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AssigneesUniversite Paris Descartes, Intrasense, Assistance Publique-Hopitaux de Paris
InventorsGuillaume CHASSAGNON, Marie-Pierre REVEL, Stéphane CHEMOUNY, Amandine RENÉ
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The invention relates to a method for automatically processing at least one image slice of a given part of at least one lung of a patient suffering from a pathology that causes a bronchial infection by diffuse dilatation of the bronchial tubes of the lungs, the method comprising steps of segmenting (102) the at least one image slice of the given part of the lung, in order to produce a histogram characterising the pulmonary density of the given part of the lunch, by means of the voxels of the at least one image slice, each voxel being assocaited with a given pulmonary density; calculating (104) a threshold, from the histogram, corresponding to a threshold pulmonary density, based on at least one characteristic of the histogram, a first characteristic being the mode of the histogram; determining (106) from the at least one image slice of the given part of the lung, a pulmonary volume having a pulmonnar density higher or lower than the calculatedd threshold, corresponding to the sum of the voxels having a pulmonary density higher or lower than the calculated threshold; and calculating (110) an automatic score on the basis of the determined pulmonary volume, in order to monitor the evolution of the broncial infection of the patient.
Method for automatically processing at least one image slice of a given part of at least one lung of a patient with a pathology that induces bronchial damage by diffuse dilatation of the bronchi of the lungs, the method comprising steps of:
Method according to the preceding claim, wherein the threshold is calculated using the following formula:
Method according to the preceding claim, wherein N is a predetermined value comprised in an interval ranging from 1 to 2.
Method according to one of the preceding claims, in which the automatic score is a ratio between:
Method according to one of the preceding claims, wherein:
Method according to one of the preceding claims, wherein the images are taken over both lungs, or over one or more lobes of the lungs.
Method according to one of the preceding claims, wherein the images are acquired when the patient inspires.
Method according to one of the preceding claims, wherein the score is also a function of a third characteristic, which is the skewness coefficient of the histogram, and a fourth characteristic, which is the kurtosis coefficient, and is calculated using the following formula
Method according to one of the preceding claims, wherein a threshold is calculated (104) which is only a function of one or more characteristics of the histogram.
Computer program product comprising program code instructions for performing the steps of the method according to one of the preceding claims, when this program is executed by at least one processor.
Device for automatically processing at least one image slice of a given part of at least one lung of a patient with a pathology that induces bronchial damage by diffuse dilatation of the bronchi of the lungs, the device comprising:
Dependencies are inferred from the claim text.