Head and Neck Imaging
Application Value of Contrast Agent Peak Value Method for Test Bolus Ellipsometry in Pulmonary Artery CTA Examination
Author：ZHOU Ping, CAI Qing, SHEN Yu-ying,et al.
affiliation：Department of Radiology, Suzhou Municipal Hospital Eastern, Suzhou 215001, Jiangsu Province, China
PDFAbstract
Objective To evaluate the application value of test bolus injection combined with pulmonary artery trunk area measurement method in pulmonary artery CTA. Methods 32 pulmonary artery CT patients examined on Phillips 128 - row ICT from July 2017 to may 2018 were retrospectively selected. the method of small dose bolus injection combined with ellipsometry in the main pulmonary artery was used. the peak time of contrast agent plus 1 second was used as the delay time of image acquisition of pulmonary artery CTA. The reconstructed images were evaluated subjectively by three doctors above the title of associate high school. Results Based on the evaluation of the axial images of pulmonary artery CTA and MIP, VR and MPR post-processing of the three-dimensional workstation, among the 32 cases examined, 26 cases were excellent and 6 cases were good, which satisfied the clinical diagnosis. Conclusion The method of detecting the peak value of contrast medium in test bolus ellipse region is an effective method for setting the scanning delay time of pulmonary CTA examination, which can provide satisfactory image for clinic.
【Keyword】Test Bolus; Pulmonary Artery; CT Angiography; Regions; Peak
【Chart number】R542.5+4
【Document Identification Number】A
【DOI】10.3969/j.issn.1672-5131.2018.12.019
Chinese journal of CT and MRI
th16Volume， th 12 Issue
2018Year12Month
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