Abstract:
OBJECTIVES:To evaluate the feasibility and incremental diagnostic value of xenon-enhanced dual-energy CT in mechanically ventilated intensive care patients with worsening respiratory function. METHODS:The study was performed in 13 mechanically ventilated patients with severe pulmonary conditions (acute respiratory distress syndrome (ARDS), n=5; status post lung transplantation, n=5; other, n=3) and declining respiratory function. CT scans were performed using a dual-source CT scanner at an expiratory xenon concentration of 30%. Both ventilation images (Xe-DECT) and standard CT images were reconstructed from a single CT scan. Findings were recorded for Xe-DECT and standard CT images separately. Ventilation defects on xenon images were matched to morphological findings on standard CT images and incremental diagnostic information of xenon ventilation images was recorded if present. RESULTS:Mean xenon consumption was 2.95 l per patient. No adverse events occurred under xenon inhalation. In the visual CT analysis, the Xe-DECT ventilation defects matched with pathologic changes in lung parenchyma seen in the standard CT images in all patients. Xe-DECT provided additional diagnostic findings in 4/13 patients. These included preserved ventilation despite early pneumonia (n=1), more confident discrimination between a large bulla and pneumothorax (n=1), detection of an airway-to-pneumothorax fistula (n=1) and exclusion of a suspected airway-to-mediastinum fistula (n=1). In all 4 patients, the additional findings had a substantial impact on patients' management. CONCLUSIONS:Xenon-enhanced DECT is safely feasible and can add relevant diagnostic information in mechanically ventilated intensive care patients with worsening respiratory function.
journal_name
Eur J Radioljournal_title
European journal of radiologyauthors
Hoegl S,Meinel FG,Thieme SF,Johnson TR,Eickelberg O,Zwissler B,Nikolaou Kdoi
10.1016/j.ejrad.2012.10.029subject
Has Abstractpub_date
2013-03-01 00:00:00pages
557-62issue
3eissn
0720-048Xissn
1872-7727pii
S0720-048X(12)00544-Xjournal_volume
82pub_type
临床试验,杂志文章abstract:OBJECTIVE:To compare two different expandable electrodes in radiofrequency ablation of renal cell carcinoma. METHODS:Percutaneous ablation was performed at two centers using either an expandable 7F umbrella-shaped LeVeen probe (diameter 2-4 cm) and a 200-W generator (group A), or an expandable Starburst XL electrode w...
journal_title:European journal of radiology
pub_type: 杂志文章
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journal_title:European journal of radiology
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journal_title:European journal of radiology
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journal_title:European journal of radiology
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journal_title:European journal of radiology
pub_type: 杂志文章,评审
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journal_title:European journal of radiology
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journal_title:European journal of radiology
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更新日期:1984-08-01 00:00:00
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journal_title:European journal of radiology
pub_type: 杂志文章
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journal_title:European journal of radiology
pub_type: 杂志文章,meta分析,评审
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journal_title:European journal of radiology
pub_type: 杂志文章,评审
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journal_title:European journal of radiology
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journal_title:European journal of radiology
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journal_title:European journal of radiology
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journal_title:European journal of radiology
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更新日期:2009-05-01 00:00:00
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journal_title:European journal of radiology
pub_type: 杂志文章
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更新日期:2013-04-01 00:00:00
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更新日期:2018-06-01 00:00:00
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journal_title:European journal of radiology
pub_type: 杂志文章
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更新日期:1994-05-01 00:00:00
abstract::Pelvic fractures are common in polytrauma and continue to pose a difficult management dilemma for even the most experienced clinicians. Due to the high energy mechanisms involved, there are often multiple other injuries and many specialists may be involved. Deriving an effective management strategy relies on early dia...
journal_title:European journal of radiology
pub_type: 杂志文章,评审
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更新日期:2010-04-01 00:00:00