NDLI: Volumetric lung nodule segmentation in thoracic CT scan using freehand sketch

Content Provider	IET Digital Library
Author	Kumar, S. Pramod Latte, Mrityunjaya V. Siri, Sangeeta K.
Abstract	The authors presented a novel computerised scheme to segment pulmonary nodules using freehand sketch. Here, freehand sketching is considered to identify the location of a nodule and it serves as a natural way and also it provides inferring adaptive information i.e. size, density, texture and mass centre etc. The proposed scheme includes two phases. In first phase using the freehand sketch analysis the multi seed points to select RoI. In the second phase nodule volumetric extraction is done using geometric modelling and implicit surface reconstruction for volumetric analysis. Spherical bins are used for ray triangle intersections and then local implicit surface fitting and blending method for surface reconstruction and depiction. The performance of the proposed scheme is assessed by accuracy and consistency using 112 CT examinations from LIDC. The IoU and ASD were used to assess the discrepancy between proposed method and inter observer agreement in the proposed approach. In estimating the reproducibility, the discrepancy in proposed scheme and the manual contouring by the expert is observed to be on an average of 0.13 ± 0.07 mm and 3.04 ± 1.7 mm respectively. The experiment shows that, the proposed scheme performs reasonably well and demonstrate merit of freehand sketch.
Starting Page	3456
Ending Page	3462
Page Count	7
ISSN	17519659
Volume Number	14
e-ISSN	17519667
Issue Number	Issue 14, Dec (2020)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-ipr/14/14
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-ipr.2020.0671
Journal	IET Image Processing
Publisher Date	2020-09-08
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Biology And Medical Computing Biomedical Imaging/measurement Cancer Computer Vision And Image Processing Technique Computerised Tomography Diagnostic Radiography Freehand Sketch Analysis Freehand Sketching Approach Geometric Modelling Surface Reconstruction Image Recognition Image Reconstruction Image Segmentation Implicit Surface Reconstruction Local Implicit Surface Lung Mass Centre Medical Image Processing Nodule Volumetric Extraction Novel Computerised Scheme Patient Diagnostic Method And Instrumentation Pulmonary Nodule Radiography And Computed Tomography Segment Pulmonary Nodules Size 1.7 Mm Surface Fitting Surface Reconstruction Texture Thoracic CT Scan Time 1.4 S Volumetric Analysis Volumetric Lung Nodule Segmentation Volumetric Nodule Segmentation Performs X-Ray Technique X-Rays And Particle Beam
Content Type	Text
Resource Type	Article
Subject	Signal Processing Electrical and Electronic Engineering Computer Vision and Pattern Recognition Software

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