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Biomedical subjects

G J Skipper

Publications and source records attributed to G J Skipper.

5 recordsLinked to original sources
PubMed1992

Device for facilitating precise alignment in bedside radiography.

The difficulty associated with achieving precise alignment in a bedside radiographic setting has led many departments to abandon the use of a grid and forfeit the improved contrast it affords. The authors describe a method of alignment that has proved successful in overcoming the hazards of grid cut-off in a bedside setting. The method affords obtainment of reproducible high-quality bedside radiographs with a 10:1 linear grid.

Beds↗
PubMed1990

Epidural peg electrodes for the presurgical evaluation of intractable epilepsy.

A new electrode design for the extradural recording of electrical brain activity is described. Epidural peg electrodes are implantable mushroom-shaped composites of Silastic elastomer and a stainless steel or platinum disc. These electrodes are useful for the preoperative mapping of seizure foci in some patients who have cranial defects or severe muscle artifacts on scalp recordings. They are also used for canvassing wide areas of cortex to determine whether a seizure is focal in origin, arises diffusely from a hemisphere, or has a bilateral origin. Advantages of epidural peg electrodes over screw and other types of epidural electrodes include low risk of infection or hemorrhage and improved patient comfort.

Electrodes, Implanted↗
PubMed1986

Simultaneous external subretinal fluid drainage and intravitreal gas injection in nonvitrectomized eyes with a special 27-gauge needle.

In 12 patients with retinal detachment requiring a scleral buckle, simultaneous external subretinal fluid drainage, and intravitreal gas injection were performed to prevent "fishmouthed" retinal breaks in six patients and to achieve more complete drainage of subretinal fluid in six others with chronic inferior detachments. To simplify this technique in all of these nonvitrectomized eyes, we used a special 27-gauge needle sutured to the sclera.

Drainage↗
PubMed1981

Steerable real-time sonographically guided needle biopsy.

A method for dynamic real-time ultrasonic guidance for percutaneous needle biopsy has been successful in obtaining cytologic and histologic specimens from abdominal masses. The system depends on a real-time ultrasonic transducer that has been rigidly attached to a laterally placed steerable needle holder. Using simple trigonometric functions, a chart has been derived that gives the exact angulation and needle length to produce quick, reliable, guided needle placements. Examples of successful renal, hepatobiliary, and retroperitoneal biopsies are presented. Advantages of this technique include speed, accuracy, low cost, three-dimensional format, and the omission of contrast media and radiation.

Adrenal Gland Neoplasms↗