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Power Doppler sonography

Previous studies of tumor blood vessel response to radiation have relied upon the clearance of Xe and the quantity of RBCs (Cr-59) within tumors following treatment with radiation (3,6,8). Currently available methods allow direct, longitudinal observation of tumor blood volume and blood flow (10,11). More recent models include the tumor vascular window (11), power Doppler sonography (10), and histologic evaluation of tumor blood vessels (12,13). These models permit characterization of the dose-dependent response in tumor blood vessels. [Pg.360]

Power Doppler sonography displays the amplitude of the Doppler signal but lacks the velocity and directional information present in frequency-based color Doppler sonography (10). However, power Doppler is more sensitive in the depiction of tumor vascularity (14-16), specifically within small tumor vessels (10,17). The hind limb tumor model and power Doppler can be utilized to measure the response of tumor blood vessels to radiation, providing longitudinal assessment of microvascular response within the same tumor without the need to section tumors for histology at various time intervals. [Pg.360]

Sumi, S., Yamashita, Y., Mitsuzaki, K., Yamamoto, H., Urata, J., Nishi-haru, T., Takahashi, M. Power Doppler Sonography assessment of tumor recurrence after chemoembolization therapy for hepatocellular carcinoma. Amer. J. Roentgenol. 1999 172 67—71... [Pg.140]

Golli, M., Kriaa, S., Said, M., Belguith, M., Zbidi, M., Saad, J., Nouri, A., Ganouni, A. Intrahepatic spontaneous portosystemic venous shunt value of color and power Doppler sonography. X. Clin. Ultrasound 2000 28 47-50... [Pg.746]

Gritzmann, N. Small hepatocellular carcinomas in patients with liver cirrhosis potential and limitations of contrast-enhanced power Doppler sonography. Eur. X Gastroenterol. Hepatol. 2003 15 881-883... [Pg.803]

Imamura, M., Shiratori, Y., Shiina, S., Sato, S., Obi, S., Okudaira, T., Teratani, T., Kato, N., Akahane, M., Ohtomo, K., Minami, M., Omata, M. Power Doppler sonography for hepatocellular carcinoma factors affecting the power Doppler signals of the tumors. Liver 1998 18 427-433... [Pg.803]

In addition to B-mode sonography flow-depended techniques such as color-coded duplex sonography or power Doppler sonography can be employed in liver imaging. Although these techniques are used in most cases to obtain information about hepatic vasculature, it has been reported that they also provide additional information on the characterization of focal liver lesions based on their perfusion patterns [39]. [Pg.16]

Heyne R, Rickes S, Bock P, Schreiber S, Wermke W, Lochs H (2002) Non-invasive evaluation of activity in inflammatory bowel disease by power Doppler sonography. Z Gastroenterol 40 171-175... [Pg.83]

Bowel Sonography (B-Mode, Doppler and Power Doppler Sonography) 169... [Pg.169]

No objective parameters exist permitting definition of the type of echo structure or flow patterns (such as the Hounsfield scale in CT). The vascular flow signal is often too weak because of beam attenuation or signal absorption or distortion and power Doppler sonography fails to assess blood flow direction (Table 20.2). [Pg.170]

Table 20.2. Characteristics of power Doppler sonography. (From Forsberg and Goldberg 1997)... Table 20.2. Characteristics of power Doppler sonography. (From Forsberg and Goldberg 1997)...
Intramural flow signals in affected intestinal loops (power Doppler sonography) 5 of 26 (20%) 11 of 22 (50%) 0.052... [Pg.175]

Incesu et al. (2004) demonstrated that power Doppler sonography has a sensitivity of 74% and contrast-enhanced power Doppler US a sensitivity of 100%, respectively, in the diagnosis of acute appendicitis (Table 20.5). In their study, feeding vessels of all inflamed appendices were visible. They concluded... [Pg.176]

Table 20.5. Power Doppler sonography (PD US) and contrast-enhanced power Doppler sonography (CEPD US) correlation in 50 patients with suspected appendicitis (%) (From Incesu... Table 20.5. Power Doppler sonography (PD US) and contrast-enhanced power Doppler sonography (CEPD US) correlation in 50 patients with suspected appendicitis (%) (From Incesu...
Fig. 20.2. Descending colon of a patient with acute graft-vs-host disease, a B-mode sonography shows increased motility and loss of bowel wall stratification, b Power Doppler sonography shows increased bowel wall perfusion, c Sixteen seconds and d 37 sec after injection of SonoVue contrast enhancement with microbubbles mainly in the submucosal layer, which was formerly not detectable... Fig. 20.2. Descending colon of a patient with acute graft-vs-host disease, a B-mode sonography shows increased motility and loss of bowel wall stratification, b Power Doppler sonography shows increased bowel wall perfusion, c Sixteen seconds and d 37 sec after injection of SonoVue contrast enhancement with microbubbles mainly in the submucosal layer, which was formerly not detectable...
Schulte-Altedorneburg G, Demharter J, Linn R et al (2003) Does ultrasound contrast agent improve the diagnostic value of colour and power Doppler sonography in superficial lymph node enlargement Eur J Radiol 48 252-257 Smith MD, Elion JL, McClure RR et al (1984) Left heart opacification with peripheral venous injection of a new saccharide echo contrast agent in dogs. J Am Coll Cardiol 13 1622-1628... [Pg.179]

