27 Clinical Trials for Various Conditions
This is a retrospective cross-sectional research intended to explore the utility of LIVERFASt in the clinical pathways for the detection of liver fibrosis and steatosis in comparison with the Magnetic Resonance Elastography (MRE) and MRct1 fibrosis classification (historical records) and to assess LIVERFASt performance for MR steatosis assessment in an United States adult miscellaneous population with available (historical) MR intracellular fat fraction assessment (ICFF) from a single tertiary US clinic.
The overall purpose of this study is to establish noninferiority of gadopiclenol MRI compared to gadoxetate MRI in terms of image quality and lesion detection/conspicuity in patients undergoing clinically indicated liver MRI in a prospective study. The research will be utilizing MRI; with enrollment goal of 75 subjects over the course of two years.
A Phase 1 dose escalation study to evaluate APR003 in patients with advanced colorectal cancer (CRC) with malignant liver lesions
The overall objective of this study is to evaluate the safety and diagnostic efficacy of Mangoral in liver MRI in participants with known or suspected focal liver lesions and severe renal impairment. The diagnostic efficacy of Mangoral will be assessed in terms of visualization of detected focal liver lesions in combined MRI (CMRI: combined Mangoral-enhanced and unenhanced MRI) compared to unenhanced MRI.
The objectives of this study are to demonstrate feasibility of an optimized, image-guided pre-planned workflow to deliver at least 25 Gy to the periphery of the target lesion while maintaining established dose constraints to normal tissues, and to determine the maximum tolerated dose (MTD) while evaluating treatment delivery, safety, and efficacy utilizing a pre-planned and optimized image-guided workflow for percutaneous HDR brachytherapy of liver lesions.
This clinical trial studies contrast-enhanced magnetic resonance imaging (MRI) in detecting nonmalignant and malignant liver lesions. Diagnostic procedures, such as MRI, may help find and diagnose nonmalignant and malignant liver lesions. Contrast agents, such as gadoxetate disodium and gadobutrol, may help doctors to see MRI images more clearly.
The primary objective of this study is to develop and validate simultaneous free-breathing 4D fat and water quantification and quantitative dynamic contrast enhanced perfusion in the liver. Secondary aims include developing and validating free breathing quantification of relaxation parameters T1 and T2, and developing and validating a minimal breath-hold (\< 8 s) high quality diffusion exam using highly accelerated steady state diffusion imaging sequences. Investigators aim to scan 100 subjects receiving liver biopsies as a part of their standard care and another 70 subjects with known benign lesions. The study is greater than minimal risk.
In this particular study the physicians want to use a new technique of how they obtain the PET/CT pictures. It is called breath-hold (BH) PET/CT". As the name suggests, they will ask the patient to hold their breath for about 20-30 seconds, and only during that time will they obtain pictures. This is repeated several times. In contrast to the standard PET/CT scan, they expect less "blurring" of the pictures, so that they can see the tumor better and measure the uptake of radioactive sugar in the tumor better and more reliably. Basically, this is the difference between taking pictures of a runner as compared to taking pictures of a person standing still. Since PET images need to be obtained over several minutes and people can not hold their breath for this extended time, we break the procedure into several cycles of 20-30 seconds (or longer, if possible) and then add all the "frozen" pictures in the end into one. They want to know if BH PET/CT scan measure changes in the cancer during therapy (i.e., from the baseline scan before therapy to the follow up scan at within 4 weeks later).
Medical records are reviewed to obtain information about the use of a MRI diagnostic imaging agent (contrast agent) called Primovist/Eovist in children older than 2 months and less than 18 years. Data that has been recorded in the child's medical records relating to the injection of Primovist/Eovist will be collected. Information will be collected from up to 2 weeks before the child received Primovist/Eovist until 12 months after the child received Primovist/Eovist. Copy of the child's MR images that were taken right before and after the child received Primovist/Eovist and all other reports (laboratory reports, other imaging reports, etc) that are part of the child's medical records during that time period will be collected.
The purpose of this study is to demonstrate the Sensitivity and Specificity of SonoVue®-enhanced ultrasound is superior to that of unenhanced ultrasound for the characterization of benign versus malignant FLLs using final diagnosis based on histology or combined imaging (CE-CT and/or CE MRI)/clinical data as truth standard.
