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Home > Testing & Treatment > Screenings & Diagnosis
Please note that what follows below is general information about diagnostic exams. Your physician may recommend or schedule one of the following exams based upon your individual symptoms. If you have any questions, please see your physician.
A digital mammogram machine uses compression and X-rays to image your breast, but instead of capturing the image on film as with traditional mammography, the image is captured to a computer as a digital image file.
Learn about walk-in mammograms at Mercy Medical Center.
A colonoscopy lets the physician look inside your entire large intestine, from the lowest part, the rectum, through the colon to the lower end of the small intestine. The procedure is used to look for early signs of cancer in the colon and rectum. It is also used to diagnose the causes of unexplained changes in bowel habits. Colonoscopy enables the physician to see inflamed tissue, abnormal growths, ulcers and bleeding. See how a colonoscopy works here.
Bronchoscopy is a procedure that allows your doctor to look at your airway through a thin viewing instrument called a bronchoscope. During a bronchoscopy, your doctor will examine your throat, larynx, trachea and lower airways. Learn more about bronchoscopy.
A CT or CAT scan uses low-energy X-rays and computers to create a cross-sectional image of your body. It provides much more information than a basic X-ray.
A CT scan is performed while you lie on a long table that slides into a large circular opening in the imaging machine. The scanner will rotate around you, emitting X-rays and a buzzing noise. Sometimes an injection of a contrast agent is given to help make the image clearer for the doctor. You will be able to speak to the technologist while you are in the machine. The scan may take 15-30 minutes. Alert your doctor if you are pregnant or allergic to iodine.
An MRI machine creates an image of the body using a large magnet. You will lie on a table that slides into the MRI machine. You will not feel the magnetic field, but you will hear some noise. The procedure takes typically from 45-60 minutes, and you will be able to speak to the MRI technologist the entire time.
Hall-Perrine Cancer Center uses the 3Tesla (3T) MRI system, which is the strongest magnet approved by the FDA. The 3T has twice the magnetic strength of the more common 1.5 Tesla systems. The extra strength allows doctors to assess the human body in ways not previously possible and increases patient comfort.
A simple, safe screening and education for long-term, heavy smokers aged 55 to 77.
Tests and assessments are done in one location at Mercy. Call (319) 389-5165 to speak to our Lung Center Navigator to find out if you qualify.
The PET/CT scan is an advanced tool for diagnosing or screening for cancer. It combines these two procedures into one to detect cancer efficiently as well as how far it has spread and if current treatments are proving to be effective. The scanner combines PET and CT scanner technology to increase diagnostic capabilities and improve patient care with faster scan times and higher-quality images.
The highly sensitive PET scan detects the metabolic signal of actively growing cancer cells in the body and the CT scan provides a detailed picture of the internal anatomy that reveals the location, size and shape of abnormal cancerous growths.
A Single-Photon Emission Computerized Tomography (SPECT) scan lets your doctor analyze the function of some of your internal organs. SPECT scan is a type of nuclear imaging test, which means it uses a radioactive substance and a special camera to create 3-D pictures. While imaging tests such as X-rays can show what the structures inside your body look like, a SPECT scan produces images that show how your organs work. For instance, a SPECT scan can show how blood flows to your heart or what areas of your brain are more active or less active.
An ultrasound machine uses high-frequency sound waves and a computer to create pictures of your body. A special gel is put on the skin where you are to be scanned to help conduct the sound. Then, the technologist guides a sensor want across the skin that sends the sound waves throughout the area. Ultrasound may be used externally or internally in the rectal or vaginal areas, depending on area to be scanned. You will not feel or hear the high-frequency sounds the ultrasound machine makes. The images appear on a TV screen and are recorded. Depending on the area to be scanned, you may be asked to drink lots of water and then wait to urinate until after the exam; this helps to improve the image.