Results 261 to 270 of about 40,683 (297)

Impact of helical computed tomography in clinically evident appendicitis

Emergency Medicine Journal, 2008
Objectives: To determine the utility of multidetector computed tomography (MDCT) in patients with clinically evident acute appendicitis and to compare the test characteristics of overall clinical impression, Alvarado scores, and MDCT in suspected appendicitis.
K, Kim, J E, Rhee, C C, Lee, K S, Kim, J H, Shin, M J, Kwak, J H, Kim, G J, Suh, S K, Hahn, A J, Singer   +9 more
openaire   +2 more sources

The cause of the artifact in 4‐slice helical computed tomography

Medical Physics, 2004
The causes of the image artifacts in a 4‐slice helical computed tomography have been discussed as follows: (1) changeover in pairs of data used in z interpolation, (2) sampling interval in z, and (3) the cone angle. This study analyzes the first two causes of the artifact and describes how the current algorithm [K. Taguchi and H.
Katsuyuki, Taguchi, Hiroshi, Aradate, Yasuo, Saito, Ilan, Zmora, Kyung S, Han, Michael D, Silver   +5 more
openaire   +2 more sources

[Unenhanced helical computed tomography in the diagnosis of choledocholithiasis].

Tanisal ve girisimsel radyoloji : Tibbi Goruntuleme ve Girisimsel Radyoloji Dernegi yayin organi, 2004
PubMed ...
Duşdurova I., Danaci M., Bektaş A., Oztürk A., Belet U., Yalin T.   +5 more
openaire   +2 more sources

[Spiral (helical) computer tomography].

Casopis lekaru ceskych, 1998
The introduction of spiral (helical) computed tomography (CT) has revolutionized the way established body CT examination are performed and has created new examinations as CT angiography. The production of overlapping images from single short X-ray exposure, the minimization of motion artefact and the suppression of respiratory misregistration have all ...
openaire   +1 more source

Helical Computed Tomography of the Liver: Techniques, Applications and Pitfalls

Endoscopy, 1997
Helical computed tomography (CT) of the liver has greatly improved both the accuracy and characterization of focal liver masses. This paper focuses on specific techniques for helical CT, including dual helical CT (acquisition of scans during both the arterial and portal venous phases of contrast enhancement), high-dose helical CT, delayed iodine CT ...
openaire   +2 more sources

High-helical-pitch, cone-beam computed tomography

Physics in Medicine and Biology, 1998
The object of a helical, cone-beam computed tomography, HCBCT, system is faster scan times for the volume of interest for a patient. The maximum helical-pitch that still produces good quality images limits the reduction in scan time. Although this is a three-dimensional problem, an extension of the completeness condition for a two-dimensional fan-beam ...
openaire   +2 more sources

HELICAL (SPIRAL) COMPUTED TOMOGRAPHY

Gastroenterology Clinics of North America, 1995
Robert K. Zeman, Paul M. Silverman, Cirrelda Cooper, David I. Weltman, Susan M. Ascher, Richard H. Patt   +5 more
openaire   +1 more source

Helical computed tomography in the diagnosis of ureteric colic

BJU International, 2000
R C, Smith, D M, Coll
openaire   +2 more sources

Helical Computed Tomography for Diagnosing Pulmonary Embolism

Annals of Internal Medicine, 2000
J R, Mayo, E M, Baile, P D, Pare
openaire   +2 more sources

Helical computed tomography for lung cancer screening

Medical Journal of Australia, 2003
Mark, Elwood, Donald A, Campbell, Margaret P, de Campo   +2 more
openaire   +2 more sources