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Magnetic resonance imaging of the brain and skull of sheep with cerebral coenurosis

Manunta, Maria Lucia Gabriella M. and Evangelisti, Maria Antonietta and Burrai, Giovanni P. and Columbano, Nicolò and Ligios, Ciriaco and Varcasia, Antonio and Scala, Antonio and Sanna Passino, Eraldo (2012) Magnetic resonance imaging of the brain and skull of sheep with cerebral coenurosis. American Journal of Veterinary Research, Vol. 73 (12), p. 1913-1918. ISSN 0002-9645. Article.

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DOI: 10.2460/ajvr.73.12.1913

Abstract

Objective: To determine MRI characteristics of the skulls and brains of sheep with chronic cerebral coenurosis (CC) caused by naturally acquired Taenia multiceps infection.
Animals: 33 sheep with CC and 10 healthy control sheep.
Procedures: Sheep underwent MRI of the head. Volumes of the cranial cavity and rostral and caudal fossas of the cranial cavity were determined. For CC-affected sheep, the number, location, and volume of T. multiceps cysts were determined and the percentage volumes of cysts in the cranial cavity and rostral and caudal fossas of the cranial cavity were calculated. Focal and diffuse abnormalities of cranial bones in CC-affected sheep were identified. Brain edema and hemorrhage and signs of increased cranial pressure (ICP) in MRI images were determined.
Results: Volumes of the cranial cavity and rostral and caudal fossas of the cranial cavity were significantly larger for CC-affected sheep versus healthy control sheep. Total volumes of cysts ranged from 4.40% to 46.93% in cranial cavities of sheep, 4.12% to 51.53% in rostral fossas of cranial cavities of sheep, and 15.24% to 68.30% in caudal fossas of cranial cavities of sheep. Moderate to severe diffuse cranial bone abnormalities and signs of increased ICP in MRI images were detected in 21 and 24 sheep, respectively, and were positively correlated with cyst volumes.
Conclusions and Clinical Relevance: Results suggested that cranial cavity volume and morphological abnormalities can be detected in sheep with CC. These changes may reflect abnormalities in ossification of the cranial bones secondary to chronically increased ICP caused by development of T. multiceps cysts.

Item Type:Article
ID Code:9326
Status:Published
Refereed:Yes
Uncontrolled Keywords:MRI,
Subjects:Area 07 - Scienze agrarie e veterinarie > VET/09 Clinica chirurgica veterinaria
Area 07 - Scienze agrarie e veterinarie > VET/06 Parassitologia e malattie parassitarie degli animali
Divisions:002 Altri enti e centri di ricerca del Nord Sardegna > Istituto zooprofilattico sperimentale della Sardegna, Sassari
001 Università di Sassari > 01-a Nuovi Dipartimenti dal 2012 > Medicina Veterinaria
Publisher:American Veterinary Medical Association
ISSN:0002-9645
Deposited On:21 Nov 2013 11:02

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