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Aortic dissection: CT and angiographic comparisons.

C H Neumann, D F Guthaner, D W Wong

    Digitale Bilddiagnostik
    |March 1, 1984
    PubMed
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    Computed tomography (CT) effectively diagnoses aortic dissection, offering a valuable alternative to aortography. Dynamic CT is particularly useful for chronic cases and initial assessments, though aortography remains key for surgical planning.

    Area of Science:

    • Cardiovascular Imaging
    • Diagnostic Radiology

    Background:

    • Aortic dissection is a serious condition requiring accurate diagnosis.
    • Both computed tomography (CT) and aortography are used for diagnosis.
    • Classical diagnostic criteria for aortic dissection can sometimes be ambiguous.

    Purpose of the Study:

    • To compare the diagnostic accuracy of computed tomography (CT) and aortography in patients with aortic dissection.
    • To evaluate the utility of dynamic CT in differentiating true and false lumens.

    Main Methods:

    • Retrospective study of 35 patients with Type A (17) and Type B (18) aortic dissection.
    • Comparison of findings from computed tomography (CT) and aortography.
    • Analysis of dynamic CT with bolus technique in 20 cases.

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    Main Results:

    • CT confirmed the presence and type of aortic dissection in 32 of 35 patients.
    • Dynamic CT with appropriate bolus technique clearly differentiated true and false lumens in 16/20 cases.
    • CT aided diagnosis in 5 equivocal aortography cases by identifying intimal flaps, calcification, and false lumen clot.

    Conclusions:

    • Dynamic computed tomography (CT) is a valuable alternative to aortography for diagnosing aortic dissection.
    • CT is preferred for chronic dissections, follow-up, and initial workup of mediastinal masses.
    • Aortography remains essential for pre-surgical mapping of aortic branches.