ARTERIAL COLOUR DOPPLER
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Certified Labs
NABH Accredited
60 mins collection
Not specified
Reports in
6hrs
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About The Test
Arterial Colour Doppler Overview:
Arterial Colour Doppler (ACD) is a test that does not require any invasive procedure and part of radiology, which uses sound waves of high frequency alongside Doppler to check blood circulation in the arteries, giving insights on the condition of the vascular system. It is quite helpful for diagnosing and tracking problems with the vessels, like stenosis, arteriosclerosis, and aneurysms.
What is Arterial Colour Doppler?
ACD is a clinical test with the ultrasound modality that incorporates a Doppler and can record changes in blood flow movement and volume. This test utilizes the ultrasound doppler effect where the frequency of sound changes when it strikes a moving target, like red blood cells. The results are demonstrated in real-time display movies where colours represent the direction and speed of blood flow.
Types of Arterial Colour Doppler:
Different kinds of ACD include:
- Carotid Doppler: Used to determine the blood flow in carotid arteries and diagnose carotid artery disease.
- Peripheral artery Doppler: Used to monitor blood flow in peripheral arteries to find PAD.
- Renal Doppler: Diagnoses renovascular disease through the analysis of blood flow in the renal arteries.
List of Parameters
List of parameters taken into consideration during the Arterial Colour Doppler
For an ACD examination, the practitioners pay attention to the following parameters:
- Direction and velocity of the blood flow.
- The dimension and anatomy of arteries.
- The development of stenosis or occlusion.
- The existence of aneurysm or pseudoaneurysm.
- Development of collateral circulation and revascularization.
Why This Test
Reasons of conducting an Arterial Colour Doppler
The test is usually done with these conditions or signs:
- Disease of the peripheral arteries.
- Carotid artery disease.
- Renovascular disease.
- Pseudoaneurysm or aneurysm.
- Stenosis or occlusion of arteries.
- Some vascular form anomalies.
- Vascular Raynaud’s disease.
When and Who Needs to Take an Arterial Colour Doppler?
An ACD is recommended if you:
- Show any symptoms of Peripheral artery disease (PAD) like numbness in your legs.
- Have any relatives who suffered from vascular diseases.
- Are or used to be a smoker.
- Suffer from hypertension or high cholesterol.
- Have had any previous vascular surgeries.
- Have symptoms related to carotid artery disease such as feeling faint or weakness.
Benefits
Some of the reasons of an ACD test are listed as:
- It is painless and non-invasive.
- Serves as an important indicator of blood vessel health.
- Helps in detecting and tracking several vascular diseases.
- Aids in treating and controlling specific cases.
- Helps decreasing complications and improving the outcome for the patients.
Illnesses diagnosed with Arterial Colour Doppler.
ACD is used to diagnose and monitor a range of vascular conditions, including:
Peripheral artery disease
- Carotid artery disease
- Renovascular disease
- Arterial aneurysm
- Arterial stenosis
- Vascular malignancies
- Raynaud's phenomenon
Preparing for test
Preparing for Arterial Colour Doppler
Patients must follow some specific instructions for ACD.
- Do not put on restrictive clothes or jewellery.
- Refrain from smoking for at least two hours prior to the test.
- Keep off caffeine and avoid heavy meals at least one hour prior to the test.
- Let the technician know if you are taking any medications, if you have any allergies, or if you have any medical conditions.
Pre-Requisites:
Unless an ACD is done during a medical emergency, there are no specific requirements, but patients should:
- Be a minimum age of 18 years (or at the age specified by the doctor).
- Allow the healthcare to obtain informed consent.
- Assist the technician during the procedure.
Best Time to Take the Arterial Colour Doppler
While it can be done at any time, an ACD exam should be scheduled for a time when the patient is relatively stress-free, or calm, and at ease.
Eligibility:
Most patients qualify for an ACD test, but it is contraindicated in:
- Patients with severe skin disease or active infections.
- People with allergies to ultrasonic gel.
- Traumatic injury and surgeries to the specific body part.
Procedure for Taking an Arterial Colour Doppler
Usually, the ACD test consists of the following steps:
- Getting the patient ready for the procedure and positioning them on the examination table.
- Attaching and securing the transducer to the skin's surface.
- Applying the ultrasonic gel to the site of interest.
- Selecting appropriate settings on the ultrasound machine and turning on the Doppler device to analyse the perfusion.
- Collecting the images and relevant details.
- Evaluating and determining results.
Cautions before the test
Before the ACD test, the patient must tell the technician regarding:
- Medications being taken or allergic reactions.
- Surgical history or any form of trauma in interest.
- Current or expected pregnancy state.
Test Results
Condition/Findings | Description | Interpretation |
---|---|---|
Normal blood flow | Colour-coded images showing normal blood flow patterns | No stenosis or occlusion |
Stenosis | Colour-coded images showing decreased blood flow patterns | Narrowing of the artery diameter |
Occlusion | Colour-coded images showing absent blood flow patterns | Complete blockage of the artery |
Aneurysm | Colour-coded images showing abnormal blood flow patterns | Ballooning of the artery diameter |
FAQs
ACD test as painful as some say it might be?
Not at all, it's not invasive and as the test suggests it's painless.
How long does the test take?
Depending on the thoroughness of the exam, the test will take between 30 and 60 minutes.
What do I need to prepare for while the test is being carried out?
You will lie down comfortably for the testing, and the technician will put some ultrasound jelly around the area that needs to be examined. The technician will use the ultrasound transducer to take images and videos from the skin.
What are the risks of the test?
No considerable risks are included with the ACD test; however, a few patients might face some skin irritation or allergic reactions by the ultrasound gel.
How accurate is the test?
Although it's diagnosed vascular problems with great precision, like any other tests, it's not perfect. In certain instances, other tests or confirmation may be required.