Tabela 1
Parâmetros do exame de angio-TC para o paciente com sangramento gastrintestinal, segundo dados obtidos na literatura e demonstrando sua grande variabilidade(55 Jaeckle T, Stuber G, Hoffmann MH, et al. Detection and localization of acute upper and lower gastrointestinal (GI) bleeding with arterial phase multi-detector row helical CT. Eur Radiol. 2008;18:1406-13.,1010 Laing CJ, Tobias T, Rosenblum DI, et al. Acute gastrointestinal bleeding: emerging role of multidetector CT angiography and review of current imaging techniques. Radiographics. 2007;27:1055-70.,1111 Jaeckle T, Stuber G, Hoffmann MH, et al. Acute gastrointestinal bleeding: value of MDCT. Abdom Imaging. 2008;33:285-93.,1515 Angtuaco TL, Reddy SK, Drapkin S, et al. The utility of urgent colonoscopy in the evaluation of acute lower gastrointestinal tract bleeding: a 2-year experience from a single center. Am J Gastroenterol. 2001;96:1782-5.,2222 Elta GH. Approach to the patient with gross gastrointestinal bleeding. In: Yamada T, editor. Textbook of gastroenterology. 4th ed. Philadelphia, PA: Lippincott Williams & Wilkins; 2003. p. 698-723.
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27 Tew K, Davies RP, Jadun CK, et al. MDCT of acute lower gastrointestinal bleeding. AJR Am J Roentgenol. 2004;182:427-30.
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29 Scheffel H, Pfammatter T, Wildi S, et al. Acute gastrointestinal bleeding: detection of source and etiology with multi-detector-row CT. Eur Radiol. 2007;17:1555-65.
30 Zink SI, Ohki SK, Stein B, et al. Noninvasive evaluation of active lower gastrointestinal bleeding: comparison between contrast-enhanced MDCT and 99mTc-labeled RBC scintigraphy. AJR Am J Roentgenol. 2008;191:1107-14.
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32 Kennedy DW, Laing CJ, Tseng LH, et al. Detection of active gastrointestinal hemorrhage with CT angiography: a 4(1/2)-year retrospective review. J Vasc Interv Radiol. 2010;21:848-55.
33 Al-Saeed O, Kombar O, Morsy M, et al. Sixty-four multi-detector computerised tomography in the detection of lower gastrointestinal bleeding: a prospective study. J Med Imaging Radiat Oncol. 2011;55:252-8.
34 Chang WC, Tsai SH, Chang WK, et al. The value of multidetectorrow computed tomography for localization of obscure acute gastrointestinal bleeding. Eur J Radiol. 2011;80:229-35.
35 Sun H, Jin Z, Li X, et al. Detection and localization of active gastrointestinal bleeding with multidetector row computed tomography angiography: a 5-year prospective study in one medical center. J Clin Gastroenterol. 2012;46:31-41.
36 Yen HH, Chen YY, Yang CW, et al. Clinical impact of multidetector computed tomography before double-balloon enteroscopy for obscure gastrointestinal bleeding. World J Gastroenterol. 2012;18:692-7.-3737 Fung HS, Kwok PC, Lau S, et al. 64-Slice multi-detector computed tomography for detection of acute gastrointestinal bleeding. J HK Coll Radiol. 2008;11:13-8.).