Clinical Trials

The purpose of this study is to determine the usefulness of combining PET scan activity and MRI image biomarkers for the clinical management of spinal joint low back pain.

The purpose of this study is to demonstrate the feasibility of F18- FES PET/MRI in patients with endometriosis, to establish the normal bio-distribution of F18- FES in pre-menopausal women, and to compare the diagnostic performance of F18- FES PET/MRI with that of conventional imaging (ultrasound and MRI alone) using surgical findings as the reference standard.

Assessing disease activity in people with Takayasu's arteritis is difficult, as most people with the disease do not exhibit visible, measurable symptoms. Combination positron emission tomography/computed axial tomography (PET/CT) is a particularly sensitive, accurate scanning method that may improve researchers' ability to evaluate people with the disease. This study will determine the effectiveness of PET/CT in assessing disease activity in people with Takayasu's arteritis.

The purpose of this study is to find out if a PET/MR scan in combination with standard MRI and CT scans can improve the early detection and treatment of patients with prostate cancer.

The purpose of this study is to determine if a single ZTE MR sequence can replace the need for a CT of the pelvis to avoid an additional exam and avoid the radiation to these patients from CT.

To establish whether ZTE imaging of the infant calvarium can provide equivalent information to CT, specifically in reference to diagnosis for craniosynostosis.

The purpose of this study is to demonstrate the use of 3D ZTE imaging of the cervical spine to assess osseous neural foraminal stenosis and directly compare it to CT. Other objectives will include evaluation of ossification of the posterior longitudinal ligament, ossification of disc herniations, and comparison of ZTE derived imaging of pedicle morphology to the current reformats provided by CT. The ability to image metallic hardware with ZTE will also be assessed, if present; 56 participants.  Other cohorts being added is for those who are returning for aneursym ablation follow-up with medically indicated head MRI (adding reserach ZTE sequence) ...

The purpose of this study is to examine the ability of PCD-CT to (1) display subtle fractures of the wrist using the system’s increased spatial resolution compared to conventional wrist CT and MR; and (2)  evaluate the ability of PCD-CT with virtual non-calcium images to identify bone marrow edema at acute fracture sites.

The purpose of this study is to compare the accuracy of the Auto Registration capability on the EPIQ/PercuNav system against existing manual registration techniques using common anatomical landmarks, for image fusion.

To determine whether PET/MRI can accurately predict complete pathologic response from neoadjuvant chemoradiotherapy in patients with locally advanced rectal cancer

The objectives of this proposal are to evaluate new MRI software and hardware methods to improve dynamic imaging of the wrist.

The purpose of this study is to estimate the performance (sensitivity, specificity, accuracy) of dual energy CT for the detection of implant rupture and extracapsular silicone compared to standard multiplanar T1-, T2-weighted and silicone specific MR imaging.

This study will focus on demonstrating the benefits of Photon Counting Detector CT Scan (PCD-CT) for clinical indications and findings are expected to benefit the diagnosis and characterization of Coronary Artery Disease (CAD) and myocardial perfusion defects.

Specific Aim:  

In patients, measure the clinical impact of cardiac PCD-CT on patient diagnosis and management

Aims, purpose, or objectives:

1. Evaluation of quantitative biomarkers derived from simultaneous time-of-flight FDG PET-MRI/MRCP for assessment of response to neoadjuvant therapy in borderline resectable PDAC.
2. Evaluate the comparative performance of blood and FDG PET-MRI/MRCP based biomarkers for assessment of response to neoadjuvant therapy in borderline resectable PDAC.

The purpose of this study is to evaluate the diagnostic performance of quantitative MBF technique by MRI in patients with cardiomyopathy and to determine the correlation with the current clinical standard of 13N-ammonia PET.  

The purpose of this study is to estimate the performance (sensitivity, specificity, accuracy) of dual-energy CT of the breast for detection of breast cancer in the ipsilateral and contralateral breast compared to standard multihance breast MR imaging.  To determine the optimal workflow and images needed (multiplanar reconstructions, color maps, etc.) needed for routine interpretation of DE or quantitative CT imaging of contrast enhanced breast DECT.

The objective of this pilot research protocol is to evaluate the quality of PET from the SIGNA PET/MR system and to compare the quantitative accuracy of PET images from the PET/MR system to PET images from a standard PET/CT system. 

The purpose of this study is to evaluate the ability of PET/MRI (Positron Emission Tomography/Magnetic Resonance Imaging) to give physicians preoperative information about specific sites in the body that the endometrial cancer may be present. If the PET/MRI is accurate and successful in providing this information, then women in the future may be able to have less extensive surgery for their endometrial cancer after evaluation with PET/MRI.

Evaluation of TOF FDG PET-MRE for identification of predominantly fibrotic small bowel strictures in Crohn’s disease.

The purpose of this study is to identify early response biomarkers from biological or functional imaging to better align with clinical trial endpoints and minimize sarcoma patient toxicities.

