How to get high quality nuclear images when imaging obese patients

Imaging obese patients often presents a unique challenge for medical providers. It can be difficult and sometimes impossible to accommodate larger patients based on their size and the limitations of certain equipment.

Aside from the maximum weight threshold, a major obstacle of many nuclear gamma cameras is their fixed detector design, which hinders the acquisition of quality images in this patient population. Because of the fixed geometry of these systems, there is a limit to where the detectors can be positioned for viewing, which can easily move the heart out of the “sweet spot” field of view.

Effectively imaging obese patients requires equipment that is cardio-centric. A camera that features a variable radius, which keeps the heart in the field of view, eliminating truncation, is ideal. Incorporating advanced iterative reconstruction provides the ability to acquire appropriate counts for the image with reduced scan time. Additionally, attenuation correction further benefits imaging obese patients as it improves image quality and interpretive accuracy.

Digirad has designed nuclear cameras that effectively address these issues. The Cardius® XPO Series and X-ACT cameras include a higher than average weight capacity, supporting up to 500 pounds, nSPEED™ 3D-OSEM reconstruction software, and TruACQ Count Based Imaging™. The X-ACT also includes fully integrated Fluorescence Attenuation Correction for improved diagnostic confidence. Most importantly, Digirad’s dedicated cardiac cameras feature variable geometry with an upright rotating chair and camera heads that move in and out while continuously keeping the heart in focus.

A camera with a variable radius is invaluable in optimizing the imaging of obese patients. For more information or a demonstration of these features, contact Digirad’s camera team.



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