At a glance
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Pre-Operative Nodal Staging of Thyroid Cancer Using Ultra-Small Superparamagnetic Iron Oxide Magnetic Resonance Imaging (USPIO MRI): Preliminary Study
In Brief
A clinical study evaluating Ferumoxytol and Nanoparticle MRI for Papillary Carcinoma of Thyroid Gland and 2 related conditions. Completed, enrolled 12 participants across 1 site.
Detailed Summary
The purpose of this research study is to see if a specific kind of MRI can identify small and otherwise undetected abnormal lymph nodes in patients with thyroid cancer who are undergoing surgery. The MRI is called Ultra-Small Superparamagnetic Iron Oxide Magnetic Resonance Imaging (USPIO MRI), and uses an experimental contrast agent (ferumoxytol), to try to identify these lymph nodes. The MRI uses magnetic waves to take images (pictures) of the body and is commonly used in medical testing. Ferumoxytol is FDA approved as an iron replacement product for the treatment of iron deficiency anemia in adult patients with chronic kidney disease. In this research study, the investigators want to see if Ferumoxytol will help to identify very small metastases that are not usually seen on standard MRI scans. If the use of USPIO MRI with the experimental agent ferumoxytol identifies very small metastases in lymph nodes, your surgeon may decide to remove them. After the surgery, the nodes will be stored and then analyzed to assess the ability of USPIO MRI and ferumoxytol to detect cancer in very small metastases in the lymph nodes.
Study Details
Timeline
Interventions
Ferumoxytol will be administered as an undiluted intravenous injection dose of 6 mg/kg body weight, up to a maximum dose of 510 mg, delivered at a rate of up to 1ml/sec. Each ml of the supplied agent contains 30 mg of elemental iron and the dose will be titrated based on patients body weight in kilograms; for example at a dose of 6 mg/kg, the dose for a 50 kg person will be 50 x 6 = 300 mg. As the vial contains 30 mg/ml, 10 cc of the dose will correspond to the required 300 mg dose.
Each subject will have one MRI scan. At the initial pre-scan visit, the subject will receive the ferumoxytol infusion. Within 48-72 hours after ferumoxytol infusion, a scan will be performed. Subjects will be imaged at Massachusetts General Hospital using commercial 3.0T imaging systems using dedicated neck coil and approved imaging protocols. The MR imaging will include conventional T1 and T2 weighted spin echo and 3 D gradient echo sequences.