Effects of dynamic range variations on the Doppler flow velocities of common carotid arteries
Present address: Mawlai Kyntonmassar, Block B, Shillong 793008, Meghalaya, India.
- DOI
- 10.1016/j.artres.2018.02.001How to use a DOI?
- Keywords
- Common carotid artery; Dynamic ranges; End diastolic velocity; Peak systolic velocity; Ultrasound
- Abstract
Introduction: Doppler ultrasound is the commonest diagnostic tool used to evaluate the internal, external and common carotid arteries (CCA). Peak systolic velocity (PSV) is the best Doppler parameter for quantifying carotid artery degree of stenosis.
Materials and methods: Normal Doppler waveforms of 24 CCA from 12 healthy individuals of age 22–28 years were analysed in the department of radiology, NEIGRIHMS, Shillong. PSV, EDV and RI at 9 MHz transducer frequencies and variable DR of 35,45,55,65,75 &85 Decibels (dB) were compared.
Statistical analysis: One-Way repeated measures ANOVA; parameters expressed as Mean ± SEM. p value significant at <0.05.
Aim: To study the effect of variable dynamic ranges (DR) on the PSV, end diastolic velocity (EDV) and resistive index (RI) of CCA.
Results: For PSV of the right CCA at 9 MHz, there was significant differences on variable DR as determined by One-Way repeated measures ANOVA [F (5, 55) = 5.54, p < 0.05]. There was however no significant differences in the PSV of the left CCA; EDV and RI at variable dynamic ranges in both the right and left CCA. Summarised mean value for all PSV of both sides shows significant difference between variable dynamic ranges as determined by One-Way repeated measures ANOVA [F (5, 115) = 2.85, p < 0.05] and Post-hoc analysis revealed that there was a significant difference only between 35 dB to 55 dB and 85 dB.
Conclusion: Variable DR while improving sonographic contrast result in significant variation of PSV in the CCA particularly on the right CCA.
- Copyright
- © 2018 Association for Research into Arterial Structure and Physiology. Published by Elsevier B.V. All rights reserved.
- Open Access
- This is an open access article distributed under the CC BY-NC license.
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TY - JOUR AU - Donboklang Lynser AU - Chhunthang Daniala AU - Aman Yusuf Khan AU - Evarisalin Marbaniang AU - Ibamelaker Thangkhiew PY - 2018 DA - 2018/03/20 TI - Effects of dynamic range variations on the Doppler flow velocities of common carotid arteries JO - Artery Research SP - 18 EP - 23 VL - 22 IS - C SN - 1876-4401 UR - https://doi.org/10.1016/j.artres.2018.02.001 DO - 10.1016/j.artres.2018.02.001 ID - Lynser2018 ER -