B-Flow und kontrastmittelverstärkter Power Mode mit Optison® - Präoperative Diagnostik der hochgradigen Stenose der A. carotis interna

Jung, Ernst-Michael; Kubale, R.; Clevert, D.‐A.; Lutz, Robert J.; Rupp, N

doi:10.1055/s-2002-19548

Cited by 17 publications

(5 citation statements)

References 11 publications

(12 reference statements)

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“…Flow direction is marked as dots or dashes. One major advantage is the lack of color blooming or aliasing artifacts [6][7][8][9]. In our studies, both B-flow modes were used in all cases.…”

Section: Methodsmentioning

confidence: 99%

Improved diagnosis of vascular dissection by ultrasound B-flow: a comparison with color-coded Doppler and power Doppler sonography

et al. 2004

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The purpose was to evaluate the diagnostic results of different ultrasound techniques: color-coded Doppler (CCD), power Doppler (PD) and B-flow in the diagnosis of vascular dissection. Findings from 68 patients with arterial dissection proven either by vascular ultrasound (US) or by magnetic resonance angiography (MRA), computed tomographic angiography (CTA) or intra-arterial digital subtraction angiography (DSA) were reviewed in retrospect. The study compared results from three different modes of ultrasound, i.e., CCD, PD and B-flow, in dissections of the carotid artery (n=11), of the vertebral artery (n=9), of the abdominal aorta (n=13), of the iliac artery (n=12) and of the femoral artery (n=23). MRA, CTA and DSA were considered as reference standard. The sensitivity of CCD for detecting all dissections was 78%, 84% for the PD and 98% for B-flow. For carotid artery dissection, the sensitivity of CCD, PD and B-flow was 82, 91 and 98%, for the vertebral artery 67, 78 and 98%, for the abdominal aorta 85, 85 and 98%, for the iliac artery 67, 75 and 98%, for the femoral artery 83, 87 and 98%, respectively. Intima flaps, fissures of membranes and residual flow within the true and false lumen were better detected by B-flow than by CCD and PD. The lack of angle dependence of the US probe in B-flow made the examination procedure easier. In the cine mode of B-flow, the pulse synchronic movement of the membrane was more apparent than in any other imaging method. With B-flow, accuracy for the diagnosis of arterial dissection is improved compared to CCD and PD. Flow within the true and false lumen, low-echo thrombi, intramural hematoma and even movements of the dissection membrane are clearly distinguished.

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“…Flow direction is marked as dots or dashes. One major advantage is the lack of color blooming or aliasing artifacts [6][7][8][9]. In our studies, both B-flow modes were used in all cases.…”

Section: Methodsmentioning

confidence: 99%

Improved diagnosis of vascular dissection by ultrasound B-flow: a comparison with color-coded Doppler and power Doppler sonography

et al. 2004

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“…Der Stenosegrad, der für den Zeitpunkt der Intervention wichtig ist, kann nicht immer zuverlässig sonographisch beurteilt werden, so dass teilweise eine Diagnostik durch die i. a. DSA notwendig wird. In unserem Institut werden bei Gefäßultra-schalluntersuchungen bereits routinemäßig auch die verschiedenen noch neuartigen Modalitäten einer sonographischen Flussdetektion mit dem B-Flow eingesetzt [18,19]. Erste Untersuchungen mit dem B-Flow zur Beurteilung hämodynamisch wirksamer Stenosen von Hämodialyseshunts wurden mit der FKDS und der i. a. DSA verglichen.…”

