This is an open-label positron emission tomography/computed tomography (PET/CT) study to investigate the diagnostic performance and evaluation efficacy of 68Ga-NOTA-RM26 in Gastrointestinal stromal tumor（GIST）patients. A single dose of 55.5 to 148 MBq(1.5-4 mCi) of 68Ga-NOTA-RM26 will be injected intravenously. Patients underwent whole-body PET/CT scans at 30-90 minutes after intravenous injection.
Rm26 is a bioactive polypeptide containing 9 amino acid residues, which can specifically bind to gastrin releasing peptide receptor (GRPR, BB2 receptor). Previous studies have confirmed that there are a large number of GRPR receptors in human common types of tumors, such as lung cancer, breast cancer, prostate cancer, head and neck squamous cell carcinoma, glioma and gastrointestinal tumors. Therefore, the use of various radionuclide labeled gastrin releasing peptide receptor analogues RM26 for tumor targeted imaging and treatment greatly improves the early detection rate of tumor, and has important clinical significance and value in tumor staging, prognosis evaluation and curative effect evaluation.This prospective pilot study investigated the use of 68Ga-NOTA-RM26, an antagonist targeting gastrin-releasing peptide receptor (GRPR), for evaluating breast cancer using positron-emission tomography/computed tomography (PET/CT).
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
DIAGNOSTIC
Masking
NONE
Enrollment
30
68Ga-NOTA-RM26 were injected into the patients before the PET/CT scans
Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College
Beijing, Beijing Municipality, China
RECRUITINGStandardized uptake value of 68Ga-NOTA-RM26 in gastrointestinal stromal tumor
The quantitative analysis will be performed by the same person for all the cases, and the standardized uptake value (suv) of the tracer in Gastrointestinal stromal tumors will be measured.
Time frame: 1 year
Adverse events collection
Adverse events within 1 week after the injection and scanning of patients and patients will be followed and assessed
Time frame: 1 week
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