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C-0407 - Quantitative and Qualitative Evaluation of Low Dose Craniocervical Computed Tomography Angiography (CCCTA) with Lower Tube Voltage Protocol
P. Chen1, Y.-P. Lin1, Y. Yen2, P.-H. Lai2; 1Kaohsiung City/TW 2Kaohsiung/TW
Type: Scientific Exhibit
Area of Interests: Head and neck, Vascular, Radioprotection / Radiation dose
Imaging Technique: CT-Angiography
Procedure: Radiation safety
Special Focuses: Aneurysms, Quality assurance

Aims and objectives:
Computed tomographic angiography (CTA) of head and neck has been increasingly used to assess craniocervical vessels clinically. CTA is crucial in patients with acute ischemic stroke or subarachnoid hemorrhage. In patients with acute stroke symptoms to assess intracranial and extracranial vessels, he[...]
Methods and materials:
Patient This retrospective study was performed with institutional review board approval of our hospital. Informed consent was obtained from all the participants. Between November 2015 and March 2017, 129 consecutive patients (49 men and 80 women; age range 19-79 years) were enrolled in this study to[...]
Results:
Patient characteristics Among the group A, group B, and group C, there was no significant difference in patient characteristics including the age, gender, body weight, body height, and BMI ( Table 1 ). Radiation dose assessment The volume CTDI (CDTIvol) of group A, B, and C was 9.13, 6.69, and 4[...]
Conclusion:
This study found that craniocervical CTA is feasible at 100 and 80 kVp with 60 ml of contrast agent used as compared with conventional 120 kVp. We demonstrated that using 80 kVp in group C had significantly higher arterial attenuation in all regions, and higher SNR and CNR in the shoulder region tha[...]
Personal information:
Po-An, Chen. M.D. Department of Radiology, Kaohsiung Veterans General Hospital, Taiwan No. 386, Ta-Chung 1st Road, Kaohsiung, Taiwan 81362 (Tel) 886-7-342-2121 ext. 6211 E-Mail address: evaporativem@gmail.com
References:
Saake M, Goelitz P, Struffert T et al (2012) Comparison of conventional CTA and volume perfusion CTA in evaluation of cerebral arterial vasculature in acute stroke. AJNR Am J Neuroradiol 33:2068-2073 Josephson SA, Bryant SO, Mak HK, Johnston SC, Dillon WP, Smith WS (2004) Evaluation of carotid steno[...]

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