There are about 173942 clinical studies being (or have been) conducted in United States. The country of the clinical trial is determined by the location of where the clinical research is being studied. Most studies are often held in multiple locations & countries.
The purpose of this study is to see if it is possible to establish a relationship between the blood flow and blood volume of liver tumors from CT body perfusion and the radiation dose deposited in the tumors from the radioembolization treatment as measured by PET/CT. The study will do this by: 1. Measuring the blood flow and blood volume of tumors in the imaging data from a CT body perfusion 2. Measuring the radioactivity in the tumors after the radioembolization treatment using PET/CT and then calculating the dose deposited in the tumor 3. Using statistical analysis to assess the relationship between the dose and the perfusion parameters In addition, the research may help develop a method for calculating the dose of radioembolization to be delivered to a liver tumor(s) using blood volume and blood flow data obtained from the CT body perfusion scans.
The purpose of this study will be to see if adolescents can advance bedtime above what can be accomplished by counseling alone simply by inputting their information into a sleep application diary and reporting this information back to their sleep doctor.
The purpose of this study is to determine whether Doxil (liposomal doxorubicin) given prior to MR-HIFU Hyperthermia is safe for the treatment of pediatric and young adult patients with recurrent and refractory solid tumors.
Performance evaluation of LFT Dye Monitor System using ICG - plasma disappearance rate value (PDR) to assess liver function in normal patients as well as in patients with mild to severe hepatic impairment compared to manual Serum ICG PDR.
The primary objective of the study is to examine the effectiveness of the Zephyr BioPatch in measuring position changes of a non-patient subject in a lab setting and to examine the effectiveness of the Zephyr BioPatch in measuring position changes of hospitalized patients.
Several studies have shown that TES in RP patients may help to slow the progressive deterioration of this degenerative disease. The end point of this clinical trial is to slow or stop disease progression with weekly treatment using TES for 1 year.
Hypogonadism (low testosterone) is becoming an increasingly recognized problem that affects numerous men in the United States. Symptoms may be always feeling tired, lower sex drive, and loss of muscle mass. Treatment typically involves testosterone in either injections or a topical gel form. However, administration of testosterone is not without side effects of its own. Testosterone supplementation therapy is known to cause a variety of side effects including high blood pressure and high lipids (fats) and an increased proportion of red blood cells. Side effects of increased red blood cells can include an increased risk of developing a blood clot. The increase in the red blood cells is related to dihydrotestosterone (DHT - a male sex hormone) activity. It is normal for the testosterone to become DHT. DHT has various effects on the body including growth of the prostate gland, baldness, and others and DHT levels have been linked to elevated red blood cell counts in men on testosterone. Finasteride is an FDA approved medication used in the treatment of benign prostatic hypertrophy (BPH) in men with enlarged prostate to improve symptoms and to reduce the risk of the need for surgery. Finasteride may prevent elevations in or reduce elevated red blood cell levels in men on testosterone.
Preliminary data show that high flow nasal air has been shown to reduce promote heat exchange due to evaporation of nasal mucus by the air flow resulting in heat loss. It is unclear whether unidirectional nasal airflow is well tolerated in healthy individuals. The central hypothesis of this proposal is that dry high flow nasal air will be sufficiently tolerated in healthy adults.
Methicillin-susceptible (MSSA) and Methicillin-resistant (MRSA) Staphylococcus aureus (SA) are two of the most important infectious pathogens in CF, with 69% of CF patients having lung infection with MSSA or MRSA in the last year. Wolter and co-workers recently demonstrated that a specific morphologic subtype of MSSA and MRSA, small-colony variant Staph aureus (SCV-SA), is associated with greater decline in lung function and worse clinical outcomes. SCV-SA is already recognized for its ability to contribute to persistent infection, likely due to SCV-SA's ability for intracellular growth, as well as its increased antibiotic resistance compared to normal-colony SA. To investigate the epidemiology and clinical significance of SCV-SA in CF, and explore the hypothesis that SCV-SA may require unique antibiotic treatment strategies to optimize clinical response, the investigators will perform the following: 1. Characterize the epidemiology of SCV-SA infection in both an adult and pediatric CF population and investigate the clinical significance of SCV-SA infection in CF by comparing clinical characteristics and outcomes of CF patients with SCV-SA compared to those with to normal-colony MSSA/MRSA. 2. Characterize the unique microbiologic characteristics of SCV-SA infection in CF by evaluating antibiotic susceptibility profiles and molecular characteristics of SCV-SA in a two large CF patient populations. 3. Perform a 16-patient pilot study of a novel treatment for SCV-SA infection in CF, utilizing low dose rifampin in combination with standard anti-SA antibiotics. These investigations will delineate the role of SCV-SA as a pathogen in CF and provide guidance to optimize treatment strategies of MSSA/MRSA CF lung infection.
An Endoscopic retrograde cholangio pancreatography (ERCP) with cholangioscopy (endoscope to directly visualize the bile duct ) is a procedure (a small flexible tube that is inserted into the participants mouth to the participants stomach and into the participants liver to visualize the bile duct) that is usually performed in patients for the following purposes : 1. The removal of all stones from the participants bile duct (if present). 2. Acquiring a tissue sample biopsy from any common bile mass to examine (if present). 3. Acquiring tissue sample biopsy from common bile duct narrowing (if present). However this procedure is associated with an increase risk of infection compared with the standard ERCP (ERCP without cholangioscopy). Previous studies have shown that despite the administration of antibiotics prior to these procedures, infection still occurs. This leads to a suspicion that other factors may be the cause in these infections. Factors such as age, race, gender and ethnicity have not been fully explored yet. This study aims to examine these factors in addition to others in patients who are undergoing ERCP with cholangioscopy as part of their routine medical care. This examination will allow us to bring out if any of the above mentioned factors may be involved in the development of an infection after ERCP with cholangioscopy.