Nucl Med Mol Imaging.  2019 Aug;53(4):287-295. 10.1007/s13139-019-00600-2.

Minimum Standardized Uptake Value from Quantitative Bone Single-Photon Emission Computed Tomography/Computed Tomography for Evaluation of Femoral Head Viability in Patients with Femoral Neck Fracture

Affiliations
  • 1Department of Nuclear Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine, 82, Gumi-ro 173 Beon-gil, Bundang-gu, Seongnam-si, Gyeonggi-do 13620, South Korea. wwlee@snu.ac.kr
  • 2Institute of Radiation Medicine, Medical Research Center, Seoul National University, Seoul, South Korea.
  • 3Department ofNuclearMedicine, Hanyang University Guri Hospital, Hanyang University College of Medicine, Seoul, South Korea.
  • 4Department of Nuclear Medicine, Yeungnam University Medical School and Hospital, Daegu, Gyeongsangbuk-do, South Korea.
  • 5Division of Nuclear Medicine, Department of Radiology, St. Vincent's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea.
  • 6Department of Nuclear Medicine & Molecular Imaging, Ajou University School of Medicine, Woldeukeom-ro, Suwon-si, South Korea.

Abstract

PURPOSE
Bone single-photon emission computed tomography/computed tomography (SPECT/CT) has been widely used for evaluation of femoral head viability in patients with femoral neck fracture. The current study aimed to investigate utility of standardized uptake value (SUV) from quantitative bone SPECT/CT for assessment of femoral head viability.
METHODS
From March 2015 to November 2018, quantitative bone SPECT/CT was performed in 9 patients with non-viable femoral head post femoral neck fracture and in 31 controls. Maximum (SUV(max)), mean (SUVmean), and minimum standardized uptake values (SUVmin) were measured over femoral head and neck. Mann-Whitney U test with Bonferroni correction was used to compare SUVs of ipsilateral and contralateral femurs from femoral neck fracture patients with those of control femurs.
RESULTS
As for femoral head viability, SUV(max) and SUVmean were not significantly decreased in non-viable femoral heads compared to those in controls. Only the SUVmin was significantly reduced in non-viable femoral heads (mean ± standard deviation, 0.57 ± 0.38) than in controls (0.95 ± 0.26, p = 0.006) and contralateral femoral heads (1.36 ± 0.59, p = 0.008). The cutoff SUVmin of 0.61 (g/mL) yielded a sensitivity of 77.8% and specificity of 87.1% for detection of non-viable femoral heads (p = 0.006). Contralateral femoral necks of the femoral neck fracture patients showed significantly higher SUVmean and SUVmin (3.17 ± 1.20 and 1.64 ± 0.63) than those of controls (2.32 ± 0.53 and 1.04 ± 0.27; p = 0.021 and p = 0.002, respectively), which seemed to reflect weight bearing effect or metabolic derangement.
CONCLUSIONS
The non-viable femoral heads from the femoral neck fracture showed significantly reduced SUVmin. Quantitative bone SPECT/CT holds promise for objective evaluation of femoral head viability.

Keyword

Femur; Fracture; Single-photon emission computed tomography; Computed tomography; Quantitation; Standardized uptake value

MeSH Terms

Femoral Neck Fractures*
Femur
Femur Neck*
Head*
Humans
Neck
Sensitivity and Specificity
Weight-Bearing
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