Nuclear Studies

Nuclear Stress Testing with Myoview or Sestamibi

Nuclear imaging is a sophisticated procedure, which combines the more familiar treadmill stress test with a state-of –the-art imaging system to produce a computerized image of the heart muscle. The test is conducted by a Certified Nuclear Technologist and supervised by one of our physicians.

The purpose of the exam is to evaluate blood flow to the heart muscle. An injection of radioactive tracer is given at rest (no exercise) and then again during the stress (exercise). The physician is then able to compare the amount of blood flow to the heart during both these periods. Imaging is performed in one day with the rest portion first, followed by exercise approximately one hour later. The entire test is approximately 3 hours in length.

Preparation is required prior to the test

Nothing to eat or drink after midnight, the night prior to the exam. Some medications may be discontinued prior to the test. The decision to withhold medications will be made by the ordering physician. Do not wear clothing with metal zippers, metal buttons or an underwire bra. Please wear comfortable clothes and sneaker for the exercise portion of the test.

Lexiscan Stress Testing

Lexiscan stress testing is another form of stress imaging; also know as a pharmacologic stress test. This is for patients who cannot or should not walk on a treadmill or those with certain EKG abnormalities.

Lexiscan is administered to the patient via an intravenous line and monitored by an EKG machine. A radioactive tracer is then injected and imaging is performed. The Lexiscan injection simulates a treadmill stress test by dilating the coronary arteries. The physician is then able to compare the amount of blood flow to the heart during rest (no exercise) and stress (simulated exercise). This exam is beneficial to patients who are unable to exercise of have other contraindications to exercising on the treadmill. The entire test is approximately 3 hours in length.

Preparation is required prior to the test

Nothing to eat or drink after midnight, the night prior to the exam; no caffeine products (i.e. coffee, tea, chocolate) at least 24 hours prior to the exam. Do not wear clothing with metal zippers, metal buttons or an underwire bra. Some medications may be discontinued prior to the test. The decision to withhold medications will be made by the ordering physician. Please notify our office of you have any chronic breathing problems such as asthma or emphysema.