Transoral carotid ultrasonography

Stroke; a Journal of Cerebral Circulation
M YasakaT Yamaguchi

Abstract

We attempted ultrasonographic evaluation of the distal extracranial internal carotid artery (ICA) using the transoral method (transoral carotid ultrasonography [TOCU]). The subjects consisted of five healthy volunteers and seven stroke patients. Examinations were performed with a color Doppler flow imaging system equipped with convex array transducers (7 or 9.5 MHz), originally designed for transrectal use. After local anesthesia of the pharynx, we inserted a probe covered with thin gum transorally, touching the tip to the pharyngeal posterolateral wall. We then attempted to detect the ICA and measure flow velocity of the distal extracranial ICA using principal images obtained by TOCU. TOCU was successfully performed in all subjects without any difficulty. In the healthy volunteers, the ICA was identified at a depth of 2.2+/-0.6 cm and visualized as a vertical linear vessel 2.9+/-0.3 cm in length and bent slightly backward. The diameter and mean flow velocity of the distal extracranial ICA were 4.7+/-0.2 mm and 50+/-7 cm/s, respectively. In the stroke patients, some remarkable findings were obtained, including a narrow ICA with low flow velocity in a patient with possible ICA dissection, a lucent echo without flow signal in a p...Continue Reading

References

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Citations

Oct 22, 2008·American Journal of Respiratory and Critical Care Medicine·Hiroshi IwamotoNobuoki Kohno
Jun 9, 2005·Internal Medicine·Masahiro YasakaKazuo Minematsu
Jul 16, 2005·Internal Medicine·Katsunori IsaKazuo Minematsu
Mar 22, 2012·Cerebrovascular Diseases·Rieko SuzukiKazuo Minematsu
Jul 4, 2012·Journal of Stroke and Cerebrovascular Diseases : the Official Journal of National Stroke Association·Nobuyuki OharaKazuo Kitagawa
Jan 17, 2012·Journal of Stroke and Cerebrovascular Diseases : the Official Journal of National Stroke Association·Hirokuni SakimaYusuke Ohya
Dec 2, 2008·Ultrasound in Medicine & Biology·Jürgen EggersGünter Seidel
Jun 6, 2009·Angiology·Takashi ShichitaYasushi Okada
Apr 24, 2018·Journal of Clinical Ultrasound : JCU·Yuta HagiwaraYasuhiro Hasegawa
May 26, 2005·Journal of Ultrasound in Medicine : Official Journal of the American Institute of Ultrasound in Medicine·Yusuke YakushijiKazuo Minematsu
Nov 24, 2006·Journal of Ultrasound in Medicine : Official Journal of the American Institute of Ultrasound in Medicine·Masahiro YasakaYasushi Okada
Jan 27, 2019·Journal of Clinical Ultrasound : JCU·Yuta HagiwaraYasuhiro Hasegawa
Aug 22, 2008·Journal of Ultrasound in Medicine : Official Journal of the American Institute of Ultrasound in Medicine·Noriko MakiharaYasushi Okada

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