Clinical Trials

UCLA Radiological Sciences is engaged in investigating new approaches to diagnosing and treating diseases and conditions.

Doctors with patients

The clinical trials are done in close collaboration with scientists and physicians from many areas of expertise. All trials are overseen by the Institutional Review Board (IRB) to ensure the highest ethical standards. 

The following lists the clinical trials that are currently recruiting participants:

NOLA (NeuWave Observational Liver Ablation) Registry

This is a multicenter, observational registry that follows patients for a total of 5 years from the date of the first liver ablation procedure with the NEUWAVE Microwave Ablation System. The data gathered from participating sites will be available to be analyzed to develop ablation parameter guidance for ablation approaches under varying patient liver tissue conditions and liver lesions.

This is an "umbrella registry," which was included as an optional component in other NEUWAVE studies; hence, data from consenting patients who are or will be enrolled in other NEUWAVE soft tissue liver lesion ablation studies will be included in this registry. All other patients will be enrolled and followed prospectively, enrolled retrospectively with prospective, longitudinal follow up, or enrolled retrospectively with all retrospective follow up.

Enrollment for this study will include up to 1,500 patients throughout the world who underwent or are scheduled to undergo microwave ablation of one or more soft tissue liver lesions using the NEUWAVE Microwave Ablation System or the NEUWAVE Microwave Ablation System with Ablation Confirmation. identifier: NCT04107766

Principal Investigator: Justin McWilliams, MD

Jaclyn (Calia) Stanziola,  908-218-2933,   [email protected]
Julie Peveto,  908-218-3659,  [email protected]

If interested, please check out the eligibility criteria on

Genicular Artery Embolization Vs Observation for Symptomatic Knee Osteoarthritis (GRAVITY)

The purpose of this clinical trial is to determine whether genicular artery embolization (GAE) is an effective way to treat knee pain from osteoarthritis. Pain from arthritis is often due to underlying inflammation in the joint. The inflammation is associated with increased abnormal blood flow going to the specific area of pain. If the investigator can reduce the blood flow, the inflammation can be reduced and the pain can be controlled.

The GAE procedure is an experimental procedure to decrease the blood flow (embolize) to the specific region of the knee that is causing the pain. This will be done by infusing microscopic spheres into the specific blood vessel (genicular artery) supplying the area of pain in the knee. This is done through a procedure which is called an angiogram, which is done entirely through a pinhole at the creased of the thigh, using twilight (conscious) sedation.

The investigators have already completed an initial trial at UCLA, and shown that this procedure is safe and effective. The purpose of this new trial is to compare outcomes of people undergoing the GAE procedure to those who do not undergo the procedure. A total of 100 patients will be enrolled, and 2/3 of the patients will be randomly selected to undergo the GAE procedure. 1/3 will not undergo the procedure. This is known as a randomized trial. During the trial, all subjects will also get MRIs and fluid withdrawn from their knee joints at various timepoints in order to precisely figure out how the procedure works on a closer (microscopic) level. Identifier: NCT04682652

Principal Investigator: Siddharth Padia, M.D.

Aniket Joglekar, 310-948-8026, [email protected]
Saima Chaabane, PhD, 424-465-4482, [email protected]

If interested, please check out the eligibility criteria on and contact Aniket or Saima for more information.

Elbow Artery Embolization for Tennis Elbow

The purpose of this clinical research study is to examine whether embolization treatment of an elbow artery is a safe and effective way to treat elbow pain, specifically pain from tennis elbow. Embozene is a medical device made by Varian marketed in the United States for the treatment of hypervascular tumors and arteriovenous malformations. It consists of thousands of microscopic spheres that are injected into the artery to block the flow of blood to a specific region. One of the causes of pain in the setting of tennis elbow is increased blood flow going to the specific area of pain. In this study, we will investigate an experimental procedure to decrease the blood flow (embolize) to the specific region of the elbow that is causing the pain. This will be done by infusing Embozene particles into the specific blood vessel supplying the area of pain in the elbow. This is an investigational study to evaluate the safety and efficacy of elbow artery embolization (EAE) for the treatment of symptomatic lateral epicondylitis (tennis elbow). Identifier: NCT05325242

Principal Investigator: Siddharth Padia, M.D.

Christian Barrera, 310-882-8358, [email protected]
Saima Chaabane, PhD,  310-794-3546, [email protected]

If interested, please check out the eligibility criteria on and contact Christian or Saima for more information.

