Non-invasive Diagnostics of Pulmonary Hypertension With Dual Energy Computed TomographyApr 2013
The aim of the study is to determine relevant hemodynamic parameters for the diagnostics of pulmonary arterial hypertension (PAH) by dynamic contrast enhanced dual-energy CT (DE-CT). In this prospective study the investigators validate DE-CT results of patients against hemodynamic parameters from right heart catheterisation and control the results by other clinical investigations. The investigators expect that using this non-invasive method, parameters relevant for the diagnosis of the patients with PAH, like pulmonary blood volume, blood flow and perfusion heterogeneity, can be determined.
CardioPET as PET Imaging Agent to Assess Myocardial Perfusion and Fatty Acid Uptake in Known or Suspected CAD SubjectsApr 2013
The study is designed to evaluate how safe and how well an investigational imaging product CardioPET™ performs as compared to standard approved imaging products in assessing the function of heart muscle in coronary artery disease patients.
Effects of metformin on hepatic free fatty acid metabolism in type 2 diabetes asssessed by positron emission tomographyMar 2013
It is the general purpose of the trial to investigate whether the positive effects of metformin on blood lipids are caused by improved glycemic control and changes in body composition or if they are caused by direct effects on lipid metabolism. We specifically plan to: - investigate hepatic fatty acid uptake, reesterification and oxidation assessed by positron emission tomography (PET) - investigate the effect of metformin on whole body VLDL-TG oxidation and redeposition in adipose tissue.
Early Diagnosis of Alzheimer-like Dementia: Benefit of MRI and PET ImagingMar 2013
The physio-pathology of Alzheimer's disease (AD) remains unknown and there is no cure. Thus, the search for objective markers of preclinical first signs of cognitive impairment, is currently a major public health issue. Early detection of the disease is a major challenge to hope to slow or even stop the neurodegenerative process before the stage of dementia. In AD the investigators observe: A reduction in the volume of brain hippocampi associated with an alteration of the diffusion of water molecules in the white matter. A structural brain degeneration coupled with a decrease in cerebral glucose metabolism. Recent publications show that cerebrospinal fluid (CSF)flow is also altered, probably due to dysfunction of the choroid plexus. Hence the potential interest to study is, in addition to conventional imaging, the imaging of CSF dynamics and choroid plexus metabolism. In that aim,the investigators use two imaging modalities: Magnetic resonance imaging (MRI) is used to assess blood and CSF flow in the brain Positron emission tomography (PET) is used to assess glucose metabolism in grey/white matter and also in choroid plexus. The investigators expect that, because of choroid plexus atrophy in AD, CSF flow would be altered as well as glucose metabolism dynamic in choroid plexus.
Intraoperative MRI and 5-ALA Guidance to Improve the Extent of Resection in Brain Tumor Surgery (IMAGER)Feb 2013
The investigators hypothesize that the rate of radiologically complete resections of contrast-enhancing brain tumors following surgeries aided by use of 5-ALA induced fluorescence guidance and use of an intraoperative ultra-low field MRI is higher compared to surgeries aided by 5-ALA induced fluorescene alone.
Phase 1-2 Study of Total Bone Marrow Irradiation With Helicoidal Tomotherapy in 1st Myeloma Relapse (TOMMY)Feb 2013
In Multiple Myeloma, an adult hematological malignancy, mainly located in the Bone Marrow (BM), dramatic recent progresses have been observed, thanks to new agents (proteasome inhibitors and IMIDs). However, at time of first relapse, high-dose therapy followed by Stem Cell Rescue (SCR) is frequently mandatory as a consolidation in minimal residual disease, to healthy patients under 65 yo, combining Melphalan (MPH) and/or Total Body Irradiation. Modern irradiation modalities are now available by the use of HI-ART Tomotherapy system to realize a Total Bone Marrow Irradiation (TBMI), in order both to limit the dose administered to Organ at Risk (lungs, oral cavity) and to focus efficacy on BM. In this phase-1 study, the conditioning regimen before SCR will combine a fixed high-dose MPH (140 mg/m²) and a dose escalated TBMI, so as to define its Maximal Tolerated Dose (MTD) and the Dose Limiting Toxicities (DLT). An extended cohort will further in a phase-2 setting.
Presurgical Language Mapping With fMRI: Comparison of BOLD and fASL Techniques (MALTA)Feb 2013
One of the aim of the neurosurgical treatment of brain tumor is to offer the maximal resection with the minimal neurological risk. The presurgical mapping of eloquent areas with functional magnetic resonance imaging (fMRI) is helpful to plan the surgery. BOLD fMRI is now the gold standard to map language areas. However, BOLD signal is diminished near the brain tumor. It is now possible to detect cortical activation with arterial spin labeling (ASL) techniques, detecting variations of perfusion during an activation paradigm (fASL), fASL could be interesting to detect eloquent areas near a brain tumor.