The purpose of this study is to evaluate an attenuation map for a transmit/receive (T/R) head coil used on the GE SIGNA PET/MR system. An attenuation map of the T/R head coil will be developed and evaluated in phantom experiments followed by the patient studies. The repeatability of generating patient-specific attenuation maps from Zero Echo Time (ZTE) MR images acquired with the T/R head coil will also be assessed.

The first objective of this pilot research protocol is to evaluate the quality of PET from the SIGNA PET/MR system and to compare the quantitative accuracy of PET images from the PET/MR system to PET images from a standard PET/CT system. The second objective of this pilot research protocol is to compare the image quality from MRI images acquired on the SIGNA PET/MR to clinical MR images acquired on a standard 3.0T MRI system.

The purpose of this study is to compare the utility of whole body MRI (WBMRI) with diffusion-weighted imaging (DWI) and simultaneous 18F-FDG PET/MRI with time of flight (TOF) PET acquisition to identify and characterize osseous lesions in patients with multiple myeloma.

The purpose of this study is to assess and deploy a new PET/MR platform following the same quality control method as was done at other Mayo Clinic sites, i.e. Rochester and Arizona.

The secondary purpose is to initiate a data registry for the PET/MR studies allowing us to capture some basic information about the indications, findings, and relevant imaging and non-imaging biomarkers for the studies conducted. This will allow us to see trends in utilization as well as create preliminary data to inform future (IRB approved) investigations.

The purpose of the study is to collect representative clinical images (head and whole-body scans) of demonstrated diagnostic quality using the next-generation SIGNA PET/MR device equipped with investigational software components in adult population. The images and summary data from this study are intended for use in regulatory submission.

Investigators are doing this study to determine which of four imaging techniques: Fludeoxyglucose Positron Emission Tomography (18 FDG PET) computerized tomography (CT), 18 FDG PET Magnetic resonance imaging (MRI), C-11 acetate PET CT, and C-11 acetate PET MRI) is the best test for finding sites of active myeloma disease.

Since its launch in 2004, the overarching aim of the Alzheimer's Disease Neuroimaging Initiative (ADNI) has been realized in informing the design of therapeutic trials in AD. ADNI3 continues the previously funded ADNI-1, ADNI-GO, and ADNI-2 studies that have been combined public/private collaborations between academia and industry to determine the relationships between the clinical, cognitive, imaging, genetic and biochemical biomarker characteristics of the entire spectrum of Alzheimer's disease (AD). The overall goal of the study is to continue to discover, optimize, standardize, and validate clinical trial measures and biomarkers used in AD research.

The purpose of this study is to examine the relationship of ctDNA status and FDG PET/MRI findings with other clinicopathologic variables and standard staging examinations. We will develop a multivariable model combining ctDNA and FDG PET/MRI biomarkers to predict treatment response and survival. In addition, we will define the quantitative thresholds for early chemotherapy switch in patients who do not respond to first-line chemotherapy.

The purpose of this study is to evaluate the feasibility and diagnostic performance of 68Ga PSMA-dual contrast PET/MRI for detection and staging of Hepatocellular Carcinoma (HCC), and to compare it with standard-of-care (SOC) imaging. Additionally, this study aims to identify the biologic correlates of biomarkers derived from 68Ga PSMA-dual contrast PET/MRI with histopathology features and PSMA immunostaining of HCC.

The purpose of this study is to determine the performance of Dual-Energy CT (DECT) with Virtual Non-calcium (VNCa) and fat measurement in assessing multiple myeloma disease activity following treatment, with MRI and clinical/ laboratory parameters as reference standards.

The purpose of this study is to assess the combined impact of post-processing methods that quantify potential biomarkers of chronic liver disease (AEF, fECS) and that improve iodine signal (vMono+) on detecting liver fibrosis and hepatic masses or esophageal varices, in comparison to routine contrast-enhanced liver CT.

The purpose of this study is to utilize a novel approach of combining advanced radiation delivery with proton beam therapy with advanced tumor visualization with 18F-DOPA PET and MRI imaging. We will study the effectiveness and safety of this technique delivering the entire treatment over 1-2 weeks.

The general aim of this proposal is to evaluate new non-significant risk (NSR) MRI technology in a clinical setting, specifically the use of preclinical (non-FDA-approved) sequences (including but not limited to bSSFP, SSFSE) which have been modified from their standard counterparts to include interleaved 1D body navigator pulses.

The purpose o fthis study

A total of 8,000 patients presenting to CPSs with acute-onset AIS, ICH or aSAH and no history of dementia will be enrolled within 6 weeks of stroke onset.

All participants will undergo baseline screening for evidence of pre-stroke dementia. Those who pass baseline screening will complete a blood draw and a series of cognitive and functional assessments at baseline.

Participants will undergo in-person (3-6 months, 18 months) and telephone (annual) follow-up visits for the duration of the study to assess for longitudinal cognitive and functional outcomes. In addition to Tier 1 procedures, at each in-person follow-up visit: Tier ...