Comparison of the ultra-low-dose Veo algorithm with the gold standard filtered back projection for detecting pulmonary asbestos-related conditions: a clinical observational study.
BMJ Open
; 4(5): e004980, 2014 May 30.
Article
em En
| MEDLINE
| ID: mdl-24879827
ABSTRACT
OBJECTIVES:
Radiation delivered during CT is a major concern, especially for individuals undergoing repeated screening. We aimed to compare a new ultra-low-dose algorithm called Veo with the gold standard filtered back projection (FBP) for detecting pulmonary asbestos-related conditions.SETTING:
University Hospital CHU G. Montpied, Clermont-Ferrand, FrancePARTICIPANTS:
Asbestos-exposed workers were recruited following referral to screening for asbestos-related conditions. Two acquisitions were performed on a 64-slice CT the gold standard FBP followed by Veo reconstruction. OUTCOMEMEASURES:
Two radiologists independently assessed asbestos-related abnormalities, pulmonary nodules, radiation doses and image quality (noise).RESULTS:
We included 27 asbestos-exposed workers (63.3±6.5â years with 11.9±9.7â years of asbestos exposure). We observed 297 pleural plaques in 20 participants (74%). All patients (100%) had pulmonary nodules, totalling 167 nodules. Detection rates did not differ for pleural plaques (Veo 87% vs FBP 97%, NS), pleural thickening (100% for both) and pulmonary nodules (80% for both). Interstitial abnormalities were depicted less frequently with Veo than FBP. False negative and false positive did not exceed 2.7%. Compared with FBP, Veo decreased the radiation dose up to 87% (Veo 0.23±0.07 vs FBP 1.83±0.88â mSv, p<0.001). The objective image noise also decreased with Veo as much as 23% and signal-to-noise ratio increased up to 33%.CONCLUSIONS:
A low-dose CT with Veo reconstruction substantially reduced radiation. Veo compared favourably with FBP in detecting pleural plaques, pleural thickening and pulmonary nodules. These results should be confirmed on a larger sample size before the use of Veo in clinical routine practice in asbestos-related conditions, especially regarding the low prevalence of interstitial abnormalities in this study. TRIAL REGISTRATION NUMBER NCT01955018.Palavras-chave
Texto completo:
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Base de dados:
MEDLINE
Assunto principal:
Asbestose
/
Doses de Radiação
/
Algoritmos
/
Exposição à Radiação
Tipo de estudo:
Diagnostic_studies
/
Observational_studies
/
Prognostic_studies
/
Risk_factors_studies
Limite:
Humans
/
Middle aged
Idioma:
En
Revista:
BMJ Open
Ano de publicação:
2014
Tipo de documento:
Article
País de afiliação:
França