Newman JS, Adler RS, Rubin JM (1997) Power Doppler sonography use in measuring alterations in muscle blood volume after exercise. AJR Am J Roentgenol 168 1525-1530 Noonan TJ, Garrett WE Jr (1992) Injuries at the myotendi-nous junction. Clin Sports Med 11 783-806 Noonan TJ, Garrett WE Jr (1999) Muscle strain injury diagnosis and treatment. J Am Acad Orthop Surg 7 262-269... [Pg.58]

Chiou RK, Alberts GL, Pomeroy BD et al (1999) Study of cav-ernosal arterial anatomy using color and power Doppler sonography impact on hemodynamic parameter measurement. J Urol 162 358-360... [Pg.38]

Chen J, Greenstein A, Matzkin H (2000) Is a second injection of vasoactive medication necessary during color duplex Doppler evaluation of young patients with veno-occlusive erectile dysfunction Urology 55 927-930 Chiou RK, Alberts GL, Pomeroy BD et al (1999) Study of cav-ernosal arterial anatomy using color and power Doppler sonography impact on hemodynamic parameter measurement. J Urol 162 358-360... [Pg.53]

Power Doppler sonography versus DMSA scintigraphy in acute pyelonephritis and in prediction of renal scarring. J Nucl Med 43 27-32... [Pg.16]

Kim AY, Kim SH, Kim YJ et al (1999) Contrast-enhanced power Doppler sonography for the differentiation of cystic renal lesions Preliminary study. JUM 18 581-588 Kissane JM (1990) Renal cysts in pediatric patients a classification and overview. Pediatr Nephrol 4 69-70 Kjessler B, Johansson SOG, Sherman MS et al (1975) Alpha-fetoprotein in antenatal diagnosis of congenital nephrosis. Lancet 1 123-124... [Pg.209]

Churchill-Livingstone, New York Babcock DS, Patriquin H, LaFortune M, Duazat M (1996) Power Doppler sonography basic principles and clinical applications in children. Pediatr Radiol 26 109-115 Bansal VK, Beto JA (1997) Treatment of lupus nephritis a metaanalysis of clinical trials. Am J Kidney Dis 29 193-199... [Pg.379]

Newman JS, Adler RS (1998) Power Doppler sonography applications in musculoskeletal imaging. Semin Musculoskeletal Radiol 2 331-3340... [Pg.94]

Clevert DA, Rupp N, Reiser M et al (2005) Improved diagnosis of vascular dissection by ultrasound B-flow a comparison with color-coded Doppler and power Doppler sonography. Eur Radiol 15 342-347... [Pg.134]

Breidahl WH, Newman JS, Tajanovic MS et al (1996) Power Doppler sonography in the assessment of musculoskeletal fluid collections. AJR Am J Roentgenol 166 1443-1446 Brigido MK, Fessell DP, Jacobson JA et al (2005) Radiography and US of os peroneum fractures and associated peroneal tendon injuries initial experience. Radiology 237 235-241... [Pg.181]

Newman JS, Laing TJ, McCarthy CJ et al (1996) Power Doppler sonography of synovitis assessment of therapeutic response. Preliminary observation. Radiology 198 582-584 Nisolle JF, Blouard E, Baudrez V et al (1999) Subacromial-sub-deltoid lipoma arborescens associated with a rotator cuff tear. Skeletal Radiol 28 283-285... [Pg.184]

Wallny T, Wagner UA, Prange S et al (1999) Evaluation of chronic tears of the rotator cuff by ultrasound a new index. J Bone Joint Surg Br 81 675-678 Wamser G, Bohndorf K, Vollert K et al (2003) Power Doppler sonography with and without echo-enhancing contrast agent and contrast-enhanced MRI for the evaluation of rheumatoid arthritis of the shoulder joint differentiation between synovitis and joint effusion. Skeletal Radiol 32 351-359... [Pg.331]

See other pages where Power Doppler sonography is mentioned: [Pg.373]    [Pg.196]    [Pg.753]    [Pg.53]    [Pg.72]    [Pg.72]    [Pg.169]    [Pg.170]    [Pg.174]    [Pg.175]    [Pg.176]    [Pg.177]    [Pg.179]    [Pg.291]    [Pg.53]    [Pg.59]    [Pg.42]    [Pg.91]    [Pg.91]    [Pg.94]   
See also in sourсe #XX -- [ Pg.360 ]



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