Search PubMed⌕ Search

Biomedical subjects

J M Destouet

Publications and source records attributed to J M Destouet.

At least 37 records · Page 2Linked to original sources
PubMed1987

Multispectral analysis of MR images of the breast.

Preliminary investigations were conducted into the potential of magnetic resonance (MR) images for tissue classification of the breast on the basis of relative signal intensity. Multispectral techniques originally developed by the National Aeronautics and Space Administration for satellite image analysis were used in sequence selection, image data correction, image standardization, and image interpretation. Numerous sequence combinations with varying repetition times (TR) and echo times (TE) were considered, and a triplet was selected consisting of long TR/long TE, short TR/short TE, and an opposed phase sequence with intermediate TR and TE. Correction to remove system-imposed intensity inhomogeneities was required for all images. Image standardization based on fat and pectoral muscle signals was necessary for intercase comparisons. Multispectral images obtained based on this analysis suggest the feasibility of intensity-based image classification.

Breast Neoplasms↗
PubMed1985

Pressure erosions of bone in rheumatoid arthritis: a subject review.

Pressure, or compressive, erosions of bone in various locations in patients with rheumatoid arthritis are described. Possible pathophysiologic mechanisms that account for the appearance and distribution of these erosions include osteopenia, soft-tissue laxity, soft-tissue pressure on bone, bone pressure on bone, and muscular forces.

Acetabulum↗
PubMed1985

The carpal boss: an overview of radiographic evaluation.

The carpal boss, an unmovable bony protuberance, is located on the dorsum of the wrist at the base of the second and third metacarpals adjacent to the capitate and trapezoid bones. This bony prominence may represent degenerative osteophyte formation and/or the presence of an os styloideum, an accessory ossification center that occurs during embryonic development. When this condition is symptomatic, patients present with complaints of pain and limitation of motion of the affected hand. The symptoms of carpal boss may result from an overlying ganglion or bursitis, an exterior tendon slipping over this bony prominence, or from osteoarthritic changes at this site. Radiographically, the view that best profiles the separate os styloideum is a lateral view utilizing 30 degrees of supination and ulnar deviation of the wrist. Once a diagnosis has been made, treatment can range from the use of nonsteroidal antiinflammatory medication and limited use of the wrist to surgical excision of the anatomic abnormality.

Bone Diseases↗
PubMed1985

Hexabrix as a contrast agent for ascending leg phlebography.

Fifty patients were analyzed after a randomized double-blind study comparing Hexabrix and Hexabrix-20 in ascending phlebography. Measures of safety and patient tolerance indicated that both concentrations of Hexabrix appeared safe and were well tolerated. All studies were diagnostic, and the image quality was rated as excellent in 80% of the Hexabrix group and 72% of the Hexabrix-20 group. The authors conclude that Hexabrix and Hexabrix-20 are acceptable contrast media for ascending phlebography.

Adult↗
PubMed1984

Musculoskeletal sporotrichosis.

Sporotrichosis is a chronic, indolent, fungal infection that rarely involves the musculoskeletal system. The etiologic agent, Sporothrix schenckii, is ubiquitous in nature and has been isolated from soil, timber, decaying vegetation, and a variety of foliage. The organism gains entrance to the body through trauma to the skin or, in rare instances, by inhalation. The vast majority of infections in humans is characterized by nodular or ulcerated lesions of the cutaneous tissues and adjacent lymphatics. Osteoarticular involvement may occur either by contiguous spread from a cutaneous focus, through direct inoculation of tissue by the organism, or by hematogenous dissemination. The rarity of musculosketetal sporotrichosis often causes a delay in diagnosis which leads to inappropriate therapy and permanent deformity in some patients. Three cases which show a spectrum of bone and joint involvement are presented.

Aged↗
PubMed1984

Ankle tenography: a key to unexplained symptomatology. Part I: Normal tenographic anatomy.

