tailieunhanh - Báo cáo khoa học: "Ultrasonographic measurement of optic nerve sheath diameter in normal dogs"

Tuyển tập các báo cáo nghiên cứu khoa học quốc tế về bệnh thú y đề tài: Ultrasonographic measurement of optic nerve sheath diameter in normal dogs | J. Vet. Sci. 2003 4 3 265-268 JOURNAL OF Veterinary Science Ultrasonographic measurement of optic nerve sheath diameter in normal dogs Hee-Chun Lee Ho-Jung Choi Min-Cheol Choi and Jung-Hee Yoon Department of Radiology College of Veterinary Medicine Seoul National University Seoul 151-742 Korea This study was carried out to assess the feasibility of ultrasonographic measurements of the optic nerve sheath diameter ONSD in normal dogs and evaluate the effect of breed sex body weight and age on biometry of ONSD. The ONSDs were evaluated in 15 dogs 10-50 months old with normal eye 7 Yorkshire terrier and 8 Maltese . Ultrasonographic measurements of the ONSD were carried out at a constant position located 5 mm behind the optic disc. Eyes were collected immediately after euthanasia and were used for saline immersion technique and direct measurement by calipers for biometry of ONSD. In this study there was no significant difference of ONSD between the left and the right eyes and was no significant difference among ONSD values obtained from ultrasonographical method saline immersion technique and direct measurement k . Also there was no correlations between ONSD and sex body weight and age but was significant between the mean ONSD of Yorkshire terrier and Maltese p . The mean ONSD of Yorkshire terrier was mm and Maltese was mm. This study suggests that ultrasonographic measurements is useful method for biometry of the ONSD in normal dogs and provides baseline information for the study of evaluating ONSD in various breeds and diagnosing several diseases with the change of the ONSD. Key words Ultrasonographic measurement optic nerve sheath diameter yorkshire terrier maltese Introduction Ocular biometry was one of methods to measure the axial dimensions of the eye and determine the position of intraocular components by ultrasound. It is one of the early uses of ultrasound in human opthalmology 1 . Biometry of the eye has been useful for the .