Computed Tomography (CT) Scan
Complex, high quality imaging using CT radiology
CT Scans Help Diagnose Health Conditions and Form Treatment Plans
The Computed Tomography (CT) Scan Department at Beth Israel Deaconess Medical Center (BIDMC) uses the latest imaging techniques and equipment. We create precise, quality images that doctors throughout BIDMC use to diagnose health conditions and monitor your treatment.
Our faculty and staff are highly trained and dedicated to giving you the best possible care. Our radiologists (doctors who specialize in reviewing imaging tests) ensure our scanning techniques stay on the cutting edge in the medical community.
ACR-Accredited CT Facility
We hold accreditation from the American College of Radiology (ACR). With this, you can be confident that we are committed to upholding the highest levels of quality and patient care.
Understanding Computed Tomography (CT)
CT is a diagnostic tool that combines X-ray with state-of-the-art computer technology. CT images are cross-sectional images of the body. These images show these parts of the inside of your body in great detail:
- Blood vessels
- Bones
- Organs
- Tissue
Body Areas for CT Scan
Our radiologists offer CT scan for various areas of the body:
- Chest, torso and abdomen to examine the organs (such as the heart and lungs), certain blood vessels or bones
- Head and neck to examine the brain, head and neck blood vessels
More About CT Scan
Our radiologists provide these testing and reporting services to support our colleagues throughout BIDMC:
- Cardiovascular imaging
- Cardiac CT
- CT angiography for arteries and veins
- CT colonography (virtual colonoscopy)
- CT-guided radiofrequency ablation
- CT-guided biopsy or drainage
- Neurologic imaging
- Brain and spine CT exams
- Ear, nose and throat (ENT) and ophthalmologic-related CT imaging
- Head and neck CT angiography
- Nuclear imaging for cancer diagnosis
- Cardiac CT and positron emission tomography (PET) scan
- Cardiac perfusion
- Low-dose CT lung cancer screening test
- Orthopedic imaging
- Bone, joint, muscle and soft tissue CT diagnosis
- CT-guided bone biopsy
- CT-guided sacroiliac (SI) joint injections
Arrive 60 to 90 minutes before your scan, or as advised by your testing team. This allows you and our team time to prepare for the CT scan.
For your exam, you may receive intravenous (IV) contrast, or dye. IV contrast is an iodine-based solution that a member of your testing team injects into your veins. The contrast appears very bright (white) on a CT image. This contrast allows for a better, brighter CT image. Your kidneys will filter IV contrast from your blood. Your body will pass the contrast, unnoticed, in your urine.
It is important that you inform the technologist before your exam if you meet any of these conditions:
- Are allergic to any foods or medications
- Are diabetic and taking Glucophage (metformin)
- Have asthma
- Have had IV contrast before
- May be pregnant or are breastfeeding
Please review the specific CT scan preparation instructions below for your specific type of scan.
Preparing for a Cardiac, Chest or Head CT
Don’t eat solid foods for at least three hours before your test. During this time, you may drink clear liquids and take your usual medications.
Preparing for a Torso CT
Don’t eat solid foods for at least one hour before your test. During this time, you may drink clear liquids and take your usual medications.
When you arrive at the hospital, the testing team will ask you to drink 900 to 1400 ml (four to six cups) of barium sulfate. This barium drink enhances the quality of your CT scan by making structures in your body easier to distinguish.
You will lie on an X-ray table once you enter the CT room. Depending on the area of your body on which you’re receiving the scan, you may need to lie on your back or on your stomach. The table will move in and out of the CT scanner (a large donut-shaped machine that is open on both ends). The machine captures images of your body.
You will need to lie very still during the scan. The testing team may ask you to follow some specific breathing instructions. It is very important that you follow their instructions to the best of your ability.
Procedures using CT are quick. Depending on the type of CT you’re having, the test will take 10–30 minutes.
What To Expect During a Cardiac or Chest CT
Your testing team will ask you to remove all clothing from the waist up and wear a hospital gown.
What To Expect During a Torso CT
Your testing team will ask you to remove all clothing and wear a hospital gown.
You may resume your normal daily routine after your exam. If you received IV contrast for your exam, be sure to increase your fluid intake to help clear the material from your system.
After your exam, one of our radiologists will review your CT images. The radiologist will then review the results of your CT scan with your doctor. Your doctor will explain them to you. Your doctor should have access to your exam results within 24 hours.
Advancing Care, Research & Education
Department of Radiology
Our radiology specialists provide a full spectrum of clinical programs and services using the latest imaging technology and techniques.
Radiology Research
Our Radiology Program promotes academic programs and clinical excellence worldwide through research.
Radiology Education & Training
BIDMC offers graduates and physicians education and training opportunities in radiology.
