What is involved in a CT scan of abdomen?
An abdominal CT scan is an imaging method. This test uses x-rays to create cross-sectional pictures of the belly area. CT stands for computed tomography. This CT scan of the upper abdomen shows a large tumor (neuroblastoma) on the person’s right side (lower left side of picture).
What is the difference between MRI and CT scan?
The biggest difference between MRI and CT scans is that MRIs use radio waves while CT scans use X-rays. Following are several others. MRIs are typically more expensive than CT scans. CT scans may be quieter and more comfortable.
Why is a spiral CT done?
Spiral CT scan also creates more detailed pictures and may be better at finding small abnormal areas inside the body. It may be used to help diagnose disease, plan treatment, or find out how well treatment is working. Also called helical computed tomography.
Why do you have to drink water before a CT scan?
Preparing for a CT scan The water hydrates you prior to having contrast media for the CT. In the waiting area you will be asked to drink another 500ml of water which outlines the stomach and bowel clearly on the scans. The water also helps fill your bladder so that it shows on the scan.
How long does a abdominal CT scan take?
How long does the test take? The test will take about 30 to 60 minutes. Most of this time is spent getting ready for the scan. The actual test only takes a few minutes.
Why would a doctor order a CT scan after an MRI?
MRI scans can take a significant amount of time to complete. If you have a condition or injury that prevents you from lying still for that time frame, a CT scan can produce a more accurate image in a shorter time. Those who have medical implants of any kind are ineligible for MRIs and should undergo CT scans instead.
How does multislice CT work?
The multi-slice CT scanner refers to a special CT system equipped with a multiple-row detector array to simultaneously collect data at different slice locations. The multi-slice CT scanner has the capability of rapidly scanning large longitudinal (z) volume with high z-axis resolution.
What’s the difference between a CT scan and a spiral CT scan?
Abstract. Spiral computed tomography (SCT) differs from conventional CT (CCT) in that regions of the body can be rapidly imaged via continuous scanning. This is accompanied by simultaneous advancement of the patient, thus allowing volumetric data acquisition of up to 60 cm in less than a minute.
Do you need a full bladder for a CT scan?
For most scans, it is not necessary for you to have a full bladder. You will be told in your appointment letter if this is necessary. Sometimes we need to give you an injection of ‘dye’ during the scan. This helps us see your internal organs and blood vessels.