There are about 28871 clinical studies being (or have been) conducted in Canada. The country of the clinical trial is determined by the location of where the clinical research is being studied. Most studies are often held in multiple locations & countries.
Treatment of larger tumor volumes or ≥ 2 lung metastases simultaneously in lung cancer patient using Stereotactic Body Radiation Therapy (SBRT) in a mean-lung dose escalation study.
Helical tomotherapy is a novel radiation treatment machine that combines two existing technologies: spiral radiotherapy treatments combined with simultaneous computed tomotherapy imaging of the body. This new machine can potentially allow radiation treatments to be focused more precisely, and delivered more accurately than with existing radiation machines. In this study, helical tomotherapy will be used to provide radiation treatments (whole brain radiotherapy, daily over 10 treatments) that are commonly used to treat cancer metastatic to the brain. In addition, the individual spots of cancer (metastases) in the brain will be treated to a higher dose (approximately 2 times higher) than the dose to the whole brain. The purpose of this study is to determine the effectiveness of whole brain radiation with lesion boosting with the helical tomotherapy machine.
This is a randomized controlled study comparing EUS-FNA with 22 gauge and 25 gauge needles in consecutive patients. Summary Background: three needle sizes for endoscopic ultrasonography guided fine needle aspiration (EUS-FNA) are currently available: 22 Gauge (G), 25 G and 19 G. However, well design studies comparing them regarding efficacy and feasibility are lacking. Aims: to investigate diagnostic yield, specimen adequacy, feasibility and complications of the conventional 22 G compared with the 25 G needle. Methods: patients ≥ 18 years, referred to EUS-FNA for a solid lesion will be considered for inclusion. Patients with suspected diagnosis of lymphoma, GIST, sarcoidosis, significant coagulopathy (APT < 50% or platelets < 50000/mm3), use of warfarin or other anticoagulants, use of clopidogrel within 7 days of EUS, inability or refusal to sign the informed consent and pregnancy or suspected pregnancy will be excluded. Participants will be randomized to 22 G needle and 25 G FNA. Chi-square test will be used to compare proportions. Continuous variables will be compared using Student´s t test. A two-tailed P values of less than 0.05 will be considered statistically significant. The diagnostic yield of 25 G and 22 G needle will be evaluated by four criteria: sensitivity, specificity, positive predictive value and negative predictive value. An expected rate of 85% diagnostic yield from EUS guided FNA by using 22G needle will be considered. By using a power of 80% and an α value of 0.05 would be necessary 120 patients per group to detect a 15% difference in the rate of diagnostic yield.
The purpose of this of this study is to compare the use of Self Expanding Metal Stents (SEMS) to plastic stents for the treatment of benign biliary strictures secondary to chronic pancreatitis as it pertains to stricture resolution rates, complication rates and number of endoscopic retrograde cholangiopancreatography (ERCP) procedures during 24 months. Statistical testing will be performed to determine if the rate of stricture resolution for the metal stent is non-inferior to the plastic stent group.
This multicenter study was to evaluate subjects with chronic genotype 2 or 3 HCV infection who were interferon (IFN) ineligible, IFN intolerant or unwilling to take IFN. Participants were randomized in a 3:1 ratio to receive sofosbuvir (SOF)+ribavirin (RBV), or placebo to match SOF+placebo to match RBV. Randomization was stratified by presence/absence of cirrhosis. Approximately 20% of participants may have had evidence of cirrhosis at screening.
The purpose of this research project is to improve how we treat heart attacks. The study will assess whether it might not be better to wait a few hours before implanting the coronary stent into the coronary artery rather than implanting it immediately, in order to allow the drugs to completely dissolve the clot. This might help to reduce the risks of the clot migrating and damaging the heart. By delaying coronary stent implantation, we hope to be able to reduce the size of the infarction and reduce the risk of suffering from heart failure following a heart attack.
This is a diagnostic study to look for low levels of oxygen (hypoxia) in pancreatic cancer using an imaging test called positron emission tomography (PET). Hypoxia can influence how pancreatic cancer grows and responds to treatments such as chemotherapy and radiotherapy. The use of PET scans to measure hypoxia may be better and simpler than the approaches used previously. This study will assess whether or not PET scans using a tracer called 18F-FAZA (18F-Fluoroazomycin Arabinoside) can provide useful information about hypoxia in pancreatic cancer. Also as part of the study, a blood sample will be taken to study biomarkers (substances in the body that may be important indicators of hypoxia and/or pancreatic cancer) that may be useful in studying pancreatic cancer and hypoxia.
To evaluate the safety and efficacy of deoxycholic acid injection in the reduction of submental fat (fat below the chin).
The primary objective of this study is to determine if there is a time savings in the operating room by using a septal stapler instead of suture in closure of primary septoplasty. The secondary objectives are to determine the subjective outcome of patients undergoing closure with the septal stapler instead of suture via questionnaire, and to determine if there is a difference in postoperative complications between groups.
This proposed clinical trial, REACH, will enroll 538 persons with hypertension. All subjects will continue with their prescribed medications. Our main objective is to assess whether preventive e-counseling (provided through a website of the Heart and Stroke Foundation) improves blood pressure and cardiovascular risk status over a 12-month interval. REACH will also evaluate improvement in lifestyle behaviors that include diet, exercise, smoking, and adherence to prescribed medications. Finally, we will quantify the amount of e-counseling support that is required during REACH to evoke a significant reduction in blood pressure. It is hypothesized that e-Counseling (vs. Control) will significantly improve blood pressure and lifestyle behaviours at the 12-month assessment. The findings of this trial will provide information that is critical to our understanding of how internet-based programs can help to improve blood pressure and to reduce the risk for cardiovascular disease.