Click on a letter of the alphabet below to view a list of procedures:

M

Magnetic Resonance Imaging (MRI)

MRI is a diagnostic procedure that uses a combination of large magnets, radiofrequencies, and a computer to produce detailed images of organs and structures within the body. The patient lies on a bed that moves into the cylindrical MRI machine. The machine takes a series of pictures of the inside of the body using a magnetic field and radio waves. The computer enhances the pictures produced. The test is painless and does not involve exposure to radiation. Because the MRI machine is like a tunnel, some people are claustrophobic or unable to hold still during the test, and may be given a sedative to help them relax. Metal objects cannot be present in the MRI room, so persons with pacemakers or metal clips or rods inside the body cannot have this test done. All jewelry must be removed before the procedure.

MIBG Scintiscan

Some endocrine tumors produce catecholamine hormones such as adrenaline. This nuclear imaging technique involves giving patients an injection of MIBG - a substance that is used by the body to make adrenaline and other catecholamine hormones. The MIBG is radiolabeled so that it can be detected by a scan similar to a thyroid scan. If there is a focal spot on the scan this indicates the presence of a tumor such as a pheochromocytoma.

Multi-Step Operations (Laparoscopic Staged Procedures)

Patients whose body shape makes weight-loss surgery more technically difficult may benefit from a two-stage laparoscopic procedure. In such cases, surgeons perform a multi-step operation such as a gastric bypass or duodenal switch, in two simpler and safer operations.

The first stage consists of a sleeve gastrectomy, in which the left side of the stomach is surgically removed to substantially reduce its size, enabling the patient to lose 80-100 pounds or more. This makes the second-stage operation, which is usually performed 8-12 months later, substantially safer.

In the second stage, the "sleeve" stomach is converted into a formal gastric bypass or duodenal switch, which allows additional weight loss, and provides a more permanent result than sleeve gastrectomy alone.

Both stages are performed laparoscopically.