Doctors use angiography to diagnose and treat blood vessel diseases and conditions. Angiography exams produce pictures of major blood vessels throughout the body. In some cases, contrast material is used.
Doctors perform angiography using:
x-rays with catheters
computed tomography (CT)
magnetic resonance imaging (MRI)
CT angiography uses a CT scanner to produce detailed images of both blood vessels and tissues in various parts of the body. During the exam, contrast material is injected through a small cannula placed in a vein of the arm. A radiologic technologist will capture high-resolution CT images while the contrast material flows through the blood vessels.
You should wear comfortable, loose-fitting clothing to your exam. You may need to wear a gown during the procedure.
Metal objects, including jewellery, eyeglasses, dentures and hairpins, may affect the CT images. Leave them at home or remove them prior to your exam. You may also be asked to remove hearing aids and removable dental work.
Women will be asked to remove bras containing metal underwire. You may be asked to remove any piercings, if possible.
You will be asked not to eat or drink anything for a few hours beforehand, if contrast material will be used in your exam. You should inform your physician of all medications you are taking and if you have any allergies.
If you have a known allergy to contrast material, your doctor may prescribe medications (usually a steroid) to reduce the risk of an allergic reaction. To avoid unnecessary delays, contact your doctor before the exact time of your exam.
Also inform your doctor of any recent illnesses or other medical conditions and whether you have a history of heart disease, asthma, diabetes, kidney disease or thyroid problems. Any of these conditions may increase the risk of an adverse effect.
There are many similarities between conventional x-ray imaging and CT scanning. During conventional x-ray imaging, a single x-ray beam source sends x-rays through the body. A detector plate captures the x-rays that come out of the body.
Based on the amount of x-rays blocked by the body organs, the image will appear in different shades of grey. For example, bones appear white on the x-ray while air is relatively black.
For CT scans, multiple x-ray beam sources and sets of x-ray detectors spin around the body at high speed. The x-ray beam sources send multiple small high-energy x-ray beams through the body.
The detectors capture those x-rays that come out of the body. During the examination, you will lie on a table that moves through the CT scanner so that the x-ray beams can examine different areas of the body.
Then, a fast computer will take the information gathered from the scanner to produce images of the body. The computer processes a large volume of CT scan data to create two or three-dimensional images of the body.
A CT angiography produces detailed images of both blood vessels and tissues in various parts of the body. Contrast material is injected in a vein of the arm to allow your doctor to capture high-resolution CT images while the contrast material flows through the blood vessels.
Risks of CT angiography: – Radiation exposure risk. However, the amount of radiation used during is considered minimal so the benefits generally outweigh the risks. -Allergic reactions or Irritations to the contrast material injected.
A CT scan and a CT angiogram are basically the same procedure. CT stands for computerized tomography and is one of the angiography techniques currently used, along with traditional x-rays with catheters, and MRI.
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Frequently Asked Questions
None - Questions not provided for analysis?
The absence of specific questions means that general information about CT angiography services at Life Medical Imaging Central Coast can be provided. This includes details on the procedure, preparation, and associated risks.
What is CT angiography used for?
CT angiography is used to visualise blood vessels and tissues, aiding in the diagnosis of conditions such as blockages, aneurysms, and vascular diseases. This non-invasive procedure provides detailed images that assist healthcare providers in making informed treatment decisions.
How is a CT scan performed?
A CT scan is performed by having the patient lie on a motorised table that slides into the CT scanner. X-ray beams rotate around the body, capturing detailed cross-sectional images of internal structures, which are then processed by a computer.
What preparation is needed for a CT scan?
Preparation for a CT scan involves fasting for a few hours beforehand, avoiding certain medications, and possibly drinking a contrast solution to enhance image quality. Always follow specific instructions given by your healthcare provider.
Are there risks associated with CT scans?
The risks associated with CT scans include exposure to ionising radiation, which may slightly increase the risk of cancer over a lifetime. Additionally, allergic reactions to contrast material can occur, though they are rare.
How does contrast material enhance CT images?
Contrast material enhances CT images by increasing the visibility of blood vessels and tissues. It absorbs X-rays more effectively than surrounding tissues, allowing for clearer and more detailed images, which aids in accurate diagnosis.
