Multimedia Gallery
Cardiac CT scan overview
Cardiac CT is a noninvasive diagnostic imaging technique that employs x-rays to obtain images of the heart.
During a cardiac CT scan, an x-ray source and opposing detector move continuously around the patient in a circular path while the patient table moves slowly through the scanner allowing imaging on many different planes. The x-rays passing through the patient’s tissues are captured by a receiver on the opposite side of the body and sent to a computer that reconstructs an image of the heart, viewable from different perspectives.
Each unit on the reconstructed image appears as a shade of gray depending on the transmission of x-rays through that part of the body – a property known as attenuation, which is measured in Hounsfield (H) units. Bone, calcium, and metal, for example, have a high attenuation and appear as white. Water and fat have intermediate attenuation and appear as gray, and air has a low attenuation and appears as black.
In some cases, an attenuating iodine-based contrast agent may be administered intravenously to highlight the blood vessels and inspect them for abnormalities, a technique commonly referred to as cardiac CT angiography (CTA). Scanning is relatively rapid and cardiac CT allows for a visual evaluation of the entire heart in less than 30 seconds.
Cardiac CT scan overview
Review Date: 7/3/2013
Reviewed By:
Animations
- Abdominal aortic aneurysm
- Abdominal pain
- Aneurysm description
- Arrhythmias
- Atherosclerosis
- Atrial fibrillation
- Balloon angioplasty - short...
- Blood clotting
- Blood flow
- Blood pressure
- Brain components
- Cardiac and vascular disord...
- Cardiac arrhythmia - conduc...
- Cardiac arrhythmia symptoms
- Cardiac arrhythmia tests: E...
- Cardiac arrhythmia: Additio...
- Cardiac arrhythmia: Heart p...
- Cardiac arrhythmia: Physica...
- Cardiac arrhythmia: Taking ...
- Cardiac catheterization
- Cardiac catheterization - a...
- Cardiac conduction system
- Cardiac CT scan overview
- Cardiomyopathy
- Cardiovascular system
- Causes and side effects of ...
- Cerebral aneurysm
- Chest pain
- Childhood obesity
- Cholesterol and triglycerid...
- Coronary artery bypass graf...
- Coronary artery disease
- Coronary artery disease (CA...
- Directional coronary athere...
- Electrocardiogram
- Epinephrine and exercise
- Erection problems
- Essential hypertension
- Exercise
- Hardening of arteries
- Healthy Guide to Fast Food
- Heart attack
- Heart bypass surgery
- Heart failure
- Heart formation
- Heartbeat
- How to use a pill cutter
- Hypertension
- Hypertension - overview
- Muscle types
- NICU consultants and suppor...
- Nuclear stress test
- Obstructive sleep apnea
- Percutaneous transluminal c...
- Preeclampsia
- Smoking
- Smoking tips to quit
- Snoring
- Stent
- Stroke
- Stroke
- Stroke - secondary to cardi...
- Tachycardia
- Tobacco use - effects on ar...
- Tracking your blood pressur...
- Type 2 diabetes
- Understanding cholesterol r...
- Vacation health care
- Valvular heart disease (VHD...
- Varicose veins
- Varicose veins overview
- Venous insufficiency
- What makes your heart beat?
Illustrations
- 15/15 rule
- Absent pulmonary valve
- Acute MI
- Adjustable gastric banding
- Aerobic exercise
- Alcoholic cardiomyopathy
- Alpha-glucosidase inhibitors
- Angina
- Anomalous left coronary artery
- Anterior heart arteries
- Aortic aneurysm
- Aortic dissection
- Aortic rupture - chest x-ray
- Aortic stenosis
- Aortopulmonary window
- Arterial embolism
- Arterial plaque build-up
- Arterial tear in internal c...
- Arteries of the brain
- Artery cut section
- Atherosclerosis
- Atherosclerosis of internal...
- Atherosclerosis of the extr...
- Atrial septal defect
- Atrioventricular block - EC...
- Atrioventricular canal (end...
- Auscultation
- Bacterial pericarditis
- Balance receptors
- Bicuspid aortic valve
- Biguanides
- Biliopancreatic diversion (BPD)
- Biliopancreatic diversion w...
- Biopsy catheter
- Blood pressure
- Blood pressure check
- Blood test
- Bradycardia
- Brain
- Brainstem function
- Breathing
- Bronchial cancer - CT scan
- Calcium benefit
- Calcium source
- Calories and fat per serving
- Cardiac arteriogram
- Cardiac catheterization
- Cardiac catheterization
- Carotid dissection
- Carotid duplex
- Carotid stenosis - X-ray of...
- Carotid stenosis - X-ray of...
- Cataract
- Cataract - close-up of the eye
- Central nervous system and ...
- Cerebellum - function
- Cerebral aneurysm
- Cholesterol
- Cholesterol producers
- Circle of Willis
- Circulation of blood throug...
