Angiography Types Categories Signs and Symptoms Treatment Imaging Modality

Angiography;, Types Categories, , Signs & Symptoms, Treatment, Imaging Modality Angiography An angiography involves the use of water-soluble X-ray contrast media by injecting it into blood streams in arteries or veins with the purpose of imaging blood vessels. The process is meant to observe normal or pathological conditions of the vessel organization. By seeing the lumen of blood vessels and organs, an angiography can provide information concerning conditions like luminal narrowing and aneurismal widening.

Vessel access is essential and serious complications can appear if the substance is unable to pervade the veins and arteries, but this is rare and unlikely to occur. While these are some of the conditions that are frequently detected through an angiography, it can also play an important role in analyzing sources of bleeding, tumors, and diverse malformations in veins and arteries.

The discovery of X-rays led to some of the first experiments with angiographies as numerous individuals involved in the medical industry discovered that postmortem anatomy could be analyzed by using X-rays alongside of injecting opaque substances into blood vessels. "One of the earliest of such experimenters was Franz Exner, who apparently injected the hand of a cadaver with Teichmann's mixture (lime cinnabar and petroleum)." (Thomas & Banerjee 2013, p.

149) Early angiographies involved surgical exploration but the field rapidly progress through the twentieth century and doctors in the 1950s were using percutaneous arteriography while individuals in the 1980s were especially appreciative with regard to digital subtraction angiography (Thomas & Banerjee 2013, p. 150). People today are generally using digital subtraction when performing an angiography, as this is in most cases the most effective method to complete such a process. An angiography can either entail substances being injected into the blood stream in arteries or into the blood stream in veins.

The former process is called an artierography while the latter is related to as veneography. There are a series of factors that determine the terminology associated with an angiography: The organ that needs to be imaged The vessel area where the process is performed The selected strategy of access to the area The chosen method of access through the vessel A cerebral angiography is selected in cases when doctors want to discover aneurysms, blood clots, and a series of other issues with the vascular system in the brain.

The contrast medium is normally inserted through the femoral artery or through the carotid artery, as this makes it possible for the substance to reach the brain. Individuals undergoing a cerebral angiography are probable to experienced discomforts such as headaches or burning feelings in the head or neck.

A coronary angiography can be more complex and it involves the femoral artery being injected and the person in charge of the process (a cardiologist who is proficient in radiology or a radiologist) using a guide wire and a catheter with the purpose of reaching the coronary arteries. Depending on the area of the heart the cardiologist wants to access, the catheter can be introduced in either the right or the left ventricle.

In addition to assisting with the angiography, the catheter can also assist the cardiologist in observing blood pressures. A pulmonary angiography provides information with regard to blood circulation to the lungs. This is largely believed to be the most effective diagnostic strategy to detect and monitor pulmonary embolism. Even with this, many doctors are probable to refrain from considering it because less invasive methods such as CT or MRIs are available.

In contrast to cerebral and coronary angiographies, the pulmonary angiography involves the guide wire and the catheter being inserted into a vein rather than into an artery. The guide wire and the catheter go through the heart's chambers and are then taken to the pulmonary artery. The substance is then injected through the pulmonary artery and comes to circulate in pulmonary capillaries. Individuals who suffer from renal diseases require a kidney angiography in order for physicians to be able to observe how their kidneys work.

The fact that the contrast medium can further aggravate the patient's condition means that the procedure needs to be performed with extreme care and that patients undergoing the process have to be well-hydrated in order to avoid experiencing additional suffering. This type of angiography is usually performed through the femoral artery and eventually reaches renal arteries. A fluorescein angiography can help detect issues regarding the retina or circulatory problems.

A contrast medium is injected into a vein in the arm of the individual undergoing the process, goes through the body and eventually reaches vessels in the eye. Pictures are taken before and after the substance reaches the eye with the latter pictures being taken as the substance is moving in the back of the eye. This type of angiography is performed with the purpose of determining whether blood flows normally through eye vessels in the retina and the choroid.

If the physician comes across problems like blood clots or blood escaping from veins, he or she proceeds with performing further tests in order to discover exactly what triggers such symptoms. A celiac and mesenteric angiography is intended to use X-rays so as for doctors to get a better look at arterial branches that take.