What are the benefits of low-dose CT technology?
The benefits of low-dose CT technology include reduced radiation exposure for patients while still providing high-quality imaging. This advancement enhances safety without compromising the diagnostic accuracy essential for effective medical evaluations.
How long does a CT scan take?
The duration of a CT scan typically ranges from 10 to 30 minutes, depending on the specific type of scan and the area being examined.
Can I eat before a CT scan?
Eating before a CT scan depends on the type of scan being performed. Generally, for most CT scans, you can eat normally; however, if a contrast material is used, you may be advised to fast for a few hours beforehand. Always follow your doctor's specific instructions.
What should I wear for a CT scan?
What to wear for a CT scan is important to consider. It is recommended to wear comfortable, loose-fitting clothing without any metal fastenings, such as zippers or buttons, as these can interfere with the imaging process.
How often can I have a CT scan?
The frequency of CT scans depends on individual medical needs and the doctor's recommendations. Generally, it's essential to balance the necessity of imaging with the potential risks of radiation exposure. Always consult your healthcare provider for personalised advice.
What happens during a CT angiography procedure?
During a CT angiography procedure, detailed images of blood vessels are captured using a CT scanner after a contrast material is injected. This allows for precise visualization of vascular structures for diagnostic assessment.
How are results from a CT scan interpreted?
The interpretation of results from a CT scan involves radiologists analysing the images to identify any abnormalities or conditions. They assess the size, shape, and density of structures, providing detailed reports to guide further diagnosis and treatment.
What conditions can a CT scan diagnose?
CT scans can diagnose a variety of conditions, including cancers, internal injuries, infections, and vascular diseases, by providing detailed images of organs, tissues, and blood vessels for accurate assessment and treatment planning.
Is a CT scan painful?
A CT scan is generally not painful. Most patients experience only mild discomfort from lying still on the scanning table and, if contrast material is used, a brief sensation of warmth.
How do I request a CT scan appointment?
Requesting a CT scan appointment is straightforward. You can easily schedule one online through our website by filling out the appointment request form, or you may call our office directly to speak with a representative who will assist you.
What should I do if I’m claustrophobic during a scan?
If you’re claustrophobic during a scan, it’s important to communicate your feelings to the technician. They can provide support, offer relaxation techniques, or adjust the procedure to make you more comfortable.
Are there alternatives to CT angiography?
Alternatives to CT angiography include MRI angiography, which uses magnetic fields and radio waves, and traditional angiography, which involves catheter insertion. Each method has its own benefits and may be preferred based on specific patient needs and conditions.
How does CT angiography differ from traditional angiography?
CT angiography differs from traditional angiography in that it uses advanced CT imaging technology to create detailed cross-sectional images of blood vessels, while traditional angiography relies on fluoroscopy and contrast dye injected directly into the blood vessels for real-time imaging.
What is the recovery time after a CT scan?
The recovery time after a CT scan is typically minimal. Most patients can resume their normal activities immediately, as the procedure is non-invasive and does not usually require any downtime.
Can I drive after a CT scan?
Driving after a CT scan is generally safe. However, if you received sedation or contrast material, it's advisable to wait until the effects have worn off before driving. Always follow your doctor's specific instructions.
How is a CT scan different from an MRI?
The difference between a CT scan and an MRI lies in their imaging techniques: a CT scan uses X-rays to create detailed cross-sectional images, while an MRI employs powerful magnets and radio waves to generate high-resolution images of soft tissues.
What are the side effects of contrast material?
The side effects of contrast material can include mild reactions such as nausea, a warm sensation, or a metallic taste. In rare cases, more serious allergic reactions may occur, requiring immediate medical attention.
How does a CT scan help in emergency situations?
A CT scan is crucial in emergency situations as it provides rapid and detailed imaging to assess injuries or conditions, such as internal bleeding or fractures, enabling swift diagnosis and timely treatment decisions.
What technology is used in CT scans?
The technology used in CT scans involves advanced X-ray imaging combined with computer processing. This allows for the creation of detailed cross-sectional images of the body, enhancing diagnostic accuracy and enabling the visualization of internal structures.
