Overview of Orbital Ultrasonography

Abstract

Ultrasonography contains a wide selection of clinical indications. For instance, when examining a patient with ocular discomfort or pain, clinicians will use ultrasound to ensure a diagnosis of inflammation, orbital myositis, or dacryoadenitis. Imaging is often used to identify retrobulbar tissue, as well as the extraocular muscles, in patients with symptoms and suspected soft tissue enlargement secondary to Graves’ disease. There are various forms of diseases that involve the orbit and therefore the discussion of those disorders are often organized in line with the etiology (e.g., infection, inflammation, neoplasm) or by anatomic location.

A comparative study between 10-MHz and 15-MHz ultrasound probes for retinal evaluation in silicone-oil-filled globes

“…We started the examination using the highest gain of the machine (110 dB in the 15 MHz and 100 dB in the 10 MHz probes) then the gain was re-adjusted to confirm the presence of retinal detachment avoiding echoes induced by other membranes at the interface that would disappear by a slight lowering of the gain. Concomitantly, TGC was adjusted manually to obtain the clearest view for the posterior global wall and avoid artifacts and silicone-induced signal attenuation [ 11 , 12 ] (having maximum values of 30 dB/cm in the 15 MHz and 25.5 dB/cm in the 10 MHz probes).…”

Eye biometry prediction from ultrasound images using convolutional neural networks

“…Sufficient ultrasound gel is applied on the phantom model to ensure acoustic coupling with the probe, thereby reducing acoustic impedance, and enabling clear imaging. We executed two protocols to collect the images used in this dataset [1]. Protocol-I the probe is placed on the phantom surface and navigated to the correct diagnostic planes that can be used for the measurement of the three primary biometric parameters of the eye, namely the horizontal plane, which is used to obtain the transverse diameter), vertical standard plane, which is used to estimate the eye circumference, and the sagittal standard plane, which is used to estimate the optic nerve diameter.…”

The Application of Ultrasound Guidance in Electrodiagnostic Studies – A Narrative Review

“…Few studies have used US to investigate the morphological features of the facial nerve in the healthy population and in patients with idiopathic facial nerve palsy and brachial plexus at supraclavicular fossa could be clearly identified using US. [ 29 30 31 32 33 34 ] Therefore, the application of US guidance in these NCSs should be feasible and the applied electrical stimulation amount is expected to be less under US guidance.…”