scholarly journals Three-Dimensional Whole Breast Segmentation in Sagittal and Axial Breast MRI With Dense Depth Field Modeling and Localized Self-Adaptation for Chest-Wall Line Detection

2019 ◽  
Vol 66 (6) ◽  
pp. 1567-1579 ◽  
Author(s):  
Dong Wei ◽  
Susan Weinstein ◽  
Meng-Kang Hsieh ◽  
Lauren Pantalone ◽  
Despina Kontos
Keyword(s):  
Chest Wall ◽  
Three Dimensional ◽  
Breast Mri ◽  
Line Detection ◽  
Field Modeling ◽  
Breast Segmentation ◽  
Self Adaptation

Three-dimensional whole breast segmentation in sagittal MR images with dense depth field modeling and localized self-adaptation

2017 ◽  
Author(s):  
Dong Wei ◽  
Susan Weinstein ◽  
Meng-Kang Hsieh ◽  
Lauren Pantalone ◽  
Mitchell Schnall ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Mr Images ◽  
Field Modeling ◽  
Breast Segmentation ◽  
Self Adaptation

scholarly journals Automated chest wall line detection for whole-breast segmentation in sagittal breast MR images

2013 ◽  
Vol 40 (4) ◽  
pp. 042301 ◽  
Author(s):  
Shandong Wu ◽  
Susan P. Weinstein ◽  
Emily F. Conant ◽  
Mitchell D. Schnall ◽  
Despina Kontos
Keyword(s):  
Chest Wall ◽  
Line Detection ◽  
Mr Images ◽  
Breast Mr ◽  
Breast Segmentation

Three-dimensional geometry and flow field modeling of forming fabrics

2009 ◽  
Vol 24 (3) ◽  
pp. 342-350 ◽  
Author(s):  
Ali Vakil ◽  
Arash Olyaei ◽  
Sheldon I. Green
Keyword(s):  
Flow Field ◽  
Three Dimensional ◽  
Field Modeling

Variable spatiotemporal resolution three-dimensional dixon sequence for rapid dynamic contrast-enhanced breast MRI

2014 ◽  
Vol 40 (6) ◽  
pp. spcone-spcone
Author(s):  
Manojkumar Saranathan ◽  
Dan W. Rettmann ◽  
Brian A. Hargreaves ◽  
Jafi A. Lipson ◽  
Bruce L. Daniel
Keyword(s):  
Three Dimensional ◽  
Breast Mri ◽  
Spatiotemporal Resolution ◽  
Dynamic Contrast Enhanced ◽  
Contrast Enhanced

scholarly journals Three-Dimensional Printing PEEK Implant: A Novel Choice for the Reconstruction of Chest Wall Defect

2019 ◽  
Vol 107 (3) ◽  
pp. 921-928 ◽  
Author(s):  
Lei Wang ◽  
Lijun Huang ◽  
Xiaofei Li ◽  
Daixing Zhong ◽  
Dichen Li ◽  
...  
Keyword(s):  
Chest Wall ◽  
Three Dimensional ◽  
Wall Defect ◽  
Three Dimensional Printing ◽  
Chest Wall Defect ◽  
Dimensional Printing

scholarly journals Respiratory dynamics during laughter

2001 ◽  
Vol 90 (4) ◽  
pp. 1441-1446 ◽  
Author(s):  
Mario Filippelli ◽  
Riccardo Pellegrino ◽  
Iacopo Iandelli ◽  
Gianni Misuri ◽  
Joseph R. Rodarte ◽  
...  
Keyword(s):  
Chest Wall ◽  
Lung Volume ◽  
Dynamic Compression ◽  
Three Dimensional ◽  
Normal Subjects ◽  
Average Frequency ◽  
Abdominal Pressure ◽  
Sudden Increase ◽  
Lung Volumes ◽  
Transdiaphragmatic Pressure

Lung and chest wall mechanics were studied during fits of laughter in 11 normal subjects. Laughing was naturally induced by showing clips of the funniest scenes from a movie by Roberto Benigni. Chest wall volume was measured by using a three-dimensional optoelectronic plethysmography and was partitioned into upper thorax, lower thorax, and abdominal compartments. Esophageal (Pes) and gastric (Pga) pressures were measured in seven subjects. All fits of laughter were characterized by a sudden occurrence of repetitive expiratory efforts at an average frequency of 4.6 ± 1.1 Hz, which led to a final drop in functional residual capacity (FRC) by 1.55 ± 0.40 liter ( P < 0.001). All compartments similarly contributed to the decrease of lung volumes. The average duration of the fits of laughter was 3.7 ± 2.2 s. Most of the events were associated with sudden increase in Pes well beyond the critical pressure necessary to generate maximum expiratory flow at a given lung volume. Pga increased more than Pes at the end of the expiratory efforts by an average of 27 ± 7 cmH2O. Transdiaphragmatic pressure (Pdi) at FRC and at 10% and 20% control forced vital capacity below FRC was significantly higher than Pdi at the same absolute lung volumes during a relaxed maneuver at rest ( P < 0.001). We conclude that fits of laughter consistently lead to sudden and substantial decrease in lung volume in all respiratory compartments and remarkable dynamic compression of the airways. Further mechanical stress would have applied to all the organs located in the thoracic cavity if the diaphragm had not actively prevented part of the increase in abdominal pressure from being transmitted to the chest wall cavity.

Three-dimensional optical analysis of chest wall motion

1994 ◽  
Vol 77 (3) ◽  
pp. 1224-1231 ◽  
Author(s):  
G. Ferrigno ◽  
P. Carnevali ◽  
A. Aliverti ◽  
F. Molteni ◽  
G. Beulcke ◽  
...  
Keyword(s):  
Chest Wall ◽  
Wall Motion ◽  
Geometric Model ◽  
Three Dimensional ◽  
Clinical Analysis ◽  
Abdominal Pressure ◽  
Abdominal Muscles ◽  
Online Computation ◽  
Chest Wall Motion ◽  
The Subject

A method for kinematic analysis of chest wall motion is presented, based on a television-image processor that allows a three-dimensional assessment of volume change of the trunk by automatically computing the coordinates of several passive markers placed on relevant landmarks of the thorax and abdomen. The parallel computation used for the image processing allows for a real time recognition of the passive markers with the necessary accuracy. A geometric model also allows the online computation of the contribution to the chest volume by the different parts. For this purpose, the model presented here is based on 54 tetrahedrons that can be grouped into 9 compartments and 3 sections representing 1) upper thorax (mainly reflecting the action of neck and parasternal muscles and the effect of pleural pressure), 2) lower thorax (mainly reflecting the action of diaphragm and the effect of pleural and abdominal pressure), and 3) abdomen (mainly reflecting the actions of diaphragm and abdominal muscles). By this model, the volume can also be split into three vertical sections pointing out asymmetries between the right and left sides. The method is noninvasive, nonionizing, and leaves the subject maximum freedom of movement during the test, thus being suitable for routine clinical analysis. The monitoring of the subject can be prolonged in time and can be performed in different postures: standing, sitting, and supine. The method was tested on 12 healthy subjects showing its good accuracy, reliability, and reproducibility.

scholarly journals Development of a quantitative method for analysis of breast density based on three-dimensional breast MRI

2008 ◽  
Vol 35 (12) ◽  
pp. 5253-5262 ◽  
Author(s):  
Ke Nie ◽  
Jeon-Hor Chen ◽  
Siwa Chan ◽  
Man-Kwun I. Chau ◽  
Hon J. Yu ◽  
...  
Keyword(s):  
Breast Density ◽  
Quantitative Method ◽  
Three Dimensional ◽  
Breast Mri
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