Diagnostic quality of ultrasound-guided fine-needle aspirates samples from the canine liver and spleen is not significantly affected by using 22-, 23-, and 25-gauge needles (在超音波導引下進行的犬隻肝臟和脾臟細針抽吸樣本的診斷品質，並不會因使用22號、23號或25號針而顯著影響)