Detection of pulmonary nodules at paediatric CT: maximum intensity projections and axial source images are complementary.
Pediatr Radiol
; 43(7): 820-6, 2013 Jul.
Article
de En
| MEDLINE
| ID: mdl-23344916
ABSTRACT
BACKGROUND:
Maximum intensity projection (MIP) images might be useful in helping to differentiate small pulmonary nodules from adjacent vessels on thoracic multidetector CT (MDCT).OBJECTIVE:
The aim was to evaluate the benefits of axial MIP images over axial source images for the paediatric chest in an interobserver variability study. MATERIALS ANDMETHODS:
We included 46 children with extra-pulmonary solid organ malignancy who had undergone thoracic MDCT. Three radiologists independently read 2-mm axial and 10-mm MIP image datasets, recording the number of nodules, size and location, overall time taken and confidence.RESULTS:
There were 83 nodules (249 total reads among three readers) in 46 children (mean age 10.4 ± 4.98 years, range 0.3-15.9 years; 24 boys). Consensus read was used as the reference standard. Overall, three readers recorded significantly more nodules on MIP images (228 vs. 174; P < 0.05), improving sensitivity from 67% to 77.5% (P < 0.05) but with lower positive predictive value (96% vs. 85%, P < 0.005). MIP images took significantly less time to read (71.6 ± 43.7 s vs. 92.9 ± 48.7 s; P < 0.005) but did not improve confidence levels.CONCLUSION:
Using 10-mm axial MIP images for nodule detection in the paediatric chest enhances diagnostic performance, improving sensitivity and reducing reading time when compared with conventional axial thin-slice images. Axial MIP and axial source images are complementary in thoracic nodule detection.
Texte intégral:
1
Collection:
01-internacional
Base de données:
MEDLINE
Sujet principal:
Radiographie thoracique
/
Amélioration d'image radiographique
/
Tomodensitométrie
/
Nodule pulmonaire solitaire
/
Positionnement du patient
/
Tumeurs du poumon
Type d'étude:
Diagnostic_studies
/
Prognostic_studies
Limites:
Adolescent
/
Child
/
Child, preschool
/
Female
/
Humans
/
Infant
/
Male
Langue:
En
Journal:
Pediatr Radiol
Année:
2013
Type de document:
Article
Pays d'affiliation:
Royaume-Uni