Section: Materials Und Methodeunclassified

B-Flow zur verbesserten sonographischen Beurteilung von Dialyse-Shunt-Stenosen

Jung¹,

Kubale²,

Clevert³

et al. 2004

Fortschr Röntgenstr

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ZusammenfassungZiel: Es sollte überprüft werden, inwieweit die noch neue Technik des B-Flow eine verbesserte sonographische Flusserfassung bei stenosierten Hämodialyseshunts ermöglicht. Material und Methode: Bei 50 Patienten (im Mittel 58 Jahre) mit Brescia-Cimino-Shunts (27 radiale, 23 cubitale A-V-Fisteln) wurden prospektiv Untersuchungen mit der i. a. DSA und dem Gefäßultra-schall durchgeführt. Voraussetzung für die Untersuchungen waren ein Flussvolumen < 400 ml/min, eine vermutete hämodyna-misch relevante Stenose im Bereich der Anastomose oder der Shuntvenen. Die Ultraschalluntersuchungen erfolgten mit einem Multifrequenzschallkopf Purpose: To evaluate the new technique of B-flow ultrasound in assessing stenoses of hemodialysis fistulas. Materials and Methods: 50 patients (mean age 58 years) with Brescia-CiminoShunts (27 shunts of the radial and 23 of the cubital artery) were prospectively assessed with intraarterial DSA and vascular ultrasound by independent examiners. Eligibility for the study was a shunt-volume of less than 400 ml/min and an angiographically suspected hemodynamically significant stenosis of the anastomosis or of shunt veins. Sonography was performed with a multifrequency ultrasound probe (5 to 10 MHz, Logic 700, GE) using B-mode, color coded Doppler sonography (CCDS) and B-flow technique. Results: Anastomotic stenosis and stenosis of the shunt veins were equally distributed, found in 25 patients each. The measurements of the residual lumen of the 25 anastomotic stenoses were 1.47 to 3.43 mm (average: 2.3 mm) for intraarterial DSA, 1.57 to 3.73 mm (average: 2.6 mm) for B-mode ultrasound, 1.97 to 4.17 mm (average: 2.9 mm) for CCDS, 1.43 to 3.47 mm (average: 2.3 mm) for B-flow technique in the brightness mode and 1.6 to 3.47 mm (average: 2.4 mm) for B-flow technique in the B-mode. The brightness mode of the B-flow correlated best with intraarterial DSA (r=0.994), with a significantly lower correlation between CCDS and intraarterial DSA. B-flow displays less vascular distortion within the stenosis and fewer flow artifacts. Even in angulated stenoses, the detected intra-and poststenotic flow was markedly less angle-dependent in comparison with CCDS. B-flow clearly facilitates the visualization of hypoechoic plaques and intima proliferation. Furthermore, excentric cicatricial stenoses, intima flaps or hypoechoic thrombi, which were not seen with DSA or B-mode, showed improved visualization in

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“…Neue Entwicklungen auf dem Gebiet der Ultraschallkontrastmittel versprechen jedoch eine Verbesserung in der Diagnostik von Karotisstenosen, insbesondere bei stark verkalkten Plaques und in der Differenzierung von Pseudookklusionen und Verschlüssen [29]. Durch den 3D-Charakter der dynamischen MR-Angiographie und entsprechende Nachbearbeitungssoftware (z.…”

Section: Diskussionunclassified

Graduierung von Karotisstenosen mittels hochaufgelöster dynamischer MR-Angiographie im Vergleich zur intraarteriellen DSA. Können Stenosen über 70 % zuverlässig erkannt werden?

Aschenbach

Eger

Basche

et al. 2004

Fortschr Röntgenstr

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B-Flow und kontrastmittelverstärkter Power Mode mit Optison® - Präoperative Diagnostik der hochgradigen Stenose der A. carotis interna

Cited by 17 publications

References 11 publications

Improved diagnosis of vascular dissection by ultrasound B-flow: a comparison with color-coded Doppler and power Doppler sonography

Improved diagnosis of vascular dissection by ultrasound B-flow: a comparison with color-coded Doppler and power Doppler sonography

B-Flow zur verbesserten sonographischen Beurteilung von Dialyse-Shunt-Stenosen

Graduierung von Karotisstenosen mittels hochaufgelöster dynamischer MR-Angiographie im Vergleich zur intraarteriellen DSA. Können Stenosen über 70 % zuverlässig erkannt werden?

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