Acute Aortic Dissection with Intimal Intussusception: MRI Appearances

Radiological diagnosis and classification of antegrade and retrograde Stanford type A intimal intussusception

“…Two case reports of antegrade intimal intussusception and magnetic resonance imaging (MRI) were found [10,26]. One noted the characteristic findings seen on CT scan [26]. We are the first to note a circular filling defect in the aortic arch on coronal CT reconstruction planes in antegrade intimal intussusception.…”

“…Karabult et al [24] in 1998 describe the U-shaped lucency of the windsock-like intimal flap in the aortic arch, thicker than the usual intimal flap. Two case reports of antegrade intimal intussusception and magnetic resonance imaging (MRI) were found [10,26]. One noted the characteristic findings seen on CT scan [26].…”

Circumferential Dissection of the Ascending Aorta ^|^ldquo;Intimo-Intimal Intussusception^|^rdquo;

“…Hufnagel named it "intimo-intimal intussusception" in 1962, 1) since then cases have been reported in approximately 30 articles. [2][3][4][5][6] This has also been referred to as a "circumferential" dissection, a "missing flap." Lucas advised naming it as "antegrade Stanford type A intimal intussusception."…”

New classification of aortic dissection during the cardiac cycle as pulsating type and static type evaluated by electrocardiogram-gated multislice CT

“…With MRI, neither radiation exposure nor motion of the intimal flap can be evaluated [12]. However, 64-320 slice CT has become much more widely available and in the near future, real time four dimensional images in which motion of the intimal flap can easily be evaluated should be available, with much more convenience than is possible with MRI.…”

“…The DeBakey [9,10] and Stanford classifications [6,11] are available for physicians to accurately classify AD using computed tomography (CT) [5,6] or magnetic resonance imaging (MRI) [12] and to choose the appropriate therapeutic treatment. But these modalities, especially CT, usually involve acquisition of static images [5].…”