Usefulness of Adding SPECT/CT to 99mTc-Hexamethylpropylene Amine Oxime ( HMPAO)-labeled Leukocyte Imaging for Diagnosing Prosthetic Joint Infections

被引:34
作者
Kim, Hye Ok [1 ]
Na, Sae Jung [2 ]
Oh, Seung Jun [1 ]
Jung, Bong Sung [3 ]
Lee, Soo-Ho [3 ]
Chang, Jae Suk [3 ]
Bin, Seong-Il [3 ]
Ryu, Jin-Sook [1 ]
机构
[1] Univ Ulsan, Coll Med, Asan Med Ctr, Dept Nucl Med, Seoul 138736, South Korea
[2] Catholic Univ Korea, Uijeongbu St Marys Hosp, Dept Radiol, Seoul, South Korea
[3] Univ Ulsan, Coll Med, Asan Med Ctr, Dept Orthoped Surg, Seoul 138736, South Korea
关键词
SPECT/CT; Tc-99m-HMPAO-labeled leukocytes; infection; hip prosthesis; knee prosthesis; BONE-MARROW SCINTIGRAPHY; TOTAL HIP; LABELED LEUKOCYTE; KNEE REPLACEMENT; TC-99M; MANAGEMENT; CT;
D O I
10.1097/RCT.0000000000000011
中图分类号
R8 [特种医学]; R445 [影像诊断学];
学科分类号
1002 ; 100207 ; 1009 ;
摘要
Objective: This study evaluated the usefulness of adding single-photon emission computed tomography (SPECT)/computed tomography (CT) (SPECT/CT) to technetium Tc 99m (Tc-99m) hexamethylpropylene amine oxime (HMPAO)-labeled leukocyte imaging for diagnosing infections in hip or knee joint prostheses. Methods: The Tc-99m-HMPAO-labeled leukocyte scans of 164 patients (71 with hip prostheses and 93 with knee prostheses) with clinically suspected prosthetic infections were reviewed retrospectively. Planar images were taken 4 to 6 and 21 to 26 hours after injecting the labeled leukocytes and SPECT/CT images were obtained 4 to 6 hours after the injection. The final diagnosis of infection was based on pathologic findings (n = 70), bacteriological data (n = 61), or clinical follow-up (n = 33). Results: Of the 164 patients, 89 patients had a diagnosis of prosthetic joint infections. The sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV), and diagnostic accuracy of the planar images alone were 82.0%, 88.0%, 89.0%, 80.5%, and 84.8%, respectively. When the planar images were combined with SPECT, the sensitivity, specificity, PPV, NPV, and diagnostic accuracy were 91.0%, 88.0%, 90.0%, 89.2%, and 89.6%, respectively. When the planar images were combined with SPECT/CT, these values increased further to 93.3%, 93.3%, 94.3%, 92.1%, and 93.3%, respectively. Adding CT to SPECT resulted in a greater increase in sensitivity and specificity for hip prosthesis infections than for knee prosthesis infections. SPECT/CT mainly contributed by precisely localizing the anatomical site of the active inflammatory lesion and by delineating the extent of the lesion after diagnosis with SPECT. Conclusions: Single-photon emission computed tomography/CT combined with Tc-99ms-HMPAO-labeled leukocyte imaging was useful for diagnosing prosthesis infections, particularly in hip prosthesis infections, as it improved diagnostic accuracy and provided anatomical localization data.
引用
收藏
页码:313 / 319
页数:7
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