Clinical Assessment of Intralaryngeal Ultrasonography

Tamura, Etsuyo; Kitahara, Satoshi; Kohno, Naoyuki

doi:10.1097/00005537-200110000-00019

Cited by 24 publications

(11 citation statements)

References 7 publications

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“…The boundaries of the tumor could be identified, and radical treatment could be conducted with the minimum necessary resection. 20 In the future, when endoscopic laser surgery is performed for early glottic carcinoma, the role of the voice as the means of communication should be kept in mind during evaluation of the effects arising from treatment of the tumor.…”

Section: Discussionmentioning

confidence: 99%

Voice Quality After Laser Surgery or Radiotherapy for T1a Glottic Carcinoma

et al. 2003

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Section: Discussionmentioning

confidence: 99%

Voice Quality After Laser Surgery or Radiotherapy for T1a Glottic Carcinoma

et al. 2003

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“…Arens and Glanz 11 also demonstrated that high-frequency ultrasound allowed clinicians to evaluate the size and infiltration of laryngeal lesions and perform a more accurate preoperative staging than when using CT or MRI. Moreover, Tamura et al 12 characterized the properties of VF nodules, polyps, cysts, and cancer using 30 MHz endolarynx sonography. Tamura et al 13 reported that the epithelium, LP, and VM of the VFs could be visualized by 30 MHz endolarynx sonography.…”

Section: Introductionmentioning

confidence: 99%

High frequency ultrasonic characterization of human vocal fold tissue

Huang

Sun

Dailey

et al. 2007

The Journal of the Acoustical Society of America

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Recently, endolaryngeal sonography at frequencies ranging from 10 to 30 MHz has been found to be useful in diagnosing diseases of the vocal folds (VFs). However, image resolution can be further improved by ultrasound at higher frequencies, necessitating the measurement of high-frequency acoustic properties of VF tissue. The ultrasonic parameters of integrated backscatter, sound velocity, and frequency-dependent attenuation coefficient were measured in both the lamina propria (LP) and vocalis muscle (VM) of human VFs using a 47 MHz high-frequency ultrasonic transducer. The integrated backscatter was -173.44+/-6.14 (mean+/-s.d.) and -195.13+/-3.58 dB in the LP and VM, respectively, the sound velocity was 1667.68+/-44.9 and 1595.07+/-39.33 ms, and the attenuation coefficient at 47 MHz was 8.28+/-1.72 and 7.17+/-1.30 dBmm. The difference between these ultrasonic parameters may be attributed to variations in the structure and fiber concentrations in VF tissue. These results could serve as a useful clinical reference for the further development of high-frequency ultrasound devices for endolarynx sonography applications.

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“…11,12 Although similar results have been demonstrated for the larynx in the past, endosonography has drawn little attention from otolaryngologists thus far. 3,8 However, in a series of 74 patients undergoing surgery for laryngeal cancer at our institution, endolaryngeal ultrasound was shown to have comparable results to CT and MRI, and significantly lower costs, with the advantages of earlier detection of smaller tumours as well as better demonstration of the exact extension, midline crossing and cartilage infiltration of laryngeal lesions. Therefore, this simple and non-invasive method also qualifies for use in the larynx.…”

Section: Discussionmentioning

confidence: 92%

Technique of high-frequency endolaryngeal ultrasound

Kraft

Arens

2008

J. Laryngol. Otol.

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Objective: We describe in detail the technique of in vivo endolaryngeal ultrasound during microlaryngoscopy, offering a number of practical suggestions which may be of use, especially to the otolaryngologist.Methods: Endosonography is a non-invasive imaging technology usually applied for the assessment of local tumour growth and regional lymph node metastases in the digestive tract.Conclusions: Due to a penetrating depth of up to 25 mm and a high tissue resolution, endosonography also qualifies for use in the larynx. The technique may have a potentially important role in the intra-and post-operative investigation of laryngeal lesions bigger than 3 mm.Key words: Ultrasound; Imaging; Larynx Neoplasm; Laryngology; Laryngoscopy Introduction High-frequency ultrasound is a common imaging modality used to examine the thyroid, salivary glands, lymph nodes, and soft tissues in the head and neck. 1 However, a transcervical approach does not generally allow complete sonographic evaluation of the larynx, due to ossification and intraluminal air. 2 For this reason, computed tomography (CT) and magnetic resonance imaging (MRI) are used to supplement microlaryngoscopy as additional diagnostic tools in the investigation of more extensive laryngeal lesions. 3 Endoscopic versions of ultrasound technology have been developed and successfully applied in the fields of cardiology and gastroenterology. 4,5 Recent investigations of laryngeal endosonography have demonstrated a penetrating depth of 10 to 25 mm (depending on the applied frequency) and a high tissue resolution. 6 -9 Therefore, endolaryngeal ultrasound may be able to predict the exact extension of a laryngeal tumour before surgery is performed, and to assist in finding the best therapeutic solution for the patient. 3 Thus, this non-invasive method could represent an additional diagnostic tool in the field of laryngology.There is currently no precise description in the literature of how to perform in vivo endolaryngeal ultrasound imaging of the larynx. Therefore, the objective of the present study was to fill this gap, and also to offer a number of practical suggestions on the use of this technology.

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Clinical Assessment of Intralaryngeal Ultrasonography

Cited by 24 publications

References 7 publications

Voice Quality After Laser Surgery or Radiotherapy for T1a Glottic Carcinoma

Voice Quality After Laser Surgery or Radiotherapy for T1a Glottic Carcinoma

High frequency ultrasonic characterization of human vocal fold tissue

Technique of high-frequency endolaryngeal ultrasound

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