Results 241 to 250 of about 348,005 (268)

Spread of activity in thick cortical slices

Brain Research, 1984
Slices of the hamster cerebral cortex 700-800 micron thick have been demonstrated to be viable when maintained in a bath perfused with oxygenated CSF at 30 ml/min. In such thick slices activity has been shown to spread over both hemispheres following stimulation of the corpus callosum; and seizure activity, suggestive of epilepsy, can be induced by the
J, Bagust, C, Herron, G A, Kerkut
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Slice thickness reduction by partial overlapping presaturation

Magnetic Resonance in Medicine, 1992
AbstractWe present a new approach to slice thickness reduction that does not require strengthening the selection gradient or increasing the RF pulse duration. The basis of the approach is to employ a thick slice and suppress a portion of its width, thereby forming a thin slice.
T, Matsuda, M, Doyle, G M, Pohost
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Cytokeratin demonstration in thick breast tissue slices

The Histochemical Journal, 1997
Tissue slices (500 to 1000 microns thick) of archival formalin-fixed, paraffin-embedded breast tissue were immunostained by a cytokeratin antibody (MNF116) using a streptavidin-biotin complex procedure. The technique requires prolonged exposure of tissue slices to the reagents. Use of the detergent Triton X-100 facilitated penetration of high molecular
J D, Davies, S H, Sharp, C N, Chinyama
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Slice‐thickness artifacts in gray‐scale ultrasound

Journal of Clinical Ultrasound, 1981
AbstractWe have become increasingly aware of the presence of a type of image artifact normally appearing in anechoic areas (eg, cyst, bladder, gallbladder) and giving the appearance of “sludge” or “debris.” These artifactual echoes may be caused by the fact that the finite width of the transducer beam pattern produces a finite thickness of the patient ...
A, Goldstein, B L, Madrazo
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Slice thickness measurements.

Journal of Ultrasound in Medicine, 1988
A new slice thickness test object is discussed, with results of feasibility tests using 13 transducers from six different commercial scanners presented. Both inplane beamwidth and slice thickness measurements could be easily performed and interpreted.
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CT quality assurance: Computer assisted slice thickness determination

Medical Physics, 1980
The precise slice geometry of a CT scanner is an important, albeit tedious to determine, characteristic. A series of computer programs have been developed to analyze the slice thickness insert of the AAPM phantom. Without operator assistance they generate the beam profiles and slice thicknesses at three points in the scan field.
N J, Schneiders, S C, Bushong
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Effects of tomographic motion, slice thickness, and object thickness on film density

Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontology, 1996
The experiment used the computer-aided CommCat model IS 2000 tomographic machine (Imaging Sciences International, Roebling, N.J.). The objective of the experiment was to study the influence of tomographic tube motion, tomographic slice thickness, and object thickness on film density.
K H, Thunthy, R, Weinberg
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An improved method for determining CT image slice thickness

Medical Physics, 1981
One of the important characteristics of a computed tomography scanner is the image slice thickness. Most phantoms designed to measure this parameter do so with a ramp or tilted wire. Such a phantom must be precisely aligned to avoid possible significant inaccuracy.
N J, Schneiders, S C, Bushong
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Bread Compressibility as Affected by Slice Thickness

Journal of Food Science, 1982
ABSTRACT White bread (pup loaves and 1‐lb loaves) were wrapped in moisture‐proof bags, which were sealed, and stored at 10°, 25°, and 50°C for 1 and 3 days, respectively. Compressibility measurements were made on 1, 1.5, and 2.5 cm thick slices of these bread with the Baker compressimeter.
K. LORENZ, W. DILSAVER
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Appearances of pulmonary focal lesions at 0.5-mm slice thickness computed tomography: comparison with 1-mm slice thickness computed tomography

Clinical Imaging, 2009
This study aimed to evaluate the validity of 0.5-mm thin-section computed tomography (CT) for the assessment of pulmonary nodular lesion in comparison with 1-mm CT.A total of 38 focal lesions from 30 patients, which were scanned with 0.5- and 1.0-mm collimation, were evaluated regarding the extent of ground-glass opacity (GGO) and well-defined margin ...
Atsushi, Nambu, Satoshi, Kato, Tsutomu, Araki, Akitoshi, Saito   +3 more
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