Computed tomography in neurocysticercosis.

Minguetti, Guilberto; Ferreira, Marlus Vinicius Costa

doi:10.1136/jnnp.46.10.936

Cited by 77 publications

(25 citation statements)

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“…Computerised tomography as a diagnostic method is widely used in human and veterinary medicine, providing useful data on the wall thickness of organs such as the urinary bladder and the gallbladder, as well as on the size and shape of stones or tumours in those organs (Laato et al 2001, Gore et al 2002, Pavlidis et al 2002, Rickes & Ocran 2002. In the field of parasitic infection, computerised tomography has proved suitable for the diagnosis of hydatid infections and for checking the efficacy of therapy (Minguetti & Ferreira 1983, Liu et al 1993, Ramos et al 2001, Kilani & El Hammami 2002. In relation to fish, the technique is used primarily for the detection of fish bones that pose a problem in human nutrition (Palme et al 1999), but there are some data on its use in diagnosing skeletal and swimbladder abnormalities of ornamental fish also (Love & Lewbart 1997, Bakal et al 1998, Garland et al 2002, Weisse et al 2002.…”

Section: Introductionmentioning

confidence: 99%

Comparative study of X-ray computerised tomography and conventional X-ray methods in diagnosis of swimbladder infection in eels caused by Anguillicola crassus

et al. 2004

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To date, swimbladder lesions due to Anguillicola crassus infection of the European eelAnguilla anguilla have so far been studied only by conventional X-ray methods. This is the first study to report the use of computerised tomography (CT) for studying lesions induced by anguillicolosis. Of 50 eels caught by electrofishery from Lake Balaton, Hungary, in autumn 2002 and pre-selected by a conventional X-ray method, 22 specimens were examined with a Siemens Somatom Plus S40 spiral CT scanner. Tomograms, radiographs and photographs of 5 of these, showing anguillicolosis-induced swimbladder lesions of varying severity, are presented. Computerised tomograms provide information on the inner structure, air content and wall thickness of the swimbladder as well as on the number of worms it contains. When the swimbladder is not severely affected or not completely filled with worms, computerised tomography provides adequate data on the shape of the swimbladder, thickness of the swimbladder wall and the location of worms in the lumen. However, in more severe cases, i.e. when the swimbladder is tightly packed with worms or contains no air as a result of wallthickening, this method fails to determine the number and location of helminths or the thickness of the swimbladder wall.KEY WORDS: European eel · Anguillicola crassus · Swimbladder infection · Pathological changes · X-ray computerised tomography · Conventional X-ray Resale or republication not permitted without written consent of the publisher

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Section: Introductionmentioning

confidence: 99%

Comparative study of X-ray computerised tomography and conventional X-ray methods in diagnosis of swimbladder infection in eels caused by Anguillicola crassus

et al. 2004

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“…A Hounsfield value of more than 80 represents calcification (7,25). However, in this study the CT-HU values varied from 30 to 492 (positive phase median The overlay of segmented color-classified lesions over CT images clearly demarcates the scolex from the body of the cyst and normal brain tissue, which promotes clear differentiation between different body structures of the cyst.…”

Section: Discussionmentioning

confidence: 72%

Correlation of phase values with CT hounsfield and R2* values in calcified neurocysticercosis

Roy

Verma

Awasthi

et al. 2011

Magnetic Resonance Imaging

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Purpose: To correlate phase and R2* derived from susceptibility-weighted magnetic resonance imaging (MRI) with computed tomography-Hounsfield (CT-HU) values in calcified neurocysticercosis and to evaluate phase imaging in the assessment of calcified neurocysticercosis. Materials and Methods:Thirty-five patients with 52 calcified lesions underwent both CT and MRI. Phase and R2* were calculated from multi-echo 3D-T2-star-weighted-angiography data. MRI and CT data were coregistered using mutual information. Spearman's correlation was performed between quantitative phase and CT-HU and R2* values. The Mann-Whitney U-test was used to see differences between CT-HU and R2* values from corresponding positive and negative phase regions. Results:The median values of CT-HU and R2* from regions with positive and negative phase were found to be 142.10 (range: 41.89-491.75) and 68.5/sec (range: 20-110/sec) and 137.30 (range: 30.83-458.88) and 69/sec (range: 0-110/sec), respectively. There was a significant correlation of positive phase values with corresponding CT-HU and R2* values. In addition, there was a significant correlation of R2* and CT-HU with negative phase values. Conclusion:We conclude that there is a significant correlation between negative and positive phase with CT-HU and R2* values, suggesting that the CT hyperdense lesion may have both calcium and other minerals, which can be differentiated using phase imaging. Conventional MRI should include phase imaging to detect calcified neurocysticercosis.

