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Biomedical subjects

C M Strother

Publications and source records attributed to C M Strother.

At least 73 records · Page 4Linked to original sources
PubMed1983

High-resolution CT analysis of facial struts in trauma: 2. Osseous and soft-tissue complications.

In six cadavers, high-resolution thin-section computed tomography (CT) was used to evaluate the sequelae of experimentally produced facial trauma. As confirmed by pluridirectional tomography, CT was an effective imaging method for the detection and classification of facial fractures. The ability of CT to simultaneously depict both osseous and soft-tissue structures expands the role that diagnostic radiology can play in the evaluation of the traumatized face. A method of evaluation is presented in which the face is geometrically conceptualized as a series of triplanar (horizontal, sagittal, and coronal) osseous struts. Sequential, systematic assessment of each strut for fracture and its adjacent soft tissue for injury can facilitate evaluation of the traumatized face. Using this approach the osseous and soft-tissue complications arising from experimentally produced trauma are reviewed and illustrated with CT. Examples of potential soft-tissue complications that may occur with fractures of the horizontal group of struts include disruption of the dura matter at the cribiform plate, involvement of the structures of the anterior cranial fossa, injury to the optic nerve, and involvement of the superior and inferior groups of extraocular muscles. Injury to the nasolacrimal duct, maxillary sinus ostium, medial and lateral rectus muscles, or the soft-tissue structures in the superior and inferior orbital fissures may arise from disruption of the sagittal struts. Fractures of the coronal struts may involve the frontal sinus, anterior cranial fossa, lacrimal gland, nasofrontal duct, lacrimal sac, or the soft tissues of the pterygopalatine fossa.

Face↗
PubMed1982

A comparison of standard cerebral arteriography with noninvasive Doppler imaging and intravenous angiography.

Standard cervical carotid arteriography was performed on 36 patients and compared with results of noninvasive Doppler arterial imaging and intravenous angiography (IVA). The 72 carotid arteries were anatomically classified by standard angiograms as follows; group 1 (normal), 13 arteries; group 2 (wall disease [50% stenosis]), 14 arteries; group 3 (moderate stenosis [5-% to 75% stenosis]) 12 arteries; group 4 (severe stenosis [greater than 75%]), 15 arteries; and group 5 (complete occlusion), 18 arteries.

Auscultation↗
PubMed1982

Lateral cervical meningocele.

Although lateral meningoceles have been described in the thorax, they have not been previously reported in the neck. We describe an infant who was born with a lateral meningocele in the cervical posterior triangle that was felt clinically to be cystic hygroma. Surgical excision was complicated by a cerebral spinal fluid fistula and subsequent meningitis. Problems that this patient presented and potential complications in management are discussed. Although the clinical manifestations of lateral meningoceles and extradural cysts are quite different, there are many anatomic similarities between these entities and other cervical masses that confuse diagnosis and nosology. Their differential diagnosis is reviewed.

Cervical Vertebrae↗
PubMed1981

Computerized arteriography of the cerebrovascular system: its use with intravenous administration of contrast material.

A unique method of computerized image enhancement makes it possible to visualize the arterial system by intravenous (IV) injection of small doses of standard contrast agent. This technique has been used to study the intracranial and extracranial circulation of more than 100 patients. Occlusion, stenosis, aneurysmal change, plaquing, and ulceration can be identified by computerized IV arteriography. Failures (less than 10%) results from inadequate venous access, extravasation of dye, or patient motion. This technique avoids the need for arteriography. The major risk of IV arteriography is contrast medium reaction. There is a close correlation between IV and standard arteriographic images. Intravenous arteriography does not require hospitalization, is suited for repetitive testing, and has promise as a method of diagnostic screening for stroke prevention.

Cerebral Angiography↗
PubMed1981

Digital video subtraction angiography for evaluation of peripheral vascular disease.

