Magnetic Resonance Imaging of Brain Infarction in Seven Dogs

Thomas, William B.; Sorjonen, Donald C.; Scheuler, Ronald O.; Kornegay, Joe N.

doi:10.1111/j.1740-8261.1996.tb01239.x

Cited by 39 publications

(57 citation statements)

References 14 publications

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“…In several, these were reported as seizure activity by the referring veterinarian but on close examination of the history were more likely to have been acute vestibular episodes. Similar paroxysmal events have previously been reported in dogs with histologically proven infarction 21 . In humans, TIAs are brief episodes of focal loss of brain function attributable to ischemia involving one of the vascular systems and lasting less than 24 h 22 .…”

Section: Discussionsupporting

confidence: 74%

“…In 10 dogs the MRI appearance of the lesions was similar to that reported for cerebellar infarcts and infarcts elsewhere in the brains of dogs 8,21 . Infarcts are most commonly clearly demarcated lesions, which are hyperintense on T 2 ‐weighted images and often wedge shaped with minimal mass effect and often preferential gray matter involvement.…”

Section: Discussionsupporting

confidence: 67%

“…The age distribution in this series is similar to that previously reported, with infarcts typically occurring in middle‐aged to older dogs. Including this study, 28 of 48 (58%) dogs with cerebrovascular disease were male and only 20 of 48 (42%) were females, possibly suggesting an increased risk for males, as also seen in humans 3,5–8,13,21,23–28 . No breed predisposition has been reported for cerebrovascular accident in dogs.…”

Section: Discussionmentioning

confidence: 61%

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Magnetic Resonance Imaging Findings of Presumed Cerebellar Cerebrovascular Accident in Twelve Dogs

McConnell

Garosi

Platt

2005

Vet Radiology Ultrasound

121

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The magnetic resonance imaging (MRI) findings of presumed cerebrovascular accident in 12 dogs are described. Fourteen lesions were seen, commonly (11 of 14) within the gray matter of the cerebellar hemispheres or vermis. Thirteen lesions were hyperintense on T2-weighted images (in 11 dogs) and one was hypointense. Eleven of 14 lesions were within the region supplied by the rostral cerebellar artery or one of its main branches and there was no, or minimal, mass effect. Contrast enhancement was only seen in six lesions and was mild in all. Gradient-echo images provided additional information in two dogs. The appearance of infarction in dogs with diffusion-weighted images (DWI) is similar to that in humans, and provided supportive evidence for the diagnosis of infarction in five dogs. The use of gradient-echo and DWI is recommended for the evaluation of suspected cerebrovascular accidents in dogs. Six of the 12 affected animals were spaniels or spaniel crosses, suggesting a possible breed predisposition.

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Section: Discussionsupporting

confidence: 74%

Section: Discussionsupporting

confidence: 67%

Section: Discussionmentioning

confidence: 61%

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Magnetic Resonance Imaging Findings of Presumed Cerebellar Cerebrovascular Accident in Twelve Dogs

McConnell

Garosi

Platt

2005

Vet Radiology Ultrasound

121

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“…6,11 An aneurysm of the middle cerebral artery was reported in a rhesus macaque (Macaca mulatta) that developed anisocoria. 13 Potential causes of cerebral infarct include atherosclerosis, 4,14,18 septic thromboembolism, 12,18 neoplasia, 18 coagulopathy, 8,18 aberrant parasitic migration or emboli, 18 fat or air emboli from trauma, vasospasm, hypertension, 4,14,18 or other causes of cerebrovascular hemorrhage. 18 In humans, middle cerebral artery ischemia can result from emboli or thrombi from the heart.…”

Section: Discussionmentioning

confidence: 99%

Diagnosis and Treatment of a Cerebral Infarct in a Chimpanzee (Pan Troglodytes)

Fish¹,

Carpenter²,

Kraft³

2004

Journal of Zoo and Wildlife Medicine

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A 29-yr-old chimpanzee (Pan troglodytes) presented after an acute onset of right facial and forearm paresis that progressed to paralysis within 24 hr, with subsequent development of right leg paresis. Magnetic resonance imaging (MRI) of the head revealed an abnormal region of increased signal intensity in the left frontal, parietal, and temporal cerebral hemispheres, corresponding to the vascular territory of the middle cerebral artery, with resultant compression of the left lateral ventricle. The findings were consistent with a cerebral infarct (stroke). MRI is the most sensitive test for early detection of cerebral changes due to ischemia and was essential in obtaining a diagnosis in this case. The chimpanzee responded well to treatment with long-term anticoagulant aspirin and a short, tapered course of prednisone and regained full gross motor function.

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“…Cerebrovascular disease incidence is low in dogs when compared with people 13. Non-haemorrhagic ischaemic infarcts are the most common cerebrovascular accidents in dogs; common sites include the cerebellum, striatocapsular region and thalamus 12 14–18.…”

Section: Discussionmentioning

confidence: 99%

Cerebellar ischaemic infarct: a rare complication of pancreatitis

Hall

Sànchez²,

Gardini³

et al. 2019

Vet Record Case Reports

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A 12-year-old female neutered Jack Russell terrier was presented for further investigation of an acute two-day history of lethargy, inappetence and vomiting. Mild increase in urea and amylase and positive cPLI (Canine pancreatic lipase immunoreactivity) ELISA were present. Abdominal ultrasound revealed an irregular, heterogeneous and diffusely hypoechoic pancreas. Severe pancreatitis with secondary peritonitis was diagnosed. Supportive treatment was started, but the patient developed paradoxical vestibular syndrome. MRI was declined and the patient was euthanased. On histopathological examination renal infarction with evidence of thrombosis and focal cerebellar infarction were present. It is well documented that a hypercoagulable state is a known complication of severe pancreatitis. To the authors’ knowledge this is the first description of suspected thromboembolism secondary to pancreatitis resulting in neurological signs in a dog.

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Magnetic Resonance Imaging of Brain Infarction in Seven Dogs

Cited by 39 publications

References 14 publications

Magnetic Resonance Imaging Findings of Presumed Cerebellar Cerebrovascular Accident in Twelve Dogs

Magnetic Resonance Imaging Findings of Presumed Cerebellar Cerebrovascular Accident in Twelve Dogs

Diagnosis and Treatment of a Cerebral Infarct in a Chimpanzee (Pan Troglodytes)

Cerebellar ischaemic infarct: a rare complication of pancreatitis

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