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Biomedical subjects

D O Davis

Publications and source records attributed to D O Davis.

At least 55 records · Page 3Linked to original sources
PubMed1975

Posterior fossa hemorrhage. Localization by computerized tomography.

The differentiation between pontine and cerebellar hemorrhage is important both prognostically and therapeutically but is often very difficult. Computerized axial tomography of the brain is a new, rapid, nonivasive method of studying intracranial disease. This technique proved useful in making this important differential diagnosis in the case reported here.

Cerebral Hemorrhage↗
PubMed1975

An accessory table for supine horizontal-beam polytome laminagraphy.

A two-part accessory table for use with the Philips Polytome is described. It permits brow-up lateral polytomography and submentovertex examinations to be carried out with the patient resting comfortably. Accuracy to 1 mm in positioning of the tomographic section is maintained.

Humans↗
PubMed1975

A head-holding device for computed tomography.

The authors describe a chin holder, modified from a commercially available encephalography chair, which significantly decreases head movement and resultant motion artifacts during computed tomography.

Humans↗
PubMed1975

Potential artifacts associated with the scanning pattern of the EMI scanner.

Physical and geometrical considerations of the EMI scanner are used to predict that regions of the head can be missed by adopting a scanner procedure based on the nominal EMI slice thickness. Using a nominal slice thickness of 1.3 cm and effective focal spot length of 12 mm, one can predict that in the central portion of the head, up to 8% of the region scanned may not be imaged. Moreover, it is shown that simultaneous monitoring of a single focal spot by two adjacent detectors, as in the EMI system, would lead to significant overlap between the two adjacent EMI slices resulting in dual imaging. Experimental examples are shown to illustrate these two artifacts in the EMI scanner.

Computers↗