Amarasekera, Hiran W., Costa, Matthew L., Parsons, Nicholas R., Achten, Juul, Griffin, Damian R., Manktelow, Sophie and Williams, Nigel R.. (2011) SPECT/CT bone imaging after hip resurfacing arthroplasty. Nuclear Medicine Communications, Volume 32 (Number 4). pp. 289-297. ISSN 0143-3636

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Abstract

Background In hip resurfacing arthroplasty a metal implant (prosthesis) is used to resurface the patient's native femoral head. The assessment of bone function around theimplant is important in evaluating any subsequent complications. The use of bone single photon emission computed tomography/computed tomography (SPECT/CT) imaging may enhance this evaluation. Objectives The primary objective of this study was to ascertain whether SPECT/CT imaging is feasible in the presence of the metal implant. A secondary objective wasto deduce the impact attenuation correction has on thedetected counts originating from bone covered by themetal implant. Methods A phantom was constructed to allow assessment of counts obtained from a point source (PS) imaged in thevicinity of a hip resurfacing implant. Three implant cup sizes (4, 8 and 10) were assessed and images acquired with a PS positioned adjacent to the implant pin and under the cup. Multiple acquisitions were undertaken both with and without surrounding soft tissue equivalent material. The images were analysed with and without attenuation correction and the recovered counts compared with that ofa PS imaged in free space (control). Results Attenuation-corrected counts did not vary significantly with cup size (P=0.427), PS position (P=0.999), presence of soft tissue equivalent material (P=0.193) or a combination of PS position and soft tissue(P=0.193). The attenuation-corrected counts recovered from a PS (soft tissue equivalent material present) showed an overestimation, compared with the control, both when positioned adjacent to the pin and under the cup; mean 8% (4–16%) and 4% (1–6%), respectively. Conclusion The results of the study suggest that the application of the attenuation correction technique is applicable to bone SPECT/CT images of the femoral head–neck junction acquired in the presence of a hip resurfacing implant.

Item Type:	Journal Article
Subjects:	R Medicine > RC Internal medicine R Medicine > RD Surgery
Divisions:	Faculty of Medicine > Warwick Medical School > Clinical Sciences Research Institute (CSRI) Faculty of Medicine > Warwick Medical School
Library of Congress Subject Headings (LCSH):	Arthroplasty, Total hip replacement -- Reoperation, Hip joint -- Surgery, Single-photon emission computed tomography
Journal or Publication Title:	Nuclear Medicine Communications
Publisher:	Lippincott Williams & Wilkins
ISSN:	0143-3636
Date:	April 2011
Volume:	Volume 32
Number:	Number 4
Page Range:	pp. 289-297
Identification Number:	10.1097/MNM.0b013e328342fe80
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access
URI:	http://wrap.warwick.ac.uk/id/eprint/41315

Data sourced from Thomson Reuters' Web of Knowledge

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