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J J Fennessy

Publications and source records attributed to J J Fennessy.

At least 19 recordsLinked to original sources
PubMed1990

Quantitative computer-aided analysis of lung texture in chest radiographs.

The authors describe a computerized method to quantify and characterize interstitial diseases by using physical texture measures obtained from an analysis of the power spectrum of lung textures in digital chest radiographs. They compared these texture measures obtained from standard radiographs from the International Labour Office (ILO) classification scheme and the ILO classification categories for small opacities in pneumoconioses. Their preliminary results indicate that texture measures obtained from this computer analysis of the ILO standard radiographs correspond closely with the ILO classification categories.

Computer Graphics↗
PubMed1987

Irradiation damage to the lung.

While some degree of injury to normal, non-tumor-bearing, intrathoracic structures always occurs following irradiation for cure or palliation of neoplastic disease, clinical expression of this injury is uncommon. However, under certain circumstances, clinical manifestations may be severe and life threatening. Acute radiographic manifestations of pulmonary injury usually appear either synchronous with or, more typically, seven to ten days after the onset of the clinical syndrome. The acute signs of edema and slight volume loss within the irradiated zone are nonspecific except for their temporal and spatial relationship to the irradiation of the patient. Resolution of the acute changes is followed by pulmonary cicatrization, which is almost always stable within one year after completion of therapy. Change in postirradiation scarring following stabilization of the reaction must always be assumed to be due to some other process. While the radiograph primarily reveals pulmonary injury, all tissues, including the heart and major vessels, are susceptible, and the radiologist must recognize that any change within the thorax of a patient who has undergone thoracic irradiation may be a complication of that treatment. Differentiation of irradiation injury from residual or recurrent tumor, drug reaction, or opportunistic infection may be difficult and at times impossible.

Heart Injuries↗
PubMed1979

Transcatheter bronchial brush and forceps biopsies. Histologic evaluation.

The histologic findings in transcatheter brush and forceps biopsies from 472 cases over a six-year period are evaluated. Diagnostic accuracy based on histologic findings was 38% and based on cytologic findings was 70%. When the two methods of examination were used, however, the overall accuracy was improved to 76%. In Hodgkin's disease and some inflammatory processes histologic examination is essential for the diagnosis. The transcatheter biopsies under fluoroscopic control are especially useful for securing tissues from the peripherally located lesions. When possible, examination of tissue obtained by transcatheter as well as forceps biopsies is encouraged.

Adenocarcinoma↗
PubMed1976

The radiology of lung cancer.

Double reading of radiographs increases the likelihood of detecting pulmonary disease and, accordingly, physicians have an obligation to view the radiographic examinations performed on their patients, either with the radiologist or independently. It is also essential that the radiologist be proved with the clinical findings before he interprets the radiographs, a practice which will result in significant improvement in the accuracy of radiologic reports.

Adenocarcinoma↗
PubMed1973

Bronchography.

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Bronchography↗