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Paediatric multi-detector row chest CT: what you really need to know.

Young C, Xie C, Owens CM - Insights Imaging (2012)

Bottom Line: Paediatric imaging technique/protocol together with radiation dose reduction is discussed in detail.However, users must be vigilant in their imaging techniques to minimise radiation burden, whilst maintaining good image quality.Main Messages • CT examinations should be clinically justified by the referring clinician and radiologist. • MDCT is invaluable for evaluating the central airway, mediastinal structures and lung parenchyma. • MDCT is more sensitive than plain radiographs in detection of structural changes within the lungs.

View Article: PubMed Central - PubMed

Affiliation: Cardio-thoracic Unit, Great Ormond Street Hospital for Children NHS Trust, London, WC1N, 3JH, UK, carolyn.young16@yahoo.co.uk.

ABSTRACT

Background: The emergence of multi-detector row CT (MDCT) has established and extended the role of CT especially in paediatric chest imaging. This has altered the way in which data is acquired and is perceived as the 'gold standard' in the detection of certain chest pathologies. The range of available post-processing tools provide alternative ways in which CT images can be manipulated for review and interpretation in order to enhance diagnostic accuracy.

Methodology: Paediatric imaging technique/protocol together with radiation dose reduction is discussed in detail. The use of different post-processing tools to best demonstrate the wide range of important congenital anomalies and thoracic pathologies is outlined and presented pictorially.

Conclusion: MDCT with its isotropic resolution and fast imaging acquisition times reduces the need for invasive diagnostic investigations. However, users must be vigilant in their imaging techniques to minimise radiation burden, whilst maintaining good image quality. Main Messages • CT examinations should be clinically justified by the referring clinician and radiologist. • MDCT is invaluable for evaluating the central airway, mediastinal structures and lung parenchyma. • MDCT is more sensitive than plain radiographs in detection of structural changes within the lungs.

No MeSH data available.


Related in: MedlinePlus

a VRT images (i–iii) demonstrate the presence of a vascular ring, and its relationship with the trachea is seen in the air bronchogram (iv). The trachea is significantly compressed by the dominant right aortic arch and the aberrant left subclavian artery passing behind the trachea and oesophagus. Scanning parameters: 80 kV, 35 eff mAs, 112 ref mAs, 0.44 CTDIvol, 6 DLP. b A surface rendered air bronchogram of the tracheobronchial tree in a 5-year-old child with bronchial atresia in the affected left upper lobe. Scanning parameters: 100 kV, 46 eff mAs, 50 ref mAs, 1.53 CTDIvol, 34 DLP
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Fig4: a VRT images (i–iii) demonstrate the presence of a vascular ring, and its relationship with the trachea is seen in the air bronchogram (iv). The trachea is significantly compressed by the dominant right aortic arch and the aberrant left subclavian artery passing behind the trachea and oesophagus. Scanning parameters: 80 kV, 35 eff mAs, 112 ref mAs, 0.44 CTDIvol, 6 DLP. b A surface rendered air bronchogram of the tracheobronchial tree in a 5-year-old child with bronchial atresia in the affected left upper lobe. Scanning parameters: 100 kV, 46 eff mAs, 50 ref mAs, 1.53 CTDIvol, 34 DLP

Mentions: 3D volume rendering (VRT) is a computerised surface-rendering technique that reconstructs the volumetric axial data set into a 3D display by applying a colour map to the different tissue types identified within the data set. 3D VRT imaging is widely used to demonstrate structural and vascular anatomy and in particular their spatial relationships to adjacent structures (Fig. 4a). By applying a transparent algorithm (to simulate air) to the data set the entire tracheobronchial tree can be displayed as a 3D ‘CT bronchogram’ (Fig. 4b).Fig. 4


Paediatric multi-detector row chest CT: what you really need to know.

Young C, Xie C, Owens CM - Insights Imaging (2012)

a VRT images (i–iii) demonstrate the presence of a vascular ring, and its relationship with the trachea is seen in the air bronchogram (iv). The trachea is significantly compressed by the dominant right aortic arch and the aberrant left subclavian artery passing behind the trachea and oesophagus. Scanning parameters: 80 kV, 35 eff mAs, 112 ref mAs, 0.44 CTDIvol, 6 DLP. b A surface rendered air bronchogram of the tracheobronchial tree in a 5-year-old child with bronchial atresia in the affected left upper lobe. Scanning parameters: 100 kV, 46 eff mAs, 50 ref mAs, 1.53 CTDIvol, 34 DLP
© Copyright Policy
Related In: Results  -  Collection

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Fig4: a VRT images (i–iii) demonstrate the presence of a vascular ring, and its relationship with the trachea is seen in the air bronchogram (iv). The trachea is significantly compressed by the dominant right aortic arch and the aberrant left subclavian artery passing behind the trachea and oesophagus. Scanning parameters: 80 kV, 35 eff mAs, 112 ref mAs, 0.44 CTDIvol, 6 DLP. b A surface rendered air bronchogram of the tracheobronchial tree in a 5-year-old child with bronchial atresia in the affected left upper lobe. Scanning parameters: 100 kV, 46 eff mAs, 50 ref mAs, 1.53 CTDIvol, 34 DLP
Mentions: 3D volume rendering (VRT) is a computerised surface-rendering technique that reconstructs the volumetric axial data set into a 3D display by applying a colour map to the different tissue types identified within the data set. 3D VRT imaging is widely used to demonstrate structural and vascular anatomy and in particular their spatial relationships to adjacent structures (Fig. 4a). By applying a transparent algorithm (to simulate air) to the data set the entire tracheobronchial tree can be displayed as a 3D ‘CT bronchogram’ (Fig. 4b).Fig. 4

Bottom Line: Paediatric imaging technique/protocol together with radiation dose reduction is discussed in detail.However, users must be vigilant in their imaging techniques to minimise radiation burden, whilst maintaining good image quality.Main Messages • CT examinations should be clinically justified by the referring clinician and radiologist. • MDCT is invaluable for evaluating the central airway, mediastinal structures and lung parenchyma. • MDCT is more sensitive than plain radiographs in detection of structural changes within the lungs.

View Article: PubMed Central - PubMed

Affiliation: Cardio-thoracic Unit, Great Ormond Street Hospital for Children NHS Trust, London, WC1N, 3JH, UK, carolyn.young16@yahoo.co.uk.

ABSTRACT

Background: The emergence of multi-detector row CT (MDCT) has established and extended the role of CT especially in paediatric chest imaging. This has altered the way in which data is acquired and is perceived as the 'gold standard' in the detection of certain chest pathologies. The range of available post-processing tools provide alternative ways in which CT images can be manipulated for review and interpretation in order to enhance diagnostic accuracy.

Methodology: Paediatric imaging technique/protocol together with radiation dose reduction is discussed in detail. The use of different post-processing tools to best demonstrate the wide range of important congenital anomalies and thoracic pathologies is outlined and presented pictorially.

Conclusion: MDCT with its isotropic resolution and fast imaging acquisition times reduces the need for invasive diagnostic investigations. However, users must be vigilant in their imaging techniques to minimise radiation burden, whilst maintaining good image quality. Main Messages • CT examinations should be clinically justified by the referring clinician and radiologist. • MDCT is invaluable for evaluating the central airway, mediastinal structures and lung parenchyma. • MDCT is more sensitive than plain radiographs in detection of structural changes within the lungs.

No MeSH data available.


Related in: MedlinePlus