¹⁸F-FDG-PET uptake in non-infected total hip prostheses

Figures & data

Figure 1. Flow chart of the patient inclusion process.

Figure 2. Example of ¹⁸F-FDG uptake in a non-infected total hip prosthesis. (A) Coronal FDG-PET image showing FDG uptake around the prosthesis, most prominent at the lateral side of the collum; (B, C, D) Coronal fused FDG-PET/CT images at different slices showing the uptake around the prosthesis; (E) Transaxial fused FDG-PET/CT image showing prominent physiological uptake at the lateral side of the cup of the prosthesis.

Table 1. Visual FDG-uptake pattern in non-infected hip prostheses

	Cemented	Uncemented
Factor	n = 38	n = 20
Diffuse heterogeneous	32	16
Diffuse homogeneous	2	2
Focal	2	0
No uptake	2	2

Table 2. SUVmax measured at 8 different locations around the prosthesis

	Cemented group	Uncemented group
	Median SUVmax (IQR)	Median SUVmax (IQR)
Tip	2.0 (1.6–2.4)	2.2 (1.1–3.1)
Shaft	0.8 (0.6–1.1)	1.1 (0.9–2.0)
Greater trochanter	3.3 (2.5–4.0)	2.2 (1.7–4.2)
Lesser trochanter	2.8 (2.3–3.5)	2.6 (1.7–4.2)
Neck	4.2 (2.9–5.4)	4.6 (3.1–10.4)
Acetabulum lateral	3.1 (2.5–4.4)	3.2 (2.4–6.3)
Acetabulum median	2.0 (1.6–2.6)	1.9 (1.4–3.4)
Acetabulum medial	2.7 (2.0–3.3)	3.2 (2.1–6.5)

Figure 3. The relationship between the mean SUVmax and the age of the prosthesis in cemented (left panel) and uncemented hip prostheses (right panel).