Results 281 to 290 of about 593,887 (345)

Spiral computed tomography for biliary dilatation

Journal of Pediatric Surgery, 1995
Spiral computed tomography (SCT), which consists of rapid volumetric data acquisition and planar image display, was performed on 12 patients with biliary dilatation after excisional procedure. The technique was evaluated for image quality and impact on clinical practice. All patients safely underwent SCT scanning after intravenous cholangiography (IVC)
Y, Hamada, M, Sato, T, Sanada, M, Tsuji, M, Kogata, K, Hioki   +5 more
openaire   +2 more sources

Optimal pitch in spiral computed tomography

Medical Physics, 1997
The focus of this paper is to analytically optimize spiral/helical computed tomography (CT) protocols based on a simplified imaging model. Spiral CT was approximately modeled as follows: Using the half‐scan raw data interpolation method, the variance of the spiral CT slice sensitivity profile is equal to the sum of squared detector collimation divided ...
G, Wang, M W, Vannier
openaire   +2 more sources

Spiral Computed Tomography

2017
X-ray computed tomography (CT) is a medical imaging method, where the patient is placed on the CT table and an x-ray tube rotates around the body and sends x-rays through the body. Those x-rays experience a varying attenuation along their way depending on the body part they are transversing.
Erich Sorantin, Sabine Weissensteiner
openaire   +1 more source

Predicting Postoperative FEV1 Using Spiral Computed Tomography

Academic Radiology, 2010
Lung resection for primary bronchogenic carcinoma in the setting of chronic obstructive pulmonary disease often requires a detailed assessment of lung function to avoid perioperative complications and long-term disability. The aim of this study was to test the hypothesis that a novel technique of spiral computed tomographic (CT) subtraction imaging ...
Cory M, Yamashita, Jonathan, Langridge, Christopher A, Hergott, Richard I, Inculet, Richard A, Malthaner, Michael S, Lefcoe, Sanjay, Mehta, Jeffery L, Mahon, Ting Y, Lee, David G, McCormack   +9 more
openaire   +2 more sources

Spiral computed tomography for bilioenteric anastomotic stricture

Pediatric Surgery International, 1998
Spiral computed tomography scanning after intravenous cholangiography (IVC-SCT) was used to assess the anatomy of the biliary tree and anastomosis in a 7-year-old girl with recurrent cholangitis 5 years after surgical excision of a choledochal cyst.
Y, Hamada, M, Sato, K, Takada, K, Hioki
openaire   +2 more sources

System performance of multislice spiral computed tomography

IEEE Engineering in Medicine and Biology Magazine, 2000
Multislice spiral CT offers many new possibilities for clinical CT imaging. Drastically increased scan speeds and z-resolution, respectively, as well as applications such as cardiac CT that have become feasible for the first time in routine clinical use.
T O, Fuchs, M, Kachelriess, W A, Kalender   +2 more
openaire   +2 more sources

Spiral computed tomography before and after cricothyroid approximation

Clinical Otolaryngology and Allied Sciences, 2000
Cricothyroid approximation raises the vocal pitch by simulating the contraction of the cricothyroid muscle with sutures. The aim of this study was to determine the role of spiral computed tomography (CT) in patients scheduled for cricothyroid approximation.
D, Pickuth, S, Brandt, K, Neumann, A, Berghaus, R P, Spielmann, S H, Heywang-Köbrunner   +5 more
openaire   +2 more sources

Image quality and dose in spiral computed tomography

European Radiology, 1996
Image quality and dose produced by a spiral CT with various pitch values were investigated on the basis of test-object images and measurements of CT dose indexes. No major difference in image quality or dose was observed when comparing sequential and spiral mode acquisition with a pitch of one.
F R, Verdun, R A, Meuli, F O, Bochud, C, Imsand, S, Raimondi, P, Schnyder, J F, Valley   +6 more
openaire   +2 more sources

[Defecography by spiral computed tomography].

La Radiologia medica, 1999
We investigated the possible role of helical CT defecography in pelvic floor disorders by comparing our results with those of conventional defecography.Our series consisted of 90 patients, namely 62 women and 28 men, ranging in age 24-82 years. They were all submitted to conventional defecography, and 18 questionable cases were also studied with ...
Ferrando R, Fiorini G, Beghello A, Tornago S, Cicio G, DERCHI, LORENZO, Consigliere M, Resasco M.   +7 more
openaire   +2 more sources

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
openaire   +2 more sources