Rectal Cancer Clinical Trial
Official title:
Pelvic Side Wall Lymph Node Detection in Rectal Cancer Using Dual Radioisotope and Fluorescence Guidance
A study to investigate if pelvic side wall lymph nodes that remain after neo-adjuvant chemoradiotherapy can be identified intraoperatively using dual radioisotope and fluorescence guidance.
Status | Not yet recruiting |
Enrollment | 10 |
Est. completion date | April 2024 |
Est. primary completion date | January 2023 |
Accepts healthy volunteers | No |
Gender | All |
Age group | N/A and older |
Eligibility | Inclusion Criteria: - 18 years of age or older - Primary diagnosis of biopsy-proven rectal cancer - Scheduled for curative robotic surgery of primary tumour - Have signed an approved informed consent form for the study - Be willing and able to comply with the study protocol Exclusion Criteria: - Known allergy or history of adverse reaction to Technetium-99m nanocolloid or indocyanine green - Pregnant or lactating subjects - Subjects who, in the Investigator's and/or designee's opinion, have any medical condition that makes the subject a poor candidate for the investigational procedure, or interferes with the interpretation of study results |
Country | Name | City | State |
---|---|---|---|
United Kingdom | University College London Hospital | London |
Lead Sponsor | Collaborator |
---|---|
University College, London |
United Kingdom,
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Lymph node detection with indocyanine green and near-infrared light source | Intraoperative identification of pelvic side wall lymph nodes using fluorescence. After resection of the rectal specimen the near infrared light source will be switched on and the pelvic side wall will be assessed for lymph nodes seen on SPECTCT. Primary outcome will be recorded as "yes" or "no". | 12 months | |
Primary | Lymph node detection with technetium 99m colloid and SENSEI gamma probe | Intraoperative identification of pelvic side wall lymph nodes using radioisotope. After resection of the rectal specimen the gamma probe will be switched on and the pelvic side wall will be assessed for lymph nodes seen on SPECTCT. Primary outcome will be recorded as "yes" or "no". | 12 months | |
Secondary | Radioactive count of identified lymph nodes (MBq) | Usability of drop in gamma probe - effectiveness 1
Intraoperative identification of pelvic side wall lymph nodes using radioisotope. After resection of the rectal specimen the gamma probe will be switched on and the pelvic side wall will be assessed for lymph nodes seen on SPECTCT. Secondary outcome is the gamma radiation count of identified nodes recorded in megabecquerel (MBq) |
12 months | |
Secondary | Background radioactive count (MBq) | Usability of drop in gamma probe - effectiveness 2
Intraoperative identification of pelvic side wall lymph nodes using radioisotope. After resection of the rectal specimen the gamma probe will be switched on and the pelvic side wall will be assessed for lymph nodes seen on SPECTCT. Secondary outcome is the gamma radiation count of background radiation, measured underneath camera port, pointing up towards port, recorded in megabecquerel (MBq) |
12 months | |
Secondary | Time to lymph node identification (seconds) | Usability of drop in gamma probe - effectiveness 3
Intraoperative identification of pelvic side wall lymph nodes using radioisotope. After resection of the rectal specimen the gamma probe will be switched on and the pelvic side wall will be assessed for lymph nodes seen on SPECTCT. Secondary outcome is time taken for lymph node identification, recorded in seconds |
12 months | |
Secondary | Usability of drop in probe (System usability scale) | Usability of drop in gamma probe - satisfaction
Intraoperative identification of pelvic side wall lymph nodes using radioisotope. After resection of the rectal specimen the gamma probe will be switched on and the pelvic side wall will be assessed for lymph nodes seen on SPECTCT. Secondary outcome is the usability of the SENSEI gamma probe using the System Usability Scale (Score 0-100) |
12 months | |
Secondary | Lymph nodes identified on SPECTCT | In the morning patients receive a peritumoral submucosal injection of technetium 99m nano colloid. After a 4 hour interval they undergo SPECTCT.
Number of lymph nodes identified on SPECTCT. |
12 months | |
Secondary | Concordance of nodes seen on PET MRI/CT and SPECTCT | In the lead up to surgery (>24 hours prior) patients will undergo PET MRI/CT. In the morning patients receive a peritumoral submucosal injection of technetium 99m nano colloid. After a 4 hour interval they undergo SPECTCT.
Percentage of nodes seen on PET MRI/CT seen on SPECTCT (%) |
12 months |
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