Validation of Myocardial Perfusion Imaging (CameraCZT)Jan 2013
The new cadmium-zinc-telluride (CZT) technology is a powerful tool for cardiac nuclear medicine. The increased photon counting sensitivity of camera can be used to explore novel protocols like dual isotope (rapid stress Tl-201/rest Tc-99m protocol for use with high-speed SPECT MPI). The use of dual isotope imaging is very interesting because this imaging combines the use of thallium-201 with technetium-99m agents permitting optimal image resolution and simultaneous assessment of viability, all with an exam duration of approximately 20 minutes. However, no study compares stress thallium-201/rest technetium-99m sequential dual isotope high-speed myocardial perfusion imaging versus invasive coronary angiography. The investigators report here the first validation of high-speed protocol with dual isotope for myocardial perfusion imaging using invasive coronary angiography as the standard of reference.
Whole Body MRI Imaging in Multiple Myeloma at 3 Tesla MRI : Added Value of Diffusion Weighted ImagingJan 2013
Whole body MRI with diffusion weighted imaging is a useful imaging tool - staging and diagnosis - therapy monitoring All patients will be scanned before and during treatment. The findings on diffusion weighted imaging will be correlated to the golden standard (computer tomography and MRI (T1 and STIR)).
Fructose and Fructans in IBS (FABS)Jan 2013
The purpose of the study is to investigate if patients with Irritable Bowel Syndrome (IBS) who also report bloating are more likely to report clinically important gastrointestinal symptoms after consuming fructose or fructans than after consuming glucose. We will also use MRI imaging to investigate the mechanisms by which those symptoms might be caused.
Osteosarcoma and Ewing Sarcoma Treatment Response Assessment With Functional MRI Imaging in Children and Young Adults (FUBEO)Jan 2013
The purpose of the study was to investigate whether functional MRI imaging (diffusion weighted imaging) is useful for monitoring the therapeutic response of bone sarcomas in children and young adults. All patients will be scanned before, during and after chemotherapy. The findings on MRI will be correlated with histological finding after surgery. Second purpose : to define apparent diffusion coefficient value of the bone sarcoma. Third purpose : to try define prognostic factors, to investigate if there is a correlation between early treatment response and outcome.
fMRI analysis of the visual cortex in neovascular age-related macular degenerationJan 2013
To evaluate the activation pattern of the primary visual cortex in nAMD patients before and after ranibizumab therapy and to compare it with healthy controls.
The Value of Preoperative Sentinel Lymph Node Mapping by Pelvic MR Lymphangiography and SPECT-CT in Cervical CancerJan 2013
To study the concordance of sentinel node (SN) localization between preoperative Magnetic Resonance Lymphangiography and SPECT-CT SN mapping and the intra-operative SN procedure for low stage cervical cancer.
iMRI-guided Brain BiopsiesJan 2013
The aim of the study was to assess the safety and effectiveness of stereotactic brain tumour biopsy (STx biopsy) guided by low-field intraoperative MRI (iMRI) in comparison with its frameless classic analogue based on a prospective randomized trial.
Decoding Chronic Pain With fMRIJan 2013
Recent evidence suggests that chronic pain is associated with abnormal connectivity between brain regions associated with the processing of pain. We aim to test the diagnostic power of resting state functional magnetic resonance imaging (MRI) to diagnose patients with chronic back pain. Using new methods of image acquisition and analysis we aim to develop a computational method to correctly classify patients and matched control subjects.
Multimodal Imaging in Pre-surgical Evaluation of Epilepsy (EPIMAGE)Oct 2012
Epilepsy is the most common chronic neurological disorder in the world, affecting more than 50 million people worldwide. Approximately 35% of patients with epilepsy are refractory to all available antiepileptic drugs. Drug-resistant epilepsies are often partial or focal. Patients with drug-resistant focal epilepsy suffer from an increased risk of death, primarily due to seizure-related fatalities, in comparison with the general population. The only therapeutic option for this form of epilepsy is the surgical removal of the region of the brain responsible for seizures, called the epileptogenic zone (EZ). This requires the precise localization of the EZ based on a comprehensive pre-surgical evaluation of patients. Today the gold standard for localizing the EZ and validating a non-invasive technique for localization of the EZ remains intracerebral stereo-EEG (stereo-electroencephalography or SEEG) recordings of spontaneous seizures. The implementation strategy of the intracerebral depth electrodes is guided by clinical and neuroimaging data, including anatomical Magnetic Resonance Imaging (MRI), Positron Emission Tomography (PET) with FDG (fluoro-Deoxy-Glucose) and MagnetoEncephaloGraphy (MEG). Although the contribution of each technique in the pre-surgical localization of the EZ has already been shown, no wide-scale study has examined the cumulative contribution of these three techniques.