- Circulatory system
- Clubbing
- Coarctation of the aorta
- Conduction system of the heart
- Constrictive pericarditis
- Coronary angiography
- Coronary artery blockage
- Coronary artery disease
- Coronary artery disease
- Coronary artery fistula
- Coronary artery spasm
- Coronary artery stent
- Crossed eyes
- CT scan
- Culture-negative endocarditis
- Cyanosis of the nail bed
- Cyanotic heart disease
- DASH diet
- Deep veins
- Deep veins
- Deep venous thrombosis - il...
- Developmental process of at...
- Dextrocardia
- Diabetes and exercise
- Diabetic emergency supplies
- Digestive system
- Dilated cardiomyopathy
- Double aortic arch
- Double inlet left ventricle
- Double outlet right ventricle
- Drug induced hypertension
- Duplex/doppler ultrasound test
- Ear anatomy
- Ebstein's anomaly
- ECG
- ECMO
- Effects of age on blood pressure
- Eisenmenger syndrome (or co...
- Electrocardiogram (ECG)
- Emphysema
- Endarterectomy
- Endocrine glands
- Enlarged view of atherosclerosis
- Exercise - a powerful tool
- Exercise 30 minutes a day
- Exercise can lower blood pr...
- Exercise with friends
- Eye
- Facial drooping
- Fast food
- Fish in diet
- Food and insulin release
- Food label guide for candy
- Food label guide for whole ...
- Foot swelling
- Fruits and vegetables
- Glucose in blood
- Glucose test
- Healthy diet
- Healthy diet
- Heart - front view
- Heart - section through the...
- Heart attack symptoms
- Heart beat
- Heart chambers
- Heart valves
- Heart valves - anterior view
- Heart valves - superior view
- High blood pressure tests
- Holter heart monitor
- Hypertension
- Hypertensive kidney
- Hypertrophic cardiomyopathy
- Infective endocarditis
- Insulin pump
- Insulin pump
- Intracerebellar hemorrhage ...
- Intracerebral hemorrhage
- Janeway lesion on the finger
- Jaw pain and heart attacks
- Left atrial myxoma
- Left cerebral hemisphere - ...
- Left heart catheterization
- Leg pain (Osgood-Schlatter)
- Lifestyle changes
- Lobes of the brain
- Low blood sugar symptoms
- Low nasal bridge
- Lower leg edema
- Lower leg muscles
- Lung mass, right lung - CT scan
- Lung mass, right upper lobe...
- Lung nodule, right lower lu...
- Lung with squamous cell can...
- Lungs
- Lymph tissue in the head an...
- Male reproductive anatomy
- Mitral stenosis
- Mitral valve prolapse
- Monitoring blood pressure
- MRI scans
- MUGA test
- Muscular atrophy
- myPlate
- Neck pain
- Neck pulse
- Normal anatomy of the heart
- Normal heart anatomy (cut s...
- Normal heart rhythm
- Normal lung anatomy
- Omega-3 fatty acids
- Otoscope examination
- Pacemaker
- Pericarditis
- Pericardium
- Pericardium
- Peripartum cardiomyopathy
- Pharmacy options
- Pitting edema on the leg
- Plaque buildup in arteries
- Post myocardial infarction ...
- Posterior heart arteries
- Post-MI pericarditis
- Prevention of heart disease
- Progressive build-up of pla...
- Ptosis - drooping of the eyelid
- Pulmonary nodule, solitary ...
- Quitting smoking
- Radial pulse
- Read food labels
- Respiratory cilia
- Respiratory system
- Retrocalcaneal bursitis
- Right atrial myxoma
- Right cerebral hemisphere -...
- Roux-en-Y stomach surgery f...
- Saturated fats
- Secondhand smoke and lung cancer
- Shin splints
- Slit-lamp exam
- Smoking hazards
- Smoking hazards
- Sodium content
- Sources of fiber
- Stable angina
- Starchy foods
- Striae in the popliteal fossa
- Stroke
- Sulfonylureas drug
- Superficial thrombophlebitis
- Superficial thrombophlebitis
- Swan Ganz catheterization
- Taking your carotid pulse
- Thiazolidinediones
- Thoracic organs
- Thromboangiitis obliterans
- Thrombus
- Thyroid cancer - CT scan
- Tobacco and cancer
- Tobacco and chemicals
- Tobacco and vascular disease
- Tobacco health risks
- Totally anomalous pulmonary...
- Totally anomalous pulmonary...
- Totally anomalous pulmonary...
- Trans fatty acids
- Transient Ischemic attack (TIA)
- Tricuspid Regurgitation
- Tricuspid Regurgitation
- Type I diabetes
- Ultrasound, normal fetus - ...
- Ultrasound, ventricular sep...
- Untreated hypertension
- Varicose veins
- Vascular ring
- Venous blood clot
- Ventricular septal defect
- Ventricular tachycardia
- Vertebra, thoracic (mid back)
- Vertical banded gastroplasty
- Vertigo
- Visual acuity test
- Visual field test
- Vitamin B1 benefit
- Vitamin B1 source
- Vitamin C benefit
- Vitamin C deficit
- Vitamin C source
- Vitamin E and heart disease
- Warming up and cooling down
- Wine and health