Validation of cardiac 123I-MIBG scintigraphy in patients with Parkinson’s disease who were diagnosed with dopamine PET

  • Kenji Ishibashi
  • Yuko Saito
  • Shigeo Murayama
  • Kazutomi Kanemaru
  • Keiichi Oda
  • Kiichi Ishiwata
  • Hidehiro Mizusawa
  • Kenji Ishii
Original Article

DOI: 10.1007/s00259-009-1202-1

Cite this article as:
Ishibashi, K., Saito, Y., Murayama, S. et al. Eur J Nucl Med Mol Imaging (2010) 37: 3. doi:10.1007/s00259-009-1202-1

Abstract

Purpose

The aim of this study was to evaluate the diagnostic potential of cardiac 123I-labelled metaiodobenzylguanidine (123I-MIBG) scintigraphy in idiopathic Parkinson’s disease (PD). The diagnosis was confirmed by positron emission tomography (PET) imaging with 11C-labelled 2β-carbomethoxy-3β-(4-fluorophenyl)-tropane (11C-CFT) and 11C-raclopride (together designated as dopamine PET).

Methods

Cardiac 123I-MIBG scintigraphy and dopamine PET were performed for 39 parkinsonian patients. To estimate the cardiac 123I-MIBG uptake, heart to mediastinum (H/M) ratios in early and delayed images were calculated. On the basis of established clinical criteria and our dopamine PET findings, 24 patients were classified into the PD group and 15 into the non-PD (NPD) group.

Results

Both early and delayed images showed that the H/M ratios were significantly lower in the PD group than in the NPD group. When the optimal cut-off levels of the H/M ratio were set at 1.95 and 1.60 in the early and delayed images, respectively, by receiver-operating characteristic analysis, the sensitivity of cardiac 123I-MIBG scintigraphy for the diagnosis of PD was 79.2 and 70.8% and the specificity was 93.3 and 93.3% in the early and delayed images, respectively. In the Hoehn and Yahr 1 and 2 PD patients, the sensitivity decreased by 69.2 and 53.8% in the early and delayed images, respectively.

Conclusion

In early PD cases, cardiac 123I-MIBG scintigraphy is of limited value in the diagnosis, because of its relatively lower sensitivity. However, because of its high specificity for the overall cases, cardiac 123I-MIBG scintigraphy may assist in the diagnosis of PD in a complementary role with the dopaminergic neuroimaging.

Keywords

123I-MIBG 11C-CFT 11C-Raclopride Scintigraphy Positron emission tomography Parkinson’s disease 

Copyright information

© Springer-Verlag 2009

Authors and Affiliations

  • Kenji Ishibashi
    • 1
    • 2
  • Yuko Saito
    • 3
    • 4
  • Shigeo Murayama
    • 4
  • Kazutomi Kanemaru
    • 5
  • Keiichi Oda
    • 2
  • Kiichi Ishiwata
    • 2
  • Hidehiro Mizusawa
    • 1
  • Kenji Ishii
    • 2
  1. 1.Department of Neurology and Neurological Science, Graduate SchoolTokyo Medical and Dental UniversityTokyoJapan
  2. 2.Positron Medical CenterTokyo Metropolitan Institute of GerontologyTokyoJapan
  3. 3.Department of PathologyTokyo Metropolitan Geriatric HospitalTokyoJapan
  4. 4.Department of NeuropathologyTokyo Metropolitan Institute of GerontologyTokyoJapan
  5. 5.Department of NeurologyTokyo Metropolitan Geriatric HospitalTokyoJapan

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