2D rotational angiography for fast and standardized evaluation of peripheral and visceral artery stenoses.
OBJECTIVE
To investigate the value of rotational digital subtraction angiography (rDSA) for evaluation of peripheral and visceral artery stenoses compared to conventional digital subtraction angiography (cDSA).


METHODS
A phantom study was performed comparing the radiation dose of cDSA with two projections and rDSA by means of the 2D Dynavision technique (Siemens Medical Solutions, Forchheim, Germany). Subsequently, 33 consecutive patients (18 women, 15 men; mean±SD age 67±15 years) were examined by both techniques. In total, 63 vessel segments were analyzed by two observers with respect to stenoses, image contrast, and vessel sharpness.


RESULTS
Radiation dose was significantly lower with rDSA. cDSA and rDSA revealed 21 and 24 flow-relevant stenotic lesions and vessel occlusions (70-100%), respectively. The same stenosis grade was assessed in 45 segments. By means of rDSA, 10 lesions were judged to have a higher and 8 lesions a lower stenosis grade compared to cDSA. rDSA yielded additive information regarding the vessel anatomy and pathology in 29 segments. However, a tendency toward better image quality and sharper vessel visualization was seen with cDSA.


CONCLUSIONS
rDSA allows for multiprojection assessment of peripheral and visceral arteries and provides additional clinically relevant information after a single bolus of contrast medium. At the same time, radiation dose can be significantly reduced compared to cDSA.
Katoh
Marcus
M
Department of Diagnostic and Interventional Radiology, University Hospital Saarland, Kirrberger Strasse, 66421, Homburg, Germany. marcus.katoh@uks.eu
Opitz
Armin
A
Minko
Peter
P
Massmann
Alexander
A
Berlich
Joachim
J
Bücker
Arno
A
D000368:Aged; D015901:Angiography, Digital Subtraction / Q000379:methods*; D001157:Arterial Occlusive Diseases / Q000000981:diagnostic imaging*; D050197:Atherosclerosis / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D008297:Male; D016491:Peripheral Vascular Diseases / Q000000981:diagnostic imaging*; D019047:Phantoms, Imaging; D011829:Radiation Dosage; D015641:Radiography, Interventional; D018709:Statistics, Nonparametric; D016896:Treatment Outcome; D014781:Viscera / Q000098:blood supply*