Digital video subtraction angiography (DVSA) has been employed to study a variety of peripheral vascular problems, using equipment developed at the University of Wisconsin. The technique is relatively simple and safe and has good patient acceptance. Experience indicates that in selected patients it is a satisfactory alternative to standard arteriography for screening and for definitive evaluation and on occasion may yield information not obtainable with conventional methods. It can aid in the performance of transluminal angioplasty and is suitable for serial evaluation of atherosclerotic vessels and bypass grafts.

Adult↗
PubMed1980

Meningiomatous changes in the optic canan: a polytomographic study.

Eleven patients who had unilateral insidious compression of the optic nerve but exhibited no detectable abnormality on plain skull radiographs or non-tomographic views of the optic canal were studied. Paracanalicular meningioma was proved surgically in 10. Complex-motion tomography demonstrated characteristic alterations in the bone forming the optic canal in all cases. These changes consisted of canal enlargement, changes in contour, and an atypical radiographic appearance of the cortical bone, seen as (a) diffuse, spongy, non-homogeneous thickening of the canal margins; (b) multiple tiny saw-tooth-like exostoses projecting into the canal lumen; or (c) short, well-circumscribed areas of smooth bone thickening. Other techniques such as angiography and pneumoencephalography were not as helpful in the diagnosis as complex-motion tomography.

Adult↗
PubMed1980

Clinical applications of computerized fluoroscopy: the extracranial carotid arteries.

Preliminary results obtained with a new computerized fluoroscopic apparatus in examination of the extracranial carotid arteries are described. All patients had clinical signs of symptoms of extracranial occlusive vascular disease. In most cases, image quality was sufficient to display patency of the internal carotid arteries, with excellent correlation between intravenous and conventional angiography. While the new technique is not totally noninvasive, it does eliminate many of the risks and costs of conventional arteriography.

Arterial Occlusive Diseases↗
PubMed1980

Computerized fluoroscopy: digital subtraction for intravenous angiocardiography and arteriography.

Computerized fluoroscopy is a system comprising on-line digital time and energy subtraction algorithms designed to isolate and enhance the iodine signal from image intensified fluoroscopy. The apparatus is described and its use for time subtraction intravenous arteriography of the carotid, abdominal, extremely arteries, as well as the heart, is illustrated. Vascular diseases such as stenoses, obstruction, emboli, ulcerative plaques, and aneurysms are readily demonstrated. The technique has a potential for evaluating cardiac motion and the patency of coronary artery bypass grafts. The method appears to be a safe and less expensive alternative to catheter arteriography and angiocardiography in certain instances.

Adult↗
PubMed1979

Arteriovenous malformation simulating a cyst on computed tomography.

Three cases are described in which an intracerebral arteriovenous malformation (AVM) was accompanied by a cystic component probably resulting from hemorrhage. The 3 patients gave a history of headaches. In cases of low-attenuating nonenhancing CT processes, an AVM must be considered.

Adult↗
PubMed1979

Doppler evaluation of extracranial cerebrovascular disease.

The carotid Doppler examination is an accurate means of screening the extracranial carotid system for stenotic lesions. Comparison of 100 patients (200 vessels) examined by the Doppler method and arteriography showed agreement in 90% of the vessels and a significant error rate in only 3.5%.

Arterial Occlusive Diseases↗
PubMed1978

An angiographic study of the temporal horn.

The anatomy of the posterior cerebral artery (PCA) and its branches is described. On the vertebral angiogram, displacement of these vessels is a sign of corresponding displacement of the temporal horn, which in turn is an indication of a mass involving the temporal lobe, diencephalon, or midbrain. Specific angiographic criteria for localization of the temporal horn include (a) the position of the lateral choroid artery (LCA) as it runs within the choroidal fissure; (b) the temporal branches of the PCA as they cross the parahippocampal gyrus and pass into the collateral sulcus; and (c) the crural and ambient segments of the PCA as they pass around the midbrain.

Cerebral Angiography↗