Small Animal Radiology and Ultrasound: A Diagnostic Atlas and Text

236 Small Animal Radiolo g y and Ultrasono graphy
Fig. 2-226 Sagittal ultrasonogram
of the right thyroid gland in an 8-
year-old spayed female Keeshond
with hypercalcemia. Within the
ovoid thyroid gland (black arrows),
there is a hypoechoic nodule near its
anterior pole (white arrows).
Diagnosis: Parathyroid mass confirmed
as parathyroid tumor.
muscles and laryngeal muscles, or a sensory defect that does not allow the animal to detect
the presence of food within the pharynx. Both liquid barium and barium-impregnated
food should be used when studying animals with oropharyngeal disorders. Again,
because of the complex nature of swallowing, static radiographs rarely produce a definite
diagnosis.
REFERENCES
1. Spencer CP, Ackerman N, Burt JK: The canine lateral thoracic radiograph.
Vet Radiol 1981; 22:262.
2. Forrest LJ: Radiology corner—advantages of the three view thoracic
radiographic examination in instances other than metastasis. Vet
Radiol 1992; 33:340.
3. Biller DS, Myer CW: Case examples demonstrating the clinical utility
of obtaining both right and left lateral thoracic radiographs in
small animals. J Am Anim Hosp Assoc 1987; 23:381.
4. Lang L, Wortman JA, Glickman LT, et al: Sensitivity of radiographic
detection of lung metastases in the dog. Vet Radiol 1986; 27:74.
5. Barthez PY, Hornof WJ, Theon AP, et al: Receiver operating characteristic
curve analysis of the performance of various radiographic
protocols when screening dogs for pulmonary metastases. J Am Vet
Med Assoc 1994; 204:237.
6. Grandage J: Posture, gravity, and radiologic interpretation. J Am Vet
Radiol Soc 1979; 22:80.
7. Ahlberg NE, Hoppe F, Kelter U, et al: A computed tomographic study
of volume and x-ray attenuation of the lungs of beagles in various
body positions. Vet Radiol 1985; 26:43.
8. Pechman RD: Effect of dependency versus nondependency on lung
lesion visualization. Vet Radiol 1987; 28:185.
9. Steyn PF, Green RW: How patient positioning affects radiographic
signs of canine lung disease. Vet Med 1990; 85:796.
10. Grandage J: The radiology of the dog’s diaphragm. J Sm Anim Pract
1974; 15:1.
11. Suter PF: Radiographic examination. In Ettinger SJ, Suter PF, eds:
Canine cardiology. WB Saunders, Philadelphia, 1970; p 40.
12. Suter PF: Thoracic radiography: a text atlas of thoracic diseases in
the dog and cat. Peter F Suter, Wettswil, Switzerland, 1984.
13. Carlisle CH, Thrall DE: A comparison of normal feline thoracic radiographs
made in dorsal versus ventral recumbency. Vet Radiol 1982;
23:3.
14. Ruehl WW, Thrall DE: The effect of dorsal versus ventral recumbency
on the radiographic appearance of the canine thorax. Vet
Radiol 1981; 22:10.
15. Holmes RA, Smith FG, Lewis RE, et al: The effects of rotation on the
radiographic appearance of the canine cardiac silhouette in dorsal
recumbency. Vet Radiol 1985; 26:98.
16. Silverman S, Suter PF: Influence of inspiration and expiration on
canine thoracic radiographs. J Am Vet Med Assoc 1975; 166:502.
17. Godshalk CP: Common pitfalls in radiographic interpretation of the
thorax. Comp Cont Educ Pract Vet 1994; 16:731.
18. Losonsky JM, Kneller SK: Misdiagnosis in normal radiographic
anatomy: eight structural configurations simulating disease entities
in dogs and cats. J Am Vet Med Assoc 1987; 191:109.
19. Fox PR, Bond BR, Peterson ME: Echocardiographic reference values
in healthy cats sedated with ketamine hydrochloride. Am J Vet Res
1985; 46:1479.
20. Rand JS, Reynolds WT, Priest J: Echocardiographic evaluation of
the effects of medetomidine and xylazine in dogs. Aust Vet J 1996;
73:41.
21. Moise NS: Echocardiography. In Fox PR, ed: Canine and feline cardiology.
Churchill Livingstone, New York, 1988; p 114.
22. Nyland TG, Matton JS, Allen AK, et al: Veterinary diagnostic ultrasound.
WB Saunders, Philadelphia, 1995.
23. Thomas WP: Two-dimensional, real-time echocardiography in the
dog: technique and anatomic validation. Vet Radiol 1984; 25:50.
24. Thomas WP, Gaber CE, Jacobs GJ, et al: Recommendations for standards
in transthoracic two-dimensional echocardiography in the dog
and cat. J Vet Intern Med 1993; 7:247.