Computed tomography - indications and the course of the examination
Computed tomography, abbreviated CT or CK (computed tomography) is an imaging diagnostic method that uses the action of X-rays. The test allows you to obtain sections of the examined organs, as well as their 3D visualization, which greatly improves the diagnostic process. A tomograph is used to perform a CT scan, and the image obtained with it is called a tomogram. Computed tomography was first performed for diagnostic purposes in the early 1970s in the United States.
The computer tomograph consists of three basic elements: the table, the operator's console and the scanner. During the examination, the scanner performs rotations around the patient's body, making a series of x-rays. Then the obtained image is transferred to a computer equipped with specialized software. The image is visible in 2D or 3D technology.
The aim of the study is to analyze the indications and the course of computed tomography examination.
Material and method
Review of the available literature on the subject.
Computed tomography is always performed based on a medical referral. It is the specialist who determines whether computed tomography will be more suitable than other imaging tests. Usually, computed tomography of the head and sinuses, chest and abdominal cavity are performed. The most common indications for head tomography are recurring headaches and dizziness, previous craniocerebral and sinus injuries, cerebral ischemia and strokes, as well as suspected neoplastic changes in the head. CT is also performed on people who struggle with neurodegenerative diseases, such as Alzheimer's disease. We can receive a referral for this examination froma neurologistan oncologist ophthalmologist, whether ENT specialist.
Chest tomography shows the structure of the heart, coronary vessels and the entire respiratory system. Usually it is recommended in the diagnosis of cancers of the respiratory and cardiovascular systems and in the assessment of the stage of coronary artery disease. He can refer us to this research cardiologist, pulmonologist or internal medicine doctor. Abdominal tomography is performed in order to detect possible inflammations (pancreas, large intestine, appendix, kidneys), gastrointestinal obstruction or bleeding, as well as kidney stones or thrombosis of the liver veins. In this case, a referral can be obtained from a gastroenterologist, urologist, whether gynecologist.
Computed tomography examination is completely painless and completely non-invasive for patients. It does not last long and allows you to quickly detect changes taking place inside the body. If the test was performed with a contrast agent, the patient may or may not experience some side effects, such as dizziness, a metallic taste in the mouth, nausea and vomiting, and palpitations.
Abbara S., Chow BJ, Pena AJ, Cury RC, Hoffman U., Nieman K., Brady TJ: Assessment of left ventricular function with 16- and 64-slice multi-detector computed tomography. Eur. J. Radiol. 2008, 67, 3, 481.
Agatston AS, Janoeitz WR, Hildner FJ, Zusmer NR, Viamonte M. Jr., Detrano R .: Quantification of coronary artery calcium using ultrafast computed tomography. J. Am. Coll. Cardiol. 1990, 15, 4, 827.
Becker CR, Kleffel T., Crispin A., Knez A., Young J., Schoepf UJ, Haberl R., Reiser MF: Coronary artery calcium measurement: agreement of multirow detector and electron beam CT. Am. J. Roentgenol. 2001, 176, 5, 1295.
Budoff MJ, Dowe D., Jollis JG, Gitter M., Sutherland J., Halamert E., Scherer M., Bellinger R., Martin A., Benton R., Delago A., Min JK: Diagnostic performance of 64-multidetector row coronary computed tomographic angiography for evaluation of coronary artery stenosis in individuals without known coronary artery disease: results from the prospective multicenter ACCURACY (Assessment by Coronary Computed Tomographic Angiography of Individuals Undergoing Invasive Coronary Angiography) trial. J. Am. Coll. Cardiol. 2008, 52, 21, 1724.
Budoff MJ, Georgiou D., Brody A., Agatston AS, Kennedy J., Wolfkiel C., Stanford W., Shields P., Lewis RJ, Janowitz WR, Rich S., Brundage BH: Ultrafast computed tomography as a diagnostic modality in the detection of coronary artery disease: a multicenter study. Circulation 1996, 93, 5, 898.
Callister TQ, Cooil B., Raya SP, Lippolis NJ, Russo DJ, Raggi P .: Coronary artery disease: improved reproducibility of calcium scoring with an electron beam CT volumetric method. Radiology 1998, 208, 3, 807.
Girard SE, Miller FA Jr., Orszulak TA, Mullany CJ, Montgomery S., Edwards WP, Tazelaar HD, Malaouf JF, Tajik AJ: Reoperation for prosthetic aortic valve obstruction in the era of echocardiography: trends in diagnostic testing and comparison with surgical findings. J. Am. Coll. Cardiol. 2001, 37, 2, 579.
Min JK, Shaw LJ, Devereux RB, Okin PM, Weinsaft JW, Russo DJ, Lippolis NJ, Berman DS, Callister TQ: Prognostic value of multidetector coronary computed tomographic angiography for prediction of all-cause mortality. J. Am. Coll. Cardiol. 2007, 50, 12, 1161.
le Polain de Waroux JB, Pouleur AC, Goffinet C., Pasquet A., Vanoverschelde JL, Gerber BL: Combined coronary and late-enhanced multidetector-computed tomography for delineation of the etiology of left ventricular dysfunction: comparison with coronary angiography and contrast-enhanced cardiac magnetic resonance imaging. Eur Heart J. 2008, 29, 2, 2544.
Sarno G., Decramer I., Vanhoenacker PK, De Bruyne B., Hamilos M., Cuisset T., Wyffels E., Bartunek J., Heyndrickx GR, Wijns W .: On the inappropriateness of noninvasive multidetector computed tomography coronary angiography to trigger coronary revascularization: a comparison with invasive angiography. J. Am. Coll. Cardiol. Interv. 2009, 2, 6, 558
Sheth T., Dodd JD, Hoffmann U., Abbara S., Finn A., Gold HK, Brady TJ, Cury RC: Coronary stent assessability by 64 slice multi-detector computed tomography. Catheter Cardiovasc. Interv. 2007, 69, 7, 933.
Stary HC, Chandler AB, Dinsmore RE, Fuster V., Glagov S., Insull W. Jr., Rosenfeld ME, Schwartz CJ, Wagner WD, Wissler RW: A definition of advanced types of atherosclerotic lesions and a histological classification of atherosclerosis. A report from the Committee on Vascular Lesions of the Council on Atherosclerosis, American Heart Association. Circulation 1995, 92, 5, 1355.
Stein PD, Yaekoub AY, Matta F., Sostmann HD: 64-slice CT for diagnosis of coronary artery disease: a systematic review. Am. J. Med. 2008, 121, 8, 715.
Wilson PW, D'Agostino RB, Levy D., Belanger AM, Silbershatz H., Kannel WB: Prediction of coronary heart disease using risk factor categories. Circulation 1998, 97, 18, 1837.
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