In June 2017, Siemens Healthineers introduced their new SPECT/CT scanner — Symbia Intevo Bold at the SNMMI (Society of Nuclear Medicine & Molecular Imaging) annual meeting in Denver. The device has been designed for a broad range of clinical research. It combines the certified technology of single-photon emission computed tomography (SPECT) and highly productive improved capabilities of computed tomography. Siemens states that for the majority of healthcare institutions the possibility of dual use of SPECT/CT scan will be more efficient and profitable. In many hospitals after patient examination with the help of a SPECT-camera, an additional diagnostic CT scanning is necessary. Availability of Symbia Intevo Bold allows obtaining a double set of images using one system.
Let us take a closer look at Symbia Intevo Bold — a new product by Siemens. The scanner includes all the necessary technologies and programs. It also ensures excellent image quality with the lowest possible radiation doses. It is due to the availability of IVR (Interleaved Volume Reconstruction) option that allows the scanner to reconstruct up to 32 slices and allows evaluation of even the smallest structures and lesions, such as fractures. In addition, IVR improves spatial resolution of all CT scans in the z-direction.
Importantly, the Symbia Intevo Bold allows obtaining dual energy from a single source, which means conducting two consecutive scans that work at different energy levels. Due to such methods, it is possible not only to improve the image quality, but also to combine data about the condition of living tissue and to study the disease morphology.
Symbia Intevo Bold SPECT/CT scanner by Siemens is the first to offer the SAFIRE (Sinogram Affirmed Iterative Reconstruction) algorithm, which reduces radiation dose by 60% and decreases the noise level, which in its turn improves visualization and ensures high-quality images.
In addition, any SPECT/CT scanner by Siemens offers the IMAR (Iterative Metal Artifact Reduction) algorithm, which was created in order to minimize the artefacts caused by presence of metal structures such as dental or orthopedic implants or plates. With this algorithm available, it is possible not only to improve quality of images with metal-induced distortions, but also to use the CT scan in order to improve the accuracy of the SPECT scan.
After review of all the enhancements of Siemens Symbia Intevo Bold, it is necessary to evaluate the quality improvement in SPECT scanning, especially xSPECT Quant — a technology serving to perform quantification of isotopes. This function provides the possibility to evaluate accumulation of not only Technetium-99m (Tc 99m), which is the most common isotope in SPECT imaging, but also of Indium-111 (111In), Iodine 123 (I123) and Lutecium-177 (177Lu). The technology allows expanding the scope of use of the new SPECT/CT scanner from general nuclear medicine to examination of patients who have prostate cancer, neuroendocrine tumors and neurological disorders.
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