Computed Tomography and Computed Axial Tomography Scans
A Computed Tomography (CT) scan is a special type of X-ray procedure that uses a computer to combine many images to generate cross-sectional views of the body. Also called Computed Axial Tomography(CAT) scans, this type of imaging produces detailed photos of internal structures such as the heart, lungs, brain, blood vessels and bones.
A CT scan may be used for the following reasons:
- To diagnose brain tumors, cancer, or stroke
- To prepare for angiography
- To find blood clots in legs
- To perform renal angiograms for people with hypertension
- To find carotid stenosis and blockages
128 Slice CT: Centegra’s newest state-of-the-art equipment
Centegra is the first in McHenry County and one of the first in Chicagoland to offer the latest CT imaging technology. Our SOMATOM ® Definition ASPlus 128 Slice CT provides the most advanced images available in the shortest amount of scan time. This scanner is evidence of Centegra’s commitment to bringing leading technology to our community.
What to Expect
Centegra’s medical professionals want to provide you a comfortable experience. Our Associates talk to you throughout the procedure and keep you informed about what to expect.
- You swallow a liquid contrast that tastes like water.
- Some people change into a gown.
- Once you lie on the table, pictures are taken of the necessary anatomy
- Some exams may require an IV contrast
- The test takes five to 15 minutes
Convenient Locations
Centegra Health System offers CT scans at several convenient locations throughout McHenry County.
- Centegra Hospitals in McHenry and Woodstock
- Outpatient centers located at Centegra Health Center – Huntley, Crystal Lake Medical Arts and Centegra Crystal Lake Imaging Center
To schedule an appointment at any facility, call (815) 334.5566.
Frequently Asked Questions
How long will my CT scan take?
Typical CT scans take about five to 15 minutes.
When will my doctor get the report?
Your prescribing physician will receive the report within 48 hours.
Can I take my medicines before test?
Yes, the CT technicians encourage you to take all your normal medications so your body is in its “natural” state when the exam is done.
Is the scan painful?
The CT scan is painless.




