Biomedical subjects
Publications and source records attributed to V C Hinck.
This study illustrates detailed cerebral anatomy that can be consistently visualized on computed tomography scans after a rapid high dose of contrast substance has been infused. A thorough knowledge of anatomy is required not only to detect and precisely localize lesions but to avoid ascribing pathological significance to normal, contrast enhanced structures.
A rapid, simple, and inexpensive computed tomographic technique has been developed for marking the scalp and lateral skull radiograph of patients with small cerebral convexity lesions. The more precise localization provided thereby facilitates planning and performance of surgery.
The diagnostic accuracy of CT scanning in the sellar area can be improved by using a rapid high dose (RHD) contrast technique which visualizes the supraclinoid carotid arteries, cavernous sinus and vascular plexus of the infundibulum. The RHD technique is briefly described and the pertinent anatomy discussed and illustrated.
Ten patients were studied in whom precontrast computed tomography (CT) revealed an isodense mass which obliterated cerebral sulci and deformed the ventricle(s). Upon rapid-high-dose (RHD) contrast enhancement, the cerebral hemispheric surface was so well demonstrated, that in 4 patients the possibility of an isodense subdural hematoma was exluded, while in the other 6 it was correctly diagnosed. Preoperative angiography was not necessary.
The choroid plexus of the fourth ventricle is a sensitive, symmetrical CT landmark which can often be visualized in overlapped scans performed in the orbital plane during rapid infusion of a high dose of iodinated contrast substance. Normal and pertinent abnormal plexus configurations are described and illustrated.
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Painless recovery of radiopaque substances after positive contrast myelography is often difficult, especially if the initial spinal tap is not made precisely in the midline. The author has designed a cannula for aspiration which has performed favorably in clinical tests and which will soon be available commercially.
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