Superb microvascular imaging for detecting carpal tunnel syndrome compared with power Doppler ultrasonography

Zhang, Jili; Zhu, Weikai; Lin, Mingxin; Jiang, Chang

doi:10.1097/md.0000000000024575

Cited by 2 publications

(3 citation statements)

References 19 publications

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“…We also found that the blood flow signal area measured using SMI had a relatively stronger correlation with the median nerve compression ratio and neuropathy severity (measured by NCS) compared with PDUS. Overall, these findings suggest that SMI, which enables visualization of low volume and low velocity blood flow ( 18 , 19 , 29 ), is better than CDUS and PDUS for assessing median nerve pathology in CTS patients.…”

Section: Discussionmentioning

confidence: 82%

“…Second, their data showed a ceiling effect because vascularity was classified into only 4 groups based on the number and morphology of the blood flow signal areas, with no separate classifications for blood flow signal counts ≥3. As such, the utility of SMI for assessing CTS remains controversial and further meta-analyses are required ( 19 ). Additionally, those studies only used the Aplio500 device.…”

Section: Discussionmentioning

confidence: 99%

“…It enables separation of low velocity blood flow signals from overlaying tissue motion artifacts instead of suppressing these low flow signals and high-resolution visualization of low velocity blood flow, which cannot be achieved in color Doppler US (CDUS) or power Doppler US (PDUS). SMI performed with the Aplio 500 device was also reported to be superior to CDUS and PDUS for visualizing intraneural blood flow ( 18 , 19 ). Nevertheless, the utility of SMI for detecting CTS remains controversial.…”

Section: Introductionmentioning

confidence: 99%

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Diagnostic Utility of Superb Microvascular Imaging and Power Doppler Ultrasonography for Visualizing Enriched Microvascular Flow in Patients With Carpal Tunnel Syndrome

et al. 2022

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Recent studies suggest that blood flow changes in the median nerve may help confirm a diagnosis of carpal tunnel syndrome (CTS). Herein, we examined the utility of superb microvascular imaging (SMI), a new ultrasonographic (US) technique for visualizing microvascular flow, for detecting blood flow differences between CTS patients and healthy controls. We performed a retrospective analysis of 28 hands with suspected CTS. Patients received both nerve conduction and US examinations. Ten healthy volunteers were enrolled as the control group. The nerve compression ratio and the blood flow signal area were quantified using color Doppler US (CDUS), power Doppler US (PDUS), and SMI. Correlation analyses between the blood flow signal area, the compound muscle action potential of the thenar muscle, and the nerve compression ratio were performed. As a result, the mean nerve compression ratio was found to be significantly higher in the CTS group. There were no differences in the blood flow signal area between the groups using CDUS, while PDUS and SMI showed higher blood flow signals in the CTS group. The blood flow signal area measured by SMI had stronger correlations with the compound muscle action potential amplitude and the nerve compression ratio than those for PDUS. The diagnostic utility of SMI was equivalent to PDUS, but superior to conventional CDUS. Nevertheless, the blood flow signal by SMI was more strongly correlated with the electrophysiological severity and compression ratio than for PDUS. Use of SMI in future studies may help clarify the underlying mechanisms of blood flow changes in CTS.

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Section: Discussionmentioning

confidence: 82%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Diagnostic Utility of Superb Microvascular Imaging and Power Doppler Ultrasonography for Visualizing Enriched Microvascular Flow in Patients With Carpal Tunnel Syndrome

et al. 2022

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Intratesticular Vascular Architecture Seen by Ultrasound Microvascular Imaging (MicroV). Illustration of the Testis Vascular Anatomy

Visalli,

Salamone,

Mormina

et al. 2023

CMIR

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The testis is a richly vascularized organ supplied by low-flow thin caliber vessels that are only partially detected by traditional Doppler systems, such as color and power Doppler. : However, in the vascular representation, these techniques determine, albeit to different extents, a cut of the weak vessels due to the necessary application of wall filters that cut the disturbing frequencies responsible for artifacts generated by pulsations of the vascular walls and surrounding tissues. : These filters cut a specific range of disturbing frequencies, regardless of whether they may be generated by low-flow vessels. : Recently, a new technology, called Ultrasound Microvascular Imaging (MicroV) has been developed, which is particularly sensitive to slow flows. This new mode is based on new algorithms capable of better selecting the low frequencies according to the source of origin and cutting only the disturbing ones, saving the frequencies originating from really weak flows. : When Ultrasound microvascular imaging is used, the vascular map is more detailed and composed of macro and microvasculature, with more subdivision branches, facilitating the interpretation of the normal and, consequently, the pathological. : This review aims to describe the vascular architecture of the testis with Ultrasound Microvascular Imaging (MicroV) in healthy testis, compared to traditional color/power Doppler, related to normal anatomy.

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Superb microvascular imaging for detecting carpal tunnel syndrome compared with power Doppler ultrasonography

Cited by 2 publications

References 19 publications

Diagnostic Utility of Superb Microvascular Imaging and Power Doppler Ultrasonography for Visualizing Enriched Microvascular Flow in Patients With Carpal Tunnel Syndrome

Diagnostic Utility of Superb Microvascular Imaging and Power Doppler Ultrasonography for Visualizing Enriched Microvascular Flow in Patients With Carpal Tunnel Syndrome

Intratesticular Vascular Architecture Seen by Ultrasound Microvascular Imaging (MicroV). Illustration of the Testis Vascular Anatomy

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