A Molecular and Functional Brain Imaging Study in Individuals With Down Syndrome and Healthy Controls Following Single Dose RG1662Aug 2012
This single-center, double-blind, placebo-controlled, parallel-group study with crossover component will evaluate the GABAAalpha5 receptor expression, occupancy and functional connectivity in the brains of individuals with Down syndrome and healthy controls following single dose RG1662. On two separate visits, no less than 96 hours and no more than 6 weeks apart, subjects will receive a single oral dose of either RG1662 or placebo followed by positron emission tomography (PET) and magnetic resonance imaging (MRI) scans.
Diagnostic Performance of 18F-FDG-PET and Diffusion-weighted MRI in the Assessment of Stage IB to IIB2 Cervical Squamous-cell Carcinoma Response to Concomitant Radiochemotherapy and Brachytherapy (ERRICC)Aug 2012
The main objective of this study is to evaluate the sensitivity of 18F-FDG-PET in the assessment of cervical cancer response to radiochemotherapy and brachytherapy. Secondary objectives focus on 18F-FDG-PET specificity and likehood ratios as well as diffusion-weighted MRI diagnostic performances.
Evolution of serologic biomarkers and diastolic function and segmentary contractility determined by echocardiography after treatment in Chagas diseasesAug 2012
Chagas disease (CD), caused by Trypanosoma cruzi, is endemic to Latin America, and is of emerging importance in non-endemic countries because migration of people infected with T. cruzi. Current methods for diagnosis of T. cruzi infection are not ideal. Existing drugs for treatment are very limited, produce severe side-effects, and their effectiveness cannot be properly evaluated. Reliable biomarkers for prognosis, early diagnosis and effectiveness of treatment will be investigated.
Interventional randomised, double-blind, parallel-group, placebo-controlled, exploratory study investigating the effects of Lu AA21004 on cognition and BOLD fMRI signals in subjects remitted from depression and controlsApr 2012
• to determine whether Lu AA21004 compared to placebo in subjects remitted from depression modulates the blood oxygen level dependent (BOLD) signal in functional magnetic resonance imaging (fMRI) of the brain areas associated with executive function (working memory) during performance of the N-back task. The regions of interest are within the prefrontal cortex and anterior cingulate • to determine whether Lu AA21004 compared to placebo in subjects remitted from depression modulates the blood oxygen level dependent (BOLD) signal in functional magnetic resonance imaging (fMRI) of the brain areas associated with spatial memory during performance of the Arena task., The region of interest is hippocampus • to evaluate the effects of Lu AA21004 compared to placebo in subjects remitted from depression on the BOLD signal in fMRI in other brain regions involved in the regulation of cognitive processes during working memory and planning performance (N-back and Arena task)
CD2 Lozenges in Preventing Acute Oral Mucositis in Patients With Head and Neck Cancer Receiving Radiotherapy and ChemotherapyMar 2012
This phase III trial studies how well Lactobacillus bevis CD2 lozenge prevents oral mucositis in patients with head and neck cancer who are being treated with cisplatin and radiation therapy. These results will be compared to results in patients using placebo lozenges.
Prospective study of 18F-RGD PET-CT in assessment of response to antiangiogenic treatment in patients with renal cancer and comparison with perfusion CTFeb 2012
To evaluate whether changes of uptake on 18F-RGD PET-CT before, during and after anti-angiogenic therapy are associated with tumour response in patients with cancer.
Magnetic resonance with gadoxetic acid for the diagnosis of hepatocellular carcinoma in patients with liver cirrhosis. Evaluation of its impact for the non-invasive diagnosis.Feb 2012
To establish the diagnostic accuracy of magnetic resonance imaging with gadoxetate disodium for the diagnosis of hepatocellular carcinoma that do not fulfil the established diagnostic criteria as per current guidelines of AASLD (American Association for the Study of Liver Diseases)
Dynamic Contrast Enhanced Computed Tomography (CT) for Head and Neck CancerFeb 2012
For patients undergoing treatment for head and neck cancer, this study will use dynamic contrast-enhanced CT scans to try to determine which lymph nodes in the neck contain cancer and require surgical removal.
