Transorbital echoencephalography in cattle

Area of Science:

• Veterinary diagnostic imaging
• Bovine neurology
• Ultrasound applications in livestock

Background:

• Transorbital echoencephalography (TOE) is a non-invasive neuroimaging technique.
• Establishing specific criteria for TOE in cattle is crucial for its clinical application.
• Magnetic resonance (MR) imaging can inform the development of ultrasound-based diagnostic methods.

Purpose of the Study:

• To establish diagnostic criteria for transorbital echoencephalography in cattle.
• To evaluate the experimental application of TOE in bovine veterinary practice.
• To determine the efficacy of TOE for diagnosing specific neurological conditions in calves.

Main Methods:

• Quantitative investigations using magnetic resonance (MR) imaging to determine feasibility.
• Establishing specific transducer positioning angles for Japanese Black, F1, and Holstein cattle breeds.
• Clinical application of TOE in live calves (antemortem) and postmortem examinations.
• Utilizing TOE to detect cerebral parenchyma and lateral ventricles.

Main Results:

• Transorbital echoencephalography is applicable to cattle under 3 months of age.
• Specific transducer positioning protocols were defined for different cattle breeds.
• Cerebral parenchyma and lateral ventricles were successfully visualized both antemortem and postmortem.
• The study successfully diagnosed hydrocephalus and hydranencephaly using antemortem TOE.

Conclusions:

• Transorbital echoencephalography is a viable diagnostic tool for young cattle.
• Established criteria allow for reliable application of TOE in bovine practice.
• TOE is especially effective for diagnosing bovine hydranencephaly, offering a valuable clinical imaging method.