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“…CT is very helpful in NC because it is a safe, precise and noninvasive method with more than 95% accuracy to define number, localization and evolutive stages of the parasites, especially in the parenchymal form of the disease. In developing countries where MRI machines are not always available, and considering the fact that calcifications are the main radiologic finding in NC, CT is still the most performed and useful examination [13][14][15][16] .…”

Section: Discussionmentioning

confidence: 99%

Interrelationship between radiologic findings and prognosis of epilepsy in children with neurocysticercosis

Ferreira

Zanardi

et al. 2002

Arq. Neuro-Psiquiatr.

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-Introduction: Epileptic manifestations of Neurocysticercosis (NC) appear to depend on number and localization of the cysts. The objective of this study was to investigate the relationship between CT findings, number of parasites and the evolutive stage of the cysts, and the prognosis of epilepsy in children with NC. Method: We studied 28 patients with the parenchymal form of NC, considering: epilepsy duration; seizure frequency before and after AED treatment; seizure control; number of AED and recurrence after AED withdrawal. Clinical information was crossed with the number of lesions and disease activity in univariate comparison. Results: The analysis of the clinical data in relation to the number of lesions and disease activity showed no statistical difference among the variables (p>0.05). Conclusion: We conclude that the course of epilepsy due to NC in childhood cannot be based exclusively on the number or stage of the parasites.KEY WORDS: neurocysticercosis, childhood epilepsy, radiology, prognosis.Interrelação entre achados radiológicos e o prognóstico da epilepsia em crianças com neurocisticercose Interrelação entre achados radiológicos e o prognóstico da epilepsia em crianças com neurocisticercose Interrelação entre achados radiológicos e o prognóstico da epilepsia em crianças com neurocisticercose Interrelação entre achados radiológicos e o prognóstico da epilepsia em crianças com neurocisticercose Interrelação entre achados radiológicos e o prognóstico da epilepsia em crianças com neurocisticercose RESUMO -Introdução: As manifestações epilépticas da neurocisticercose (NC) parecem depender do número e localização das lesões. O objetivo desse estudo foi investigar a relação entre os achados de CT, número de parasitas e estágio evolutivo dos cistos, com o prognóstico da epilepsia em crianças. Método: Nós estudamos 28 pacientes com a forma parenquimatosa da NC, considerando: duração da epilepsia; freqüência de crises antes e após o tratamento com DAE; aquisição de controle; número de drogas e recorrência. Esses aspectos foram correlacionados com o número de lesões e atividade da doença em análise estatística univariada. Resultados: A análise dos dados clínicos em relação ao número de lesões e atividade da doença não revelou diferenças estatisticamente significativas (p>0,05). Conclusão: Concluímos que o curso da epilepsia por NC na infância não pode se basear exclusivamente no número ou estágio dos parasitas. PALAVRAS-CHAVE: neurocisticercose, prognóstico, epilepsia na infância, radiologia.

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Computed tomography in neurocysticercosis.

Cited by 77 publications

References 1 publication

Comparative study of X-ray computerised tomography and conventional X-ray methods in diagnosis of swimbladder infection in eels caused by Anguillicola crassus

Comparative study of X-ray computerised tomography and conventional X-ray methods in diagnosis of swimbladder infection in eels caused by Anguillicola crassus

Correlation of phase values with CT hounsfield and R2* values in calcified neurocysticercosis

Interrelationship between radiologic findings and prognosis of epilepsy in children with neurocysticercosis

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