Association between Tomographic Characteristics of the Temporal Bone and Transtemporal Window Quality on Transcranial Color Doppler Ultrasound in Patients with Stroke or Transient Ischemic Attack

Brisson, Rodrigo Tavares; Santos, Renata da Silva Almeida; Stefano, Luiz Henrique Soares Santos; Barreira, Clara M; Arruda, Josevânia Fulgêncio de Lima; Dias, F.T.; Camilo, Millene Rodrigues; Pontes-Neto, Octávio Marques

doi:10.1016/j.ultrasmedbio.2020.10.023

Cited by 16 publications

(24 citation statements)

References 13 publications

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“…The temporal bone is the thinnest part of the skull that gives direct access to the brain, and unlike most parts of the skull, the squamous part of the temporal bone often consists of a single layer of cortical bone. Its thickness and mass density vary from 1.5 to 4.4 mm [27]- [30] and 1700 to 2000 kg/m 3 , respectively [29]. The cortical bone tissue of the temporal bone was found to have anisotropic elasticity [29].…”

Section: Introductionmentioning

confidence: 99%

“…The larger the thickness of the temporal bone, the higher the chance of failure; the probability of TWF was 93.5% for a heterogeneous temporal bone with a thickness larger than 2.7 mm [30]. The most important cause of TWF is pneumatization with an odds ratio of 7.9 [27]. While solely reduction of the central frequency of the probe might not be helpful [33], contrast agents significantly increase the backscattered signals power and seem to reduce the chance of TWF [2], [34], [35]; depending on the concentration of the contrast agent, the average signal-to-noise enhancement could be about 12 ± 5.4 dB [34].…”

Section: Introductionmentioning

confidence: 99%

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Refraction-Corrected Transcranial Ultrasound Imaging Through the Human Temporal Window Using a Single Probe

Mozaffarzadeh

Verschuur

Verweij

et al. 2022

IEEE Trans. Ultrason., Ferroelect., Freq. Contr.

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Transcranial ultrasound imaging (TUI) is a diagnostic modality with numerous applications, but unfortunately, it is hindered by phase aberration caused by the skull. In this article, we propose to reconstruct a transcranial B-mode image with a refraction-corrected synthetic aperture imaging (SAI) scheme. First, the compressional sound velocity of the aberrator (i.e., the skull) is estimated using the bidirectional headwave technique. The medium is described with four layers (i.e., lens, water, skull, and water), and a fast marching method calculates the travel times between individual array elements and image pixels. Finally, a delay-and-sum algorithm is used for image reconstruction with coherent compounding. The point spread function (PSF) in a wire phantom image and reconstructed with the conventional technique (using a constant sound speed throughout the medium), and the proposed method was quantified with numerical synthetic data and experiments with a bone-mimicking plate and a human skull, compared with the PSF achieved in a ground truth image of the medium without the aberrator (i.e., the bone plate or skull). A phasedarray transducer (P4-1, ATL/Philips, 2.5 MHz, 96 elements, pitch = 0.295 mm) was used for the experiments. The results with the synthetic signals, the bone-mimicking plate, and the skull indicated that the proposed method reconstructs the scatterers with an average lateral/axial localization error of 0.06/0.14 mm, 0.11/0.13 mm, and 1.0/0.32 mm,

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Refraction-Corrected Transcranial Ultrasound Imaging Through the Human Temporal Window Using a Single Probe

Mozaffarzadeh

Verschuur

Verweij

et al. 2022

IEEE Trans. Ultrason., Ferroelect., Freq. Contr.

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“…( 2015 ) showed that the incidence of TBW success was lower among African compared with White individuals. The equipment for assessing the determinants of TBW success was transcranial Doppler (TCD) in most studies, and the definition of success was the flow signals of cerebral artery—usually the middle cerebral artery—could be measured (Halsey, 1990 ; Yagita et al., 1996 ; Kwon et al., 2006 ; Lee et al., 2020 ; Brisson, Santos, et al., 2021 ; Schreuder et al., 2009 ). Few literature researched the influencing factors of the appearance of cerebral parenchyma by bidimensional ultrasound of TCS.…”

Section: Introductionmentioning

confidence: 99%

Factors affecting transtemporal window quality in transcranial sonography

Zhang

et al. 2022

Brain and Behavior

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Objective: To assess the influencing factors of transtemporal window quality and identify patients suitable for transcranial sonography (TCS) examination in twodimensional imaging. Methods:In this cross-sectional study, TCS was performed in 161 consecutive patients through the temporal bone window (TBW) in the neurology or neurosurgery department. Each patient's sex, age, height, weight, and temporal bone thickness (TBT) were collected. After examination, the patients were divided into two groups: TBW success and TBW failure. The data were statistically compared between the two groups.Results: Among the studied population, the total TBW success rate was 80.1% (95% confidence interval [CI]: 74-86). The TBW success rate was 91.4% (95% CI: 85-98) in males and 70.9% (95% CI: 61-81) in females (p = .001). Sex (p = .001), age (p = .002), height (p = .047), and TBT (p < .001) showed significant differences between the TBW success and failure groups. In males, only TBT (p = .001) showed a significant difference; in females, age (p < .001) and TBT (p = .003) showed a significant difference. The area under the receiver operating characteristic curve (AUC) of sex, age, and TBT and their combination was 0.686, 0.659, 0.842, and 0.922 (p < .001), respectively. The AUC of the combination of parameters was significantly greater than that of age and sex alone (p = .007; p = .0002) but not greater than that of TBT (p = .090). Conclusions:The TBW success rate varied with sex, age, height, and TBT. Males, younger patients, taller patients, and patients with a thinner temporal bone tended to be more suitable for the examination by TCS.

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“…In the diagnosis of acute ischemic stroke, transcranial Doppler ultrasound is an accurate and low-cost diagnostic method, which is widely popular in clinical practice. Studies have shown that compared with CTA detection, the sensitivity and specificity of transcranial Doppler ultrasound for diagnosing arterial occlusion in patients with ischemic stroke are more than 90% (35,36).…”

Section: Discussionmentioning

confidence: 99%

A systematic review and meta-analysis on transcranial Doppler in diagnosing ischemic cerebrovascular disease

Zhou¹,

Yu²,

Hu³

2021

Ann Palliat Med

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the mortality rate. Intracranial artery stenosis arises from atherosclerotic plaque, vasospasm, vasculitis, and so on (3,4). Atherosclerosis is also an important causative factor of ischemic stroke and emergency vascular occlusion (5). Correct diagnosis is a prerequisite for stratifying disease risks, formulating treatment plans, and reducing treatment risks.Digital subtraction angiography (DSA) is a new X-ray imaging system, which combines conventional angiography

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Association between Tomographic Characteristics of the Temporal Bone and Transtemporal Window Quality on Transcranial Color Doppler Ultrasound in Patients with Stroke or Transient Ischemic Attack

Cited by 16 publications

References 13 publications

Refraction-Corrected Transcranial Ultrasound Imaging Through the Human Temporal Window Using a Single Probe

Refraction-Corrected Transcranial Ultrasound Imaging Through the Human Temporal Window Using a Single Probe

Factors affecting transtemporal window quality in transcranial sonography

A systematic review and meta-analysis on transcranial Doppler in diagnosing ischemic cerebrovascular disease

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