Daniela Schweizer
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View article: Cheek tooth repulsion aided by computer-assisted surgery in 16 equids
Cheek tooth repulsion aided by computer-assisted surgery in 16 equids Open
This retrospective case series reports on the use of computer-assisted surgery (CAS) to perform cheek tooth repulsion in 16 equids. Thirteen of the 16 subjects in this case series had a mandibular cheek tooth repulsed, and 3 had a maxillar…
View article: Phase‐Contrast Magnetic Resonance Imaging Identifies Low Cerebrospinal Fluid Velocity at the Foramen Magnum in Small Breed Dogs With an Enlarged Ventricular System
Phase‐Contrast Magnetic Resonance Imaging Identifies Low Cerebrospinal Fluid Velocity at the Foramen Magnum in Small Breed Dogs With an Enlarged Ventricular System Open
Background In small breed dogs, enlarged ventricles of the brain are a common finding on magnetic resonance imaging (MRI). In humans, enlarged lateral ventricles are usually the consequence of mesencephalic aqueduct stenosis. Cerebrospinal…
View article: Non-contrast enhanced visualization of the equine foot vasculature in a cadaver model using time-of-flight sequence
Non-contrast enhanced visualization of the equine foot vasculature in a cadaver model using time-of-flight sequence Open
Objective The objective of this study was to establish a non-contrast enhanced MR angiography (NC-MRA) sequence for the equine foot (EF) using a post-mortem angiography model. Materials and methods Time-of-flight (TOF) sequences were teste…
View article: A Dorsal Intramedullary <scp>T2</scp>‐Weighted Hypointense Signal Suggests Haemorrhagic Necrotic Material Indicating Ascending‐Descending Myelomalacia in Dogs
A Dorsal Intramedullary <span>T2</span>‐Weighted Hypointense Signal Suggests Haemorrhagic Necrotic Material Indicating Ascending‐Descending Myelomalacia in Dogs Open
Background Ascending‐descending myelomalacia (ADMM) is a progressive softening of the spinal cord observed in dogs after spinal cord injury (SCI). On histopathology, areas of hemorrhagic necrotic material are found in the central canal and…
View article: Extensive Epidural Hemorrhage Associated with Thoracolumbar Disc Extrusion in French Bulldogs
Extensive Epidural Hemorrhage Associated with Thoracolumbar Disc Extrusion in French Bulldogs Open
(1) Background: Intervertebral disc extrusion may be accompanied by extensive epidural hemorrhage (EEH) and result in spinal cord compression. EEH is more commonly seen in French Bulldogs compared to other breeds. The majority of French Bu…
View article: Isolation of Tumour‐Derived Extracellular Vesicles From the Plasma of Dogs Affected by Intracranial Tumours Showing Heterologous and Cross‐Species Tropism: A Pilot Study
Isolation of Tumour‐Derived Extracellular Vesicles From the Plasma of Dogs Affected by Intracranial Tumours Showing Heterologous and Cross‐Species Tropism: A Pilot Study Open
Canine and human brain tumours exhibit similar incidence rates and prognoses. Recent studies have demonstrated that extracellular vesicles derived from human patients (PDEVs) can be loaded with contrast agents and exhibit tumour tropism in…
View article: Spinal Neuronavigation for Lumbar Plate Fixation in Miniature Breed Dogs
Spinal Neuronavigation for Lumbar Plate Fixation in Miniature Breed Dogs Open
Objective The main aim of this pilot study was to assess the feasibility of spinal neuronavigation for plate fixation of lumbar vertebrae in miniature breed dogs using a surgical navigation system in combination with a custom-made referenc…
View article: Influence of body weight, age, and sex on cerebrospinal fluid peak flow velocity in dogs without neurological disorders
Influence of body weight, age, and sex on cerebrospinal fluid peak flow velocity in dogs without neurological disorders Open
Background Changes in the brain can affect the flow velocity of cerebrospinal fluid (CSF). In humans, the flow velocity of CSF is not only altered by disease but also by age and sex. Such influences are not known in dogs. Hypothesis Peak f…
View article: PCYT1A Missense Variant in Vizslas with Disproportionate Dwarfism
PCYT1A Missense Variant in Vizslas with Disproportionate Dwarfism Open
