Biomedical subjects
Publications and source records attributed to C G Coin.
The authors present a technique for recording both soft tissue and bone on the same reproduction of CT images of the spine. Enhancement around the edge of osseous structures is a valuable aspect of this technique.
Following intravenous injection of iodinated contrast medium, peripheral enhancement of the area inside the spinal canal, is frequently observed by computed tomography. This may be due, at least in part, to enhancement of the cerebrospinal fluid in the spinal subarachnoid space. Our preliminary observations in human patients and in animal experiments are reported. The goal of intravenous computer assisted myelography is worth pursuing.
The computed tomography (CT) findings in a case of Reye syndrome are presented. A striking discrepancy between the CT attenuation of infratentorial (elevated values) and supratentorial structures is observed.
We have utilized computed tomography (CT) in addition to conventional radiography for evaluation and as a guide to management of serious diving injuries to the cervical spine. This technique has proven to be invaluable in the initial assessment and further clinical management of this type of injury. A classification of these injuries and associated fractures is presented based on CT appearance. Representative cases are presented comparing standard radiography and CT.
We present the computed tomography findings in a young man with known multiple sclerosis during an acute phase of recrudescence. An enhancing lesion is demonstrated in the brain with a possibly enhancing focus in the spinal cord.
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Computed tomographic arteriography is the technique of contrast enhancement by arterial perfusion during computed tomography. This technique appears to have significant advantages over conventional intravenous contrast enhancement in selected cases.
Apparent abnormal perfusion of iodinated contrast material into the ventricular system has been observed by computed tomography in a terminally ill patient with acute hydrocephalus due to cerebellar hematoma.
Computer assisted myelography (CAM) is a technique to examine the spinal subarachnoid space. Adjacent structures that may impinge on this space, such as the intervertebral disks, as well as structures contained in this space, such as the spinal cord, spinal roots, and vascular formation, may also be appraised by this method. At present, CAM is performed by subarachnoid introduction of water soluble contrast material followed by computed tomography in the axial transverse plane. The authors present their technique and their results with representative cases of intervertebral disk disease.
Contrast enhancement of computerized tomography is usually performed by means of intravenous injection of iodinated contrast materials. The authors have utilized a technique of direct arterial infusion of iodinated contrast material supplying intracranial arteries during computerized axial tomography. A representative case is presented with comparison scans which were obtained without contrast enhancement and with conventional intravenous infusion of contrast. Marked improvement of the enhancement was clearly demonstrated in this case, with abnormalities readily defined that were not seen with the conventional intravenous enhancement procedure.
A technique for internal auditory cisternography is described. A small volume of Iophendylate is used and coronal hypocycloid tomographic sections of the dependent internal auditory canal and adjacent cerebellopontine angle cistern performed.
A catheter technique for encephalography utilizing a polyethylene catheter is described. The advantages are principally that it reduces the possibility of needle displacement during examination and thus the danger of extra-arachnoid injection of air.
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