Thin collimation MDCT during a single breath hold at full inspiration generates isotropic
volumetric high resolution data, allowing contiguous 3D visualization of the lung
parenchyma, with a capacity to create high quality 2D and 3D reformatted images. Complementary
acquisition during forced expiratory manoeuvre helps detect expiratory air trapping
and tracheobronchomalacia.
Lernziele:
1- Minimum intensity projection (mIP) improves detection and characterization of ground
glass, linear, reticular and cystic patterns, whereas maximum intensity projection
(MIP) allows the detection of small nodules, improving differentiation between perilymphatic,
miliary and centrilobular distribution.
2- Multiplanar reformations (MPRs), virtual endoscopy and bronchography improve the
assessment of airway stenosis, and increase the detection rate of bronchiectasis and
reader's confidence as to the distribution of bronchiectasis.
3- MIP improves the detection and the assessment of mucoïd impactions and infectious
bronchiolitis features (tree in bud sign), whereas mIP improves the assessment of
obliterative bronchiolitis features (decreased lung attenuation and air trapping).
Korrespondierender Autor: Grenier P
University Pierre et Marie Curie, Paris
E-Mail: philippe.grenier@psl.ap-hop-paris.fr
