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Molecular Imaging and Biology

, Volume 20, Issue 5, pp 857–867 | Cite as

[18F]Fluorocholine Uptake of Parathyroid Adenoma Is Correlated with Parathyroid Hormone Level

  • Abdullah A. AlharbiEmail author
  • Fahad M. Alshehri
  • Abdulrahman A. Albatly
  • Bert-Ram Sah
  • Christoph Schmid
  • Gerhard F. Huber
  • Martin W. Huellner
Research Article

Abstract

Purpose

The aim of the study was to investigate the relationship between [18F]fluoromethyl-dimethyl-2-hydroxyethylammonium ([18F]FCh) positron emission tomography (PET) parameters, laboratory parameters, and postoperative histopathological results in patients with primary hyperparathyroidism (pHPT) due to parathyroid adenomas.

Procedures

This retrospective study was conducted in 52 patients with biochemically proven pHPT. [18F]FCh-PET parameters (maximum standardized uptake value: SUVmax) in early phase (after 2 min) and late phase (after 50 min), metabolic volume, and adenoma-to-background ratio (ABR), preoperative laboratory results (PTH and serum calcium concentration), and postoperative histopathology (location, size, volume, and weight of adenoma) were assessed. Relationship of PET parameters, laboratory parameters, and histopathological parameters was assessed using the Mann-Whitney U test and Spearman correlation coefficient. MRI characteristics of parathyroid adenomas were also analyzed.

Results

The majority of patients underwent a PET/MR scan, 42 patients (80.7 %); 10 patients (19.3 %) underwent PET/CT. We found a strong positive correlation between late-phase SUVmax and preoperative PTH level (r = 0.768, p < 0.001) and between late-phase ABR and preoperative PTH level (r = 0.680, p < 0.001). The surgical specimen volume was positively correlated with the PET/MR lesion volume (r = 0.659, p < 0.001). No significant association was observed between other [18F]FCh-PET parameters, laboratory parameters, and histopathological findings. Cystic adenomas were larger than non-cystic adenomas (p = 0.048).

Conclusions

[18F]FCh uptake of parathyroid adenomas is strongly correlated with preoperative PTH serum concentration. Therefore, the preoperative PTH level might potentially be able to predict success of [18F]FCh-PET imaging in hyperparathyroidism, with higher lesion-to-background ratios being expected in patients with high PTH. PET/MR is accurate in estimating the volume of parathyroid adenomas.

Key Words

[18F]Fluorocholine Hyperparathyroidism Parathyroid adenoma Parathyroid hormone PET/CT PET/MRI 

Notes

Compliance with Ethical Standards

All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.

Conflict of Interest

M.W.H. received speaker’s fees from GE Healthcare. The institution of M.W.H. received grants from GE Healthcare. All other authors declare no potential conflicts of interest.

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Copyright information

© World Molecular Imaging Society 2018

Authors and Affiliations

  • Abdullah A. Alharbi
    • 1
    Email author
  • Fahad M. Alshehri
    • 2
  • Abdulrahman A. Albatly
    • 1
  • Bert-Ram Sah
    • 1
  • Christoph Schmid
    • 3
  • Gerhard F. Huber
    • 4
  • Martin W. Huellner
    • 1
  1. 1.Department of Nuclear MedicineUniversity Hospital Zurich / University of ZurichZurichSwitzerland
  2. 2.Department of NeuroradiologyUniversity Hospital ZurichZurichSwitzerland
  3. 3.Department of Endocrinology, Diabetes, and Clinical NutritionUniversity Hospital ZurichZurichSwitzerland
  4. 4.Department of Otorhinolaryngology, Head and Neck SurgeryUniversity Hospital ZurichZurichSwitzerland

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