Arman Hassanzadeh-Rad
Research Center for Nuclear Medicine, Tehran University of Medical Sciences, Tehran, Iran
[ 1 ] - Comparing diagnostic performance of 131I-metaiodobenzylguanidine (131I-MIBG) and 99mTc-hydrazinonicotinyl-Tyr3-Octreotide (99mTc-HYNIC-TOC) in diagnosis and localization of pheochromocytoma and neuroblastoma
Introduction: The present study was aimed to assess the diagnostic performance of the two imaging methods of 131I-metaiodobenzylguanidine (131I-MIBG) and 99mTc-hydrazinonicotinyl-Tyr3-Octreotide (99mTc-HYNIC-TOC) in diagnosis and localization of pheochromocytoma and neuroblastoma. Methods: This study ...
[ 2 ] - Radiation induced myocardial perfusion abnormalities in patients with left breast cancer: A prospective study with short and long term follow up
Introduction:The external beam radiation therapy for patients with left breast cancer at the mastectomy site may cause myocardial perfusion abnormalities. We intended to study the change of these abnormalities at short and long term post radiotherapy follow up. Methods: Twenty patients with left and 20 patients with right breast cancer comprised the exposed an...
[ 3 ] - How to manage patients with undetectable thyroglobulin but thyroid residue after radioiodine ablative therapy in differentiated thyroid carcinoma, retreatment or observation?
Introduction:Differentiated thyroid carcinoma (DTC) follow-up after thyroidectomy and radioiodine-ablation is performed mainly by thyroglobulin (Tg), diagnostic iodine-131 whole body scan (DxWBS) and sonography. Some patients with undetectable Tg have thyroid-bed uptake after ablation in whom decision making regarding the need for retreatment is still controversial. Me...
[ 4 ] - Two-day stress-rest lower limbs perfusion scan in patients referred for myocardial perfusion imaging
Introduction: Peripheral Vascular Disease (PVD) is a major cause of morbidity and is associated with Coronary Artery Disease (CAD). We aimed to perform Lower Limb Perfusion Scan (LLPS) in patients referred for Myocardial Perfusion Imaging (MPI) and estimate prevalence of PVD in subgroups with normal and abnormal MPI results. We also compared quantitative indices of LLPS in pati...
[ 5 ] - Spinal cord metastasis from testicular seminoma detected by F-18 FDG PET/CT study prior to neurological symptoms: An unusual presentation
A 60-year-old patient with testicular seminoma was referred for F-18 FDG PET/CT Study to evaluate recurrence. In addition to hypermetabolic cervical, mediastinal and hilar lymph node tumoral metastases, segmental intense FDG uptake along the lumbar spinal cord suggestive of tumoral metastasis was noted which quite an unusual presentation is. At the time of PET study the patient was symptomless...
[ 6 ] - Comparison of transient ischemic dilation ratios in SPECT and SPECT-CT myocardial perfusion imaging in the low pre-test probability group
Introduction: The main purpose of this study was to compare transient ischemic dilation (TID) ratios in SPECT-low dose CT and SPECT Myocardial Perfusion Imaging (MPI) by application of different quantitative programs and quantify the possible shift in the upper normal limits of TID ratio in the SPECT-CT MPI. Methods: 149 Patients with low pre-test probability for coronary artery disease (CAD),...
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