Power Doppler sonography: clinical applications

Martinoli, Carlo; Pretolesi, Fabio; Crespi, Giovanni; Bianchi, Stefano; Gandolfo, Nicola; Valle, Maura; Derchi, Lorenzo E.

doi:10.1016/s0720-048x(98)00054-0

Cited by 96 publications

(63 citation statements)

References 40 publications

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“…12 In so doing, PDU is not affected by flowdirection artifacts (eg, aliasing), allowing a lower pulse-repetition frequency to be used, which improves sensitivity to slowmoving blood within small vessels. 12,15 Therefore, PDU has an advantage when assessing musculoskeletal tissues for evidence of abnormal vascular perfusion.…”

Section: T T Conclusionmentioning

confidence: 99%

Hyperemia in Plantar Fasciitis Determined by Power Doppler Ultrasound

McMillan

Landorf²,

Gregg³

et al. 2013

J Orthop Sports Phys Ther

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Section: T T Conclusionmentioning

confidence: 99%

Hyperemia in Plantar Fasciitis Determined by Power Doppler Ultrasound

McMillan

Landorf²,

Gregg³

et al. 2013

J Orthop Sports Phys Ther

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“…5 In particular, it has significant advantages over colour Doppler in detecting tissue vasculature because of its reduced noise, angle independence, and lack of aliasing, as has already been demonstrated in focal lesions of the gastrointestinal tract. 6 It may therefore enhance the performance of grey scale US in detecting internal fistulae complicating CD by showing the presence of flow in peri-intestinal lesions that are compatible with fissures and fistulae, and may also provide a new means of studying vascularisation within internal fistula walls in vivo.…”

mentioning

confidence: 99%

The vascularity of internal fistulae in Crohn's disease: an in vivo power Doppler ultrasonography assessment

Maconi

Sampietro²,

Russo³

et al. 2002

Gut

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Aim: To evaluate the efficacy of power Doppler sonography (US) in depicting internal fistulae and their vascularity, and to study the characteristics of blood flow within the fistula wall. Patients and methods: The study involved 45 consecutive patients with Crohn's disease and suspected internal fistulae detected by grey scale US. The fistulae were subsequently evaluated using power Doppler US to reveal any areas of increased vascularity, and the results were compared with radiographic, endoscopic, or intraoperative findings. Whenever feasible, we also performed spectral analysis of blood flow revealed by power Doppler US, calculated its resistance index (RI), and analysed its characteristics, reproducibility, and relationship with biochemical and clinical variables (Crohn's disease activity index, disease duration, location, and abdominal complications). Results: Power Doppler US revealed vascularity in all of the internal fistulae that where subsequently confirmed by diagnostic procedures. In the case of intra-abdominal abscesses in the vicinity of the fistula, vascular signals were detected mostly around and not within the lesions. The intensity and distribution of the signals differed within the fistulae tracks and had only slight day to day reproducibility; furthermore, there was no significant correlation with clinical or biochemical variables. Spectral analyses of blood flow within the fistulae revealed arterial flow in 96.7% of patients (median RI 0.715). RI was a more reproducible parameter and significantly correlated with clinical (r= 0.54) and biochemical activity (r= 0.56) of CD. It was also higher in fistulae complicated by abscesses. Conclusion: Power Doppler US can reveal the presence of vasculature within the wall of internal fistulae and therefore enhance grey scale US performance. The RI characteristics of blood flow within the fistulae are reproducible and correlate with biochemical and clinical disease activity.

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“…Given the high sensitivity of Power Doppler in detecting blood flow and its ability to clearly depict vessel boundaries, this imaging modality offers some advantages over color Doppler, particularly where small vessels, vessels with decreased blood flow, vessels coursing at unfavorable insonation angles, or vessel branches are concerned (MARTINOLI et al, 1998).…”

Section: Literature Reviewmentioning

confidence: 99%

Power Doppler sonography in the assessment of neovascularization following surgical fracture repair in sheep: case report

Baccarelli

Paretsis

Lhamas

et al. 2017

Braz. J. Vet. Res. Anim. Sci.

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A ultrassonografia é técnica de imagem segura e não invasiva que fornece imagens dinâmicas. O Power Doppler é modalidade ultrassonográfica que permite a visualização de vasos sanguíneos sem depender de intensidade e direção de fluxo. Admitiu-se no Hospital Veterinário da FMVZ-USP um ovino fêmea, de raça Ile de France, com um ano de idade e apresentando fratura completa de tíbia em bisel. O animal foi submetido à anestesia inalatória para a realização de osteossíntese com placa bloqueada de 3,5 mm. Durante o período pós-operatório foram realizadas imagens de ultrassonografia Power Doppler para a avaliação da neovascularização ao longo do processo de regeneração óssea. Entre o 14º e o 21º dia do período pós-operatório, identificou-se a presença de vasos sanguíneos neoformados, que apresentaram sinais de regressão nas avaliações subsequentes (realizadas no 28º e no 35º dia pós-operatório). A ultrassonografia Power Doppler mostrou-se eficiente na detecção precoce de vasos sanguíneos neoformados na região da fratura no período pós-operatório, sendo um exame não invasivo, que não gerou estresse para o animal e que pode estar relacionado ao sucesso no reparo ósseo da tíbia do animal submetido à osteossíntese.

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Power Doppler sonography: clinical applications

Cited by 96 publications

References 40 publications

Hyperemia in Plantar Fasciitis Determined by Power Doppler Ultrasound

Hyperemia in Plantar Fasciitis Determined by Power Doppler Ultrasound

The vascularity of internal fistulae in Crohn's disease: an in vivo power Doppler ultrasonography assessment

Power Doppler sonography in the assessment of neovascularization following surgical fracture repair in sheep: case report

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