Disproportionate dwarfism phenotypes represent a heterogeneous subset of skeletal dysplasias and have been described in many species including humans and dogs. In this study, we investigated Vizsla dogs that were affected by disproportiona…
View article: Otitis media and interna with or without polyps in cats: association between meningeal enhancement on postcontrast MRI, cerebrospinal fluid abnormalities, and clinician treatment choice and outcome
Otitis media and interna with or without polyps in cats: association between meningeal enhancement on postcontrast MRI, cerebrospinal fluid abnormalities, and clinician treatment choice and outcome Open
Objectives The aim of this study was to evaluate the association between meningeal enhancement (MgE) and cerebrospinal fluid (CSF) analysis results, their individual association with bacteriology results from affected ear samples and wheth…
View article: Grading of oligodendroglioma in dogs based on magnetic resonance imaging
Grading of oligodendroglioma in dogs based on magnetic resonance imaging Open
Background Oligodendroglioma (OG) accounts for 22% of primary brain tumors in dogs. Oligodendroglioma in dogs is graded as low‐grade (II) or high‐grade (III), based on the presence of microvascular proliferation and necrosis. Objective To …
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Issue Information Open
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View article: Post-mortem Computed Tomographic Angiography in Equine Distal Forelimbs: A Feasibility Study
Post-mortem Computed Tomographic Angiography in Equine Distal Forelimbs: A Feasibility Study Open
In-depth understanding of pathophysiological processes occurring in the vasculature of the equine distal limb is of great importance to improve both diagnostic and therapeutic approaches to diseases. To gain further insights, a model allow…
View article: Can MRI differentiate between ring‐enhancing gliomas and intra‐axial abscesses?
Can MRI differentiate between ring‐enhancing gliomas and intra‐axial abscesses? Open
Gliomas of the brain may appear as expansile ring‐enhancing masses in MRI studies, mimicking the appearance of intra‐axial abscesses. The aims of this study were to compare the MRI features of ring‐enhancing gliomas and intra‐axial brain a…
View article: Feasability of a Frameless Brain Biopsy System for Companion Animals Using Cone-Beam CT-Based Automated Registration
Feasability of a Frameless Brain Biopsy System for Companion Animals Using Cone-Beam CT-Based Automated Registration Open
The aim of the present study was to evaluate the use of a novel intraoperative cone-beam computed tomography (CBCT)-based automated registration system for frameless stereotactic brain biopsy in companion animals. An experimental cadaveric…
View article: Clinical and magnetic resonance imaging features of lymphoma involving the nervous system in cats
Clinical and magnetic resonance imaging features of lymphoma involving the nervous system in cats Open
Background Lymphoma is the most common spinal cord neoplasm and second most common intracranial tumor in cats, but description of specific magnetic resonance imaging (MRI) features is lacking. Objective Describe the clinical and MRI featur…
View article: Outcome of radioiodine therapy for feline hyperthyroidism: fixed dose versus individualized dose based on a clinical scoring system
Outcome of radioiodine therapy for feline hyperthyroidism: fixed dose versus individualized dose based on a clinical scoring system Open
BACKGROUND: Hyperthyroidism is the most frequent endocrinopathy in older cats. To date, there is no consensus on how to best calculate the dose of radioiodine to administer to hyperthyroid cats. AIM: The goals of this study were to compare…
View article: Neuronal current imaging: An experimental method to investigate electrical currents in dogs with idiopathic epilepsy
Neuronal current imaging: An experimental method to investigate electrical currents in dogs with idiopathic epilepsy Open
Background The diagnosis of idiopathic epilepsy (IE) in dogs is based on exclusion of other potential causes of seizures. Recently, a novel magnetic resonance imaging (MRI) sequence that utilizes a variant of the rotary saturation approach…