Fifty cadaver ankles were examined with ankle tenography. The normal tenographic appearance of the peroneus longus and brevis, posterior tibial, flexor digitorum longus, flexor hallucis longus, anterior tibialis, extensor hallucis longus, and extensor digitorum longus tendons and sheaths are described and illustrated for clinical reference. The baseline measurements and demonstration of the normal radiographic appearance of these tendons should assist in the evaluation of hindfoot foot disability and ankle pain.

Ankle↗
PubMed1984

Elbow arthrography: a reassessment of the technique.

Twenty-six elbow arthrograms were retrospectively reviewed. Each arthrogram consisted of conventional radiography, conventional tomography, standard double-contrast arthrography, and arthrotomography. Each of these four components was independently interpreted in a blinded fashion by six radiologists, each working alone. The four components were evaluated for presence or absence of intraarticular bodies, cartilage loss, or fractures. The results showed that conventional tomography was the most accurate single study. Arthrotomography rarely improved the diagnostic accuracy of noncontrast methods. It was useful in those few patients where detection of purely cartilaginous bodies, precise position of mineralized densities, or status of articular cartilage was desired. It may be possible to reduce the number of elbow arthrograms, thereby reducing time, cost, and radiation dose factors.

Adolescent↗
PubMed1982

Tumoral calcinosis: case report and review.

A case of tumoral calcinosis is presented. The characteristic clinical, radiologic, and pathologic features of this uncommon disease are described and the various speculations about its etiology are examined, based on a review of the approximately 150 cases which comprise the world literature concerning this disease. The differential diagnosis of periarticular calcified soft tissue masses is discussed.

Calcinosis↗
PubMed1981

Computed tomography of the sternoclavicular joint and sternum.

Computed tomography (CT) was used to examine 17 patients with various pathologic conditions (trauma, neoplasm, infection, or arthropathy) involving the sternoclavicular joint or sternum. CT required less time to perform and caused less discomfort to the patient than did conventional linear tomography. CT also demonstrated abnormalities better or provided additional useful diagnostic information in the majority of patients. When plain radiographs are not conclusive, CT is the preferred radiologic modality for the evaluation of the sternoclavicular joint and sternum.

Adolescent↗
PubMed1981

Percutaneous skeletal biopsy 1981: a procedure for radiologists--results, review, and recommendations.

A retrospective study of 169 percutaneous skeletal biopsies performed by radiologists at the Mallinckrodt Institute of Radiology and Barnes Hospital between October 1974 and July 1980 showed an overall accuracy of 94%; a negative result had a predictive value of 92%. A review of the English-language literature revealed that nearly 10,000 aspiration or trephine musculoskeletal biopsies have been reported during the past 50 years; historical accuracy is approximately 80%, but this figure is probably an underestimate because true-negative cases may not have been well documented or tabulated. The authors believe that percutaneous skeletal biopsy should be considered a radiological procedure, and that radiologists could and should perform this procedure as part of a team effort.

Biopsy↗
PubMed1980

Fibrous histiocytoma (fibroxanthoma) of a cervical vertebra. A report with a review of the literature.

A patient with a benign appearing intraosseous fibrous lesion of the cervical vertebra is presented. The lesion had the histologic features of non-ossifying fibroma (metaphyseal fibrous defect). Because of its atypical location and unusual radiologic appearance, the lesion was diagnosed as a fibrous histiocytoma, a tumor whose histology is similar to non-ossifying fibroma. The literature was reviewed for similar cases located outside the metaphysis of the long bones. Support is given for designating such lesions as fibrous histiocytomas rather than non-ossifying fibromas.

Adult↗
PubMed1979

Computed tomography of long-bone osteosarcoma.

Six cases of osteosarcoma, including medullary, parosteal, periosteal, and intracortical types, were studied by computed tomography (CT). In selected cases, CT provided additional preoperative information as to osseous size and soft-tissue extent. CT helped determine intramedullary involvement and specific sites of cortical destruction and thereby helped to plan the surgical approach to biopsy and the definitive excision.

Adolescent↗