Value of magnetic resonance venography and computed tomographic venography in lower extremity chronic venous disease

Arnoldussen, Carsten W. K. P.; Graaf, Rick de; Wittens, Cees H. A.; Haan, Michiel W. de

doi:10.1177/0268355513477785

Cited by 65 publications

(35 citation statements)

References 21 publications

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“…the maximal degree of narrowing 6 . CTV, MRV and phlebography can all define vein morphology and flow characteristics when restricted flow is suspected especially in the pelvic or abdominal veins [7][8][9] . The ancient phlebography and the IVUS techniques are complementary used for preplanning endovascular venous interventions [10][11][12] .…”

Section: Introductionmentioning

confidence: 99%

Blood flow velocity in the popliteal vein using transverse oscillation ultrasound

et al. 2016

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Chronic venous disease is a common condition leading to varicose veins, leg edema, post-thrombotic syndrome and venous ulcerations. Ultrasound (US) is the main modality for examination of venous disease. Color Doppler and occasionally spectral Doppler US (SDUS) are used for evaluation of the venous flow. Peak velocities measured by SDUS are rarely used in a clinical setting for evaluating chronic venous disease due to inadequate reproducibility mainly caused by the angle dependency of the estimate. However, estimations of blood velocities are of importance in characterizing venous disease. Transverse Oscillation US (TOUS), a non-invasive angle independent method, has been implemented on a commercial scanner. TOUS's advantage compared to SDUS is a more elaborate visualization of complex flow. The aim of this study was to evaluate, whether TOUS perform equal to SDUS for recording velocities in the veins of the lower limbs. Four volunteers were recruited for the study. A standardized flow was provoked with a cuff compressiondecompression system placed around the lower leg. The average peak velocity in the popliteal vein of the four volunteers was 151.5 cm/s for SDUS and 105.9 cm/s for TOUS (p <0.001). The average of the peak velocity standard deviations (SD) were 17.0 cm/s for SDUS and 13.1 cm/s for TOUS (p <0.005). The study indicates that TOUS estimates lower peak velocity with improved SD when compared to SDUS. TOUS may be a tool for evaluation of venous disease providing quantitative measures for the evaluation of venous blood flow.

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Section: Introductionmentioning

confidence: 99%

Blood flow velocity in the popliteal vein using transverse oscillation ultrasound

et al. 2016

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“…Abnormalities such as vein obstructions can also be identified by duplex ultrasound and CT scanning, in addition to MR venography (19). The sequences developed for oxygenated blood provide the best visualization in MR angiography.…”

Section: Discussionmentioning

confidence: 99%

A Customizable Multimodality Imaging Compound That Relates External Landmarks to Internal Structures

Semework

2015

J. Nucl. Med. Technol.

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Numerous research and clinical interventions, such as targeting drug deliveries or surgeries and finding blood clots, abscesses, or lesions, require accurate localization of various body parts. Individual differences in anatomy make it hard to use typical stereotactic procedures that rely on external landmarks and standardized atlases. For instance, it is not unusual to incorrectly place a craniotomy in brain surgery. This project was thus performed to find a new and easy method to correctly establish the relationship between external landmarks and medical scans of internal organs, such as specific regions of the brain. Methods: This paper introduces an MRI, CT, and radiographically visible compound that can be applied to any surface and therefore provide an external reference point to an internal (eye-invisible) structure. Results: Tested on nonhuman primates and isolated brain scans, this compound showed up with the same color in different scan types, making practical work possible. Conventional, and mostly of specific utility, products such as contrast agents were differentially colored or completely failed to show up and were not flexible. Conclusion: This compound can be customized to have different viscosities, colors, odors, and other characteristics. It can also be mixed with hardening materials such as acrylic for industrial or engineering uses, for example. Laparoscopy wands, electroencephalogram leads, and other equipment could also be embedded with or surrounded by the compound for ease in 3-dimensional visualizations. A pending U.S. patent endorses this invention.

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“…From a medical point of view, a diagnostic work-up of varicose veins is recommended and invasive treatment possibilities should be considered in the following situations [16]: The diagnostic workup includes a clinical assessment complemented by a duplex ultrasound investigation [17] as described in detail below. Other modalities such as conventional venography, magnetic resonance venography, computerized tomography venography or intravascular ultrasound (IVUS) are usually reserved for special cases [18][19][20][21] and will not further be elucidated in this review.…”

Section: Diagnostic Workupmentioning

confidence: 99%

Clinical and duplex ultrasound evaluation of lower extremities varicose veins – a practical guideline

Spinedi

Brož

Engelberger

et al. 2017

Vasa

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Summary:Lower extremities varicose veins are among the most frequent diseases in the general population. They can cause complaints with a deterioration of the quality of life and are associated with potentially threatening clinical conditions such as chronic venous ulceration, haemorrhage from ruptured varicose veins, and venous thromboembolism. An accurate diagnostic work-up is crucial to confi rm the presence and the extension of the venous problem, in order to obtain an optimal management of the condition. In the past years, great efforts have been made to reach an international consensus on the terminology, the symptomatology, the classifi cation, and the duplex ultrasound examination of lower extremities varicose veins. Mainly guided by these consensus documents, the present article describes the diagnostic work-up of lower extremities varicose veins, based on a careful medical history, physical examination, and duplex ultrasound examination.

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Value of magnetic resonance venography and computed tomographic venography in lower extremity chronic venous disease

Cited by 65 publications

References 21 publications

Blood flow velocity in the popliteal vein using transverse oscillation ultrasound

Blood flow velocity in the popliteal vein using transverse oscillation ultrasound

A Customizable Multimodality Imaging Compound That Relates External Landmarks to Internal Structures

Clinical and duplex ultrasound evaluation of lower extremities varicose veins – a practical guideline

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