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Nuclear Medicine and Molecular Imaging

, Volume 52, Issue 5, pp 350–358 | Cite as

Value of SPECT/CT in Diagnostic I-131 MIBG Scintigraphy in Patients with Neuroblastoma

  • Daris Theerakulpisut
  • Yutapong Raruenrom
  • Nantaporn Wongsurawat
  • Charoonsak Somboonporn
Original Article
  • 32 Downloads

Abstract

Purpose

Diagnostic I-131 MIBG scintigraphy is an important imaging modality for evaluation of patients with neuroblastoma (NB) especially in centers where I-123 MIBG is not available. Single photon emission computed tomography/computed tomography (SPECT/CT) could potentially improve lesion detection over planar scintigraphy, but studies regarding its usefulness as an add-on to diagnostic I-131 MIBG scintigraphy are limited. This study aimed to determine the usefulness and factors related to usefulness of SPECT/CT in diagnostic I-131 MIBG scintigraphy in NB patients.

Methods

Usefulness of SPECT/CT for lesion detection, lesion localization, resolving suspicious findings, and clarifying the nature of lesions on anatomical imaging were retrospectively reviewed in 86 diagnostic planar I-131 MIBG scintigrams with add-on SPECT/CT.

Results

SPECT/CT detected additional lesions in 23.2%(20/86), helped localize lesions in 21.1%(8/38), resolved suspicious findings in 85.7%(6/7), determined functional status of lesions on anatomical imaging in 94.4%(17/18), and changed diagnosis from a negative to a positive study in 19.5%(8/41). Independent predictors of SPECT/CT being useful included presence of suspicious findings on planar imaging (OR 99.08; 95% C.I. 6.99–1404.41; p = 0.001), positive findings on planar imaging (OR 4.61; 95% C.I. 1.05, 20.28; p < 0.001), and presence of structural lesions on anatomical imaging (OR 32.54; 95% C.I. 5.37–196.96; p < 0.001).

Conclusion

SPECT/CT is a useful add-on to diagnostic planar I-131 MIBG scintigraphy. Predictors of usefulness of SPECT/CT include suspicious or positive findings on planar scintigraphy and the presence of structural lesions on anatomical imaging.

Keywords

Diagnostic I-131 MIBG scintigraphy MIBG Neuroblastoma Radionuclide imaging SPECT/CT 

Notes

Compliance with Ethical Standards

Conflict of Interest

Daris Theerakulpisut, Yutapong Raruenrom, Nantaporn Wongsurawat, and Charoonsak Somboonporn declare that they have no conflict of interest. No funding was received for conduction of this study.

Ethical Approval

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.

Informed Consent

The institutional review board of our institute approved this retrospective study, and the requirement to obtain informed consent was waived.

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Copyright information

© Korean Society of Nuclear Medicine 2018

Authors and Affiliations

  1. 1.Division of Nuclear Medicine, Department of Radiology, Faculty of MedicineKhon Kaen UniversityMuang, Khon KaenThailand

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