Pericardial fat was assessed at baseline and three-year follow up using methods that have been described previously30 (link). In brief, noncontrast coronary artery calcium scans were taken using an electron beam computed tomography scanner (GE-Imatron C-150; GE-Imatron, San Francisco, CA). Volume of pericardial fat (in cm3) was calculated by two experienced investigators blinded to any psychophysiological and clinical data on a Siemens multimodality workstation (Siemens, Forchheim, Germany). To account for differences in heart size, we normalised pericardial fat volume by body surface area (giving values in cm3/m2) and used these values in analyses31 (link).
Multimodality workstation
Manufactured by Siemens
Sourced in Germany
The Siemens multimodality workstation is a hardware and software platform designed to support the integration and visualization of various medical imaging modalities. It provides a unified interface for the display and analysis of data from different imaging techniques, such as computed tomography (CT), magnetic resonance imaging (MRI), and positron emission tomography (PET).
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Lab products found in correlation
2 protocols using multimodality workstation
1
Quantifying Pericardial Fat Over Time
2
Quantifying Pericardial Fat Volume
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Pericardial fat was measured using noncontrast coronary artery calcium scans acquired using electron beam computed tomography (GE-Imatron C-150; GE-Imatron, San Francisco, California). The methods by which pericardial fat was assessed have been described previously (40 (link)). Forty contiguous 3-mm slices were taken during a single breath-hold starting at the carina and proceeding to the level of the diaphragm. Scan time was 100 ms/slice, synchronized to 40% of the R-R interval. Two experienced investigators blinded to any psychophysiological and clinical data calculated the volume of pericardial fat (in cubic centimeters) on a Siemens multimodality workstation (Siemens, Forchheim, Germany). For the present study, we adjusted pericardial fat volume for body surface area using the formula derived by Dubois and Dubois (body surface area (m2) = weight (kg)0.425 × height (cm)0.725 × 0.007184) (41 (link)) to correct for differences in heart size (giving values in cubic centimeters per meter squared) (42 (link)).
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