Results 211 to 220 of about 821,133 (267)
Some of the next articles are maybe not open access.
Computed Tomography Standardization
Radiology, 1976Since the body of literature on computed tomography is growing rapidly, some universally acceptable expression for attenuation values should be adopted. In addition, there is controversy as to the manner of viewing CT scans of the torso: some prefer viewing from below, in the same orientation as conventional radiographs, while the authors prefer ...
R J, Alfidi, W J, Macintyre
openaire +2 more sources
Radiology, 1976
A method for obtaining coronal scans of the cranium is described in which a scanner with a tilting gantry is used. Computed coronal tomography is especially useful in the high convexity area and in the suprasellar and foramen magnum regions.
S B, Hammerschlag +2 more
openaire +2 more sources
A method for obtaining coronal scans of the cranium is described in which a scanner with a tilting gantry is used. Computed coronal tomography is especially useful in the high convexity area and in the suprasellar and foramen magnum regions.
S B, Hammerschlag +2 more
openaire +2 more sources
Neurosurgery, 1978
Emission computed tomography (CT) is a nuclear medicine visualization technique that yields an image of the distribution of a previously administered radionuclide in any desired transverse section of the body. Emission CT allows the safe, quantitative, three-dimensional measurement of regional radionuclide distribution in tissue.
openaire +2 more sources
Emission computed tomography (CT) is a nuclear medicine visualization technique that yields an image of the distribution of a previously administered radionuclide in any desired transverse section of the body. Emission CT allows the safe, quantitative, three-dimensional measurement of regional radionuclide distribution in tissue.
openaire +2 more sources
Intraoperative Computed Tomography
2010Intraoperative computed tomography (iCT) has gained increasing impact among modern neurosurgical techniques. Multislice CT with a sliding gantry in the OR provides excellent diagnostic image quality in the visualization of vascular lesions as well as bony structures including skull base and spine.
J C, Tonn +6 more
openaire +2 more sources
Quantitative computed tomography
Radiologic Clinics of North America, 2003Unlike dual x-ray absorptiometry and high-resolution CT scan and MR imaging techniques, which are largely restricted to the peripheral skeleton owing to radiation dose and signal-to-noise considerations, volumetric quantitative measures provide measures of cortical and trabecular volumetric bone mineral density, cross-sectional geometry, and estimates ...
openaire +2 more sources
Computerized Tomography, 1981
Abstract Computer localization systems utilize existing detectors. The detectors of second generation CT scanners are relatively few, and they must scan while moving longitudinally. Computer localization systems have therefore not been developed for second generation scanners.
W J, Russell +3 more
openaire +2 more sources
Abstract Computer localization systems utilize existing detectors. The detectors of second generation CT scanners are relatively few, and they must scan while moving longitudinally. Computer localization systems have therefore not been developed for second generation scanners.
W J, Russell +3 more
openaire +2 more sources
Positron Emission Tomography/Computed Tomography
Seminars in Nuclear Medicine, 2008Accurate anatomical localization of functional abnormalities obtained with the use of positron emission tomography (PET) is known to be problematic. Although tracers such as (18)F-fluorodeoxyglucose ((18)F-FDG) visualize certain normal anatomical structures, the spatial resolution is generally inadequate for accurate anatomic localization of pathology.
openaire +2 more sources
COMPUTED TOMOGRAPHY ANGIOGRAPHY
Neuroimaging Clinics of North America, 1996Spiral computed tomography angiography is a relatively new noninvasive technique capable of rapid imaging of the carotid artery. Computed tomography angiography usually is performed in a 30-second scan time and images iodinated contrast as it fills the vascular lumen.
openaire +2 more sources
Computed Tomography Exophthalmometry
Ophthalmic Surgery, Lasers and Imaging Retina, 2010Exophthalmometry is an important clinical tool used in evaluating many orbital diseases. The authors evaluated whether or not exophthalmometry readings obtained from computed tomography (CT) correlate with traditional Hertel measurements.
Matthew J, Hauck +2 more
openaire +3 more sources
Journal of Computer Assisted Tomography, 1981
A neutron-transmission computed tomography scanning system has been built for scanning biological materials. An oxygen filtered beam of 2.35 MeV neutrons was used for the measurements. The studies to date show that the interactions of these energy neutrons with samples simulating biological materials are more sensitive than X-rays to variations in the ...
R A, Koeppe +4 more
openaire +2 more sources
A neutron-transmission computed tomography scanning system has been built for scanning biological materials. An oxygen filtered beam of 2.35 MeV neutrons was used for the measurements. The studies to date show that the interactions of these energy neutrons with samples simulating biological materials are more sensitive than X-rays to variations in the ...
R A, Koeppe +4 more
openaire +2 more sources