CT Scanner

Image source: Medical Imaging Services (www.medis.com.au)

CT scan or Computer Aided Tomography (sometimes called a CAT Scan) is a painless noninvasive medical test that helps physicians diagnose and treat medical conditions. This type of imaging combines the use of x-ray with the computer technology to produce images that are significantly more detailed than a regular x-ray.

Sun Radiology uses only 64-Slice CT Scanners in our practice. The state-of-the-art 64-Slice CT scanner refers to the newest generation in CT scan technology. The 64 “slices” refer to the number of detectors that are present on a CT scanner. While original computed tomography scanners used only one detector to pick up information, Multi-Detector Computed Tomography (MDCT) uses multiple detectors to create images of the body. This technology increases both “spatial” and “temporal” resolution, which means that we can create more detailed images in a shorter amount of time using less radiation. Other MDCT scanners use a lower number of detectors. These scanners are usually 4 or 16 slice, and do not produce the images same level of quality as 64-row detector scanners.

The scanner takes pictures of the inside of the body and joins them together in cross sectional views with the aid of a computer. The specialized scanner is operated by a skilled CT technician, and the expert interpretation of a radiologist combine together to diagnose diseases such as cancer, cardiovascular disease, infectious disease, trauma, and musculoskeletal disorders. The images from this study can be viewed on a computer monitor, printed on film or CD.

CT Scan Heart CT Scan Joint CT Scan Img CT Scan Lungs

How to Prepare for a CT Scan

Wear comfortable clothes to your appointment. You may be given a gown to change into for the procedure. Metal objects such as eyeglasses or earrings and hearing aids should be taken off before the scan begins.

You should always inform your technologist of any medication, allergies, recent sickness or history of kidney or thyroid problems before the scan begins. It is also important to let them know if you are breastfeeding, pregnant or of any possibility that you may be pregnant. If you are over 65 or have a history of kidney problems certain lab tests must be taken before the exam is started.

You may have been asked to prepare for the exam by avoiding food and drink for several hours prior. This may especially be the case if you have been given an oral contrast to drink. If you receive an IV contrast you will receive a small injection that is equal to a pin prick to administer the IV contrast.

CT Scanner Close UpThe scanner looks like a large donut with a table in front that you will lie upon. This table will be pulled through the hole in the scanner.

The technologist will step out of the room to acquire the images but will be able to see and hear you through a window The scanner will start and you may hear a slight whirling sound of machinery as the table moves though the hole in the CT scanner to take the pictures. You may be required to hold your breath for several seconds during the scan.
When you have completed the scan the technician will help you up from the table. You may return to your normal activities. Your physician will receive a report from the Radiologist on the results of the scan.

Useful Links

Brain / Head http://www.radiologyinfo.org/en/info.cfm?pg=headct
Sinus / IAC http://www.radiologyinfo.org/en/info.cfm?pg=sinusct
Neck http://www.radiologyinfo.org/en/info.cfm?pg=headct
Spine http://www.radiologyinfo.org/en/info.cfm?pg=spinect
Pulmomary Embolism http://www.radiologyinfo.org/en/info.cfm?pg=angioct
CT Chest http://www.radiologyinfo.org/en/info.cfm?pg=chestct
CTA http://www.radiologyinfo.org/en/info.cfm?pg=angioct
Coronory Calcium Score http://www.radiologyinfo.org/en/info.cfm?pg=ct_calscoring
CCTA/ CT Angiography http://www.radiologyinfo.org/en/info.cfm?pg=angioct
Abdomen http://www.radiologyinfo.org/en/info.cfm?pg=abdominct
Pelvis http://www.radiologyinfo.org/en/info.cfm?pg=abdominct
Kidney Stone http://www.radiologyinfo.org/en/info.cfm?pg=stones-renal
Hematuria / IVP/Urogram http://www.radiologyinfo.org/en/info.cfm?pg=hematuria
Virtual Colonscopy http://www.radiologyinfo.org/en/info.cfm?pg=ct_colo
CT Entrography http://www.radiologyinfo.org/en/info.cfm?pg=ctenterography