The mechanical process of removing waste products from the blood normally removed by the kidneys is known as:

The process referred to in the question is dialysis, which is a mechanical system used to remove waste products, excess fluids, and toxins from the blood. This treatment is most commonly utilized for patients with compromised kidney function or those who have kidney failure. Normally, the kidneys perform this vital role by filtering blood to maintain the body's fluid and electrolyte balance. However, when the kidneys cannot carry out this function effectively, dialysis serves as an artificial replacement.

Dialysis works by using a machine (hemodialysis) or a special solution (peritoneal dialysis) to filter waste and excess substances from the blood, thereby performing the essential job of the kidneys. This treatment is crucial for maintaining the patient’s health until they can receive a kidney transplant or, in some cases, for life if transplant is not an option.

The other options listed pertain to different medical procedures: a voiding cystogram is an imaging study of the bladder; an intravenous pyelogram is a type of X-ray imaging of the kidneys, ureters, and bladder; and cystoscopy is a procedure that allows a doctor to examine the bladder and urethra using a thin, flexible tube with a camera. None of these procedures involve the mechanical removal of waste from the blood like