Med. praxi. 2010;7(2):90-94

CT - basic of survey, indications, contra-indication, possibilities, practical experience

MUDr.Věra Peterová, CSc.
Radiodiagnostická klinika 1. LF UK a VFN, Praha

Computerized tomography examination (CT) is based on the measurement of absorption of X-ray beam in a thin layer of the investigated

area of the body. CT machine consists of a system of rotating X-ray tube and sector of detectors localized on the ring of examination circle

of CT device (gantry). Mathematical calculation determines the amount of X-ray absorption shown in shades of gray. To determine the

density range (extent of absorption of radiation and scattering radiation) in the area Hounsfield´s units (HU) are used. The article discusses

types of CT examinations, its indications in different parts of the body, preparation of the patient before the examination, the

possibility of using contrast media.

Keywords: computed tomography, CT, principles, indications

Published: April 22, 2010  Show citation

ACS AIP APA ASA Harvard Chicago Chicago Notes IEEE ISO690 MLA NLM Turabian Vancouver
Peterová V. CT - basic of survey, indications, contra-indication, possibilities, practical experience. Med. praxi. 2010;7(2):90-94.
Share...
Download citation
  • BibTeX (.bib)
  • Bookends (.ris)
  • EasyBib (.ris)
  • EndNote (.enw)
  • EndNote 8 (.xml)
  • ISI WoS (.isi)
  • Medlars (.medlars)
  • Mendeley (.ris)
  • MODS (.xml)
  • Papers (.ris)
  • RefWorks (.txt)
  • RefManager (.ris)
  • RIS (.ris)
  • MS Word (.xml)
  • Zotero (.ris)
    • Open full article

    References

    1. Prokop M, Galanski M. (Eds.) Spiral and multislice tomography of the body. Stuttgart: Georg Thieme Verlag, 2003. Go to original source...
    2. Brink JA, Wang G, McFarland EG. Optimal section spacing in single-detector helical CT. Radiology 2000; 214: 575-578. Go to original source... Go to PubMed...
    3. Kasales CJ, Hopper KD, Ariola DN, et al. Reconstructed helical CT scans: improvement in z-axis resolution compared with overlapped and nonoverlapped conventional CT scans. AJ 1995; 164: 1281-1284. Go to original source... Go to PubMed...
    4. Moeller TB, Reif E. (Eds), Normal findings in CT and MRI. Stuttgart: Georg Thieme Verlag, 2000: 72-182.
    5. Brink JA, Wang G, McFarland EG. Optimal section spacing in single-detector helical CT. Radiology 2000; 214: 575-578. Go to original source... Go to PubMed...
    6. Seidensticker PR, Hofmann LK. Dual source CT imaging. 2008 Heidelberg: Springer, Seidensticker PR, Hofmann LK (eds.): 1-303. Go to original source...
    7. Ferda J, Novák M, Kreuzberg B. Výpočetní tomografie. Houdek L (ed.). Praha: Galén, 2002.
    8. Černoch Z. Neuroradiologie. Hradec Králové: Nucleus HK 2000; 14-21: 473-573. Go to original source...
    9. Zeman RK, Baron RL, Jeffrey Jr. RB, et al. Helical body CT: evolution of scanning protocols. AJR 1998; 170: 1427-1438. Go to original source... Go to PubMed...
    10. Mechl M. Metodický list intravaskulárního podání jodových kontrastních látek (JKL). Čes Radiol 2007; 61(1): 105-107.
    11. Kalita Z. Algoritmus diagnostiky a léčby cévních mozkových příhod. Neurol pro praxi 2000; 1(1): 28-30.
    12. Španiel E, Ehler E. Ischemické postižení corpus callosum. Ischaemia of the corpus callosum. Čes Slov Neurol. Neurochir 1996; 59(92): 335-337.
    13. Nosál V, Šaňák D, Herzig, et al. Náhla cievna mozgová príhoda ischemická - súčasné zobrazovacie možnosti. Čs Neurol Neurochir 2006; 69/102(4): 272-279.
    14. Neumann J, Mikulík R, Václavík D, Školoudík D. Standard pro diagnostiku a léčbu pacoentů po tranzitorní ischemické atace. Čes Slov Neurol Neurochir 2006; 69/102(4): 326-330.
    15. Drábek P, Paleček T. Hemoragie v caput ncl. caudati. Hemorrhage in the head of the caudate nucleus. Čes Slov Neurol Neurochir 1996; 59(92): 314-317.
    16. Němeček S, Němečková J, Cerman J. Patomorfologie poranění mozku. Neurologie pro praxi 2003; 4(6): 290-295.
    17. Málek V. Chronický subdurální hematom. Neurologie pro praxi 2003; 4(6): 307-311.
    18. Tichý T, Mészárosová H, Novotný J. Multislice CT - Perfuze mozku. Praktická Radiol 2006; 2(11): 10-15.
    19. Ferda J. CT angiografie. Houdek L (Ed.), Praha: Galén, 2004: 3-408.
    20. Procházka V, Čížek V, Kučera D, et al. Stenózy vnitřní krkavice - endovaskulární léčba. Neurologie pro praxi 2001; 1(2): 193-197.
    21. Peterová V, et al. Páteř a mícha. Houdek L (ed.), Praha: Galén, 2005: 47-53, 69-97, 113-123.
    22. Ferda J, Novák M, Bosman R, Kreuzberg B. Přínos multidetektorové výpočetní tomografie v zobrazení poranění páteře bezpečnostními pásy. Čes Radiol 2008; 62(2): 203-209.
    23. Seidl Z, Obenberger J, Peterová V, Viták T. Algoritmus vyšetření při podezření na diskopatii v oblasti bederní páteře. Prakt. Radiol 1999; 4(2): 12-13.
    24. Ptáček J. Multislice CT. Prakt Radiol 2007; 12(2): 6-11.
    25. Rubin GD, Leung AN, Robertson VJ, et al. Thoracic spiral CT: influence of subsecond gantry rotation on image quality. Radiology 1998; 208: 771-776. Go to original source... Go to PubMed...
    26. Janík V, Knopová Z, Kašpárek I, et al. Spirální CT v diagnostice ureterolitiázy. Čes Radiol 2003; 57(2): 55-63.
    27. Baxa J, Ferda J, Novák P, et al. Úloha CT-enterografie v zobrazení obstrukce tenkého střeva. Čes Radiol 2008; 62(1): 66-73.

    Return to the content


    Medicine for Practice

    Madam, Sir,
    please be aware that the website on which you intend to enter, not the general public because it contains technical information about medicines, including advertisements relating to medicinal products. This information and communication professionals are solely under §2 of the Act n.40/1995 Coll. Is active persons authorized to prescribe or supply (hereinafter expert).
    Take note that if you are not an expert, you run the risk of danger to their health or the health of other persons, if you the obtained information improperly understood or interpreted, and especially advertising which may be part of this site, or whether you used it for self-diagnosis or medical treatment, whether in relation to each other in person or in relation to others.

    I declare:

    1. that I have met the above instruction
    2. I'm an expert within the meaning of the Act n.40/1995 Coll. the regulation of advertising, as amended, and I am aware of the risks that would be a person other than the expert input to these sites exhibited

    No
    Yes

    If your statement is not true, please be aware
    that brings the risk of danger to their health or the health of others.