Dr. Dobranowski and his associates are to be highly commended for this excellent manual. I am not aware of a similar text covering the subject. Although all of us perform gastrointestinal studies in a differ­ ent manner, this text provides an excellent overview. The reader will discover that the text is especially well written and focuses on the important issues relating to GI contrast studies. Because Dr. Steven­ son's group performs endoscopic procedures, they are included in the manual. These authors are recognized scholars and leaders in gastrointesti­ nal radiology. Thus, it is easy to understand why the manual is so well done. I am particularly impressed with the emphasis placed on the patient-radiologist relationship before, during, and after completion of a study. All of us who teach gastrointestinal radiology are concerned about the decline in the number of gastrointestinal contrast studies. We are not sure how we can continue to teach our residents the proper tech­ niques and maintain high-quality teaching programs in gastrointesti­ nal radiology. A manual of this type is thus timely and appropriate. The manual will be a valuable addition to the library of all radiologists. It will be particularly useful for residents who are learning how to per­ form GI contrast studies.

1 Introduction.- References.- 2 Upper Gastrointestinal Tract.- Routine Barium Meal.- Esophageal Examination for Specific Problems.- Tube Esophagram.- Postoperative Examination.- Technique of Upper Gastrointestinal Endoscopy.- Evaluation of Swallowing Function and the Palate.- References.- 3 Small Bowel.- Small Bowel Meal.- Double-Contrast Small Bowel Examination.- Small Bowel Enema (Enteroclysis).- References.- 4 Large Bowel.- Double-Contrast Barium Enema.- Single-Contrast Barium Enema.- Flexible Sigmoidoscopy.- Colonoscopy.- Defecography (Evacuating Proctography).- Postoperative Colon.- References.- 5 Pediatric Gastrointestinal Examinations.- Sonography.- Upper GI Contrast Examinations in Children.- Lower GI Tract Contrast Examinations in Children.- Miscellaneous.- References.- 6 Special Procedures.- Sinograms and Fistulograms.- Oral Cholecystography: Operative and Postoperative Cholangiography.- Liver Biopsy.- Percutaneous Transhepatic Cholangiography (PTC).- Endoscopic Retrograde Cholangiopancreatography.- Gastrostomy.- Computed Tomography.- References.- 7 Technical Aspects of Imaging of the Gastrointestinal Tract.- The Technologist's Role.- Technical Factors and Equipment.- The Barium Kitchen.- 8 Pharmacology.- References.- Appendixes.- I Products and Manufacturers.- II Further Reading.