1. Ultrasound-guided biopsy of the canine liver, kidney, and prostate;Hager;Vet Rad,1985
2. The effects of a unilateral ultrasound-guided renal biopsy on renal function in healthy sedated cats;Drost;Vet Radiol Ultrasound,2000
3. Radiologic diagnosis of renal parenchymal disease;Davidson,1977
4. The abdomen;Farrow,1994
5. Radiology of urogenital diseases in dogs and cats;Ackerman,1983