Biomedical subjects
E F Binet
Publications and source records attributed to E F Binet.
Additional uses of basal polytomography. Patient positioning and technical factors.
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A tomographic study of the base of the skull; technic and anatomic-pathologic correlation.
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Evaluation of dilute pantopaque for large-volume myelography.
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Scintiangiography of cerebral arteriovenous malformations and aneurysms.
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Orbital dysplasia in neurofibromatosis.
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Lumbar myelography with iohexol and metrizamide. A comparative multicenter prospective study.
Diagnostic quality and adverse reactions associated with metrizamide and iohexol as contrast agents for lumbar myelography were compared in a prospective randomized double-blind study in 350 patients at seven centers. Both contrast media were administered in comparable volumes at a concentration of 180 mg I/ml. Overall quality of radiographic visualization was graded as "good" or "excellent" in 95% of 175 metrizamide studies and in 98% of 175 iohexol myelograms. Ninety-three patients examined with metrizamide (53%) and 130 patients studied with iohexol (74%) experienced no discomfort during or after myelography. The incidence of postmyelographic headache was 38% with metrizamide and 21% with iohexol. Nausea and vomiting were also more common with metrizamide. Five patients examined with metrizamide (3%) experienced transient confusion and disorientation after lumbar myelography. No such reactions were observed after iohexol myelography.
MR artifacts after anterior cervical diskectomy and fusion: a cadaver study.
OBJECTIVE: To identify the source of metallic artifacts observed on cervical spine MR studies following anterior cervical diskectomy and fusion (ACD&F), preoperative and postoperative MR studies were done on cadavers using standard spin echo T1, T2, and GRASS imaging. MATERIALS AND METHODS: An ACD&F was performed on each cadaver at various levels using different combinations of drill burrs, curettes, and suction tips. RESULTS: Results showed that contact between the drill burr and suction tip produced the worst artifacts; however, artifacts still occurred in cases in which the suction tip was not introduced. CONCLUSION: This observation suggests that metal flakes from the curettes also produced artifacts. Image distortion was greater on GRASS imaging than on the spin echo imaging.
MRI of iatrogenic spinal epidermoid tumor.
A child who had received multiple lumbar punctures 6 years previously was found to have an acquired epidermoid tumor of the lumbar spinal canal, a rare intraspinal lesion. The isointense epidermoid tumor showed ring enhancement only after gadolinium administration.
Needle placement of myelography.
Proper placement of the entire bevel of the spinal needle within the subarachnoid space at myelography is necessary to prevent partial extra-arachnoid deposition of the contrast medium. A Cuatico aspiration cannula passed through the spinal needle at the time of spinal puncture serves to indicate the depth of the needle tip within the subarachnoid space.
Value of computed tomography in the diagnosis and management of subarachnoid hemorrhage.
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Preparation of neuroradiologic procedures: a questionnaire.
Responses to a questionnaire sent to members of the ASNR indicated that most neuroradiologists do not believe extensive precautions reduce the infection rate for the routine patient undergoing myelography or femoral cerebral angiography. Most neuroradiologists queried do not routinely perform a surgical scrub before each procedure. Most wear sterile gloves and gowns, but not caps or masks. They do prepare the puncture site in a meticulous manner. Concern was expressed for the likelihood of causing infection in patients undergoing extensive procedures such as angioplasty or embolization, puncturing femoral grafts, or in the presence of artificial heart valves. The increased likelihood of incurring infections in diabetic or immunosuppressed patients was also expressed. In these patients, meticulous surgical technique was deemed mandatory.
Iohexol lumbar myelography: clinical study.
Forty-three patients underwent lumbar myelography with the new, nonionic contrast medium iohexol. Multiple laboratory examinations, neurologic examinations, and electrocardiograms showed no significant alterations after intrathecal injection of the contrast agent. Mild electroencephalographic changes were seen in one patient. Nineteen adverse reactions occurred in 13 patients; only one of them was considered severe. No patient experienced a seizure, auditory or visual hallucination, or similar neuropsychologic reaction. This is a distinct improvement over the side effects described for previous water-soluble contrast agents. The adverse reactions occurring with iohexol myelography are fewer in number and less severe than with metrizamide myelography, and radiographic visualization obtained with iohexol is equal to that obtained with metrizamide. With iohexol, it appears that the most disturbing and disabling neuropsychologic reactions have been reduced to an acceptable minimum.
Ipsilateral subclavian steal in association with aberrant origin of the left vertebral artery from the aortic arch.
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Posttraumatic pseudoaneurysm of the posterior meningeal artery associated with intraventricular hemorrhage.
A 22-year-old man sustained a severe head injury and had a torn posterior meningeal artery that caused massive intraventricular hemorrhage. Traumatic pseudoaneurysm of the posterior meningeal artery should be considered in cases where intraventricular hemorrhage occurs in the presence of occipital bone fracture and contiguous epidural hematoma; vertebral angiography is of value in this regard.