SPECT-CT in total hip arthroplasty.

Area of Science:

• Musculoskeletal Imaging
• Nuclear Medicine
• Radiology

Background:

• Single photon emission computed tomography combined with computed tomography (SPECT-CT) integrates functional and anatomical imaging.
• It offers superior spatial localization and greater tolerance to metallic artifacts compared to radiography and MRI.
• SPECT-CT is increasingly utilized in musculoskeletal imaging for precise localization of tracer uptake, especially around metal prostheses.

Purpose of the Study:

• To review the application of SPECT-CT in evaluating complications following total hip arthroplasty (THA).
• To highlight SPECT-CT's role in identifying specific features of post-THA complications for improved patient management.
• To demonstrate the utility of SPECT-CT in surgical planning through multiplanar reconstruction.

Main Methods:

• Review of SPECT-CT imaging in patients with total hip arthroplasty.
• Analysis of SPECT-CT findings for various post-THA complications.
• Comparison of SPECT-CT with conventional imaging modalities.

Main Results:

• SPECT-CT accurately localizes increased tracer uptake around THA prostheses.
• The technique is effective in detecting complications such as aseptic loosening, periprosthetic infection, and polyethylene wear.
• SPECT-CT facilitates multiplanar reconstruction for enhanced surgical planning.

Conclusions:

• SPECT-CT is a valuable adjunct to conventional imaging for managing post-THA complications.
• Radiologists must be proficient in interpreting SPECT-CT features to guide treatment decisions.
• This imaging modality improves the assessment of prosthetic joint complications.