Results 261 to 270 of about 45,533 (303)

Spiral CT during arterial portography.

RadioGraphics, 1996
Spiral computed tomography (CT) performed during arterial portography offers several advantages compared with portographic studies based on conventional CT technique. Because all hepatic images are derived from a volume data set acquired during a single 24-32-second breath hold timed to coincide with the phase of peak hepatic enhancement, motion ...
A R, Lupetin, B A, Cammisa, I, Beckman, N, Dash, M B, Khoury, P M, Kiproff, R S, McKenzie   +6 more
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Endovascular trophoblast and spiral artery remodeling

Molecular and Cellular Endocrinology, 2020
Spiral artery remodeling, which is indispensable for successful pregnancy, is accomplished by endovascular trophoblasts that move upstream along the arterial wall, replace the endothelium, and disrupt the muscular lining. This review outlines the possible factors that could regulate endovascular trophoblast differentiation and invasion.
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Spiral laminar flow in arteries?

The Lancet, 1991
Spiral blood-flow patterns in infrainguinal blood-vessels were observed at angioscopy in 54 patients who underwent peripheral vascular reconstruction; the endoluminal surface had spiral folds in 51 of 75 arteries examined. Spiral flow patterns, congruous with inherent endoluminal anatomical features, might more accurately represent blood-flow in ...
P A, Stonebridge, C M, Brophy
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Renal arterial stenoses: spiral CT angiography.

Radiology, 1993
To evaluate the role of spiral computed tomography (CT) in diagnosis of renal arterial stenoses.In 22 patients with suspected renovascular hypertension, spiral CT angiography of the renal arteries was compared with arterial digital subtraction angiography (DSA).
M, Galanski, M, Prokop, A, Chavan, C M, Schaefer, K, Jandeleit, J E, Nischelsky   +5 more
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Fibrinolysis in Decidual Spiral Arteries in Late Pregnancy

Thrombosis and Haemostasis, 1978
SummaryThe fibrinolytic activity of the intimal cells of decidual spiral arteries and the syncytium of placental villi was studied by electron microscopy in ten normal full-term human pregnancies using a modification of the fibrin slide technique.
B L, Sheppard, J, Bonnar
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Spiral CT of Bronchial Arteries in Chronic Thromboembolism

Journal of Computer Assisted Tomography, 1994
Computed tomography study of bronchial artery anatomy and evaluation of dilatation and tortuousity as indicators for pulmonary hypertension and surgical risk in patients with chronic thromboembolism were performed.We retrospectively reviewed contrast-enhanced, thin section spiral CT scans of 39 patients undergoing pulmonary thromboendarterectomy ...
H U, Kauczor, H C, Schwickert, E, Mayer, F, Schweden, H H, Schild, M, Thelen   +5 more
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Multislice spiral computed tomography angiography of mesenteric arteries

The Lancet, 2001
The introduction of multislice technology has improved and expanded the clinical applications of computed tomography angiography (CTA), and it is now possible to detect subtle vascular abnormalities. We optimised a high resolution CTA protocol to study the anatomy of mesenteric arteries with a multislice spiral CT scanner. We showed that multislice CTA
LAGHI, ANDREA, Riccardo Iannaccone, CATALANO, Carlo, PASSARIELLO, Roberto   +3 more
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Renal Artery Evaluation: Comparison of Spiral CT Angiography to Intra-arterial DSA

Journal of Vascular and Interventional Radiology, 1998
To assess the role of spiral computed tomographic angiography (CTA) in renal artery evaluation.The authors prospectively performed both CTA and intraarterial digital subtraction angiography (IA-DSA) in 50 consecutive patients (24 males and 26 females) who ranged between 9 and 77 years old (mean, 39.3 years), in whom renovascular hypertension was ...
T S, Kim, J W, Chung, J H, Park, S H, Kim, K M, Yeon, M C, Han   +5 more
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Coronary artery motion compensation in spiral CT

SPIE Proceedings, 2005
Because of motion artifacts, spiral Computer Tomography (CT) is not presently a widely useful diagnostic tool in cardiac imaging. There are two time scales in CT data acquisition. The first is the time-scale of a single projection which is roughly a half millisecond.
William J. Dallas, Theron W. Ovitt
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Spiral CT arterial portography of the liver.

Radiology, 1993
The enhancement characteristics of the liver, aorta, and hepatic vein were evaluated during computed tomography with arterial portography (CTAP) performed with spiral technique in 10 patients. The attenuation of the liver was nearly constant over the scanning interval (average attenuation, 168 HU +/- 16).
D A, Bluemke, E K, Fishman
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