A thallium stress test is a nuclear imaging test that shows how well blood flows into your heart while youâre exercising or at rest. This test is also called a cardiac or nuclear stress test. During the procedure, a liquid with a small amount of radioactivity called a radioisotope is administered into one of your veins.
Peyronie's disease is a connective tissue disorder that causes scar tissue to form in the penis, and can be painful when the penis bends during erections. List Your Practice go
Other possible causes of hydronephrosis include: 1  Blood clots in the kidney or ureter. 2  Narrowing or stricture of the urinary tract due to injury, infection, birth defects or surgery.3  Nerve or muscle problems that affect the kidneys or ureters.4  Urinary retention due to an inability to empty the bladder.ther possible causes of hydronephrosis include: 1  Blood clots in the kidney or ureter. 2  Narrowing or stricture of the urinary tract due to injury, infection, birth defects or surgery.