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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

Both the posterior-oblique VRT (a) and the coronal MaxIP (b) images demonstrate an intra-lobar sequestration in the left lower lobe of a 3-month-old child. There is a large (systemic) arterial feeding vessel originating from the abdominal aorta. Venous drainage of the sequestrated lobe is conventional into the pulmonary vein. Abnormal tissue can be seen within the left lower lobe on the MinIP image (c). Scanning parameters: 80 kV, 47 eff mAs, 60 ref mAs, 0.70 CTDIvol, 13 DLP
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Fig9: Both the posterior-oblique VRT (a) and the coronal MaxIP (b) images demonstrate an intra-lobar sequestration in the left lower lobe of a 3-month-old child. There is a large (systemic) arterial feeding vessel originating from the abdominal aorta. Venous drainage of the sequestrated lobe is conventional into the pulmonary vein. Abnormal tissue can be seen within the left lower lobe on the MinIP image (c). Scanning parameters: 80 kV, 47 eff mAs, 60 ref mAs, 0.70 CTDIvol, 13 DLP

Mentions: Pulmonary sequestration presents as a non-functioning mass of pulmonary tissue that has its own aberrant systemic arterial supply, originating from the thoracic or abdominal aorta but not connected to the tracheobronchial tree. Pulmonary sequestration can be extra-lobar, where the focal pulmonary mass is encapsulated within its own pleura, having a systemic venous drainage and usually located in the posterior aspect of the lower thorax (Fig. 8). Alternatively, the sequestration can be intra-lobar, where the lesion is sited within the visceral pleura commonly found in the posterior segment of the lower lobe, often seen on the left and often associated with recurrent infections (Fig. 9). Venous drainage is conventional in intra-lobar sequestration (whilst extra-lobar sequestration has an anomalous systemic venous drainage) [27, 29]. CT angiography with 3D reconstruction aids mapping of the anomalous vasculature and distinguishes between extra-lobar and intra-lobar sequestrations [31].Fig. 8


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

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

Both the posterior-oblique VRT (a) and the coronal MaxIP (b) images demonstrate an intra-lobar sequestration in the left lower lobe of a 3-month-old child. There is a large (systemic) arterial feeding vessel originating from the abdominal aorta. Venous drainage of the sequestrated lobe is conventional into the pulmonary vein. Abnormal tissue can be seen within the left lower lobe on the MinIP image (c). Scanning parameters: 80 kV, 47 eff mAs, 60 ref mAs, 0.70 CTDIvol, 13 DLP
© Copyright Policy
Related In: Results  -  Collection

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getmorefigures.php?uid=PMC3369117&req=5

Fig9: Both the posterior-oblique VRT (a) and the coronal MaxIP (b) images demonstrate an intra-lobar sequestration in the left lower lobe of a 3-month-old child. There is a large (systemic) arterial feeding vessel originating from the abdominal aorta. Venous drainage of the sequestrated lobe is conventional into the pulmonary vein. Abnormal tissue can be seen within the left lower lobe on the MinIP image (c). Scanning parameters: 80 kV, 47 eff mAs, 60 ref mAs, 0.70 CTDIvol, 13 DLP
Mentions: Pulmonary sequestration presents as a non-functioning mass of pulmonary tissue that has its own aberrant systemic arterial supply, originating from the thoracic or abdominal aorta but not connected to the tracheobronchial tree. Pulmonary sequestration can be extra-lobar, where the focal pulmonary mass is encapsulated within its own pleura, having a systemic venous drainage and usually located in the posterior aspect of the lower thorax (Fig. 8). Alternatively, the sequestration can be intra-lobar, where the lesion is sited within the visceral pleura commonly found in the posterior segment of the lower lobe, often seen on the left and often associated with recurrent infections (Fig. 9). Venous drainage is conventional in intra-lobar sequestration (whilst extra-lobar sequestration has an anomalous systemic venous drainage) [27, 29]. CT angiography with 3D reconstruction aids mapping of the anomalous vasculature and distinguishes between extra-lobar and intra-lobar sequestrations [31].Fig. 8

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