Application of High Resolution Diffusion-Weighted MR Imaging Plus Sequence in Head and Neck CancerFeb 2012
Magnetic resonance imaging (MRI) is a diagnostic study that makes pictures of organs of the body using magnetic field and radio frequency pulses that can not be felt. The purpose of this study is to determine if a new MR imaging method can help tumor evaluation in head and neck cancer. The extra images will be obtained using Diffusion-weighted Magnetic Resonance Imaging which provides image contrast through detection of small restrictions in the movement of water molecules. This study may help us provide additional information about the tumor along with the picture of the organ.
Assessment of multidrug resistance in breast cancer with [11c]Tariquidar PETJan 2012
To correlate PET imaging outcome parameters (e.g. volume of distribution (VT) of [11C]tariquidar in tumor tissue) at staging with Pgp expression levels measured by IHC at baseline (diagnostic biopsy)
A Study of [F-18]HX4 (PET Imaging)Evaluated in Head and Neck Cancer PatientsDec 2011
The purpose of this trial is to determine what will be the optimal imaging protocol for Head and Neck Cancer patients after [F-18] HX4 injection. This study will provide guidance for future studies involving [F-18]HX4 in cancer patients.
National Screening in Denmark With MR Versus Mammography and Ultrasound of Women With BRCA1 or BRCA2 MutationsDec 2011
The purpose of the study is to determine whether MR of the breast is a better screening tool than mammography combined with ultrasound of the breast in women with BRCA1 or BRCA2 gene mutations.
A randomised phase II trial of [18F]fluorothymidine and the standard tracer [18F]Fluorodeoxyglucose in the assessment of systemic therapy response in triple negative breast cancer and their utility compared to conventional MRI imaging response, early ADC change and biopsy derived biomarkersDec 2011
Part A: To confirm repeatability of Positron Emission Tomography (PET) scan SUV measurement before chemotherapy in triple negative breast cancer using [18F]FLT and [18F]FDG tracers Parts A and B: To evaluate PET imaging using each of the two randomly allocated PET tracers ([18F]FLT and [18F]FDG) as a method for evaluating response to systemic therapy in primary triple negative breast cancer at an earlier timepoint than is possible with standard imaging using MRI scans
Diagnostic accuracy of MRI, diffusion-weighted MRI, FDG-PET/CT and Fluoro-ethyl-choline PET/CT in the detection of lymph node metastases in surgically staged endometrial and cervical carcinomaDec 2011
This study will evaluate three new imaging techniques that may be used to identify malignant nodes preoperatively: (1) Diffusion Weighted MRI, (2) FDG-PET/CT and (3) FEC-PET/CT. The principal objective is to compare the diagnostic performance of each test (detection and false-positive rates) with that of the standard method (size criteria) with histology as the reference standard.
Non invasive imaging of [18F]HX4 with Positron-Emission-Tomography (PET) in Head and Neck Cancer.Nov 2011
Determine if tumor hypoxia can be accurately visualised with [18F]HX4 PET imaging in head and neck cancer tumors
FLT-PET Imaging of Brain Tumors in ChildrenOct 2011
Brain tumors are the leading cause of death from solid tumors in children. Tumor imaging is important in the management of these tumors, but current imaging methods have limitations in providing the necessary information for optimal treatment of these patients. The goal of this study is to evaluate the potential utility of positron emission tomography (PET) with 3'-deoxy-3'-[F-18] fluorothymidine (18F-FLT) in the medical management of brain tumors in children.
Characterization of focal liver lesions with Sonovue(R)-enhanced ultrasound imaging: a phase III, intrapatient comparative study versus unenhanced ultrasound imaging using histology or combined imaging/clinical data as truth standard.Jun 2011
To demonstrate the sensitivity and specificity of Sonovue-enhanced ultrasound is superior to that of unenhanced ultrasound for the characterization of benign versus malignant focal liver lesions (FLLs) using final diagnosis based on histology or combiend imaging (CE-CT and/or CE-MRI)/clinical data as truth standard.
Use of Interim PET Scan to Modify Therapy in Advanced Hodgkin's Lymphoma in Order to Improve OutcomesFeb 2011
this study is an attempt to improve the outcome in the small subset of poor responders to ABVD chemotherapy by the early use of Escalated BEACOPP chemotherapy
A Single-Arm Open-Label Multi-Center Study to Determine the Specificity of Flutemetamol (18F) Injection for Excluding the Presence of Brain Amyloid in Healthy Young Adult Subjects Aged 18 to 40Nov 2010
To determine the overall specificity of Flutemetamol (18F) Injection for excluding the presence of brain amyloid based on the visual assessment of a positron emission tomography (PET) scan by independent blinded readers reviewing images from a population of healthy young adult subjects aged 18 to 40.
