Items tagged “hrct”
9 results found
Article
Crazy paving
Crazy paving refers to the appearance of ground-glass opacities with superimposed interlobular septal thickening and intralobular septal thickening, seen on chest HRCT or standard CT chest. It is a non-specific finding that can be seen in a number of conditions.
Pathology
Etiology
Common cau...
Article
Cryptogenic organizing pneumonia
Cryptogenic organizing pneumonia (COP) is a disease of unknown etiology characterized on imaging by multifocal ground glass opacifications and/or consolidation. A wide variety of infectious as well as noninfectious causes may result in a similar histologic pattern.
Terminology
Organizing pneum...
Article
Intralobular septa
The intralobular septa (sing: septum) are delicate strands of connective tissue separating adjacent pulmonary acini and primary pulmonary lobules. They are continuous with the interlobular septa which surround and define the secondary pulmonary lobules.
See also
HRCT terminology
Article
Pulmonary acinus
The pulmonary acinus is an anatomical unit of lung supplied by a first order respiratory bronchiole, 4-8 mm in diameter. Each secondary pulmonary lobule usually contains 3-25 acini, and adjacent acini are separated by incomplete intralobular septa.
Clinical importance
The component respiratory...
Article
Centrilobular region
The centrilobular region, in context of the lungs and HRCT, refers to the central portion of the secondary pulmonary lobule, around the central pulmonary artery and bronchiole.
See also
HRCT terminology
Article
Pulmonary parenchymal bands
Parenchymal bands are a HRCT finding. They can be commonly encountered among patients with asbestosis.
They are typically over 2 cm in length (up to 5 cm), 1-3 mm thick and run through the lung parenchyma and usually extend from a visceral pleural surface 6. They are formed in a number of ways ...
Article
Mosaic attenuation pattern in lung
Mosaic attenuation is a descriptive term used in describing a patchwork of regions of differing pulmonary attenuation on CT imaging. It is a non-specific finding, although is associated with the following:
obstructive small airways disease: low attenuation regions are abnormal and reflect ...
Article
Atoll sign (lungs)
The atoll sign or reversed halo sign refers to focal ground-glass opacity with a peripheral ring of consolidation which may be complete or incomplete. The sign was originally described in organizing pneumonia but can also occur in infections, infarction, granulomatous disease, inflammation and t...
Article
Causes of air trapping on high-resolution CT chest (mnemonic)
Mnemonics to remember the causes of air trapping on HRCT chest are:
HSBC
Mnemonic
H: hypersensitivity pneumonitis
S: sarcoidosis
B: bronchiolitis obliterans
C: cystic fibrosis/bronchiectasis
A useful way to remember the mnemonic is recalling that once you are with HSBC, you are "trapped" ...
Unable to process the form. Check for errors and try again.