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Title

Diagnostic evaluation of 99mTc-TRODAT-1 SPECT in parkinsonism: Original Article

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Abstract

 Introduction: Parkinsonism as a group of movement disorders, exhibits similar clinical presentation. Therefore, clinically differentiating these diseases is difficult. We investigated the diagnostic value of 99m Tc-TRODAT-1 SPECT in this setting. Due to the fact that this modality has some limitations in imaging small organs like the subregions of basal ganglia, we also evaluated the use of anatomical magnetic resonance imaging (MRI) along with functional SPECT imaging in parkinsonism. Methods: This follow-up diagnostic test evaluation study was performed with 40 patients with the clinical presentation of parkinsonism, and 10 healthy subjects as controls. After administration of the radiopharmaceutical, SPECT images were acquired, then co-registered on MRI. Uptake values were evaluated in basal ganglia semi-quantitatively. Results: In this study, 99mTc-TRODAT-1 SPECT was able to differentiate essential tremor and healthy subjects from progressive supranuclear palsy (PSP) and Parkinson’ s disease (PD) with a sensitivity of 76. 47% and specificity of 100% at a cut-off of 0. 53; however, findings were not significant in differentiation of PD from PSP (P˃ 0. 05), and the results were similar in SPECT and co-registered MRI/SPECT images. In evaluation of the uptake pattern in basal ganglia, the lateralization of decreased uptake was only seen in PD; and in PSP, the dysfunction was bilateral in all patients. Conclusion: 99mTc-TRODAT-1 SPECT is sensitive and specific in diagnosing basal ganglia dysfunction; however, 99mTc-TRODAT-1 SPECT alone or co-registration on MRI are not adequate in differentiation of the etiologies of basal ganglia dysfunction.

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    APA: Copy

    Babaei Aghdam, Zahra, Najmi Tabrizi, Safa, Arasteh, Amin, Khalafi, Mohammad, GHOJAZADEH, MORTEZA, & MAHMOUDIAN, BABAK. (2021). Diagnostic evaluation of 99mTc-TRODAT-1 SPECT in parkinsonism: Original Article. JOURNAL OF RESEARCH IN CLINICAL MEDICINE, 9(1), 0-0. SID. https://sid.ir/paper/968804/en

    Vancouver: Copy

    Babaei Aghdam Zahra, Najmi Tabrizi Safa, Arasteh Amin, Khalafi Mohammad, GHOJAZADEH MORTEZA, MAHMOUDIAN BABAK. Diagnostic evaluation of 99mTc-TRODAT-1 SPECT in parkinsonism: Original Article. JOURNAL OF RESEARCH IN CLINICAL MEDICINE[Internet]. 2021;9(1):0-0. Available from: https://sid.ir/paper/968804/en

    IEEE: Copy

    Zahra Babaei Aghdam, Safa Najmi Tabrizi, Amin Arasteh, Mohammad Khalafi, MORTEZA GHOJAZADEH, and BABAK MAHMOUDIAN, “Diagnostic evaluation of 99mTc-TRODAT-1 SPECT in parkinsonism: Original Article,” JOURNAL OF RESEARCH IN CLINICAL MEDICINE, vol. 9, no. 1, pp. 0–0, 2021, [Online]. Available: https://sid.ir/paper/968804/en

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