View article: Increased teat wall thickness in response to machine milking
Increased teat wall thickness in response to machine milking Open
Transiently increased teat wall thickness in response to machine milking has been documented by various methods, including ultrasound. However, correlative ultrasonography and histology to detect the origin of this phenomenon is lacking. T…
View article: Haematomyelia and myelomalacia following an inadvertent thoracic intraspinal injection in a cat
Haematomyelia and myelomalacia following an inadvertent thoracic intraspinal injection in a cat Open
Case summary A 4-month-old cat was presented with acute paraplegia after the referring veterinarian performed a subcutaneous injection (cefovecin and dexamethasone) in the caudodorsal thoracic area, during which the cat suddenly became unc…
View article: Correlative Magnetic Resonance Imaging and Histopathology in Small Ruminant Listeria Rhombencephalitis
Correlative Magnetic Resonance Imaging and Histopathology in Small Ruminant Listeria Rhombencephalitis Open
Background: Listeria rhombencephalitis, infection of the brainstem with Listeria monocytogenes , occurs mainly in humans and farmed ruminants and is associated with high fatality rates. Small ruminants (goats and sheep) are a large animal …
View article: Quantification of cerebrospinal fluid flow in dogs by cardiac‐gated phase‐contrast magnetic resonance imaging
Quantification of cerebrospinal fluid flow in dogs by cardiac‐gated phase‐contrast magnetic resonance imaging Open
Background Cerebrospinal fluid (CSF) flow in disease has been investigated with two‐dimensional (2D) phase‐contrast magnetic resonance imaging (PC‐MRI) in humans. Despite similar diseases occurring in dogs, PC‐MRI is not routinely performe…
View article: Technical set‐up and case illustrations of orthopaedic cone beam computed tomography in the standing horse
Technical set‐up and case illustrations of orthopaedic cone beam computed tomography in the standing horse Open
Summary Computed tomography (CT) is a widely utilised cross‐sectional imaging modality in the horse. However, most CT imaging of horses’ limbs has so far been restricted to applications under general anaesthesia. CT configurations that all…
View article: Whole Genome Sequencing Indicates Heterogeneity of Hyperostotic Disorders in Dogs
Whole Genome Sequencing Indicates Heterogeneity of Hyperostotic Disorders in Dogs Open
Craniomandibular osteopathy (CMO) and calvarial hyperostotic syndrome (CHS) are proliferative, non-neoplastic disorders affecting the skull bones in young dogs. Different forms of these hyperostotic disorders have been described in many do…
View article: Cone-beam computed tomography of the head in standing equids
Cone-beam computed tomography of the head in standing equids Open
CBCT is a valuable imaging modality for the equine head. Advantages of the O-arm® compared to a conventional multi-slice helical CT for imaging of the head in standing equids include the rapid image acquisition, the gantry's mobility in al…
View article: Radiographic Identification of Osseous Cyst- Like Lesions in the Distal Phalanx in 22 Lame Thoroughbred Horses Managed Conservatively and Their Racing Performance
Radiographic Identification of Osseous Cyst- Like Lesions in the Distal Phalanx in 22 Lame Thoroughbred Horses Managed Conservatively and Their Racing Performance Open
Reasons for performing study: To investigate the racing performance of Thoroughbred horses with osseous cyst-like lesions (OCLLs) in the distal phalanx causing lameness and treated conservatively. Objectives: To assess horses' ability to r…
View article: Palpation accuracy of thoracolumbar spinous processes using T13 and the 13th pair of ribs as landmarks in dogs
Palpation accuracy of thoracolumbar spinous processes using T13 and the 13th pair of ribs as landmarks in dogs Open
There is a lack of studies of methods for the clinical assessment of spinal orientation in dogs. Our objective was to determine the accuracy of the identification of the thoracolumbar spinous process by palpation using T13 and the associat…