Nephrectomy Clinical Trials

Experimental: Renal Mass Patients

Patients will be enrolled for 2 MRI visits. These visits will include an approximately 1 hour research MRI scan and a total of between 3 and 5 hours Tc-99m DTPA scan.~In each MRI visit, patients will be scanned for approximately one hour including both standard-of-care clinical sequences and research-based Advanced Diffusion Imaging sequences, on a Prisma 3T MRI scanner. Following the MRI exam or on a day not more than a week after the MRI exam, patients will undergo renal function assessment via Tc-99m DTPA scan and patient's kidneys will be scanned using a gamma camera. Proteinuria will be assessed by standard of care urinalysis of specimens collected at each MRI visit for each patient. Blood test will be performed at each visit to estimate GFR (eGFR) from measurement of serum creatinine.