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Quantification of Tortuosity and Fractal Dimension of the Lung Vessels in Pulmonary Hypertension Patients
"... Pulmonary hypertension (PH) can result in vascular pruning and increased tortuosity of the blood vessels. In this study we examined whether automatic extraction of lung vessels from contrast-enhanced thoracic computed tomography (CT) scans and calculation of tortuosity as well as 3D fractal dimensio ..."
Abstract
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dual-energy CT scanner. After lung identification, a vessel enhancement filter was used to estimate the lung vessel centerlines. From these, the vascular trees were generated. For each vessel segment the tortuosity was calculated using distance metric. Fractal dimension was computed using 3D box
Automated Extraction of Aorta and Pulmonary Artery in Mediastinum from 3D Chest X-ray CT Images without Contrast Medium
, 1496
"... This paper proposes a method for automated extraction of the aorta and pulmonary artery (PA) in the me- diastinum of the chest from uncontrasted chest X-ray CT images. Since the aorta and PA areas show low intensity contrast in the mediastinum, it is difficult to extract those areas by a procedure b ..."
Abstract
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Cited by 6 (1 self)
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based on CT values. The proposed method employs a model fitting technique to use shape features of blood vessels for extraction. First, edge voxels are detected based on the standard deviation of CT values. A likelihood image, which shows the degree of "likelihood" on medial axes of vessels
IMAGING
, 1300
"... Nonimaging-based techniques used in diagnosing and monitoring pulmonary function (eg, spirom-etry, arterial blood gas analysis) provide information that is averaged over the communicating airways of both lungs. As a consequence, these techniques are relatively insensitive to subtle changes and, in p ..."
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Nonimaging-based techniques used in diagnosing and monitoring pulmonary function (eg, spirom-etry, arterial blood gas analysis) provide information that is averaged over the communicating airways of both lungs. As a consequence, these techniques are relatively insensitive to subtle changes and
Active Mask Framework for Segmentation of Fluorescence Microscope Images
"... m]]l]]s¶D]]¿÷mB]iv]b]oD]m¶¨]iv]§]iv]r]j]t¿rv]]irj]]t]]m] / | ap]]r¿]ÎNy]s¶D]]mb¶r]ix} Û]Ix]]rd]mb]} p—N]t]o%ism] in]ty]m] / || Û]Is]¡uÎc]rN]]riv]nd]p]*N]m]st¶ I always bow to Śri ̄ Śāradāmbā, the limitless ocean of the nectar of compassion, who bears a rosary, a vessel of nectar, the symbol of ..."
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of knowledge and a book in Her lotus hands. Dedicated to the Lotus Feet of the revered Sadguru. This thesis presents a new active mask (AM) framework and an algorithm for segmenta-tion of digital images, particularly those of punctate patterns from fluorescence microscopy. Fluorescence microscopy has greatly
i A TRANSIENT COMPUTATIONAL FLUID DYNAMIC STUDY OF A LABORATORY-SCALE FLUORINE
"... Fluorine gas is produced industrially by electrolysing hydrogen fluoride in a potassium acid fluoride electrolyte. Fluorine is produced at the carbon anode, while hydrogen is produced at the mild-steel cathode. The fluorine produced has a wide range of uses, most notably in the nuclear industry wher ..."
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where it is used to separate 235U and 238U. The South African Nuclear Energy Corporation (Necsa) is a producer of fluorine and requested an investigation into the hydrodynamics of their electrolysis cells as part of a larger national initiative to beneficiate more of South Africa’s large fluorspar
BDRS PRICE DESCRIPTOR,
"... This report focuses on the evidence about the health.consequences of smoking for women, and is intended to serve.the public health and medical communities as 'a unified source of existing scientific research. The major issues about tobacco use and women's health are examined, including tre ..."
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This report focuses on the evidence about the health.consequences of smoking for women, and is intended to serve.the public health and medical communities as 'a unified source of existing scientific research. The major issues about tobacco use and women's health are examined, including
CERTIFICATE OF APPROVAL
, 2014
"... Treatment plan optimization for rotating-shield brachytherapy ..."
unknown title
"... Abstract Radiotherapy (RT), used for the treatment of cancers, such as lung cancer, lymphoma, breast cancer, bone marrow transplantation, and esophageal cancer, causes the exposure of lungs to radiation. Since the lungs are very sensitive to ionizing radiation, radiation-induced lung diseases due t ..."
Abstract
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-converting enzyme (ACE) inhibitors were effective in preventing radiation-induced lung injury in some animal studies, this result was confirmed clinically by a few studies. Its mechanism of action is not clear, but it was suggested that this result could result from their vasodilator effect on the vessel wall
