The Experts below are selected from a list of 318 Experts worldwide ranked by ideXlab platform
Mariepierre Revel - One of the best experts on this subject based on the ideXlab platform.
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Detection of residual packets in cocaine body packers: low accuracy of Abdominal Radiography—a prospective study
European Radiology, 2013Co-Authors: Pascal Rousset, Pierrefleury Chaillot, Etienne Audureau, Bertrand Becour, Isabelle Fitton, Dominique Vadrot, Caroline Rey-salmon, Mariepierre RevelAbstract:Objective To evaluate the accuracy of Abdominal Radiography (AXR) for the detection of residual cocaine packets by comparison with computed tomography (CT). Methods Over a 1-year period unenhanced CT was systematically performed in addition to AXR for pre-discharge evaluation of cocaine body packers. AXR and CT were interpreted independently by two radiologists blinded to clinical outcome. Patient and packet characteristics were compared between the groups with residual portage and complete decontamination. Results Among 138 body packers studied, 14 (10 %) had one residual packet identified on pre-discharge CT. On AXR, at least one reader failed to detect the residual packet in 10 (70 %) of these 14 body packers. The sensitivity and specificity of AXR were 28.6 % (95 % CI: 8.4–58.1) and 100.0 % (95 % CI: 97.0–100.0) for reader 1 and 35.7 % (95 % CI: 12.8–64.9) and 97.6 % (95 % CI: 93.1–99.5) for reader 2. There were no significant patient or packet characteristics predictive of residual portage or AXR false negativity. All positive CT results were confirmed by delayed expulsion or surgical findings, while negative results were confirmed by further surveillance. Conclusion Given the poor performance of AXR, CT should be systematically performed to ensure safe hospital discharge of cocaine body packers. Key Points • Both Abdominal Radiography and computed tomography can identify gastrointestinal cocaine packets. • Ten per cent of body packers had residual packets despite two packet-free stools. • Seventy per cent of these residual packets were missed on AXR. • No patient or packet characteristics predicted residual packets or AXR false negativity. • CT is necessary to ensure safe medical discharge of body packers.
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detection of residual packets in cocaine body packers low accuracy of Abdominal Radiography a prospective study
European Radiology, 2013Co-Authors: Pascal Rousset, Pierrefleury Chaillot, Etienne Audureau, Caroline Reysalmon, Bertrand Becour, Isabelle Fitton, Dominique Vadrot, Mariepierre RevelAbstract:To evaluate the accuracy of Abdominal Radiography (AXR) for the detection of residual cocaine packets by comparison with computed tomography (CT). Over a 1-year period unenhanced CT was systematically performed in addition to AXR for pre-discharge evaluation of cocaine body packers. AXR and CT were interpreted independently by two radiologists blinded to clinical outcome. Patient and packet characteristics were compared between the groups with residual portage and complete decontamination. Among 138 body packers studied, 14 (10 %) had one residual packet identified on pre-discharge CT. On AXR, at least one reader failed to detect the residual packet in 10 (70 %) of these 14 body packers. The sensitivity and specificity of AXR were 28.6 % (95 % CI: 8.4–58.1) and 100.0 % (95 % CI: 97.0–100.0) for reader 1 and 35.7 % (95 % CI: 12.8–64.9) and 97.6 % (95 % CI: 93.1–99.5) for reader 2. There were no significant patient or packet characteristics predictive of residual portage or AXR false negativity. All positive CT results were confirmed by delayed expulsion or surgical findings, while negative results were confirmed by further surveillance. Given the poor performance of AXR, CT should be systematically performed to ensure safe hospital discharge of cocaine body packers. • Both Abdominal Radiography and computed tomography can identify gastrointestinal cocaine packets. • Ten per cent of body packers had residual packets despite two packet-free stools. • Seventy per cent of these residual packets were missed on AXR. • No patient or packet characteristics predicted residual packets or AXR false negativity. • CT is necessary to ensure safe medical discharge of body packers.
Pascal Rousset - One of the best experts on this subject based on the ideXlab platform.