How frequently should I have imaging tests?
The frequency of imaging tests should be determined by your healthcare provider based on your individual health needs, medical history, and any ongoing conditions. Regular assessments may be necessary, but unnecessary imaging should be avoided.
What information do I need to provide before a CT scan?
Before a CT scan, you need to provide relevant medical history, including any allergies, current medications, and previous imaging studies. This information helps ensure a safe and effective procedure tailored to your needs.
How can I prepare my child for a CT scan?
Preparing your child for a CT scan involves explaining the procedure in simple terms, ensuring they understand it won’t hurt, and discussing any necessary fasting or medication instructions. Comfort items, like a favourite toy, can also help ease their anxiety.
What is the role of a radiologist in CT imaging?
The role of a radiologist in CT imaging is to interpret the detailed images produced by the CT scans, diagnose medical conditions, and provide crucial insights to guide treatment plans for patients.
How do I access my CT scan results?
Accessing your CT scan results is straightforward. You can view them through our secure online portal, or you may contact our office directly for assistance in obtaining your results.
lung cancer screening, lung cancer, cancer screening, online, patient, cancer, hospital, procedure, appointment online, book an appointment, perfusion, ultrasound, medical imaging, radiology, mammography, health care, nuclear medicine, clinic, radiography, bulk billing, injection, tomography, radiation, medication, medical, images, technology, blood, aorta, disease, artery, heart, coronary artery disease, coronary arteries, heart rate, risk, exam, diabetes, hypertension, transient ischemic attack, ionizing radiation, cardiovascular disease, blood pressure, stent, arteriovenous malformation, brain, kidney disease, radiation therapy, iodinated contrast, vessels, positron emission tomography, carotid artery stenosis, injury, adverse effect, breathing, radiological society of north america, hypercholesterolemia, brain tumor, beta blocker
Frequently Asked Questions
None - Questions not provided for analysis?
The absence of specific questions means that general information about CT angiography services at Life Medical Imaging Central Coast can be provided. This includes details on the procedure, preparation, and associated risks.
What is CT angiography used for?
CT angiography is used to visualise blood vessels and tissues, aiding in the diagnosis of conditions such as blockages, aneurysms, and vascular diseases. This non-invasive procedure provides detailed images that assist healthcare providers in making informed treatment decisions.
How is a CT scan performed?
A CT scan is performed by having the patient lie on a motorised table that slides into the CT scanner. X-ray beams rotate around the body, capturing detailed cross-sectional images of internal structures, which are then processed by a computer.
What preparation is needed for a CT scan?
Preparation for a CT scan involves fasting for a few hours beforehand, avoiding certain medications, and possibly drinking a contrast solution to enhance image quality. Always follow specific instructions given by your healthcare provider.
Are there risks associated with CT scans?
The risks associated with CT scans include exposure to ionising radiation, which may slightly increase the risk of cancer over a lifetime. Additionally, allergic reactions to contrast material can occur, though they are rare.
How does contrast material enhance CT images?
Contrast material enhances CT images by increasing the visibility of blood vessels and tissues. It absorbs X-rays more effectively than surrounding tissues, allowing for clearer and more detailed images, which aids in accurate diagnosis.
What are the benefits of low-dose CT technology?
The benefits of low-dose CT technology include reduced radiation exposure for patients while still providing high-quality imaging. This advancement enhances safety without compromising the diagnostic accuracy essential for effective medical evaluations.
How long does a CT scan take?
The duration of a CT scan typically ranges from 10 to 30 minutes, depending on the specific type of scan and the area being examined.
Can I eat before a CT scan?
Eating before a CT scan depends on the type of scan being performed. Generally, for most CT scans, you can eat normally; however, if a contrast material is used, you may be advised to fast for a few hours beforehand. Always follow your doctor's specific instructions.
What should I wear for a CT scan?
What to wear for a CT scan is important to consider. It is recommended to wear comfortable, loose-fitting clothing without any metal fastenings, such as zippers or buttons, as these can interfere with the imaging process.
How often can I have a CT scan?
The frequency of CT scans depends on individual medical needs and the doctor's recommendations. Generally, it's essential to balance the necessity of imaging with the potential risks of radiation exposure. Always consult your healthcare provider for personalised advice.
