Correlation of Tibial Low-Frequency Ultrasound Velocity with Femoral Radiographic Measurements and BMD in Elderly Women

Määttä, Mikko; Moilanen, Petro; Nicholson, Patrick; Cheng, Sulin; Timonen, J.; Jämsä, Timo

doi:10.1016/j.ultrasmedbio.2008.12.003

Cited by 12 publications

(5 citation statements)

References 41 publications

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“…This error can, however, be corrected by using the so-called bidirectional method [6]. It was discussed when results based on a previous version of the low-frequency ultrasound device were reported [27]. The present study used a new version of this device consisting of a hand-held array probe composed of optimally tuned, custom-made lowfrequency (400 kHz) elements fixed on a rigid base.…”

Section: Introductionmentioning

confidence: 99%

Low-frequency axial ultrasound velocity correlates with bone mineral density and cortical thickness in the radius and tibia in pre- and postmenopausal women

Kilappa

Moilanen

et al. 2010

Osteoporos Int

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Section: Introductionmentioning

confidence: 99%

Low-frequency axial ultrasound velocity correlates with bone mineral density and cortical thickness in the radius and tibia in pre- and postmenopausal women

Kilappa

Moilanen

et al. 2010

Osteoporos Int

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“…One major limitation was the limited measurement precision of the current prototype device. The bulky mechanical scanning setup limits the positioning accuracy and does not enable proper correction for the impacts of overlying soft tissue [8]. As a result, the in vivo precision (CV rms ) was limited.…”

Section: Discussionmentioning

confidence: 99%

“…The principle of the device and the measurement setup has been published previously [7,8]. In brief, two separate transducers ( f c = 200 kHz) mounted on a rail scanned a 30 mm distance.…”

Section: Methodsmentioning

confidence: 99%

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Association between low-frequency ultrasound and hip fractures - comparison with DXA-based BMD

Määttä

Moilanen

Timonen

et al. 2014

BMC Musculoskelet Disord

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BackgroundNew methods for diagnosing osteoporosis and evaluating fracture risk are being developed. We aim to study the association between low-frequency (LF) axial transmission ultrasound and hip fracture risk in a population-based sample of older women.MethodsThe study population consisted of 490 community-dwelling women (78–82 years). Ultrasound velocity (VLF) at mid-tibia was measured in 2006 using a low-frequency scanning axial transmission device. Bone mineral density (BMD) at proximal femur measured using dual-energy x-ray absorptiometry (DXA) was used as the reference method. The fracture history of the participants was collected from December 1997 until the end of 2010. Lifestyle-related risk factors and mobility were assessed at 1997.ResultsDuring the total follow-up period (1997–2010), 130 women had one or more fractures, and 20 of them had a hip fracture. Low VLF (the lowest quartile) was associated with increased hip fracture risk when compared with VLF in the normal range (Odds ratio, OR = 3.3, 95% confidence interval (CI) 1.3-8.4). However, VLF was not related to fracture risk when all bone sites were considered. Osteoporotic femoral neck BMD was associated with higher risk of a hip fracture (OR = 4.1, 95% CI 1.6-10.5) and higher risk of any fracture (OR = 2.4, 95% CI 1.6-3.8) compared to the non-osteoporotic femoral neck BMD. Decreased VLF remained a significant risk factor for hip fracture when combined with lifestyle-related risk factors (OR = 3.3, 95% CI 1.2-9.0).ConclusionLow VLF was associated with hip fracture risk in older women even when combined with lifestyle-related risk factors. Further development of the method is needed to improve the measurement precision and to confirm the results.

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“…Guided waves have multimodal and frequency‐dispersive properties due to the multiple reflections and complex modes conversion of longitudinal and shear waves in the bone cortex . Frequency‐dispersive guided waves have been extensively used for cortical bone characterization . However, only few studies notice and discuss the influence of guided waves on CEUS, even if the guided waves have been used to detect and trap microdroplets and gas bubbles in acoustic manipulation .…”

Section: Introductionmentioning

confidence: 99%

Influence of guided waves in bone on pulse‐inversion contrast‐enhanced ultrasound

et al. 2019

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Purpose Guided waves generated from bone cortex inevitably act on microbubbles flowing through skeletal muscle capillaries in contrast‐enhanced ultrasound (CEUS) and might influence the image quality. However, the action mechanism underlying the guided waves influence is still unknown, especially under contrast pulse‐inversion transmission mode. This study aimed to clarify the influence of guided waves on pulse‐inversion CEUS, which was investigated via in vitro infusion experiments. Method Tibia guided waves were detected at pulse‐inversion transmission and then characterized by using a short‐time Fourier transform energy distribution. Using results at normal incidence as a baseline, the influence of guided wave dispersion on the contrast and resolution of pulse‐inversion CEUS was investigated at an oblique incidence through continuous microbubbles infusion experiments in a vessel–tibia flow phantom. Results Frequency‐dispersive property of tibia guided waves was observed at phases 0° and 180°, which improved the contrast of CEUS and reduced its resolution. Pulse‐inversion CEUS balanced the contrast enhancement and resolution degeneration induced by guided waves. By contrast, contrast‐to‐tissue ratio of pulse‐inversion CEUS increased by up to 109.1 ± 13.2% (P < 0.05) due to guided waves and its resolution was up to 0.9 ± 0.1 times that of baseline. Conclusions Alterations of contrast and resolution in pulse‐inversion CEUS induced by guided waves might provide an additional assessment for the capillary perfusion in the skeletal muscle near the bone cortex.

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Correlation of Tibial Low-Frequency Ultrasound Velocity with Femoral Radiographic Measurements and BMD in Elderly Women

Cited by 12 publications

References 41 publications

Low-frequency axial ultrasound velocity correlates with bone mineral density and cortical thickness in the radius and tibia in pre- and postmenopausal women

Low-frequency axial ultrasound velocity correlates with bone mineral density and cortical thickness in the radius and tibia in pre- and postmenopausal women

Association between low-frequency ultrasound and hip fractures - comparison with DXA-based BMD

Influence of guided waves in bone on pulse‐inversion contrast‐enhanced ultrasound

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