Digitally subtracted angiography of the extremities in step-translation technique

Citation
J. Biederer et al., Digitally subtracted angiography of the extremities in step-translation technique, ROFO-F RONT, 172(4), 2000, pp. 354-360
Citations number
15
Language
TEDESCO
art.tipo
Article
Categorie Soggetti
Radiology ,Nuclear Medicine & Imaging
Journal title
ROFO-FORTSCHRITTE AUF DEM GEBIET DER RONTGENSTRAHLEN UND DER BILDGEBENDEN VERFAHREN
ISSN journal
1438-9029 → ACNP
Volume
172
Issue
4
Year of publication
2000
Pages
354 - 360
Database
ISI
SICI code
1438-9029(200004)172:4<354:DSAOTE>2.0.ZU;2-S
Abstract
Purpose: To evaluate, how routine application of i.a. DSA with the step-tra nslation technique using a single contrast bolus can effectively reduce rad iation exposure and the amount of contrast media in comparison to standard peripheral DSA. Method/Materials: 100 patients with peripheral arterial occ lusive disease were assessed with step-translation DSA, 100 with standard D SA using the same equipment. Imaging quality was rated two observers, judge ment by consensus. Comparison of the technical data (radiation dose, contra st media) was based on pairs of patients with similar constellations of ste noses to reduce selection bias. Results: Step-translation DSA was of high i maging quality from the iliac vessels to the popliteal artery. In the dista l leg, imaging was often impaired by effects like unilaterally delayed cont rast flow due to high grade stenosis or motion artifacts. 53% of the step t ranslation DSA required 1 or 2, 29% more than two additional DSA runs. Incl uding the additional runs, the average radiation exposure and the amount of contrast media (2434 cGycm(2)/128 ml) were comparable to those of standard DSA (2461 cCycm(2)/144 mi). Conclusions: Step-translation DSA provides hig h quality images. In routine application realization of the advantages over standard DSA such as reduction of examination times, radiation exposure an d amounts of contrast media may be impaired by poorly collateralized stenos es or motion artifacts demanding additional series.