PubMed Health⌕ Search

Biomedical subjects

J M Pasquier

Publications and source records attributed to J M Pasquier.

8 recordsLinked to original sources
PubMed1998

Comparative assessment of digital and analog radiography: diagnostic accuracy, cost analysis and quality of care.

OBJECTIVE: The aim of this study was to compare digital and conventional radiography for diagnostic accuracy, direct costs, and quality of care. MATERIALS AND METHODS: Diagnostic accuracy was assessed by a critical review of the literature on sensitivity, specificity and ROC analysis of these imaging techniques and by a survey with a panel of radiologists. Direct costs and quality of care were evaluated with a before/after study of the implementation of digital radiography in a Department of Radiology in 'Hospices Civils de Lyon' (France). We included 292 patients and measured duration of examinations and direct costs of equipment, films, maintenance and depreciation. To evaluate any changes in working conditions and patient management, a questionnaire was filled out by the staff of the department. RESULTS: Diagnostic accuracy with digital radiography was equivalent to that of conventional radiography but there were wide variations depending on the type of examination. In 1993, although digital radiography resulted in savings of FF 18,000 including tax (US$ 3600) on film consumption for 1 year of examinations, there was a global additional cost of FF 253,000 (US$ 50,600) for maintenance and depreciation. Results showed a nonsignificant tendency to reduced procedure times for all examinations. Working conditions improved, including greater availability for the patient, improved safety, and increased job interest. CONCLUSION: Digital radiography can be introduced into a large hospital to improve patient and staff conditions, at a higher cost than analog radiography, and depending on the type of examinations performed by the radiology department.

Cost Savings↗
PubMed1993

Sonography of the hip and soft tissues of the thigh in children.

High-resolution real-time sonography (US) has been used for many years in departments of pediatric radiology to image soft tissues and joints in children. The purpose of this study was to review the main indications and results of US in assessing the hip (except for congenital dislocation and subluxation) and the soft tissues of the thigh and groin in children. The technical and anatomical factors relative to the optimal imaging of the hip joint and thigh muscles are also discussed and a variety of conditions considered, ranging from painful hips to soft tissue masses. In conclusion, high-resolution US emerges as a particularly useful tool in the study of children with acute hip pain (hip joint effusion), suspected osteomyelitis (fluid collection around the femoral saft) and various soft tissue of the thigh.

Hip↗
PubMed1991

[Nephrotic syndrome, pancreatitis, hepatitis B. Report of a case].

We report on a case of acute pancreatitis in a 9 year-old girl suffering from steroid resistant nephrotic syndrome. Acute abdominal pains revealed pancreatitis whose outcome was favorable after 5 days of total parenteral nutrition. None of the usual causes of pancreatitis was recognized. A serologic profile of hepatitis B, compatible with a chronic carriage of the virus B was found. The possible relationships between pancreatitis, viral hepatitis and the nephrotic syndrome are discussed.

Acute Disease↗
PubMed1982

Purification of horse eosinophil peroxidase.

Eosinophil peroxidase (donor: hydrogen-peroxidase oxidoreductase, EC 1.11.1.7) was isolated in a highly purified form (415/280 nm ratio, 1.05) from horse peripheral blood eosinophil. Eosinophil peroxidase was extracted from intact eosinophils (98-100% purity) or isolated eosinophil granules with 0.05 M acetate buffer (pH 4.7)/0.18 M NaCl and purified by chromatography on Sephadex G-200 and carboxymethylcellulose. Final elution was with 0.05 M acetate buffer (pH 4.7)/ 1 M NaCl. Horse eosinophil peroxidase is a strongly basic protein with bacterial properties when combined with H2O2 and iodide, bromide or, to a lesser degree, chloride.

Animals↗
PubMedDate not supplied

[Transthoracic puncture and excavated pulmonary lesion. Diagnostic contribution and value of the extemporaneous cytologic test].

Twenty-six cases of excavated pulmonary masses are reported. In 18 cases malignancy was proven by transparietal needle aspiration. A false-negative result was due to the needle being introduced too centrally and bringing pus, whereas the tumour was an epidermoid carcinoma. The seven non-malignant lesions consisted of abscess in 4 cases, tuberculosis in 1 case and pulmonary embolism in 2 cases. The sensitivity and specificity of the technique were similar to those observed in large series of transparietal needle aspiration of solid masses. Using thin needles and extemporaneous cytology reduced the number of complications: haemothorax 6 percent, haemoptysis 0.4 percent. The authors conclude that in excavated pulmonary masses transparietal needle aspiration provides a diagnosis of malignancy when the radiological and clinical courses and bronchial fibroscopy are inconclusive. Transparietal needle aspiration avoids the need for other investigations, such as exploratory thoracotomy, thereby reducing the cost of diagnosis.

Aged↗