Clinical Trial: Positron Emission Tomography Imaging of Brain Amyloid in Normal Pressure Hydrocephalus

Study Status: Terminated
Recruit Status: Terminated
Study Type: Interventional

Official Title: A Principal, Prospective, Open-label Biopsy Study to Validate Detection of Cerebral Cortical Amyloid With Flutemetamol (18F) Injection in Normal Pressure Hydrocephalus (NP

Brief Summary: To determine the level of association between the quantitative estimates of brain uptake of [18F]flutemetamol and the quantitative immunohistochemical and histochemistry estimates of amyloid levels in frontal lobe biopsy samples obtained from subjects during shunt placement for NPH.

Detailed Summary:
Sponsor: GE Healthcare

Current Primary Outcome: Standard Uptake Value Ratio (SUVR) at the Site of the Biopsy Based on the "Cerebellum" (CER) as the Reference Region. [ Time Frame: Post flutemetamol Injection ]

The level of association between the quantitative estimates of brain uptake of [18F]flutemetamol and the quantitative immunohistochemical estimates of amyloid levels in biopsy samples obtained during shunt placement in patients who have Normal Pressure Hydrocephalus (NPH). The quantitative estimates of brain uptake of [18F]flutemetamol (SUVR) will be made from the analysis of PET images.


Original Primary Outcome: Brain uptake of [18F]flutemetamol [ Time Frame: Time zero equals the date of PET imaging. A follow-up phone call approximately 24 hours after the [18F]flutemetamol will be made to assess potential adverse events (AEs). ]

Determine the level of association between the quantitative estimates of brain uptake of [18F]flutemetamol and the quantitative immunohistochemical estimates of amyloid levels in biopsy samples obtained during shunt placement in patients who have NPH. The quantitative estimates of brain uptake of [18F]flutemetamol (SUVR) will be made from the analysis of PET images.


Current Secondary Outcome: Standard Uptake Value Ratio (SUVR) at the Site of the Biopsy Based on the "Pons" as the Reference Region. [ Time Frame: Post flutemetamol administration ]

The level of association between SUVR and the quantitative estimates (area percents) of amyloid levels for the following regions: Biopsy site and Contralateral and Composite Regions.


Original Secondary Outcome: Level of association between SUVR and the quantitative estimates of amyloid levels [ Time Frame: Time zero equals the date of PET imaging. A follow-up phone call approximately 24 hours after the [18F]flutemetamol will be made to assess potential adverse events (AEs). ]

To determine the level of association between SUVR and the quantitative estimates (area percents) of amyloid levels for the following regions:Biopsy site and contralateral to the biopsy site.


Information By: GE Healthcare

Dates:
Date Received: March 23, 2010
Date Started: March 2010
Date Completion:
Last Updated: November 20, 2013
Last Verified: November 2013