成像测试

Accurate imaging is very important to the diagnosis 和 treatment of all aortic disease. 在过去的二十年里, imaging technology has evolved 和 exp和ed to help physicians detect even the smallest changes in the aorta.

The UCLA Aortic Center: Advanced Imaging for Aortic Disease

Quick 和 accurate aortic imaging is important to successful treatment of aortic disease especially in critical cases where every second counts. Advanced imaging technologies available at the UCLA Aortic Center provide an in-depth view into the anatomy of the aorta, detecting even small changes in blood flow that would otherwise go unnoticed. Cardiologists with expertise in non-invasive cardiac imaging offer same-day imaging studies 和 consultations for our patients to help with pre-operative evaluation 和 treatment.

In many cases, imaging technology is also used to help surgeons during aortic operations. UCLA’s operating rooms are outfitted with the latest imaging equipment for the use of our cardiac 和 vascular surgeons during 血管内修复, 开窗血管内修复 和 混合修复 主动脉瘤.

Types of 成像测试 at the UCLA Aortic Center

UCLA offers a complete range of diagnostic imaging techniques, including:

• CT
• 核磁共振成像
• 血管内超声
• 双超声
• 血管造影术
• Nuclear perfusion imaging (SPECT, PET/CT)

计算机断层扫描(CT)

CT 血管造影术 is a non-invasive medical test that provides fast, reliable imaging of the aorta 和 its branch vessels. UCLA is home to the most advanced CT equipment on the market including 双能量CT血管造影 和 低剂量冠状动脉CT血管造影, which provide faster, more detailed images of the aorta with less radiation. CT combined with intravenous contrast dye can provide high-resolution images of the arterial system, which allows extremely accurate evaluation of blockages in the aorta 和 helps guide treatment decisions. This test is also extremely sensitive for detecting the location 和 severity of aortic injuries.

磁共振成像(核磁共振成像)

核磁共振成像 imaging is a non-invasive medical test that allows the tissue 和 blood vessels of the body to be imaged without the need for radiation or dye tracing. Dynamic 核磁共振成像 is a powerful tool 和 new techniques allow evaluation of flow dynamics (circulation) in the aorta 和 branch vessels that can help doctors with treatment decisions.

血管内超声

Intravascular ultrasound (IVUS) is a minimally invasive technique that uses the ability of ultrasound to provide real-time images of the artery 和 its branch vessels, so that doctors can make immediate treatment decisions. Physicians insert an ultrasound device affixed to a catheter through the femoral artery 和 into the aorta allowing them to view the wall of the aortic vessel from the inside out. The test provides high definition images 主动脉瘤, ulcers 和 dissections. IVUS can also help guide the exact placement of intravascular stents or endografts.

双超声

Combining traditional ultrasound with Doppler ultrasound, duplex ultrasound is a non-invasive test that uses an ultrasound w和 to track the flow of blood within the aorta. This test can accurately diagnosis blockages 和/or aneurysms 和 dissections within the aorta without the use of radiation or invasive procedures.

血管造影术

血管造影术 remains important in the assessment of the aorta, particularly when endovascular intervention is a possibility. This minimally invasive test provides surgeons with an excellent roadmap for deciding how 和 where to repair the aorta. 在这个测试中, your doctor inserts a small tube-like catheter into the groin 和 into the aorta through the femoral artery. Contrast dye is injected into the catheter 和 x-ray technology (fluoroscopy) tracks the flow of the dye as it moves through the arterial system. The ability to selectively look at small branch vessels helps surgeons target the source 和 stop bleeding in cases of trauma.

核灌注成像

Also known as myocardial perfusion imaging, nuclear perfusion imaging provides better accuracy than traditional electrocardiogram (EKG) testing. The minimally invasive technique produces images of your heart when it is under stress 和 at rest. Your doctor may perform this test using SPECT (single proton emission computed tomography) or PET (positron emission tomography). First, a radioactive tracer is injected into your blood steam. Next, you will exercise on a treadmill to put stress on your heart. By using SPECT or PET imaging technology to track how the tracer travels through your heart on the treadmill 和 at rest, doctors can determine whether the blood flow to the heart is normal.