CT of liver cirrhosis checks _'s symptom

CT of liver cirrhosis checks _'s symptom
The liver is the substantive internal organs, because lack the density to compare with the difference, ordinary X-ray examination is difficult to distinguish and dissect structure and diseasePay attention to and change. The X-ray fault of the computer scans (CT) With the magnetic resonance imaging (MRI) Wait for the instrument to have higher organization's density that is distinguishedRate, has offered the objective basis for the fact that the image of liver pathological change is diagnosed. It has not had wound liver pathological change to sift that CT, MRI have become at presentFirst-selected inspection method selected and made a definite diagnosis of. First, inspection method of the liver CT, MRI (1) Prepare before checking Check on the same day and prohibit to eat 4- 6h. Carry on, sweep while being flat, can take 1 orally before the inspection. 5% - 3% are suffused with the amine liquid 800 of Portugal of shadow- 1000ml, strengthen, scan, take orally warm the intersection of boiled water and 800- 1000ml only, in order to make stomach and it has small intestines to hit belly to be plentiful, avoidObscure with lump of belly or lymph node increased, benefit the differentiation of internal organs such as the liver, gallbladder, spleen, pancreas, kidney,etc.. Ion using typeRadiography pharmaceutical strengthen person who scan, in advance should make iodine to be irritated to test; Nonionic radiography pharmaceutical ' Such as Omnipaque Iopamidol orUtravist,etc.) Strengthen, make iodine to be irritated to test seldom. False on sport shadow for avoiding, it should train patient to be calm to breathe before checking orFeel suffocated. In addition need to remove the metal ornament. At the barium should not remain sulfic acid competent CT scanning in the intestine, should wait for barium pharmaceuticals to arrange and try the back door bestAbout week) And then make CT inspection. These guarantee to scan the clear material particular of the picture. (2) CT inspection method CT inspection method have a lot of progress, many rows of use and the intersection of computer and the intersection of aftertreatment and upgrading of software of detector in recent years. Until CT check, by intravenous to offer radiography CT of profit to scan, call, sweep while being flat. Generally stare at organization and pathological change normallyOrganize CT value to differ by 10Hu and probably reveal the focus in the liver clearly at least, otherwise should go on by strengtheningCheck. 1,It is flat to sweep and scan the range to carry from diaphragm to the bottom flange of liver, including the whole liver, layer thick 10mm, can add the little focus thinlyLayer of scanning, layer thick 2- 5mm does not have continuous scanning of interval, regulates the wide, window location of the window conscientiously, increase contrast ratio, in order to benefit the focal oneDetection. The focus that there is high, low density in the liver in revealing and change is very valuable that it is flat to sweep, if tumour, fat is turned into, calcium in the liverMelting, bleeding, calculus, iron depositing, cyst, hemangioma,etc.. It is flat to sweep not to find pathological change but clinical or B other images of superior grade are studied and examinedCheck it is flat while sweeping finding pathological change needs to do differential diagnosis for person who suspected to has pathological change or CT, should strengthen the inspection. 2,Strengthen and check From the vein ' Or artery) Inherent artificial the intersection of shadow and pharmaceutical it comes to be often the intersection of liver and organization with pathological change organize, increase,The density is bad, can find that it has not flat to find pathological change while sweeping to check it to strengthen to call, distinguish the structure of blood vessel in, outside the liver and it is not the blood vesselStructure, distinguish that closes venereal disease of the quality to end ' J two points of wife and children. According to the disease ' diagnosis and differential diagnosis of growing the characteristic of the intensification and determining the nature. ( 1) It is the most frequently used method that non-dynamic CT lives in the group, takes the time of 1-2 minutes, 60% - 76% suffused with the shadow PortugalAmine solution 100- 150ml( 1. 5- 2ml/kg) Vein, people of note, inside, note finish go on from diaphragm to the intersection of liver and the whole liver scanning of bottom flange immediately,Can 2 repeat the scanning after 10-15 minute again according to need, namely delay the scanning. If should avoid scanning radiography pharmaceutical in the anaphase bloodThe density is on the low side, can adopt and pour into 50ml at the speed of 2-3ml/s first, and then instil at the speed of 1ml/s, namely group's note and drippingThe note combines together, the result is better. ( 2) Group's note scans dynamically and is divided into two kinds: One to enter bed dynamic scanning, scan range include the whole the intersection of liver and 3- 5 layerPiece one, take 13- 22 second, between the group this at intervals of 10 second, sweep complete liver, take 3- 4, the purpose of scanning in order toFind pathological change in the liver; Another kind is the one-layer dynamic scanning of fixed type of the bed, only choose an aspect with pathological change, pour into fastAfter radiography pharmaceutical, with the particular procedure, the interval, scan this aspect in order to observe the moving of radiography pharmaceutical of pathological change district repeatedlyThe attitude is full of the situation, is used mainly in the differentiation of hepatocarcinoma and hemangioma. ( 3) Artery radiography CT (CTA) It is the method that the angiography combines with CT. Especially to little tumour in the liverThe finding rate obviously increases, it is more and more to employ at present. Method: Puncture the intubate by the arteria femoralis, the conduit is put into inherent artery, the notePenetrate the intersection of radiography and pharmaceutical, because of hepatocarcinoma being mostly artery blood supply easy to strengthen, smaller than focus of 1cm, can find also. Shang Ke makes CTRadiography of portal vein (CTAp) ,Put the conduit into artery on the spleen artery or mesenterium, pour into quantitative radiography pharmaceutical (150-180ml) ,Liver one 75% - 80% By the blood supply of portal vein, so radiography pharmaceutical enters people's portal vein and makes the liver essence strengthen, and set offHappen artery blood supply low to strengthen the focus. And spiral CT angiography (spiral CT angiography, SCTA) Have degree to be quick damaging light, the intersection of ray and the intersection of quantity and low characteristic, can substitute the angiography with wound in very large range. ( 4) Delay CT to scan in recent years, after some authors report a large number of note artificial shadow pharmaceuticals once, through 4- Again in 6 hoursRepeat the scanning, can find the little focus in the liver. This is because radiography pharmaceutical is mostly excreted by the kidney, only the small part (invite10% ) Excrete by the liver, but the normal hepatocyte has function excreted and absorbed the organic iodine again, 4- person T value after 6 hoursSlightly improve, but hepatocarcinoma does not possess this kind of function, utilize the density of the two to be bad, can also find early hepatocarcinoma.
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