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Detection of residual packets in cocaine body packers: low accuracy of Abdominal Radiography—a prospective study
European Radiology, 2013Co-Authors: Pascal Rousset, Pierrefleury Chaillot, Etienne Audureau, Bertrand Becour, Isabelle Fitton, Dominique Vadrot, Caroline Rey-salmon, Mariepierre RevelAbstract:Objective To evaluate the accuracy of Abdominal Radiography (AXR) for the detection of residual cocaine packets by comparison with computed tomography (CT). Methods Over a 1-year period unenhanced CT was systematically performed in addition to AXR for pre-discharge evaluation of cocaine body packers. AXR and CT were interpreted independently by two radiologists blinded to clinical outcome. Patient and packet characteristics were compared between the groups with residual portage and complete decontamination. Results Among 138 body packers studied, 14 (10 %) had one residual packet identified on pre-discharge CT. On AXR, at least one reader failed to detect the residual packet in 10 (70 %) of these 14 body packers. The sensitivity and specificity of AXR were 28.6 % (95 % CI: 8.4–58.1) and 100.0 % (95 % CI: 97.0–100.0) for reader 1 and 35.7 % (95 % CI: 12.8–64.9) and 97.6 % (95 % CI: 93.1–99.5) for reader 2. There were no significant patient or packet characteristics predictive of residual portage or AXR false negativity. All positive CT results were confirmed by delayed expulsion or surgical findings, while negative results were confirmed by further surveillance. Conclusion Given the poor performance of AXR, CT should be systematically performed to ensure safe hospital discharge of cocaine body packers. Key Points • Both Abdominal Radiography and computed tomography can identify gastrointestinal cocaine packets. • Ten per cent of body packers had residual packets despite two packet-free stools. • Seventy per cent of these residual packets were missed on AXR. • No patient or packet characteristics predicted residual packets or AXR false negativity. • CT is necessary to ensure safe medical discharge of body packers.
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detection of residual packets in cocaine body packers low accuracy of Abdominal Radiography a prospective study
European Radiology, 2013Co-Authors: Pascal Rousset, Pierrefleury Chaillot, Etienne Audureau, Caroline Reysalmon, Bertrand Becour, Isabelle Fitton, Dominique Vadrot, Mariepierre RevelAbstract:To evaluate the accuracy of Abdominal Radiography (AXR) for the detection of residual cocaine packets by comparison with computed tomography (CT). Over a 1-year period unenhanced CT was systematically performed in addition to AXR for pre-discharge evaluation of cocaine body packers. AXR and CT were interpreted independently by two radiologists blinded to clinical outcome. Patient and packet characteristics were compared between the groups with residual portage and complete decontamination. Among 138 body packers studied, 14 (10 %) had one residual packet identified on pre-discharge CT. On AXR, at least one reader failed to detect the residual packet in 10 (70 %) of these 14 body packers. The sensitivity and specificity of AXR were 28.6 % (95 % CI: 8.4–58.1) and 100.0 % (95 % CI: 97.0–100.0) for reader 1 and 35.7 % (95 % CI: 12.8–64.9) and 97.6 % (95 % CI: 93.1–99.5) for reader 2. There were no significant patient or packet characteristics predictive of residual portage or AXR false negativity. All positive CT results were confirmed by delayed expulsion or surgical findings, while negative results were confirmed by further surveillance. Given the poor performance of AXR, CT should be systematically performed to ensure safe hospital discharge of cocaine body packers. • Both Abdominal Radiography and computed tomography can identify gastrointestinal cocaine packets. • Ten per cent of body packers had residual packets despite two packet-free stools. • Seventy per cent of these residual packets were missed on AXR. • No patient or packet characteristics predicted residual packets or AXR false negativity. • CT is necessary to ensure safe medical discharge of body packers.
Sankar Sinha - One of the best experts on this subject based on the ideXlab platform.
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plain Abdominal Radiography in acute Abdominal pain is it really necessary
Emergency Radiology, 2014Co-Authors: Mark Fiorentino, Sadhishaan Sreedharan, Sankar SinhaAbstract:The aims of this study are to audit the ordering of Abdominal radiographs (AXR) in the emergency department (ED) and evaluate the current practices, knowledge and attitudes of emergency physicians with regard to ordering AXRs in patients presenting with acute Abdominal pain. A retrospective study was undertaken at an ED of a tertiary hospital in Tasmania using clinical notes on patient presenting with acute Abdominal pain who underwent an AXR. The study also included a short questionnaire, which assessed emergency physicians’ knowledge of current imaging guidelines and clinical practice when ordering an AXR. During the study period, 108 patients satisfied the selection criteria, and the AXR was reported as normal in 76 % (n = 82; p value <0.05), non-specific in 12 % (n = 13; p value <0.05) and abnormal in 12 % (n = 13; p value <0.05) of patients. Of those patients, 25 % (n = 27) of the AXRs did not meet indications listed in the Diagnostic Imaging Pathways published by the Western Australia Department of Health and were found not to benefit patient care. Of the 19 doctors who completed the survey, only 16 % (n = 3) were aware of any clinical guidelines for imaging in this setting. Current guidelines should be followed when ordering imaging for patients with acute Abdominal pain to minimise unnecessary patient radiation exposure, avoid delays in diagnosis and definitive patient management, reduce costs and therefore increase efficiency in ED.
Michael Y M Chen - One of the best experts on this subject based on the ideXlab platform.
