A novel framework for rapid diagnosis of COVID-19 on computed tomography scans

AbstractSince the emergence of COVID-19, thousands of people undergo chest X-ray and computed tomography scan for its screening on everyday basis. This has increased the workload on radiologists, and a number of cases are in backlog. This is not only the case for COVID-19, but for the other abnormalities needing radiological diagnosis as well. In this work, we present an automated technique for rapid diagnosis of COVID-19 on computed tomography images. The proposed technique consists of four primary steps: (1) data collection and normalization, (2) extraction of the relevant features, (3) selection of the most optimal features and (4) feature classification. In the data collection step, we collect data for several patients from a public domain website, and perform preprocessing, which includes image resizing. In the successive step, we apply discrete wavelet transform and extended segmentation-based fractal texture analysis methods for extracting the relevant features. This is followed by application of an entropy controlled genetic algorithm for selection of the best features from each feature type, which are combined using a serial approach. In the final phase, the best features are subjected to various classifiers for the diagnosis. The proposed framework, when augmented with the Naive Bayes classifier, yields the best accuracy of 92.6%. The simulation results are supported by a detailed statistical analysis as a proof of concept.

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Extensions of the Sphenoid Sinus

Neurosurgery ◽

10.1227/01.neu.0000367619.24800.b1 ◽

2010 ◽

Vol 66 (4) ◽

pp. 797-816 ◽

Cited By ~ 90

Author(s):

Jian Wang ◽

Sharatchandra Bidari ◽

Kohei Inoue ◽

Hong Yang ◽

Albert Rhoton

Keyword(s):

Computed Tomography ◽

Sphenoid Sinus ◽

Middle Cranial Fossa ◽

Cranial Base ◽

Sellar Region ◽

Computed Tomography Images ◽

Suprasellar Region ◽

Cranial Fossa ◽

Minimally Invasive Access ◽

Selection Of

Abstract OBJECTIVE The transsphenoidal approach has been extended in recent years from tumors of the sellar region to lesions involving other areas bordering the sphenoid sinus including the cavernous sinus, Meckel's cave, middle cranial fossa, planum sphenoidal, suprasellar region, and clivus. The goal of this study was to examine various pneumatized extensions of the sphenoid sinus that may facilitate extended approaches directed through the sinus. METHODS The sphenoid sinus and its surrounding structures were examined in 18 cadaver heads, and the results were correlated with the findings from 100 computed tomography images of the sinus. The sellar type of the sphenoid sinus in which the pneumatization extended beyond the anterior sellar wall was further classified according to the various extensions of the sinus. METHODS The sphenoid sinus and its surrounding structures were examined in 18 cadaver heads, and the results were correlated with the findings from 100 computed tomography images of the sinus. The sellar type of the sphenoid sinus in which the pneumatization extended beyond the anterior sellar wall was further classified according to the various extensions of the sinus. RESULTS The sellar type of the sphenoid sinus was classified into the following 6 basic types based on the direction of pneumatization: sphenoid body, lateral, clival, lesser wing, anterior, and combined. The recesses and prominences, formed by pneumatization of the sinus, act as “windows” opening from the sinus in different areas of the cranial base and may facilitate minimally invasive access to lesions in the corresponding areas. CONCLUSION The variations in the extensions of pneumatization of the sphenoid sinus may facilitate entry into areas bordering the sphenoid sinus and play a role in the selection of a surgical approach to lesions bordering the sinus.

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Anatomical variations and congenital anomalies of the ribs revisited by multidetector computed tomography

Radiologia Brasileira ◽

10.1590/0100-3984.2019.0131 ◽

2020 ◽

Vol 53 (6) ◽

pp. 413-418

Author(s):

Lucas de Pádua Gomes de Farias ◽

Daniel Cunha Menezes ◽

Igor Schneider Faé ◽

Pedro Henrique Coelho de Arruda ◽

João Manoel Miranda Magalhães Santos ◽

...

Keyword(s):

Computed Tomography ◽

Congenital Anomalies ◽

Multislice Computed Tomography ◽

Anatomical Variations ◽

Lung Parenchyma ◽

Conventional Radiography ◽

Computed Tomography Images ◽

Clinical Syndromes ◽

Pictorial Essay ◽

Chest X Ray

Abstract As they are asymptomatic or have a nonspecific, anatomical variations of the ribs are usually detected as incidental findings on imaging studies. They may be isolated changes or can be related to anomalies or clinical syndromes. Such variations are easily overlooked on conventional radiography and computed tomography if they are not actively investigated, mainly because most indications for a chest X-ray studies aim to evaluate the lung parenchyma and mediastinal structures. The objective of this pictorial essay was to use multislice computed tomography images to illustrate the imaging aspects of the main anatomical variations and congenital anomalies of the ribs.

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An experimental study on dynamic computed tomography images and time-density curves in acute renal failure

Journal of the Korean Radiological Society ◽

10.3348/jkrs.1987.23.6.887 ◽

1987 ◽

Vol 23 (6) ◽

pp. 887

Author(s):

D Y Kim ◽

H S Kang ◽

K M Yeoun ◽

C W Kim ◽

M C Han ◽

...

Keyword(s):

Computed Tomography ◽

Experimental Study ◽

Renal Failure ◽

Acute Renal Failure ◽

Dynamic Computed Tomography ◽

Computed Tomography Images ◽

Time Density

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INTERFERENSI GRAMATIKAL DALAM KUMPULAN CERPEN BIARKAN AKU MEMULAI KARYA NURUL F. HUDA

Jurnal Disastri (Jurnal Pendidikan Bahasa dan Sastra Indonesia) ◽

10.33752/disastri.v1i01.478 ◽

2019 ◽

Vol 1 (01) ◽

pp. 16-23

Author(s):

Zimmatul Liviana

Keyword(s):

Short Stories ◽

Data Collection ◽

Qualitative Method ◽

Language Variation ◽

The Other ◽

Qualitative Descriptive ◽

Ofthe Object ◽

Selection Of ◽

Descriptive Qualitative

The research grammatical interference in a collection ofshort stories Biarkan Aku Memula iwork Nurul F. Hudaisa collection ofshort storiesset in the back that Is start work Let Nurul F. Huda contains many grammatical interference.The problem of this study were(1)how the various morphologi calinterference containedin a collection of short stories Biarkan Aku Memulai work Nurul F. Huda. (2)how the various syntactic interference contained in a collection of short stories Biarkan Aku Memulai work Nurul F. Huda. The purposeof this studyis to describe the morphological and Syntactic interference contained in a collection of short stories Biarkan Aku Memulai work Nurul F. Huda. Sociolinguistics is the study of language variation and use in society. Interference is the event of the use of language elements of one into the other language elements that occur in the speakers themselves. This research uses descriptive qualitative method because to describe the actual realityin order to obtainan accurateand objective. Qualitative descriptive methods were used to analyzethe elements ofa word orphrase that incorporated elements of other languages with the analysis and description of the formulation of the problem is the answer. Data collection techniques using observation techniques, the determination ofthe object of research, the selection of short stories.Based on the analysis of the data in this study can be found that there are six forms of interference morphology, namely (1) the prefix nasal N-sound, (2) the addition of the suffix, (3) the exchange prefix, (4) exchange suffixes, (5) exchange konfiks, (6) removal affixes. While the syntactic interference only on the words and phrases in a sentence. The results of the study it can be concluded that the interference morphology more common than syntactic interference.

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