Nucl Med Mol Imaging.  2018 Oct;52(5):380-383. 10.1007/s13139-018-0534-9.

Usefulness of Respiratory-Gated ¹⁸F-FDG PET/CT in Detecting Upper Abdominal Fever Focus

• Bae S
• Bang JI
• Song YS
• Lee WW

• KMID: 2422800
• DOI: http://doi.org/10.1007/s13139-018-0534-9

Abstract

Respiratory-gated ¹â¸F-fluorodeoxygluocse (¹â¸F-FDG) PET/CT has been successfully used to better localize malignancies in the lung or upper abdominal organs. However, clinical usefulness of respiratory-gated ¹â¸F-FDG PET/CT in detection of fever focus has not been reported yet. A 68-year-old male patient with a history of living donor liver transplantation and biliary stenting was referred for ¹â¸F-FDG PET/CT due to fever of unknown origin (FUO). To find the accurate fever focus, respiratory-gated and non-gated ¹â¸F-FDG PET/CT was performed. Respiratory-gated PET/CT readily revealed prominent hypermetabolic lesion in the distal common bile duct (CBD) area where previous surgical graft was in situ. Maximum standardized uptake value (SUVmax) and SUVratio (SUR) were greater in the gated PET/CT (SUVmax 5.4 and SUR 3.5) than in the non-gated PET/CT (SUVmax 4.6 and SUR 3.0). Fever dramatically subsided after removal of the graft in the CBD. This case report implies that respiratory-gated ¹â¸F-FDG PET/CT can visualize upper abdominal fever focus with better contrast than the conventional non-gated method.

Keyword

Respiratory-gated imaging techniques; Positron emission tomography; Computed tomography; Fever of unknown origin; Fluorodeoxyglucose ¹⁸F

MeSH Terms

Aged
Common Bile Duct
Fever of Unknown Origin
Fever*
Humans
Liver Transplantation
Living Donors
Lung
Male
Methods
Positron-Emission Tomography
Positron-Emission Tomography and Computed Tomography*
Respiratory-Gated Imaging Techniques
Stents
Transplants