PURPOSE This paper studies the feasibility of developing an automatic anatomy segmentation (AAS) system in clinical radiology and demonstrates its operation on clinical 3D images. METHODS The AAS system, the authors are developing consists of two main parts: object recognition and object delineation. As for recognition, a hierarchical 3D scale-based multiobject method is used for the multiobj...

Delineation of drainage basins is a popular terrain analysis method for digital elevation model (DEM) data. Currently, a deterministic delineation method is available in a number of terrain analysis software applications. The method uses elevation data for defining flow directions for each elevation point of a DEM and then follows flow paths from a pour point to all upstream points. The influen...

BACKGROUND Accurate tumor bed delineation after breast-conserving surgery is important. However, consistency among observers on standard postoperative radiotherapy planning CT is low and volumes can be large due to seroma formation. A preoperative delineation of the tumor might be more consistent. Therefore, the purpose of this study was to determine the consistency of preoperative target volum...

Abstract The delineation of ecological red lines (ERLs) is great significance to ensure security and improve the quality environment. However, most current ERL only focuses on natural environment, lacks consideration spatial pattern landscape, there no scientific standard for delineation. From perspective patterns (ESPs), this study proposed an method based gray relational analysis (GRA) minimu...

The fusion of 18-fluorodeoxyglucose (FDG) positron-emission tomography (PET) with computed tomography (CT) offers both anatomic and physiologic delineation of head and neck cancers. PET-CT is useful in the staging of head and neck carcinomas and may identify unsuspected distant metastasis that may alter treatment. PET-CT may also help in target volume delineation during radiotherapy (RT) treatm...

Background Cine displacement encoding with stimulated echoes (DENSE) provides quantitative imaging of tissue motion with high spatial resolution. Recent results have demonstrated that 3D cine DENSE provides resolution sufficient to quantify the mechanics of the right ventricle (RV) [1]. However, RV analysis currently requires manual anatomical delineation on all cine frames. This research exten...

The delineation of P and T waves is important for the interpretation of ECG signals. We propose a Bayesian detection-estimation algorithm for simultaneous detection, delineation, and estimation of P and T waves. A block Gibbs sampler exploits the strong local dependencies in ECG signals by imposing block constraints on the P and T wave locations. The proposed algorithm is evaluated on the annot...