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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 Posterior oblique VRT image of a 2-month-old child shows a right-sided aortic arch with mirror branching pattern demonstrated. Scanning parameters: 80 kV, 62 mAs, 0.70 CTDIvol, 8 DLP. b Axial MaxIP image (i) of a 2-year-old child shows a right dominant aortic arch with a Kommerell’s diverticulum and an aberrant left subclavian artery seen on the VRT image (ii). A patent arterial duct connects to the left pulmonary artery, completing a vascular ring around the trachea that is mildly compressed due to a dilated oesophagus seen in (i). Scanning parameters: 80 kV, 33 eff mAs, 150 ref mAs, 1.15 CTDIvol, 20 DLP
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Fig19: a Posterior oblique VRT image of a 2-month-old child shows a right-sided aortic arch with mirror branching pattern demonstrated. Scanning parameters: 80 kV, 62 mAs, 0.70 CTDIvol, 8 DLP. b Axial MaxIP image (i) of a 2-year-old child shows a right dominant aortic arch with a Kommerell’s diverticulum and an aberrant left subclavian artery seen on the VRT image (ii). A patent arterial duct connects to the left pulmonary artery, completing a vascular ring around the trachea that is mildly compressed due to a dilated oesophagus seen in (i). Scanning parameters: 80 kV, 33 eff mAs, 150 ref mAs, 1.15 CTDIvol, 20 DLP

Mentions: The first is a right aortic arch with a mirror image branching pattern, in which patients are usually asymptomatic as the trachea is not compromised (Fig. 19a). The second type is a right aortic arch with an aberrant left subclavian artery (Fig. 19b). Patients are symptomatic if the abnormality is associated with a large Kommerell’s diverticulum, in which the left ligamentum arteriosum develops an aneurysm at the origin of the left subclavian artery [3, 36, 37]. MDCT angiography can provide a comprehensive evaluation of this anomaly with 3D rendered display of the vasculature together with central airway and lung parenchyma, which may be compressed.Fig. 19


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

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

a Posterior oblique VRT image of a 2-month-old child shows a right-sided aortic arch with mirror branching pattern demonstrated. Scanning parameters: 80 kV, 62 mAs, 0.70 CTDIvol, 8 DLP. b Axial MaxIP image (i) of a 2-year-old child shows a right dominant aortic arch with a Kommerell’s diverticulum and an aberrant left subclavian artery seen on the VRT image (ii). A patent arterial duct connects to the left pulmonary artery, completing a vascular ring around the trachea that is mildly compressed due to a dilated oesophagus seen in (i). Scanning parameters: 80 kV, 33 eff mAs, 150 ref mAs, 1.15 CTDIvol, 20 DLP
© Copyright Policy
Related In: Results  -  Collection

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getmorefigures.php?uid=PMC3369117&req=5

Fig19: a Posterior oblique VRT image of a 2-month-old child shows a right-sided aortic arch with mirror branching pattern demonstrated. Scanning parameters: 80 kV, 62 mAs, 0.70 CTDIvol, 8 DLP. b Axial MaxIP image (i) of a 2-year-old child shows a right dominant aortic arch with a Kommerell’s diverticulum and an aberrant left subclavian artery seen on the VRT image (ii). A patent arterial duct connects to the left pulmonary artery, completing a vascular ring around the trachea that is mildly compressed due to a dilated oesophagus seen in (i). Scanning parameters: 80 kV, 33 eff mAs, 150 ref mAs, 1.15 CTDIvol, 20 DLP
Mentions: The first is a right aortic arch with a mirror image branching pattern, in which patients are usually asymptomatic as the trachea is not compromised (Fig. 19a). The second type is a right aortic arch with an aberrant left subclavian artery (Fig. 19b). Patients are symptomatic if the abnormality is associated with a large Kommerell’s diverticulum, in which the left ligamentum arteriosum develops an aneurysm at the origin of the left subclavian artery [3, 36, 37]. MDCT angiography can provide a comprehensive evaluation of this anomaly with 3D rendered display of the vasculature together with central airway and lung parenchyma, which may be compressed.Fig. 19

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