Simultaneous Multinuclear Metabolic MRI in Newly Diagnosed or Recurrent Glioma

This clinical trial constructs and tests a novel multinuclear metabolic magnetic resonance imaging (MRI) sequence in patients with glioma (brain tumor) that is newly diagnosed or has come back (recurrent). This trial aims to develop new diagnostic imaging technology that may bridge gaps between early detection and diagnosis, prognosis, and treatment in brain cancer. identifier: NCT05045027

Principal Investigator: Benjamin M. Ellingson

Saima Chaabane,  310-794-8995,  [email protected]
Halah Mansour,  310-794-5380,  [email protected]

If interested, please check out the eligibility criteria on

Integrating Quantitative MRI and Artificial Intelligence to Improve Prostate Cancer Classification

This study evaluates how new magnetic resonance imaging (MRI) and artificial intelligence techniques improve the image quality and quantitative information for future prostate MRI exams in patients with suspicious of confirmed prostate cancer. The MRI and artificial intelligence techniques developed in this study may improve the accuracy in diagnosing prostate cancer in the future using less invasive techniques than what is currently used. identifier: NCT04765150

Principal Investigator: Kyung H Sung, PhD

Contact: Nashla Barroso, 310-794-7952,  [email protected]   

If interested, please check out the eligibility criteria on

Cerebral Hemorrhage Risk in Hereditary Hemorrhagic Telangiectasia (BVMN6203)

This study is one of the three projects of an NIH Rare Disease Clinical Research Consortium. A "consortium" is a group of centres sharing information and resources to perform research. The consortium research focuses on brain blood vessel malformations in three different rare diseases.

The focus of this specific study is on Hemorrhagic Telangiectasia (HHT).

HHT is a condition characterized by blood vessel malformations, called telangiectasia and arteriovenous malformations (AVMs), occurring in the brain, nose, lungs, stomach, bowels and liver. Brain AVMs (BAVMs) in HHT are difficult to study because they are rare, affecting approximately 10% of people with HHT. While other types of BAVMs have been studied in depth, studies in the HHT population have been very small. Here, we propose the first large-scale collaboration by joining with 12 HHT Centers of Excellence in North America to perform a large study of risk factors for bleeding from BAVMs, called intracranial hemorrhage (ICH) in HHT patients.

The current standard of clinical practice across North America, is to screen all HHT patients for BAVMs with magnetic resonance imaging (MRI). If BAVMs are detected, patients are referred to a multidisciplinary neurovascular team for consideration for treatment. Treatment decisions are made on a case by case basis, balancing risks of complications from the BAVM with risks of therapy, but are limited by the few studies available in HHT. We hope that the knowledge we obtain about the risk factors for intracranial bleeding in these patients from this larger study will help us to improve the care of HHT patients.

We plan to study risk factors for rupture of BAVMs, including primarily genetics and imaging characteristics of the BAVMs. Knowledge about risk factors will help in the care and management of HHT patients. This will be achieved through the collection of health information to construct a HHT database, blood sampling and banking (through the National Institute of Neurological Disorders and Stroke [NINDS]), and through genetic analysis at the University of California San Francisco. identifier: NCT01158807

Principal Investigator: Justin McWilliams, MD

Contact: Victoria Rueda, MPH, 310-794-0376 ,  [email protected]  

If interested, please check out the eligibility criteria on

Effect of Addition of Steroids on Duration of Analgesia

The purpose of the study is to investigate the differences in post-procedural pain scores and narcotic use among patients who receive a Superior Hypogastric Nerve Block (SHNB) with and without corticosteroid performed as part of the Uterine Artery Embolization (UAE) procedure. identifier: NCT04126824

Primary Investigator: Jessica K. Stewart, MD

Halah Mansour,  310-794-5380,  [email protected]
Aniket Joglekar, 310-948-8026  [email protected]

If interested, please check out the eligibility criteria on

Comparing Ascites Relief In Two Standard Treatments: Large Volume Paracentesis Vs. Early Tips Using Viatorr Controlled Expansion Stents

For this study, the investigators will be collecting data based on patients' random selection to two different approved standard of care treatments for ascites: Subjects will get randomized into either Group A: Large Volume Paracentesis (LVP) with albumin infusion, or Group B: an early transjugular intrahepatic portosystemic shunt (TIPS) procedure. identifier: NCT04315571

Principal Investigator: Edward W Lee, MD, PhD

Arineh Aghakhani, 310-267-1268,  [email protected]  
Saima Chaabane, PhD. 310-794-8995,  [email protected]   

If interested, please check out the eligibility criteria on

Evaluating the Safety and Efficacy of the AlphaVac Multipurpose Mechanical Aspiration (MMA) F1885 PE for Treatment of Acute Pulmonary Embolism (APEX-AV)

To evaluate the safety and effectiveness of percutaneous mechanical aspiration thrombectomy using the AlphaVac Multipurpose Mechanical Aspiration (MMA) F1885 PE in a prospective trial of patients with acute intermediate-risk pulmonary embolism (PE). identifier: NCT05318092

Principal Investigator: Mona Ranade, MD.

