View clinical trials related to Molecular Imaging.
Filter by:According to the latest global cancer epidemiological data published by the International Agency for Research on Cancer, colorectal cancer (CRC) ranks 3rd in total incidence and 2nd in total mortality among all malignancies worldwide. The prognosis of CRC is directly related to tumor stage. The 5-year survival rate for early CRC can reach 90%, while less than 14% for advanced CRC. Therefore, early diagnosis of CRC is particularly important. Gastrointestinal (GI) endoscopy is an important method in the diagnosis of CRC. Currently, diagnosis of GI endoscopy is mainly based on morphological changes of tumors, while early-stage tumors are difficult to be detected because of the indistinguishable morphology. Studies have shown that the molecular function of cancer cells can be altered in early-stage tumors. The development of a new endoscopic system that can identify early tumor molecular function changes and improve the accuracy of morphological diagnosis will greatly improve the early diagnosis rate of CRC, which is the future direction of GI endoscopic system design and development. The combination of high-definition white light endoscopy, endoscopic cerenkov luminescence imaging (ECLI) and probe-based confocal laser endomicroscopy (pCLE) is ideal for future new GI endoscopy. High-definition white light endoscopy is helpful to quickly find and locate suspected abnormal mucosa; on top of this, ECLI enables molecule-specific functional imaging for accurate identification and determination of GI lesions; and further relies on pCLE for high-precision "cellular-level" lesion images for optical biopsy of lesions. Through the multimodal digestive endoscopy, structural imaging and functional imaging can be accomplished simultaneously, playing the innate advantage of multimodal information fusion diagnosis and facilitating the identification of early-stage tumors. In this clinical trial, twenty patients with colorectal cancer who underwent PET-CT in Xijing Hospital were enrolled. Multimodal digestive endoscopy, combination of high-definition white light endoscopy, ECLI and pCLE, was used to perform for each patient's rectal cancer. ECLI images were compared with PET-CT images, and pCLE images were compared with tumor histopathology, which evaluate the actual imaging effect of multimodal digestive endoscopy in human.
Background: Despite that up 90% of patients with early-stage breast cancer receives adjuvant treatment, there are still about 300 patients diagnosed with primary metastatic breast cancer (MBC) and about 1,200 patients who develop metastases after the primary treatment each year in Denmark. Aim: The investigators hypothesize that molecular evaluation with FDG-PET/CT and diffusion weighted MRI allows an earlier detection of failure to respond to potentially toxic drugs in patients receiving breast cancer directed treatments. The aims of our project are to address the following questions: - Does FDG-PET/CT allow an earlier detection of failure to respond to treatment for MBC than conventional CT? - Does FDG-PET/CT or MRI allow an earlier detection of failure to respond to treatment for bone metastatic disease than conventional CT? - Does the PET based criteria (PERCIST) have the potential to lead to changes in the treatment plans made from CT based criteria (RECIST)? - Does FDG-PET/CT give a more accurate diagnosis of MBC than conventional CT in terms of number and distribution of metastatic sites? Method: Part A - the accuracy study: The study population will comprise all women referred to Odense University Hospital with suspected metastatic breast cancer (MBC). The investigators expect to include 270 patients who will be examined with FDG-PET/CT. If bone metastases are detected, the patients will proceed to MRI. All patients with suspected metastases on FDG-PET/CT or MRI will have a biopsy from a suitable lesion Part B - the response evaluation study: The investigators expect to include 90 patients with biopsy-verified MBC. Patients will receive oncologic treatment according to national guidelines. Response to treatment will be evaluated by conventional CT criteria and compared to novel criteria according to FDG- PET/CT, and MRI. Test results will be blinded to each other, so that knowledge of other test results will be unknown for the reader of the CT, FDG-PET/CT or MRI, respectively Expected clinical impact: This project represents a truly multidisciplinary effort to improve the diagnosis, staging, and response evaluation of MBC. The investigators hope that patients will benefit in terms of being spared for ineffective toxic treatment due to earlier detection of failure to respond, and hence leading to earlier treatment transition. Patients are involved in the planning and conduct of the project.
Atherosclerotic plaque uptake of 18F-sodium fluoride (NaF) in positron emission tomography with computed tomography (PET-CT) was recently shown to correlate with clinical instability in patients with CV disease. We hypothesize that rosuvastatin reduces 18F-NaF plaque uptake. Our group will scan coronary, aortic and carotid arteries of high-risk CV subjects with 18F- NaF-PET-CT. Individuals with 18F-NaF-positive plaques will be treated with rosuvastatin for six months, followed by 18F-NaF-PET-CT re-evaluation.
The investigators developed 18F-IRS as a targeted molecular imaging agent for noninvasive and repeatable detecting EGFR-activating mutational status.
The investigators developed [68Ga]-labelling Anti-IGF-1R Affibody Molecule as a targeted molecular imaging agent for noninvasive and repeatable detecting IGF-1R expression status.
The investigators developed [68Ga]-labelling Anti-EGFR Affibody Molecule as a targeted molecular imaging agent for noninvasive and repeatable detecting EGFR-ECD expression status.
The investigators developed 18F-MPG as a targeted molecular imaging agent for noninvasive and repeatable detecting EGFR-activating mutational status. And use 18F-MPG to monitor EGFR-TKIs and chemotherapy treatment efficiency.
The imdazoline2 binding site (I2BS) is known to reside inside astrocytes. Changes in the numbers of I2BS in post mortem tissue has implicated them in a range of psychiatric conditions such as depression and addiction, along with neurodegenerative disorders such as Alzheimer's disease and Huntington's chorea. Preclinical studies have also demonstrated functional interactions with the opioid system, where I2BS ligands have been shown to affect tolerance to morphine and alleviate some of the morphine withdrawal syndrome in rats. Recently the I2BS and I2BS ligands have been shown to have some interesting analgesic effects in different models of pain and a novel I2BS ligand, CR4056, is currently undergoing Phase II clinical trials as a novel treatment for neuropathic pain and acute non- specific pain states. The location of I2BS on astrocytic glial cells and the possibility that they may in some way regulate glial fibrillary acidic protein have led to increased interest into the role of I2BS and I2BS ligands in conditions characterised by marked gliosis. The number of I2BS has been shown to increase in Alzheimer's disease post mortem, and it has also been suggested that I2BS may be a marker for the severity and malignancy of human glioblastomas. The lack of suitable imaging tools for the I2BS has meant that information regarding the number and distribution of I2BS in the brain has come from preclinical species and in vitro post-mortem studies. The recent development of [11C]BU99008 as a suitable PET ligand to quantify I2BS in vivo, enables the direct quantification of I2BS availability and regional distribution in the living human brain. In this study the investigators plan to utilise [11C]BU99008 to quantify the regional brain availability of I2BS in the human brain in vivo using PET.
The primary objective of this study is to determine if exercise, fasting, or eating prior to the molecular breast imaging study will have an effect on the uptake of the tracer in the breast tissue.