative reconstruction algorithm is started, using only a subset of the full 180° cardiac dataset. In regions that exhibit motion, the iTRIM image is used as the final image, whereas in static regions the WFBP image is used. Motion artifacts using the iTRIM algorithm are clearly reduced, while the same noise level and overall image quality are maintained. In the SOMATOM Perspective, iTRIM can obtain a temporal resolution as low as 195 msec.

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1Results may vary. Data on file.