Table l. — Radiographic technique for turtle examinations. 



'DV = Dorsoventral projection. 



(Nuclear Enterprises, Inc., San Carlos, Calif.) on 

 an electrometer'^ at 300 V collection potential. 



Results 



Adequate clearing of food residue was obtained 

 after the subjects were prepared in the manner 

 described in Methods. The experimental animals 



'Model 602 Electrometer, Keithley Co., Cleveland, Ohio. 



were quite small (0.3-0.4 kg) and good resolution 

 and detail are a necessity if mucosal detail is to be 

 adequately examined and appraised. Excellent 

 detail of the esophagus, stomach, and small intes- 

 tinal mucosa was obtained by using industrial 

 grade film while adequate detail was obtained on 

 par speed medical film. The radiologic anatomy 

 of the esophagus, stomach, and small intestine 

 correlated well with the findings noted at gross 

 necropsy of turtles of similar age and size that had 



Figure l. — Dorsoventral view of a 15 cm carapace length, 400 g, 8-mo-old loggerhead turtle made on the 

 second day after barium instillation. Industrial grade film was used for this exposure. 1 — stomach, 2 — proximal 

 small bowel, 3 — tracheal air shadow, 4 — lungs. The arrowheads demonstrate the longitudinal mucosal pattern 

 in the proximal small bowel (1.8 x). 



966 