Contact: Victoria Rueda, MPH, 310-562-9694,   [email protected]

If interested, please check out the eligibility criteria on

Quantifying Body Composition and Liver Disease in Children Using Free-Breathing MRI and MRE

Magnetic resonance imaging (MRI) is used to measure liver fat content and fatty tissues in the body, and magnetic resonance elastography (MRE) is used to measure liver stiffness. The information from MRI and MRE are used to understand risk factors and diagnose liver diseases, such as fatty liver disease and liver fibrosis. However, current MRI and MRE scans need to be performed during a breath-hold, which may be challenging or impossible in children and infants. The goal of this research project is to develop and evaluate new free-breathing MRI and MRE technology to improve the comfort and diagnostic accuracy for children and infants. identifier: NCT04591106

Principal Investigator: Holden Wu, PhD

Contact: Holden Wu, PhD, 310-267-6843,  [email protected]
Contact: Kara Calkins, MD, 310-825-9330,  [email protected]

If interested, please check out the eligibility criteria on

Aneurysm Genetic Risk in Patients With QIB Changes (AnGen)

Intracranial aneurysm rupture is a leading cause of hemorrhagic strokes which carry high mortality and disability rates as well as high healthcare costs. Unruptured intracranial aneurysms (UIA) are common in the general population, occurring in 1-2% of individuals. Previous studies have shown that UIA growth and rupture are strongly associated with each other, with growing aneurysms 9-12 times more likely to rupture, and nearly all aneurysms growing prior to rupture. Thanks to advanced medical imaging, UIA are now more and more often detected incidentally. However not all aneurysms qualify for preventive surgical or interventional procedures according to current International Study of Unruptured Intracranial Aneurysms (ISUIA) guidelines, and some must therefore be monitored for growth. Current guidelines are based heavily on size, an inconsistent predictor of future growth. To improve management strategies for individual patients and more comprehensively assess aneurysm risk, the investigators propose to identify risk factors related to growth.

Aneurysm etiology is multifactorial, with both genetic and environmental contributions to aneurysm formation, growth, and rupture. Exploring new risk factors based on aneurysm natural history and understanding the mechanisms underlying aneurysm rupture have been extensive research areas. As previous studies have shown that quantitative imaging biomarkers (QIB) can provide a more accurate assessment of the characteristics of aneurysms, the investigators propose a combined study which identifies QIB associated with aneurysm growth to identify factors related to growth. identifier: NCT05317169

Principal Investigator: Aichi Chien, PhD

Contact: Aichi Chien, PhD, 310-267-6837,  [email protected]
Contact: Victoria Rueda, 310-562-9694,  [email protected]

If interested, please check out the eligibility criteria on

MR Imaging and MR Spectroscopy of HIV (HIV)

The Center for Disease Control and Prevention estimates that 1,148,200 Americans aged 13 years and older are living with HIV infection, including 207,600 (18.1%) who are unaware of their infection. According to pathological data, central nervous system (CNS) involvement is commonly found during the early phase of infection. In vivo proton magnetic resonance spectroscopy studies of HIV-infected humans have demonstrated significant changes of metabolites observed in the brain N-acetylaspartate, creatine, choline, glutamate, glutamine and myo-inositol with varying changes in different brain regions. Diffusion tensor imaging (DTI) is a novel functional MRI technique which can be used to derive quantitative in vivo measurements of region-specific and diffuse brain alterations. DTI studies have demonstrated changes of mean diffusivity (MD) and fractional anisotropy (FA) in the various parts of brain. Diffusion abnormalities involving various regions of brain have also been observed in patients infected with HIV. One dimensional (1D) or two-dimensional (2D) magnetic resonance spectroscopic imaging (MRSI) technique has been used for many years to study the metabolites changes in HIV. MRI scan time necessary for the acquisition of high-resolution MRSI data with adequate spatial coverage may be prohibitively long for clinical exams. Thus, new imaging and bio-chemical characterization techniques are needed to allow repeated, non-invasive assessment of these processes in vivo. Since neuroinflammation is associated with increased brain water, diffusion tensor imaging (DTI) is sensitive to changes in white matter (WM) and inflammatory changes associated with HIV infections. Even though only single-voxel-based diffusion-weighted MRS has been previously investigated, altered diffusivity of non-water metabolites and its relationship with metabolic disturbance as well as structural and functional abnormalities in HIV has not been investigated. The brain apparent diffusion coefficient (ADC) changes of metabolites measured by the novel 3D MRSI technique will be correlated with the ADCs and fractional anisotrophy of water recorded by DTI and cell count to better understand the role of CNS involvement in HIV pathology. identifier: NCT05219279

Principal Investigator: Michael Albert Thomas, PhD.

Contact: Victoria Rueda, MPH, 310-562-9694,  [email protected]

If interested, please check out the eligibility criteria on