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Biomedical subjects

L A Gilula

Publications and source records attributed to L A Gilula.

At least 253 records · Page 14Linked to original sources
PubMed1978

Complications associated with arteriovenous fistulas in patients undergoing chronic hemodialysis.

Over a two-year period, 100 venous angiograms were performed on 75 patients because of difficulty with vascular access. Seventy percent of the patients had decreased arterial flow or increased venous resistance. High output failure, sepsis, and aneurysm formation were also found. Venous angiography of the fistula demonstrated significant stenosis in 40% of the cases as well as total occlusion by thrombus in 9%, aneurysm formation in 7%, and abnormal fistula needle placement or anatomic abnormalities in 20% of the cases. Definitive diagnosis with the aid of venous angiography permitted specific surgical intervention in 62% of the cases, and identified new sites for needle placement in 18% of the cases, thus prolonging fistula life and reducing the need for new fistula placement. Our experience with local cellulitis of the fistula site and sepsis is also discussed.

Adult↗
PubMed1977

Analysis of gas in vacuum lumbar disc.

In three cases in which chemonucleolysis with chymopapain was used for the treatment of back and sciatic pain, gas from the vacuum phenomenon of a degenerated lumbar intervertebral disc was recovered. In one of these, the gas analyzed by gas chromatography contained 90%--92% nitrogen.

Chymopapain↗
PubMed1977

Arthrography in the diagnosis of unexplained chronic hip pain with regional osteopenia.

Three cases of chronic hip pain with radiographic periarticular osteopenia and normal joint spaces are reported. The articular nature of symptomatology, periarticular demineralization, and radionuclide localization suggested intraarticular disease. Computed tomography did not disclose the cause of hip pain when utilized in two instances. Positive contrast hip arthrography was the only diagnostic modality which demonstrated the chondromatosis or adhesive capsulitis responsible for pain. Differential diagnosis and pathophysiologic mechanisms are briefly reviewed.

Aged↗
PubMed1975

Venous angiography of hemodialysis fistulas. Experience with 52 studies.

The authors describe a simple outpatient venous angiographic method of delineating arteriovenous fistulas constructed for chronic hemodialysis, and variations of the basic technique are offered to solve the problems of overlapping vessels and obscured anastomoses. A normal fistula produces enlargement of the involved artery only, but there may be enlargement of multiple veins in the extremity in which the fistula is constructed. Stenoses, occlusions, surgical variations, aneurysms, functional abnormalities in the direction and quantity of flow, and inadequate positioning of the dialysis needles are discussed.

Aneurysm↗
PubMedDate not supplied

Radiographic features of hand and wrist arthroplasties.

The normal and abnormal radiographic appearances of various arthroplasties of the hand and wrist have been presented. It is hoped that increased familiarity with these procedures and their radiographic features will lead to more meaningful radiographic interpretations by consulting radiologists.

Finger Joint↗
PubMedDate not supplied

Radiographic features of hand and wrist surgery excluding arthroplasties.

The normal and abnormal radiographic appearances of various hand and wrist surgical procedures have been presented. It is hoped that increased familiarity with these procedures and their radiographic features will lead to more meaningful radiographic interpretations by consulting radiologists.

Arthrodesis↗
PubMedDate not supplied

Three-dimensional computed tomography of the foot: optimizing the image.

The complex anatomy of the foot can be imaged using high resolution computed tomography. High resolution serial nonoverlapping CT scans of foot anatomy have a high degree of soft tissue contrast, and excellent geometrical accuracy (no magnification error). Three-dimensional surface reconstruction from CT scans of the foot were performed using specially developed computer software. These surface reconstructions display the osseous and soft tissue anatomy of the foot in a form similar to anatomic preparations. The removal of overlying skin, disarticulation of the ankle, tarsals and metatarsals was accomplished using computer methods. Major factors necessary to optimize three-dimensional images are presented and illustrated. The technique has been applied in living subjects with arthritis, carpal coalitions, osteochondritis dissecans, and fractures. These images have been useful in communicating the findings on high resolution CT scans to referring clinicians, correlating CT findings in areas of complex anatomy, and eliminating overlying or obscuring structures by mathematically disarticulating the foot and individual tarsal bones.

Cadaver↗
PubMedDate not supplied

Three-dimensional surface reconstruction of the carpal bones from CT scans: transaxial versus coronal technique.

Computer methods for reconstruction of three-dimensional (3-D) images from standard CT scans have been developed. The process does not require special computer knowledge and can be performed with a unmodified CT scanner. 3-D images are especially valuable for conveying information to nonradiologist physicians, who are unfamiliar with the numerous slice-format images produced in a standard CT examination. The utility of these methods for clarification of areas of complex skeletal anatomy has been previously demonstrated in the literature. We performed 3-D imaging on a normal isolated cadaver hand and on a patient with scaphoid fracture. In both cases the 3-D images obtained had excellent osseous anatomical detail. A method of acquisition of high quality wrist CT scans, suitable for 3-D processing, is suggested.

Cadaver↗
PubMedDate not supplied

Computed tomography of the normal radioulnar joints.

Computed tomography followed by sectional radiography and photography as performed on eight cadaveric specimens in order to define the anatomy and normal motion of both the proximal and the distal radioulnar articulations. Osseous landmarks were defined that allowed measurement of rotation at the glenohumeral, proximal radioulnar and distal radioulnar joints as well as rotation between humerus and radius and between humerus and ulna. Findings included the absence of independent ulnar rotation and the presence of normal translatory motion at the distal radioulnar articulation that may be misinterpreted as evidence of subluxation of the distal ulna.

Elbow Joint↗