Effects of dynamic range variations on the Doppler flow velocities of common carotid arteries

Donboklang Lynser; Chhunthang Daniala; Aman Yusuf Khan; Evarisalin Marbaniang; Ibamelaker Thangkhiew

doi:10.1016/j.artres.2018.02.001

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Volume 22, Issue C, June 2018, Pages 18 - 23

Effects of dynamic range variations on the Doppler flow velocities of common carotid arteries

Authors

Donboklang Lynser^a^{, *}^{, 1}, Chhunthang Daniala^a, Aman Yusuf Khan^a, Evarisalin Marbaniang^a, Ibamelaker Thangkhiew^b

^aNorth Eastern Indira Gandhi Regional Institute of Health and Medical Sciences, Mawdiangdiang, Shillong 793018, Meghalaya, India

^bNorth Eastern Hill University, Shillong 793022, Meghalaya, India

¹

Present address: Mawlai Kyntonmassar, Block B, Shillong 793008, Meghalaya, India.

^*Corresponding author. Department of Radiology and Imaging, North Eastern Indira Gandhi Regional Institute of Health and Medical Sciences, Mawdiangdiang, Shillong 793018, Meghalaya, India. E-mail address: bokdlynser@yahoo.co.in (D. Lynser).

Corresponding Author

Donboklang Lynser

Received 24 October 2017, Revised 16 January 2018, Accepted 3 February 2018, Available Online 20 March 2018.

DOI: 10.1016/j.artres.2018.02.001 How 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.
Open Access: This is an open access article distributed under the CC BY-NC license.

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Journal: Artery Research
Volume-Issue: 22 - C
Pages: 18 - 23
Publication Date: 2018/03/20
ISSN (Online): 1876-4401
ISSN (Print): 1872-9312
DOI: 10.1016/j.artres.2018.02.001 How to use a DOI?
Open Access: This is an open access article distributed under the CC BY-NC license.

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ris enw bib

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  -

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