Siemens Healthcare has introduced a new SPECT system at the 27th Congress of the European Association of Nuclear Medicine (EANM).
Symbia Evo Excel combines high image resolution and detector sensitivity with the smallest room size requirement in its class for general nuclear medicine imaging, according to Siemens. It can be sited in 29% less space than conventional systems in its class and could fit in a room as small as 3.60 m x 4.57 m.
The system's bore size is also 30% larger (102 cm), compared with its predecessor, and the patient bed supports patients up to 227 kg. It also has a minimum access height of 53 cm. The short tunnel length and maximum scan length of up to 200 cm improves patient comfort for claustrophobic and tall patients, the firm added.
The detector heads rotate into numerous positions, including caudal/cephalic tilt, providing imaging configurations for general purpose, cardiology, oncology, and neurology studies, Siemens said.
![Overview of the study design. (A) The fully automated deep learning framework was developed to estimate body composition (BC) (defined as subcutaneous adipose tissue [SAT] in liters; visceral adipose tissue [VAT] in liters; skeletal muscle [SM] in liters; SM fat fraction [SMFF] as a percentage; and intramuscular adipose tissue [IMAT] in deciliters) from MRI. The fully automated framework comprised one model (model 1) to quantify different BC measures (SAT, VAT, SM, SMFF, and IMAT) as three-dimensional (3D) measures from whole-body MRI scans. The second model (model 2) was trained to identify standardized anatomic landmarks along the craniocaudal body axis (z coordinate field), which allowed for subdividing the whole-body measures into different subregions typically examined on clinical routine MRI scans (chest, abdomen, and pelvis). (B) BC was quantified from whole-body MRI in over 66,000 individuals from two large population-based cohort studies, the UK Biobank (UKB) (36,317 individuals) and the German National Cohort (NAKO) (30,291 individuals). Bar graphs show age distribution by sex and cohort. BMI = body mass index. (C) After the performance assessment of the fully automated framework, the change in BC measures, distributions, and profiles across age decades were investigated. Age-, sex-, and height-adjusted body composition reference curves were calculated and made publicly available in a web-based z-score calculator (https://circ-ml.github.io).](https://img.auntminnieeurope.com/mindful/smg/workspaces/default/uploads/2026/05/body-comp.XgAjTfPj1W.jpg?auto=format%2Ccompress&dpr=2&fit=crop&h=167&q=70&w=250)
