[Radiation diagnosis of abdominal aortic aneurysms].
Four hundred and forty seven patients with aneurysms of the abdominal aorta (AAA), including 238 patients with aneurysmal rupture, were admitted to the Research Institute of Emergency Care in 1990 to 2000. The results of studies in 225 patients (ultrasonography in 197, computed tomography in 59, and angiography in 104), including 155 patients with aneurysmal rupture were analyzed. Computed tomography (CT) has proved to be the most accurate technique in the detection and estimation of the size of aneurysms, as well as in the identification of ruptures (83.9%) and inferior to angiography (AG) in the study of involvement of the branches of the abdominal aorta. Ultrasound study (US) ranks below CT in its accuracy (US detects ruptures in 67.8%); however, US surpasses CT and AS in screening, particularly valuable at an admission unit and an intensive care unit, which permits repeated studies. AG has turned out to be the most valid method in identifying the involvement of renal and iliac arteries in aneurysm and in detecting aortocaval anastomoses; yet it is inferior to US and CT (the former revealed rupture and dissection in 18.6% of cases) in solving other diagnostic tasks. Based on the analysis, the optimal sequence of studies in the patients is US, CT, and AG.
Belozerov
G E
GE
N. V. Sklifosovsky Research Institute of First Aid, Moscow.
Dubrov
E Ia
EIa
Sharifullin
F A
FA
Prozorov
S A
SA
Mikhaĭlov
I P
IP
Petrov
S A
SA
Timofeeva
A Iu
AIu
Zotin
A S
AS
D000368:Aged; D017544:Aortic Aneurysm, Abdominal / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology; D001019:Aortic Rupture / Q000175:diagnosis* / Q000000981:diagnostic imaging; D001027:Aortography; D001163:Arteriovenous Anastomosis / Q000000981:diagnostic imaging; D005260:Female; D006801:Humans; D007362:Intensive Care Units; D008297:Male; D008875:Middle Aged; D012680:Sensitivity and Specificity; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography