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Biomedical subjects

J Rémy

Publications and source records attributed to J Rémy.

At least 19 recordsLinked to original sources
PubMed2002

[Portal pulmonary venous anastomosis and portal hypertension].

The authors report two cases of portopulmonary anastomosis to show the value of multidetector CT with MPR MIP reformations in the diagnosis of portopulmonary venous anastomosis. This diagnosis has consequences in the treatement of hypoxemia in patients with chronic liver disease and embolization of bleeding esophageal varices in these patients.

Collateral Circulation↗
PubMed2002

[Management strategy of pulmonary nodules].

Today pulmonary nodules are commonly detected by spiral CT but their evaluation and management remain a difficult task. The traditional approach, based on the principles of decision analysis, relies on estimating the probability of malignancy from risks factors assessed by history and morphological characteristics on chest radiographs and CT examinations. Use of non-invasive techniques such as PET and contrast-enhanced CT may decrease the number of invasive procedures performed to obtain an histological diagnosis. A precise evaluation of nodule growth can be obtained from recent improvements in CT technology and may shorten the follow-up. The goal of this review, based on the consensus obtained in a multidisciplinary group, is to emphasize the recent advances on the topic and to propose guidelines.

Algorithms↗
PubMed2002

[Management strategy of pulmonary nodules].

Today pulmonary nodules are commonly detected by spiral CT but their evaluation and management remain a difficult task. The traditional approach, based on the principles of decision analysis, relies on estimating the probability of malignancy from risks factors assessed by history and morphological characteristics on chest radiographs and CT examinations. Use of non-invasive techniques such as PET and contrast-enhanced CT may decrease the number of invasive procedures performed for obtaining a histological diagnosis. A precise evaluation of nodule growth can be obtained from recent improvements in CT technology and may shorten the follow-up. The goal of this review, based on the consensus obtained in a multidisciplinary group, is to emphasize the recent advances on the topic and to propose guidelines.

Diagnosis, Differential↗
PubMed2001

[Editorial].

Explore the source record for details and available documents.

Humans↗
PubMed2001

[Interpretation of thoracic radiographs re-examined and corrected with tomodensitometry].

To our knowledge, conventional chest radiography is not likely to become obsolete or disappear from the daily practice of medical imaging. As such, it is important to insure that chest radiographs are acquired using optimal technique. Evaluation of chest radiograph findings must be comprehensive and the art of reading chest radiographs must be well thought to physicians in training. Chest radiography is characterized by the projection of tridimensional anatomical structures and disease processes onto a two-plane radiographic film. Correlation with cross-sectional data obtained from CT may greatly enhance the understanding and interpretation of conventional chest radiographs. Indeed, review of CT images facilitates anatomical understanding of the segmental and subsegmental anatomy, of the superior segments of the lower lobes and of the three dimensional orientation of the fissures. CT also has improved the understanding of some chest radiography findings. Careful review of findings at chest radiography is helpful to optimize CT acquisition protocols in order to reduce some of the pitfalls of CT and improve detection of specific processes that could otherwise be poorly demonstrated or overlooked. Chest radiographs can sometimes detect diseases or abnormalities that are difficult to demonstrate at CT.

Humans↗
PubMed2001

[Optimal screening tool for thoracic diseases: chest X ray or CT?].

There are good reasons to believe that screening of lung parenchymal diseases by CT is superior to chest radiographs. Nevertheless, conventional chest radiography often remains the first examination performed for evaluation of thoracic diseases and, irrespective of clinical indication, it plays an important role in screening procedures. The interpretation methodology of a chest radiograph in a screening condition is reviewed. Specific attention to poor detectability zones is emphasized and a check-list is proposed, mainly to reduce the risk of overlooking lesions. Techniques, indications and respective diagnostic values for both chest radiography and CT scan are analyzed and applied to the screening of lung cancer, asbestos exposure and tuberculosis.

Humans↗
PubMed2000

Thoracic helical CT: influence of subsecond scan time and thin collimation on evaluation of peripheral pulmonary arteries.

The objective of this study was to analyze the influence of collimation on the identification of peripheral pulmonary arteries on helical CT scans. Three hundred sixty of 370 consecutive helical CT angiograms of the pulmonary circulation obtained during an 18-month investigation period were considered as technically acceptable for the detection of acute pulmonary embolism and were retrospectively analyzed. Patients in group A (n = 274) underwent CT with 2-mm collimation and pitch of 2; those in group B (n = 86) underwent CT with 3-mm collimation and pitch 1.7; a 0.75-s rotation time was systematically used. A total of 2160 segmental (six arterial zones per patient) and 2160 subsegmental (six arterial zones per patient) arterial zones were assessed. Whereas the percentage of segmental arteries was not significantly different between group A (86%) and group B (89%), the percentage of analyzable subsegmental arteries was greater in group A (65%) than in group B (43 %) (P<0.001). The causes of inadequately depicted subsegmental arterial zones were partial-volume effects (group A, n = 302; 52%; group B, n = 197; 67%; P<0.001), suboptimal enhancement (group A, n = 145; 25%; group B, n = 43; 15%; P<0.05), motion artifacts (group A, n = 113; 20%; group B, n = 30; 10%), and unincluded arteries (group A, n = 20; 3%; group B, n = 25; 8%). Helical CT with 2-mm collimation at 0.75 s per revolution enables marked improvement in the analysis of subsegmental arteries in routine clinical practice.

Adolescent↗
PubMed2000

[Spiral (helical) CT of tracheobronchial diseases].

The acquisition techniques, including some important dosimetric considerations, and the reconstruction methods reviewing the tomographic, bronchographic and endoscopic rendering techniques are first taken into consideration. They are applied to the most usual problems and diseases encountered in the daily activityThe main purpose of this review, which merges the modern technology of spiral (helical) CT with the multislice acquisition in the very near future, consists in delivering, whenever possible, an integrated diagnostic and therapeutic approach of imaging, endoscopy and surgery.

Bronchial Diseases↗