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Abdominal Radiography after ct reveals urinary calculi a method to predict usefulness of Abdominal Radiography on the basis of size and ct attenuation of calculi
American Journal of Roentgenology, 2001Co-Authors: Ronald J Zagoria, Elaine G Khatod, Michael Y M ChenAbstract:OBJECTIVE. The purpose of this study was to determine if the radiographic visibility of urinary tract calculi could be predicted on the basis of CT features.MATERIALS AND METHODS. The images of 26 patients whose urinary tract calculi were revealed on unenhanced helical CT and who also underwent digital Abdominal Radiography were retrospectively reviewed. CT features studied included size and CT attenuation of the calculi. These CT findings were correlated with the ability to detect the same calculi with Radiography.RESULTS. Forty-nine urinary tract calculi were detected with unenhanced helical CT in 26 patients. Twenty-six (53%) calculi were visible on Radiography. Most (79%) calculi larger than 5 mm were detectable with Radiography (p < 0.01). One (8%) of 13 calculi with CT attenuation below 200 H was detectable on radiographs. Ninety-five percent (21/22) of calculi with CT attenuation exceeding 300 H were visible on radiographs (p < 0.0001). The one remaining calculus was obscured by overlying anatomy.C...
Pierrefleury Chaillot - One of the best experts on this subject based on the ideXlab platform.
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Detection of residual packets in cocaine body packers: low accuracy of Abdominal Radiography—a prospective study
European Radiology, 2013Co-Authors: Pascal Rousset, Pierrefleury Chaillot, Etienne Audureau, Bertrand Becour, Isabelle Fitton, Dominique Vadrot, Caroline Rey-salmon, Mariepierre RevelAbstract:Objective To evaluate the accuracy of Abdominal Radiography (AXR) for the detection of residual cocaine packets by comparison with computed tomography (CT). Methods Over a 1-year period unenhanced CT was systematically performed in addition to AXR for pre-discharge evaluation of cocaine body packers. AXR and CT were interpreted independently by two radiologists blinded to clinical outcome. Patient and packet characteristics were compared between the groups with residual portage and complete decontamination. Results Among 138 body packers studied, 14 (10 %) had one residual packet identified on pre-discharge CT. On AXR, at least one reader failed to detect the residual packet in 10 (70 %) of these 14 body packers. The sensitivity and specificity of AXR were 28.6 % (95 % CI: 8.4–58.1) and 100.0 % (95 % CI: 97.0–100.0) for reader 1 and 35.7 % (95 % CI: 12.8–64.9) and 97.6 % (95 % CI: 93.1–99.5) for reader 2. There were no significant patient or packet characteristics predictive of residual portage or AXR false negativity. All positive CT results were confirmed by delayed expulsion or surgical findings, while negative results were confirmed by further surveillance. Conclusion Given the poor performance of AXR, CT should be systematically performed to ensure safe hospital discharge of cocaine body packers. Key Points • Both Abdominal Radiography and computed tomography can identify gastrointestinal cocaine packets. • Ten per cent of body packers had residual packets despite two packet-free stools. • Seventy per cent of these residual packets were missed on AXR. • No patient or packet characteristics predicted residual packets or AXR false negativity. • CT is necessary to ensure safe medical discharge of body packers.
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detection of residual packets in cocaine body packers low accuracy of Abdominal Radiography a prospective study
European Radiology, 2013Co-Authors: Pascal Rousset, Pierrefleury Chaillot, Etienne Audureau, Caroline Reysalmon, Bertrand Becour, Isabelle Fitton, Dominique Vadrot, Mariepierre RevelAbstract:To evaluate the accuracy of Abdominal Radiography (AXR) for the detection of residual cocaine packets by comparison with computed tomography (CT). Over a 1-year period unenhanced CT was systematically performed in addition to AXR for pre-discharge evaluation of cocaine body packers. AXR and CT were interpreted independently by two radiologists blinded to clinical outcome. Patient and packet characteristics were compared between the groups with residual portage and complete decontamination. Among 138 body packers studied, 14 (10 %) had one residual packet identified on pre-discharge CT. On AXR, at least one reader failed to detect the residual packet in 10 (70 %) of these 14 body packers. The sensitivity and specificity of AXR were 28.6 % (95 % CI: 8.4–58.1) and 100.0 % (95 % CI: 97.0–100.0) for reader 1 and 35.7 % (95 % CI: 12.8–64.9) and 97.6 % (95 % CI: 93.1–99.5) for reader 2. There were no significant patient or packet characteristics predictive of residual portage or AXR false negativity. All positive CT results were confirmed by delayed expulsion or surgical findings, while negative results were confirmed by further surveillance. Given the poor performance of AXR, CT should be systematically performed to ensure safe hospital discharge of cocaine body packers. • Both Abdominal Radiography and computed tomography can identify gastrointestinal cocaine packets. • Ten per cent of body packers had residual packets despite two packet-free stools. • Seventy per cent of these residual packets were missed on AXR. • No patient or packet characteristics predicted residual packets or AXR false negativity. • CT is necessary to ensure safe medical discharge of body packers.
