Clinical application of DSA and evaluation of its methods: analysis of 160 cases and review of literature.
A total of 160 patients of two hospitals received 192 DSA examinations with different contrast administrations, and techniques of performing DSA were analyzed, compared, and evaluated with reference to the literature. It was concluded that (1) the peripheral injection of contrast material for IVDSA via cannula is simpler than that via a short catheter, but the incidences of contrast extravasation in both cases are higher than with central injection. (2) Both the lower part of the superior vena cava and the right atrial cavity are safe sites for central injection. With central injection for IVDSA, the arterial iodine concentration is approximately double that of peripheral injection, and consistent high quality examinations of the intracranial vessels may be obtained. However, neither peripheral nor central injections can visualize the small vessels clearly. (3) IVDSA may be substituted for conventional angiography only in examinations of the aorta and its main branches. (4) IADSA is becoming a superior angiographic technique and its clinical application is increasing. In addition, means of avoiding contrast extravasation during IVDSA and the main points of selecting the optimal technique for DSA are described in this paper.
Yong
O Y
OY
Department of Imaging Diagnosis, Inner Mongolia Autonomous Region's Hospital, Huhehaote, China.
Ma
H P
HP
Gu
S B
SB
Zhou
Q H
QH
Zhang
S L
SL
Liu
P Z
PZ
Zhang
J Y
JY
D000293:Adolescent; D000328:Adult; D000368:Aged; D000792:Angiography; D015901:Angiography, Digital Subtraction / Q000379:methods; D002648:Child; D003287:Contrast Media / Q000008:administration & dosage; D005260:Female; D006801:Humans; D007269:Injections, Intra-Arterial; D007275:Injections, Intravenous; D008297:Male; D008875:Middle Aged; D014652:Vascular Diseases / Q000000981:diagnostic imaging
D003287:Contrast Media