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Prosthetic vascular graft infection imaging
Minhaj S Khaja1, Onur Sildiroglu, Klaus Hagspiel
1Department of Radiology, Health System Foundation, University of Virginia, Charlottesville, VA 22908, USA.
Clinical Imaging
|March 8, 2013
Summary
Software-based fusion imaging of computed tomography angiography (CTA) and white blood cell (WBC) scintigraphy improves diagnostic confidence for vascular graft infections. This combined approach enhances sensitivity, accuracy, and negative predictive value for detecting graft infections.
Area of Science:
- Radiology
- Nuclear Medicine
- Vascular Surgery
Background:
- Vascular graft infections pose a significant clinical challenge.
- Accurate imaging is crucial for timely diagnosis and effective management of graft infections.
Purpose of the Study:
- To evaluate the diagnostic performance of computed tomography angiography (CTA), white blood cell (WBC) scintigraphy, and their software-based fusion imaging in detecting vascular graft infections.
Main Methods:
- Retrospective review of 20 patients with suspected vascular graft infections who underwent both CTA and WBC single photon emission computed tomography (SPECT) between 2005 and 2010.
- Software-based coregistration was used to create fusion images.
- Patient outcomes were analyzed.
Main Results:
- WBC imaging showed a sensitivity of 75% and CTA a sensitivity of 88%.
- Fusion imaging (WBC SPECT/CTA) demonstrated improved sensitivity (94%), accuracy (85%), and negative predictive value (67%) compared to individual modalities.
- Fusion imaging positively influenced diagnostic confidence and patient outcomes.
Conclusions:
- Software-based fusion imaging of CTA and WBC scintigraphy enhances the diagnostic accuracy for vascular graft infections.
- This combined imaging approach offers improved sensitivity and negative predictive value, aiding in clinical decision-making.
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