Angiography:

Angiography refers to the medical test procedure, wherein a colored liquid dye is introduced into the arteries to craft the visibility of arteries in the x-rays tests being conducted on the patients. The graphical representation or the pictures obtained in the test procedure are called as angiograms. Previously, the angiography was known only for the detection of the status of the blood vessels. Presently, non-invasive tests are carried out that give accurate results without any trouble or threat to the safety of the patient. The non-invasive methods include ultrasound technique, MRI scans, Doppler technique, CT scans and venous dye injection also known as digital subtraction angiography. Quite frequently the angiography test, that shows clear representation of blood vessels, is conducted incase the doctor is planning to take up the surgery for that particular patient. Angiography is quite helpful in detection of blocked arteries that are outcome of weaker blood vessel walls. The different types of angiography include cerebral angiography, ct angiography, brain angiography, coronary angiography and renal angiography. 

Angiography Technique:

Prior to conducting an x-ray test, a small amount of fluid dye is entered into the vessels of blood flowing through the arteries of the patient. In case of heart arteries, the catheter is introduced specifically into the carotid arteries or the arteries arousing out of aorta or, rarely into the arms of the patient. Precaution is taken before the insertion of catheter into the artery to number the enclosed area with help of confined anaesthetic. A rounded tip, slender tiny wire is cautiously introduced inside the artery with the help of a needle. This needle is guided to the required position where the dying is to be done, with the help of x-ray image technique also known as fluoroscopy. After proper positioning, the needle is detached and a vessel that conducts or circulates fluid is tucked. Thereafter, with the help of a guide wire, the catheter is being introduced.  Once the catheter reaches the desired position, the guide wire is withdrawn and dye is introduced via catheter. The outcome could be that the patient may feel some heat in that area, but an individual need not worry of the same, as this sensation would vanish within some time. Finally, the motion or movement of blood vessels can be noticed on the monitors as speedily recorded x-rays.

Cons of Angiography:

Angiography though a good medical procedure possess some disadvantages too. Minor group of people are found allergic of fluid dyes, because of presence of iodine in the dye. The patients, who have already experienced any such notations, need to inform the doctor beforehand. Sometimes, the risk of catheter getting damaged inside the blood vessels may exist. Patients undergoing cerebral angiography may run the risk of severe unfavorable results. Pregnant women need to consult the doctor about the imposed risk of fluoroscopy to their baby. People already suffering from severe diseases such as liver, kidney or heart can be at larger threat as compared to the normal human beings. Thus, it becomes mandatory to get advice from the specialist in this field.