Alzheimer's Disease Neuroimaging Initiative 2 (ADNI2)Oct 2010
The purpose of this study is to build upon the information obtained in the original Alzheimer's Disease Neuroimaging Initiative (ADNI1) and ADNI-GO (Grand Opportunity; a study funded through an NIH grant under the American Recovery and Reinvestment Act), to examine how brain imaging technology can be used with other tests to measure the progression of mild cognitive impairment (MCI) and early Alzheimer's disease (AD). ADNI2 seeks to inform the neuroscience of AD. This information will aid in the early detection of AD, and in measuring the effectiveness of treatments in future clinical trials.
Pre-Surgery Positron Emission Mammography in Patients With Newly Diagnosed Breast CancerOct 2010
The purpose of the study is to determine the optimal, lowest dose of radioactive tracer required for Positron Emission Mammography (PEM), and the accuracy and reliability of PEM in pre-surgical evaluations for patients with newly diagnosed breast cancer anticipating breast-conserving surgery but identified to have a second unsuspected breast cancer by MRI.
Primovist enhanced MRI for the detection and evaluation of focal liver lesionsMar 2010
To determine the diagnostic value of MR-Primovist and Respiratory Triggered DWI MRI for the detection and characterization of focal liver lesions .
Fludeoxyglucose F 18-PET/CT Imaging in Assessing the Tumor and Planning Neck Surgery in Patients With Newly Diagnosed Head and Neck CancerSep 2009
This phase II trial is studying fludeoxyglucose F 18-PET/CT imaging to see how well it works in assessing the tumor and planning neck surgery in patients with newly diagnosed head and neck cancer.
MIMEB - Molecular Imaging with erlotinib and bevacizumab. A Phase II Clinical Trial to Evaluate the Accuracy of FDG-/FLT-PET and DCE-MRI for Early Prediction of Non-Progression in Patients with Advanced Non Squamous Cell Non Small Cell Lung Cancer (NSCLC) treated with Erlotinib and Bevacizumab and to Associate Imaging Findings with Molecular MarkersSep 2009
To evaluate the accuracy of imaging findings in FDG-/FLT-PET and DCE-MRI after one week of treatment for early prediction of RECIST-based non-progression (CR+PR+SD) after 6 weeks of therapy in patients with NSCLC stage IIIb/IV treated first line with erlotinib and bevacizumab. To evaluate the accuracy of imaging findings in FDG-/FLT-PET and DCE-MRI after one week of treatment for early prediction of PFS in patients with NSCLC stage IIIb/IV treated first line with erlotinib and bevacizumab.
An International Study on Magnetic Resonance Imaging (MRI)-Guided Brachytherapy in Locally Advanced Cervical Cancer (EMBRACE)Jun 2009
Aims: To introduce MRI based 3D-4D BT in locally advanced cervical cancer in a multicenter setting within the frame of a prospective observational study. To establish a bench-mark for clinical outcome with image based BT in a large patient population with respect to local control, survival, morbidity and QoL. To establish a reference material with regard to image based DVH parameters according to the guidelines from the GEC ESTRO working group. To correlate image based DVH parameters for CTV and for OAR with outcome. To develop prognostic and predictive statistical models for clinical outcome including volumetric, dosimetric, clinical and biological risk factors. To establish radiobiological parameter estimates that will allow a precise risk estimation in individual patients and aid in the development of new treatment protocols.
Using Fluorine-18-Labeled Fluoro-Misonidazole Positron Emission Tomography To Detect Hypoxia in Head and Neck Cancer PatientsJan 2008
The purpose of this study is to evaluate low oxygen areas called hypoxia within the tumor. These low oxygen areas are thought to be the reason why tumors are more resistant to chemotherapy and radiation treatments.
Fludeoxyglucose F 18 PET Scan, CT Scan, and Ferumoxtran-10 MRI Scan Before Chemotherapy and Radiation Therapy in Finding Lymph Node Metastasis in Patients With Locally Advanced Cervical Cancer or High-Risk Endometrial CancerDec 2006
This phase I/II trial is studying how well fludeoxyglucose F 18 PET scan, CT scan, and ferumoxtran-10 MRI scan finds lymph node metastasis before undergoing chemotherapy and radiation therapy in patients with locally advanced cervical cancer or high-risk endometrial cancer.