The purpose of this study is to demonstrate the superiority of SonoVue®-enhanced ultrasound versus unenhanced ultrasound for characterization of Focal Liver Lesions using final diagnosis based on histology or combined imaging/clinical data as truth standard.
Primary Objective: 1. To compare the efficacy of 1.5T vs. 3T T1 and T2-weighted MR images sequences for the detection and evaluation of liver lesions.
Background: - Abscesses are a pocket of infection in an organ or tissue. Patients with a disease called chronic granulomatous disease (CGD) often develop these abscesses. CGD is an inherited disorder that affects how white blood cells function. Liver abscesses in people with CGD often require surgery to remove them and treat the infection. However, some people with CGD cannot have full surgery because it would be too risky. Researchers want to try a procedure called radiofrequency ablation (RFA) to treat these liver abscesses. RFA can usually be done without a major operation. This study will see if RFA is a safe and effective treatment for liver abscesses in patients with CGD. Objectives: - To see if RFA is a safe and effective treatment for CGD-related liver abscesses. Eligibility: - Individuals between 18 and 75 years of age with CGD who have liver abscesses that cannot be treated with surgery. Design: * Participants will be screened with a physical exam and medical history. Blood and urine samples will be collected. Imaging studies will be performed on the liver. * Participants will have RFA for the abscesses. RFA is an image-guided technique that heats and destroys specific tissue, such as tumor tissue. It will target any abscesses on the liver. * After the procedure, participants will stay in the hospital for monitoring before being released. * Participants will have regular follow-up visits for up to 1 year after treatment. Blood and urine samples will be collected. Additional imaging studies will be performed.
To prospectively collect and evaluate pre-operative, intra-operative, and post-operative variables for all patients undergoing surgical microwave ablation. All patients who have a surgical microwave ablation with the Neuwave system will be added to the database after their treatment and procedures have been completed.
This study will test the ability of an immune modulator, anti-OX40 (MEDI6469) to alter the immune cell environment within colorectal cancer metastases. The drug will be administered to patients before surgical treatment.
This study is being performed to confirm that the new technique, Model-Based Iterative Reconstruction (MBIR) with reduced radiation dose can deliver equivalent image quality for CT scans compared to current techniques (Filtered Back Projection with Adaptive Statistical Iterative Reconstruction (FBP with ASiR) and also to demonstrate that MBIR can improve general image quality characteristics at equivalent radiation dose levels.
This clinical trial studies ultrasound elastography in diagnosing patients with kidney or liver solid focal lesions. New diagnostic procedures, such as ultrasound elastography, may be a less invasive way to check for kidney or liver solid focal lesions.
To compare 2 different image creation/processing techniques during a standard CT scan in order to "see" problems in the liver and learn which method provides better image quality. The techniques use new artificial intelligence software to decrease image noise, which helps the radiologist to evaluate.
The goal of this study is to assess the physician and patient experience of radio frequency (RF) track cautery in patients undergoing needle biopsy of the liver, kidney, or spleen who have one or more risk factors for biopsy-related bleeding. RF track cautery involves inserting a bipolar electrode through the same introducer needle used for the biopsy, and heating the tissues along the path of the biopsy needle to prevent bleeding. This study primarily aims to assess the operator and patient experience during the use of track cautery. Secondary aims are to assess the technical success rate and procedure adverse events. Participants who enroll in the study will undergo track cautery as part of their clinically indicated liver, kidney, or spleen biopsy. After the procedure, they will fill out a brief survey asking about their experience during the procedure. Physician operators who perform track cautery as part of the study will also fill out a survey after each procedure asking about their experience using this technique.
This study will test the investigational antibody, MEDI6469 (anti-OX40), in combination with stereotactic body radiation in breast cancer patients that have liver or lung metastases and have received systemic therapy and have progressive disease. The investigators hypothesize that SBRT directed at metastatic breast cancer lesions will result in a systemic anti-tumor immune system response. This amplified and directed immune response could result in anti-tumor responses.
The purpose of this study to assess the image quality of the rapid magnetic resonance imaging (MRI) compared to the standard MRI.
