Results 211 to 220 of about 366,261 (263)
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Computed Tomography Scans on Paper
Radiology, 1978A method to display CT scans on paper has been developed using an electrostatic printer. The scans are displayed in threshold and gray level form, allowing the radiologist to utilize the CT values in the analysis of the scan. This system also has logistic, storage, and economic advantages.
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Computational Confocal Scanning Tomography
Frontiers in Optics 2009/Laser Science XXV/Fall 2009 OSA Optics & Photonics Technical Digest, 2009We demonstrate a technique to perform computed tomographic reconstruction of a refractive and attenuative sample using a confocal laser scanning microscope that employs a spatial heterodyne to perform coherent detection of the entire aperture signal.
Keith Dillon, Yeshaiahu Fainman
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Computer analysis of computed tomography scans of the lung: a survey
IEEE Transactions on Medical Imaging, 2006Current computed tomography (CT) technology allows for near isotropic, submillimeter resolution acquisition of the complete chest in a single breath hold. These thin-slice chest scans have become indispensable in thoracic radiology, but have also substantially increased the data load for radiologists. Automating the analysis of such data is, therefore,
Ingrid Sluimer +3 more
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Parathyroid scanning by computed tomography.
Radiology, 1983Conventional parathyroid computed-tomographic scanning detected 51% (29/57) of tumors averaging 1.5 X 1.0 X 0.8 cm in size at surgery. Forty-six per cent (7/43) of the scans were uninterpretable due to shoulder-streak artifacts. Using a specially designed patient positioning device and a new imaging protocol involving dynamic scanning and the ...
D D, Stark +3 more
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Computed Tomography Scan in the Early Detection of Silicosis
American Review of Respiratory Disease, 1991Abstract We evaluated the ability of both the conventional and high resolution computed tomography (CCT and HRCT, respectively) scans of the thorax to detect early silicosis in subjects exposed to silica dust in the mines and foundries of Québec for an average of 29 ± 2 yr.
R, Bégin +3 more
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Neck and Mediastinal Angiography by Computed Tomography Scan
Radiology, 1977CT scanning of the neck and upper mediastinum is a valuable tool in the differential diagnosis of soft-tissue tumors. Visualization of the major vessels in the neck, which aids in the study, can be accomplished by a rapid intravenous drip infusion technique during the actual scanning, a new approach to contrast enhancement.
B L, Carter, S B, Ignatow
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Diagnosis of anemia on computed tomography scans of the thorax
Journal of Computed Tomography, 1988Scans of 14 patients with hemoglobin levels of 7.6 to 10.2 grams/deciliter (gm/dL) were positive for the diagnosis of anemia. All demonstrated the interventricular septum and ascending and descending aortic walls. Scans of 23 patients with hemoglobin levels of 10.5 to 12.8 gm/dL were positive for the diagnosis of anemia in 11 and negative in 12.
H L, Corcoran, D E, Cook, A V, Proto
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Computed Tomography Scanning for the Diagnosis of Perforated Appendicitis
The American Surgeon, 1999The optimal initial treatment for perforated appendicitis may be nonoperative. For this reason it is important to be able to reliably distinguish between acute and perforated appendicitis. CT scanning has been shown to be highly accurate for the diagnosis of appendicitis, but it has not been specifically evaluated for perforated appendicitis.
D, Oliak +4 more
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Computed tomography scanning with simultaneous patient translation
Medical Physics, 1990This paper deals with methods of reducing the total time required to acquire the projection data for a set of contiguous computed tomography (CT) images. Normally during the acquisition of a set of slices, the patient is held stationary during data collection and translated to the next axial location during an interscan delay.
C R, Crawford, K F, King
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Computed tomography scanning of the thorax.
British journal of hospital medicine, 1993Although the chest radiograph remains the initial imaging study in patients with intrathoracic pathology, computed tomography has become useful in the early detection and evaluation of all aspects of lung, mediastinal, pleural and chest wall disease. High resolution computed tomography has particular advantages in the characterization of parenchymal ...
I, Mootoosamy, R H, Reznek
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