Track topics on Twitter Track topics that are important to you
PURPOSE: This clinical trial is studying how well MRI works in assessing hypoxia in patients with localized prostate cancer undergoing stereotactic body radiation therapy.
- To characterize the status of global hypoxia within the prostate before stereotactic body radiotherapy (SBRT) as assessed by blood-oxygen-level-dependent and tissue-oxygen-level-dependent MRI.
- To characterize tumor vasculature and metabolism within the prostate before SBRT as assessed by dynamic contrast-enhanced MRI and magnetic resonance spectroscopic imaging, respectively.
- Correlate prostate and normal tissue hypoxia before SBRT with clinical outcomes (toxicity and biochemical [PSA] control) after SBRT.
OUTLINE: Within 1-3 weeks before beginning stereotactic body radiotherapy, patients undergo T2-weighted anatomic MRI, magnetic resonance spectroscopic imaging, blood-oxygen-level-dependent and tissue-oxygen-level-dependent MRI, and dynamic contrast-enhanced MRI.
Primary Purpose: Diagnostic
blood-oxygen-level-dependent functional magnetic resonance imaging, dynamic contrast-enhanced magnetic resonance imaging, magnetic resonance spectroscopic imaging, tissue-oxygen-level-dependent functional magnetic resonance imaging
Not yet recruiting
National Cancer Institute (NCI)
Published on BioPortfolio: 2014-08-27T03:19:51-0400
Blood-Oxygen-Level-Dependent (BOLD) functional Magnetic Resonance Imaging (fMRI) responses to painful mechanical stimulation of the OA knee following treatment with four consecutive doses ...
RATIONALE: Diagnostic procedures, such as functional MRI, may help measure oxygen levels in tumor cells and may help in planning cancer treatment. PURPOSE: This phase I trial is studying ...
This study will test the feasibility of using novel/existing imaging technologies focused on hypoxia measurements to determine "response to therapy" in pediatric soft tissue sarcomas as a ...
The purpose of this study is to determine the effect of a single dose infusion of AZD 6765 compared with placebo and ketamine on the blood oxygen level dependent signal using fMRI (functio...
The primary objectives of the study are as follows: To develop and optimize a renal functional magnetic resonance imaging (MRI) protocol consisting of Diffusion-Weighted Magnetic Resonanc...
The aim of this study was to test multiparametric magnetic resonance imaging including blood oxygen level-dependent (BOLD) imaging by T2* mapping, magnetic resonance elastography (MRE) by tomoelastogr...
Renal function varies according to the nature and stage of diseases. Renal functional magnetic resonance imaging (fMRI), a technique considered superior to the most common method used to estimate the ...
To assess the application of functional neuronavigation based on preoperative structural and functional magnetic resonance imaging, including diffusion tensor imaging (DTI) with or without the blood o...
Overhauser-enhanced Magnetic Resonance Imaging (OMRI) is a double resonance technique applied for oxygen imaging in aqueous samples and biological tissues. In this report, we present an improved OMRI ...
In adults, hypothalamic gliosis has been documented using quantitative T2 neuroimaging, whereas functional magnetic resonance imaging (fMRI) has shown a defective hypothalamic response to nutrients. N...
The use of molecularly targeted imaging probes to localize and/or monitor biochemical and cellular processes via various imaging modalities that include RADIONUCLIDE IMAGING; ULTRASONOGRAPHY; MAGNETIC RESONANCE IMAGING; fluorescence imaging; and MICROSCOPY.
Visualization of the heart structure and cardiac blood flow for diagnostic evaluation or to guide cardiac procedures via techniques including ENDOSCOPY (cardiac endoscopy, sometimes refered to as cardioscopy), RADIONUCLIDE IMAGING; MAGNETIC RESONANCE IMAGING; TOMOGRAPHY; or ULTRASONOGRAPHY.
A technique applicable to the wide variety of substances which exhibit paramagnetism because of the magnetic moments of unpaired electrons. The spectra are useful for detection and identification, for determination of electron structure, for study of interactions between molecules, and for measurement of nuclear spins and moments. (From McGraw-Hill Encyclopedia of Science and Technology, 7th edition) Electron nuclear double resonance (ENDOR) spectroscopy is a variant of the technique which can give enhanced resolution. Electron spin resonance analysis can now be used in vivo, including imaging applications such as MAGNETIC RESONANCE IMAGING.
Spectroscopic method of measuring the magnetic moment of elementary particles such as atomic nuclei, protons or electrons. It is employed in clinical applications such as NMR Tomography (MAGNETIC RESONANCE IMAGING).
A type of MAGNETIC RESONANCE IMAGING that uses only one nuclear spin excitation per image and therefore can obtain images in a fraction of a second rather than the minutes required in traditional MRI techniques. It is used in a variety of medical and scientific applications.
Radiology is the branch of medicine that studies imaging of the body; X-ray (basic, angiography, barium swallows), ultrasound, MRI, CT and PET. These imaging techniques can be used to diagnose, but also to treat a range of conditions, by allowing visuali...
In a clinical trial or interventional study, participants receive specific interventions according to the research plan or protocol created by the investigators. These interventions may be medical products, such as drugs or devices; procedures; or change...