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RATIONALE: Diagnostic procedures, such as 64 Cu-DOTA-trastuzumab-labeled positron emission tomography, may help doctors to plan a better treatment.
I. Determine the dose of pre-administered cold antibody that optimizes image quality of 64Cu-DOTA-trastuzumab PET without increasing the radiation dose to the heart in women with metastatic HER2 positive breast cancer.
II. Determine whether tumor uptake on 64Cu-DOTA-trastuzumab PET correlates with tumor expression of HER2 in women with metastatic disease.
III. Perform an exploratory analysis of the relationship between uptake on 64Cu-DOTA-trastuzumab PET, HER2 overexpression, and inactivation of the PI3K/Akt pathway.
Patients undergo a positron emission tomography scan 24 - 48 hours after injection of 64 Cu-DOTA-trastuzumab.
Endpoint Classification: Efficacy Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Diagnostic
positron emission tomography, copper Cu 64-DOTA-trastuzumab
City of Hope
Not yet recruiting
City of Hope Medical Center
Published on BioPortfolio: 2014-08-27T03:14:58-0400
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An imaging technique using compounds labelled with short-lived positron-emitting radionuclides (such as carbon-11, nitrogen-13, oxygen-15 and fluorine-18) to measure cell metabolism. It has been useful in study of soft tissues such as CANCER; CARDIOVASCULAR SYSTEM; and brain. SINGLE-PHOTON EMISSION-COMPUTED TOMOGRAPHY is closely related to positron emission tomography, but uses isotopes with longer half-lives and resolution is lower.
An imaging technique that combines a POSITRON-EMISSION TOMOGRAPHY (PET) scanner and a CT X RAY scanner. This establishes a precise anatomic localization in the same session.
A method of computed tomography that uses radionuclides which emit a single photon of a given energy. The camera is rotated 180 or 360 degrees around the patient to capture images at multiple positions along the arc. The computer is then used to reconstruct the transaxial, sagittal, and coronal images from the 3-dimensional distribution of radionuclides in the organ. The advantages of SPECT are that it can be used to observe biochemical and physiological processes as well as size and volume of the organ. The disadvantage is that, unlike positron-emission tomography where the positron-electron annihilation results in the emission of 2 photons at 180 degrees from each other, SPECT requires physical collimation to line up the photons, which results in the loss of many available photons and hence degrades the image.
An imaging technique using a device which combines TOMOGRAPHY, EMISSION-COMPUTED, SINGLE-PHOTON and TOMOGRAPHY, X-RAY COMPUTED in the same session.
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