What happens during a CT angiography procedure?
During a CT angiography procedure, detailed images of blood vessels are captured using a CT scanner after a contrast material is injected. This allows for precise visualization of vascular structures for diagnostic assessment.
How are results from a CT scan interpreted?
The interpretation of results from a CT scan involves radiologists analysing the images to identify any abnormalities or conditions. They assess the size, shape, and density of structures, providing detailed reports to guide further diagnosis and treatment.
What conditions can a CT scan diagnose?
CT scans can diagnose a variety of conditions, including cancers, internal injuries, infections, and vascular diseases, by providing detailed images of organs, tissues, and blood vessels for accurate assessment and treatment planning.
Is a CT scan painful?
A CT scan is generally not painful. Most patients experience only mild discomfort from lying still on the scanning table and, if contrast material is used, a brief sensation of warmth.
How do I request a CT scan appointment?
Requesting a CT scan appointment is straightforward. You can easily schedule one online through our website by filling out the appointment request form, or you may call our office directly to speak with a representative who will assist you.
What should I do if I’m claustrophobic during a scan?
If you’re claustrophobic during a scan, it’s important to communicate your feelings to the technician. They can provide support, offer relaxation techniques, or adjust the procedure to make you more comfortable.
Are there alternatives to CT angiography?
Alternatives to CT angiography include MRI angiography, which uses magnetic fields and radio waves, and traditional angiography, which involves catheter insertion. Each method has its own benefits and may be preferred based on specific patient needs and conditions.
How does CT angiography differ from traditional angiography?
CT angiography differs from traditional angiography in that it uses advanced CT imaging technology to create detailed cross-sectional images of blood vessels, while traditional angiography relies on fluoroscopy and contrast dye injected directly into the blood vessels for real-time imaging.
What is the recovery time after a CT scan?
The recovery time after a CT scan is typically minimal. Most patients can resume their normal activities immediately, as the procedure is non-invasive and does not usually require any downtime.
Can I drive after a CT scan?
Driving after a CT scan is generally safe. However, if you received sedation or contrast material, it's advisable to wait until the effects have worn off before driving. Always follow your doctor's specific instructions.
How is a CT scan different from an MRI?
The difference between a CT scan and an MRI lies in their imaging techniques: a CT scan uses X-rays to create detailed cross-sectional images, while an MRI employs powerful magnets and radio waves to generate high-resolution images of soft tissues.
What are the side effects of contrast material?
The side effects of contrast material can include mild reactions such as nausea, a warm sensation, or a metallic taste. In rare cases, more serious allergic reactions may occur, requiring immediate medical attention.
How does a CT scan help in emergency situations?
A CT scan is crucial in emergency situations as it provides rapid and detailed imaging to assess injuries or conditions, such as internal bleeding or fractures, enabling swift diagnosis and timely treatment decisions.
What technology is used in CT scans?
The technology used in CT scans involves advanced X-ray imaging combined with computer processing. This allows for the creation of detailed cross-sectional images of the body, enhancing diagnostic accuracy and enabling the visualization of internal structures.
How frequently should I have imaging tests?
The frequency of imaging tests should be determined by your healthcare provider based on your individual health needs, medical history, and any ongoing conditions. Regular assessments may be necessary, but unnecessary imaging should be avoided.
What information do I need to provide before a CT scan?
Before a CT scan, you need to provide relevant medical history, including any allergies, current medications, and previous imaging studies. This information helps ensure a safe and effective procedure tailored to your needs.
How can I prepare my child for a CT scan?
Preparing your child for a CT scan involves explaining the procedure in simple terms, ensuring they understand it won’t hurt, and discussing any necessary fasting or medication instructions. Comfort items, like a favourite toy, can also help ease their anxiety.
What is the role of a radiologist in CT imaging?
The role of a radiologist in CT imaging is to interpret the detailed images produced by the CT scans, diagnose medical conditions, and provide crucial insights to guide treatment plans for patients.
How do I access my CT scan results?
Accessing your CT scan results is straightforward. You can view them through our secure online portal, or you may contact our office directly for assistance in obtaining your results.
