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Clinical use of 99mTc-HMPAO-labeled platelets in cerebral sinus thrombosis imaging

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Abstract

Magnetic resonance imaging (MRI) and computed tomography (CT) are not always conclusive for the detection of cerebral venous sinus thrombosis (CVST). 99mTc-HMPAO-labeled platelets may be useful in cases with high clinical suspicion. Three patients with headaches with or without intraparenchymal hemorrhage that were highly suspected to have CVST, despite inconclusive anatomical imaging, were selected for inclusion in the study. Platelets were extracted by two rounds of centrifugation from 49 ml of the patient’s whole blood. The platelets were labeled with 99mTc-HMPAO and any unbound 99mTc was removed by centrifugation. The re-suspension of 99mTc-HMPAO-labeled platelets in cell-free plasma was reinjected into the patients. After 2 h, planar and single photon emission computed tomography (SPECT) images of the head were obtained. Extensive clots were detected in all three patients, illustrated in the planar image and even clearer in the SPECT images. We propose that 99mTc-HMPAO-labeled platelet scan is a favorable imaging method for patients suspected to have CVST with inconclusive CT and MRI results.

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Funding

The research was done as a part of the Ph.D. thesis of Tehran University of Medical Sciences.

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Authors and Affiliations

  1. Department of Neurology, School of Medicine, Imam Khomeini Hospital, Tehran University of Medical Sciences, Tehran, Iran

    Abbas Tafakhori

  2. Department of Radiopharmacy, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran

    Mahdieh Parvizi

  3. Department of Nuclear Medicine, Vali-Asr Hospital, Tehran University of Medical Sciences, Tehran, 1419731351, Iran

    Saeed Farzanefar, Maryam Naseri & Mehrshad Abbasi

  4. Department of Nuclear Medicine, University Hospital Bonn, Bonn, Germany

    Hojjat Ahmadzadehfar

  5. Department of Medicinal Chemistry, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran

    Ali Khalaj

Authors
  1. Abbas Tafakhori
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  2. Mahdieh Parvizi
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  3. Saeed Farzanefar
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  4. Hojjat Ahmadzadehfar
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  5. Ali Khalaj
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  6. Maryam Naseri
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  7. Mehrshad Abbasi
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Correspondence to Mehrshad Abbasi.

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Informed consent was obtained from all individual participants included in the study.

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Tafakhori, A., Parvizi, M., Farzanefar, S. et al. Clinical use of 99mTc-HMPAO-labeled platelets in cerebral sinus thrombosis imaging. Acta Neurol Belg 119, 549–553 (2019). https://doi.org/10.1007/s13760-019-01107-5

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  • DOI: https://doi.org/10.1007/s13760-019-01107-5

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