Active clinical trials for "Neoplasm Metastasis"

Arterial spin labeling (ASL) is a non-invasive MRI technique that could help the radiologists to distinguish brain metastasis progression versus radionecrosis following gamma-knife treatment. The primary target of the study is to establish the diagnostic performances (specificity, sensitivity) of quantitative measures of ASL in brain metastases suspected of progression/radionecrosis after GK treatment

Contrast-enhanced magnetic resonance imaging is the most widely used examination for detecting the presence of brain metastasis. Functional sequences such as perfusion weighted imaging makes it possible to differentiate tumor recurrence from cerebral radionecrosis. However, this imaging technique may exhibit limitations, especially for brain lesions consisting of a mixture of necrotic tissue and tumor progression or depending on the location of the lesion in the brain. The use of 18F-DOPA PET is another option available to oncologists. Many studies on gliomas showed the superiority of this imaging technique over contrast-enhanced MRI. However, this imaging solution has been very poorly studied for brain metastases. The new PET technology equiped with silicon detectors makes it possible to obtain greater sensitivities than those of previous generations. It also make possible to obtain images in very short acquisition times. After injection, the hardware allows to obtain the perfusion kinetics of the lesion thanks to a very short temporal sampling (i.e. three seconds). The main objective of this pilot study is to evaluate the association between early activity measurements (< 4 minutes post-injection) of 18F-FDOPA in PET and the differential diagnosis between radionecrosis and recurrence of cerebral metastases treated by radiotherapy.

Diffusion-weighted magnetic resonance imaging (DWI/MRI) has been described in recent literature as a highly sensitive and specific modality for the detection of peritoneal metastases (PM). It has been demonstrated to be superior to computed tomography (CT) for patients with known peritoneal disease from colorectal and gynaecological malignancies. However, the literature is scarce on the role of DWI/MRI in patients with pancreatic ductal-adenocarcinoma (PDAC). The aim of this study is to prospectively assess the added value of whole-body DWI/MRI (WB-DWI/MRI) to CT for detection of PM in the preoperative staging of patients with high-risk PDAC and evaluate how it correlates with intraoperative findings.

Dynamic contrast-enhanced (DCE) magnetic resonance imaging (MRI) is a potentially powerful diagnostic tool for the management of brain cancer and other conditions in which the blood-brain barrier is compromised. This trial studies how well precise DCE MRI works in diagnosing participants with high grade glioma that has come back or melanoma that has spread to the brain. The specially-tailored acquisition and reconstruction (STAR) DCE MRI could provide improved assessment of brain tumor status and response to therapy.

The aim of this study is to prospectively determine the incidence of brain metastases in metastatic colorectal cancer patients using systematic annual screening by MRI.

As in other solid tumours, increasing evidence indicates that patients diagnosed with a limited number of prostate cancer metastases, so-called oligometastases, have a better prognosis compared with patients with extensive metastatic disease. Survival of patients with three or fewer metastases was superior compared with patients with more than three lesions. The introduction of novel imaging modalities such as Fluorocholine (FCH), Fuciclovine or Ga-PSMA PET CT has increased the detection of oligometastatic prostate cancer (PCa) recurrence, potentially justifying the use of a metastasis-directed therapy with radiotherapy (RT). Based on several studies, SBRT is now considered as a strongly validated option in oligometastatic prostate cancer. It is increasingly understood that cancers are recognized by the immune system, and, under some circumstances, the immune system may control or even eliminate tumors. Programmed death-ligand 1 (PD-L1) is transmembrane protein that has been speculated to play a major role in suppressing the immune system during particular events. PD-L1 is expressed in a broad range of cancers. Based on these findings, an anti-PD-L1 antibody could be used therapeutically to enhance antitumor immune responses in patients with cancer. Experimental data from multiple cancer models have provided cumulative evidence of an interaction of ionizing radiation with the systemic antitumor immunity and this has created several opportunities in the field. The oligometastatic setting appears to be the most relevant clinical situation to evaluate the immune response generated by radiotherapy and immune modifiers in patients with an intact immune system. The hypothesize is that Durvalumab will enhance immune response following SBRT targeting oligometastatic lesions. In this randomized 2:1 phase II trial of Stereotactic Body Radiation Therapy with or without durvalumab in oligometastatic hormone sensitive prostate cancer patients, Durvalumab will be started one month prior to SBRT to be able to evaluate PSA and immune response to the drug. It will be combined with SBRT and then given adjuvantly for a total of 12 months.

This study investigates the uptake of the radiopharmaceutical 68-GaNOTA-Anti-HER2 VHH1 in brain metastasis using PET/CT imaging. Patients with HER2-positive and HER2-negative breast cancer will be included and the uptake in their lesions will be compared. Optional 68-GaNOTA-Anti-HER2 VHH1 scans may be performed during or after treatment, at time points 12±6 weeks and 24±9 weeks after the first scan.

This research study involves the use of two navigation systems, the 3D Slicer-based navigation system, and the Siemens Monaco systems, to simplify the complexity of image-guided lymphadenectomy procedures (surgery to remove one or more lymph nodes) in patients with urological cancer.

If an abbreviated HBP protocol liver MR with gadobenate dimeglumine is shown clinically comparable to standard of care liver MR with gadoxetate disodium for detecting hepatic metastasis from colorectal cancer, its use will save time, cost, and patients' effort.

This study is for patients who have had surgery to remove brain metastasis and are planned to have stereotactic radiosurgery (SRS) after their brain surgery. It will be optional for patients to have a pre-surgery 18F-Fluciclovine PET/CT scan. The goal of the study is to determine whether a specific imaging agent, known as 18F-Fluciclovine, will help physicians evaluate the extent of surgery and determine if there is any visible tumor above what MRI alone can identify as well as improve the physicians' ability to detect recurring disease. This agent (18F-Fluciclovine) is investigational for the imaging of brain metastases.