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Application of PET/MRI in the Evaluation of the Efficacy of Neoadjuvant Therapy for Locally Advanced Rectal Cancer

RecruitingNAAges 18 Years - 75 YearsAllPeking Union Medical College Hospital
NCT06653452 on ClinicalTrials.gov ↗
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In plain words

What the trial is, and whether it could suit you

This study plans to include LARC patients receiving neoadjuvant therapy at this center, conducting PET/CT and PET/MR examinations before treatment, and PET/MR examinations before surgery after neoadjuvant therapy. The changes in the lesion before and after treatment will be compared to evaluate the efficacy of neoadjuvant therapy, including: the relief situation of the rectal primary lesion ; lymph node metastasis; local infiltration around the tumor; peritoneal and other distant metastases , etc. The pathological relief diagnosed by surgical pathology is the gold standard, and the predictive efficacy of PET/MR will be evaluated, comparing the advantages and disadvantages of 18F-FDG and 68Ga-FAPI PET/MR, and comparing with traditional PET/CT and rectal MRI to explore the value of PET/MRI in predicting the efficacy of neoadjuvant therapy in LARC patients.

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📋 Eligibility rules (as published)
Inclusion Criteria: * (1) Age 18-75 years old; (2) ECOG score 0-2; (3) Pathologically confirmed as rectal adenocarcinoma; (4) The lower edge of the tumor is within 12cm from the anal edge; (5) Clinically staged as cT3-4N0M0 or cTanyN+M0; (6) Untreated patients who have not received radiotherapy, chemotherapy, and surgery, etc.; (7) Good liver and kidney function, can tolerate radiotherapy and surgery; (8) Patients and their families can understand the research plan, voluntarily participate in this research and sign the informed consent form. Exclusion Criteria: * (1) ECOG score \> 2; (2) Patients with multiple primary colorectal cancers; (3) Patients with a history of other malignant tumors within the past 5 years (except for cured basal cell carcinoma, cervical carcinoma in situ, surgically treated localized prostate cancer, or surgically removed breast ductal carcinoma in situ); (4) Patients with intestinal obstruction, intestinal perforation, gastrointestinal bleeding, and other emergencies requiring emergency surgery; (5) Pregnant or lactating women; (6) Patients with a history of severe mental illness, immune diseases, and hormone medication; (7) Patients with contraindications for MRI, PET examination, radiotherapy, immunotherapy, or surgical treatment; (8) Patients who have participated in other clinical studies within the last 3 months; (9) Any other conditions deemed unsuitable for inclusion by the researcher.
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What it tests

  • 18F-FDG PET/CT and PET/MR scan, 68Ga-FAPI-04 PET/CT and PET/MR scan
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Where

1 site
Peking Union Medical College Hospital
Beijing, China
🤝 Taking part is your choice, and you can leave at any time. Only the trial team can confirm you are eligible — always decide together with your own doctor.
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