Three-year clinical experience with VQ SPECT for diagnosing pulmonary embolism: diagnostic performance.
Clin Imaging
; 38(6): 831-5, 2014.
Article
in En
| MEDLINE
| ID: mdl-24852679
ABSTRACT
Ventilation-perfusion (VQ) single-photon emission computed tomography (SPECT) comprised the administration of SmartVent (n=386) or Technegas (n=1564) and 200 MBq (99m)Tc-MAA. 1406 scans were normal, 462 showed PE, 61 showed a singular subsegmental mismatched defect, 21 scans were non-diagnostic. 26% of scans performed with Technegas showed PE, compared to 15% with SmartVent. VQ SPECT had a sensitivity of 95.7%, specificity 98.6%, positive predictive value 95.7%, negative predictive value 98.6%. A normal VQ SPECT scan implied a more than ten-fold lower cause-specific mortality (1 in 1406) than a scan showing PE (1 in 116). NPV of a negative D-dimer was 94.3%.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Pulmonary Embolism
/
Tomography, Emission-Computed, Single-Photon
/
Ventilation-Perfusion Ratio
Type of study:
Diagnostic_studies
/
Prognostic_studies
Limits:
Female
/
Humans
/
Male
/
Middle aged
Language:
En
Journal:
Clin Imaging
Journal subject:
DIAGNOSTICO POR IMAGEM
Year:
2014
Document type:
Article