Automated CT registration tool improves sensitivity to change in ventricular volume in patients with shunts and drains

Published on Jan 3, 2020in British Journal of Radiology3.039
路 DOI :10.1259/BJR.20190398
Ghiam Yamin9
Estimated H-index: 9
(UCSD: University of California, San Diego),
Piyaphon Cheecharoen1
Estimated H-index: 1
(UCSD: University of California, San Diego)
+ 5 AuthorsNikdokht Farid19
Estimated H-index: 19
(UCSD: University of California, San Diego)
Sources
Abstract
Objective:Computerized tomography (CT) is the mainstay imaging modality for assessing change in ventricular volume in patients with ventricular shunts or external ventricular drains (EVDs). We eval...
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1997
1 Author (John Gorcsan)
References23
Newest
#1Trevor J. Huff (Creighton University)H-Index: 5
#2Parker E. Ludwig (Creighton University)H-Index: 7
Last. Justin Cramer (UNMC: University of Nebraska Medical Center)H-Index: 5
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Purpose Hydrocephalus is a clinically significant condition which can have devastating consequences if left untreated. Currently available methods for quantifying this condition using CT imaging are unreliable and prone to error. The purpose of this study is to investigate the clinical utility of using convolutional neural networks to calculate ventricular volume and explore limitations.
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#1Mohamed Najm (U of C: University of Calgary)H-Index: 10
#2Hulin Kuang (U of C: University of Calgary)H-Index: 13
Last. Wu Qiu (U of C: University of Calgary)H-Index: 20
view all 9 authors...
Abstract Background and objective Non-Contrast Computer Tomography (NCCT) and CT angiography (CTA) are the most used and widely acceptable imaging modalities in clinical practice for the diagnosis and treatment of acute ischemic stroke (AIS) patients. Brain extraction of CT/CTA images plays an essential role in stroke imaging research. There is no robust automated brain extraction method in the literature that is well established for both NCCT and CTA images. Thus, a validated and automated brai...
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The aim of this study was to investigate the use of one magnetic resonance image-processing tool, FSL, in its ability to perform automated segmentation of computed tomographic images of the brain.Head computed tomography (CT) images were brain extracted and segmented using the FSL tools BET and FAST, respectively. The products of segmentation were analyzed by histogram. The impact of image intensity inhomogeneity correction was investigated using simulated bias fields, 14 routine head CT scans, ...
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Maximum likelihood or restricted maximum likelihood (REML) estimates of the parameters in linear mixed-effects models can be determined using the lmer function in the lme4 package for R. As for most model-fitting functions in R, the model is described in an lmer call by a formula, in this case including both fixed- and random-effects terms. The formula and data together determine a numerical representation of the model from which the profiled deviance or the profiled REML criterion can be evalua...
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BACKGROUND: Insertion of an External Ventricular Drain (EVD) is arguably one of the most common and important lifesaving procedures in neurologic intensive care unit. Various forms of acute brain injury benefit from the continuous intracranial pressure (ICP) monitoring and cerebrospinal fluid (CSF) diversion provided by an EVD. After insertion, EVD monitoring, maintenance and troubleshooting essentially become a nursing responsibility. METHODS: Articles pertaining to EVD placement, management, a...
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#1Gregorio Rodr铆guez-Boto (Complutense University of Madrid)H-Index: 8
#2M. Rivero-Garv铆aH-Index: 6
Last. Javier M谩rquez-RivasH-Index: 8
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Resumen Introduccion Muchos procesos encefalicos que causan la muerte de los pacientes que los presentan estan mediados por hipertension intracraneal (HIC). La historia natural de la misma conduce inexorablemente a esta muerte encefalica. El objetivo de este trabajo estriba en realizar una revision de la fisiopatologia cerebral y de la monitorizacion de la presion intracraneal (PIC). Desarrollo El estudio de las ondas de PIC, su monitorizacion y el registro de las mismas nos informan sobre la ex...
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#1Lan Eng Poh (Agency for Science, Technology and Research)H-Index: 3
#2Varsha Gupta (Agency for Science, Technology and Research)H-Index: 12
Last. Wieslaw L. Nowinski (Agency for Science, Technology and Research)H-Index: 33
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Accurate segmentation of ventricular cerebrospinal fluid (CSF) regions in stroke CT images is important in assessing stroke patients. Manual segmentation is subjective, time consuming and error prone. There are currently no methods dedicated to extracting ventricular CSF regions in stroke CT images. 102 ischemic stroke CT scans (slice thickness between 3 and 6 mm, voxel size in the axial plane between 0.390 and 0.498 mm) were acquired. An automated template-based algorithm is proposed to extract...
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#1Mahua Dey (U of C: University of Chicago)H-Index: 24
#2Jennifer Jaffe (U of C: University of Chicago)H-Index: 7
Last. Issam A. Awad (U of C: University of Chicago)H-Index: 91
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Hemorrhagic stroke accounts for only 10% to 15% of all strokes; however, it is associated with devastating outcomes. Extension of intracranial hemorrhage (ICH) into the ventricles or intraventricular hemorrhage (IVH) has been consistently demonstrated as an independent predictor of poor outcome. In most circumstances the increased intracranial pressure and acute hydrocephalus caused by ICH is managed by placement of an external ventricular drain (EVD). We present a systematic review of the liter...
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#1Bruce E. Lehnert (UW: University of Washington)H-Index: 11
#2Habib Rahbar (UW: University of Washington)H-Index: 21
Last. James R. Fink (UW: University of Washington)H-Index: 16
view all 6 authors...
The study objective was to determine the relative diagnostic utility of the radiographic shunt series (SS), head computed tomography (CT), and nuclear imaging performed in our Emergency Department (ED) for evaluating ventricular shunt malfunction. We retrospectively reviewed medical records, head CT (if performed), and nuclear imaging (if performed) for all ED patients with suspected shunt malfunction from 2002 to 2007 who underwent plain film shunt evaluation (296 cases/186 individuals) to dete...
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#1Jimin LiuH-Index: 14
#2Su HuangH-Index: 14
Last. Wieslaw L. NowinskiH-Index: 33
view all 6 authors...
Rationale and Objectives Accurate segmentation of the brain ventricular system on computed tomographic (CT) imaging is useful in neurodiagnosis and neurosurgery. Manual segmentation is time consuming, usually not reproducible, and subjective. Because of image noise, low contrast between soft tissues, large interslice distance, large shape, and size variations of the ventricular system, no automatic method is presently available. The authors propose a model-guided method for the automated segment...
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Cited By1
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#1Hyun Woo Goo (UOU: University of Ulsan)H-Index: 34
OBJECTIVE To evaluate the usefulness of the ventricular volume percentage quantified using three-dimensional (3D) brain computed tomography (CT) data for interpreting serial changes in hydrocephalus. MATERIALS AND METHODS Intracranial and ventricular volumes were quantified using the semiautomatic 3D threshold-based segmentation approach for 113 brain CT examinations (age at brain CT examination 鈮 18 years) in 38 patients with hydrocephalus. Changes in ventricular volume percentage were calculat...
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