This study aims to determine whether or not gadoxetate disodium (Eovist) enhanced magnetic resonance imaging (MRI) has a higher sensitivity for detecting hepatocellular carcinoma (Liver Cancer) comparison to multi-detector computed tomography (CT).
Acquire CT data and US and transducer position data (magnetic sensor system) of focal hepatic or renal lesions to serve as sample data sets for fusion algorithm development and subsequent optimization.
Background: - Ablation is a procedure that heats tumor tissue to a high temperature to destroy it. Doctors perform this procedure by putting a probe in the tumor. This delivers heat to the site. Currently, doctors tell what area is heated by using the probe s manufacturer estimates. These estimates are imprecise. Doctors insert small needles to measure the temperature around the area being heated. Doctors also perform scans of the area, but these cannot show which tissue has been heated and which has not. Right now, only contrast scans can show that. But researchers have developed software that uses images from routine scans to create a temperature map. They want to test the software to see if doctors can monitor the procedure without using more needles and without contrast scans. Objectives: - To test software that might help doctors perform ablations better in the future. Eligibility: - People over 18 years of age already scheduled to have an ablation. Design: * Participants will be screened with a medical history. * Participants will visit the clinic for their already-scheduled ablation. The doctor will use the study software to analyze the temperature in the area being heated. The software will not come into contact with a participant s body. - Participants will undergo scans that are necessary for the procedure, but one or two additional scans may be done as part of this study.
Gastric cancer continues to have a poor prognosis primarily due to the inability to detect it in its early stages. This study will develop and validate a blood assay to facilitate the non-invasive detection of gastric cancer.
This research study is creating a way to collect and store specimens and information from participants who may be at an increased risk of developing cancer, or has been diagnosed with an early phase of a cancer or a family member who has a family member with a precursor condition for cancer. * The objective of this study is to identify exposures as well as clinical, molecular, and pathological changes that can be used to predict early development of cancer, malignant transformation, and risks of progression to symptomatic cancer that can ultimately be fatal. * The ultimate goal is to identify novel markers of early detection and risk stratification to drive potential therapeutic approaches to intercept progression to cancer.
Endoscopic ultrasound-guided fine-needle aspiration (EUS-FNA) has become an important tool in the diagnostic evaluation of gastrointestinal tract lesions and other organ sites such as mediastinal and intra-abdominal lymphadenopathy, pancreatic masses, liver masses, left adrenal masses and gastrointestinal submucosal lesions. It provides crucial information that can have tremendous impact on patient management. FNA is typically performed using a 22- or 25-gauge needle with a stylet under EUS guidance. The lesion is punctured with a stylet in place in the needle. After withdrawal of the stylet, the needle is moved to and fro within the lesion and this process is repeated for each needle pass. It is currently believed that the use of a stylet for EUS-FNA improves the quality of specimens by preventing the tip of the needle being clogged up with tissue and hence enhances the diagnostic yield of specimens obtained. However, there are no data demonstrating clearly that the use of a stylet improves the yield of EUS-FNA. The reason why this question is important is because the use of a stylet during EUS-FNA is cumbersome, time and energy consuming and increases the costs of EUS-FNA needle systems. In this prospective randomized controlled trial, patients referred for EUS-FNA of mediastinal and intra-abdominal lymphadenopathy, pancreatic mass, liver mass, left adrenal mass and gastrointestinal submucosal tumors will be included. FNA will be performed with a 22-gauge needle under EUS guidance using suction with a 10 mL syringe by two experienced endosonographers. The technique to be used for fine needle sampling i.e. with a stylet in place or without a stylet for each FNA pass will be assigned by using a preprinted randomization scheme obtained from a sealed envelope and clearly documented. Each lesion will be sampled for a minimum of four needle passes. The pathologists providing the final interpretation will be blinded to technique of EUS-FNA (with or without stylet). The degree of cellularity, contamination, amount of blood, adequacy of sample, frequency with which a positive diagnosis is made will be compared between the two groups (EUS-FNA with stylet vs. EUS-FNA without stylet). The sensitivity, specificity, accuracy, positive predictive value and negative predictive value of each technique when compared to the final diagnosis will be calculated. Inter-observer agreement among cytopathologists will be assessed for specimens obtained from EUS-FNA with stylet and for those obtained from EUS-FNA without a stylet.