Title: The Value of CTA Fused Images of the Late Arterial Phase Scanning in the Assessment of Renal Artery and Vein System
Abstract: Objective To discuss the value of CTA with fusion imaging technique in assessment of renal artery and vein system.Methods twenty-six patients with suspected renal lesions by ultrasonic examination and 5 volunteers underwent German Siemens Somatom Sensation 16 MDCT examination,including plain CT scan and the early arterial phase,late arterial phase and parenchymal phase scan.Then the data were transferred to GE Workstation ADW 4.2 for 3 D reconstruction with the software packages of Volume viwer plus voxtool 6.3.19.Two radiologists assessed all CTA images of demonstrating renal artery and vein system.When disagreement was encountered,agreement was reached through discussion.Results CTA of the late arterial phase with fusion imaging technique was same to CTA of the early arterial phase in detection of accessory renal artery and early branches of renal artery.The detected rate of accessory renal artery of left and right kidney was 32.3% and 6.5% respectively,while for the early branches of left and right renal artery was 12.9% and 9.7% respectively and for the circumaortic left renal vein,the retroaortic left renal vein and multi right renal vein was 16.1%,3.2% and 32.3% on the late arterial phase respectively.No further information was found on the parenchymal phase.The detected rate of the left adrenal vein,the left gonadal vein and the lumbar vein on late arterial phase images was 83.9%,87.1% and 61.3%,corresponding to the parenchymal phase scanning(87.1%,93.5% and 64.5%,respectively),and no statistical significance was found between them(P0.05).The CTA image quality of the late arterial phase with fusion imaging technique was superior to that of the parenchymal phase.Conclusion CTA of the late arterial phase with fusion imaging technique can demonstrate renal artery and vein system simultaneously and helpful to reduce radiation dose of patients and save examination time.
Publication Year: 2007
Publication Date: 2007-01-01
Language: en
Type: article
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