Lecture 21: Equine Respiratory Imaging Flashcards
Horse vs dog/SA: what lung do you see in each species with right lateral radiograph of lung
horse- see right lung- see whatever lung is closest to cassette
Dog/SA: left lung
what are some signs of issues in sinus cavity of horses
- Unilateral/bilateral nasal discharge
- Abnormal upper airway noise
- Exophthalmos
- Epiphora
if this is young horse what likely dx, older horse like dx
young- tooth root abscess
Old- sinus cyst
identify 1-5
- Ethmoid
- Frontal sinus
- Fluid lines
- Intraorbital canal-nerves and vessels
- Maxillary sinus
what is the benefit of CT of horse URT vs radiographs
no superimposition
identify 1-3
- Nasal cavity
- Tooth root
- Maxillary sinus
what are cons of CT
- Specialized equipment
- Limited availability
MRI has better __detail than CT
soft tissue
what wrong here- MRI of nasal cavity. Identify 1-2
- Soft tissue mass
- Fluid
Likely nasal tumor occluding draining of maxillary sinus
what Modality is this and what is wrong
nuclear medicine- bone scan looking for bone remodeling/osteoblastic activity
Hot spot over tooth- tooth root abscess
what modality. Evaluating salivary glands. What does it tell you
scintigraphy
Left salivary gland working, right not
identify 1-7
- Tympanic bulla
- Basiphenoid bone
- Basioccipital bone
- Stylohyoid bone
- Guttural pouch
- Soft palate
- Epiglottis
what wrong here. Identify 1-2
Dorsal displacement of soft palate
1. Soft palate- should be ventral to epiglottis
2. Epiglottis
what wrong. Identify 1
Entrapment of epiglottis- blunted
1. Epiglottis
identify 1
guttural pouch
horse presents with nasal discharge, do X-ray what wrong
abnormality in guttural pouch-chondroid present
horse presents with bleeding from nose and hx of head trauma. What wrong
Fluid filled guttural pouch due to fracture of basohyoid and basooccipital bone
what wrong
extraluminal compression of trachea
what images are taken to see horse thorax
3-4 views
Cranial dorsal
Cranioventral
Caudodorsal
Caudoventral
what view is this and identify 1-6
- Trachea
- Scapula
- Humerus
- Cranial mediastinum
- Aortic root
- Heart
View: cranioventral
what view is this identify 1-9
- Rib
- Aorta
- Trachea
- End principle on bronchi
- Pulmonary artery
- Pulmonary vein
- Caudal vena cava
- Diaphragm
- Heart
View: craniodorsal
what view is this identify 1-4
- Spine
- Aorta
- Pulmonary vessels
- Diaphragm
what view is this identify 1-7
- Aorta
- Trachea
- Left atrium
- Caudal vena cava
- Heart
- Overlying elbow
- Diaphragm
View : caudoventral
what wrong
pneumonia
what wrong
Pleural fluid- loss of cardiac silhouette
foal presents with fever, respiratory signs. What likely dx based on x-ray and signalment
pulmonary abscess
Normal or abnormal ultrasound of lung
normal
normal or abnormal ultrasound of lung
Abnormal- irregular lung line- fluid and not next to body wall
what are the mainstay modalities of airway evaluation in horses
rads and ultrasound
