Radionuclides in Urology.- A. Introduction.- B. Renal Clearances.- C. Renal Function Studies with External Scintillation Probe.- D. Renal and Urinary Tract Function Utilizing a Gamma Scintillation Camera.- E. Renal Failure.- F. Hydronephrosis.- G. Renal Hypertension.- H. Renal Transplantation.- J. Radionuclides in the Pediatric Patient.- K. Radionuclides in Bladder Pathology Including Vesicoureteral Reflux.- Vesicoureteral Reflux.- L. Renal Tumors.- M. Injuries.- N. Miscellaneous Subjects.- I. Testes.- II. Prostate.- III. Adrenals.- IV. Bone.- V. Lungs.- VI. Thrombophlebitis.- References.- Urological Ultrasonography.- A. Introduction.- B. Basic Principles.- I. Physics.- II. A-Mode Display.- III. B-Mode and Gray Scale.- C. Method of Examination.- D. Normal Anatomy.- I. Kidney-Transverse Anatomy.- II. Kidney-Sagittal Anatomy.- III. Bladder.- E. Clinical Applications.- IV. Perirenal Masses.- 1. Cysts.- 2. Percutaneous Cyst Puncture.- 3. Complex or Solid Masses.- II. Renal Biopsy.- III. Perirenal Fluid Collections.- IV. Perirenal Masses.- V. Hydronephrosis.- VI. Renal Transplants.- VII. Urinary Bladder.- 1. Bladder Volumes.- 2. Bladder Tumors.- 3. Prostatic Scanning.- Summary.- References.- Percutaneous Puncture Nephostromy.- A. Introduction.- B. Operative Nephrostomy.- C. Percutaneous Puncture of the Renal Pelvis.- D. The Principle of Percutaneous Puncture Nephrostomy.- I. Instruments.- II. Anesthesia.- III. The Technique of Percutaneous Puncture Nephrostomy.- 1. Puncture and Introduction of a Polyethylene Tube Into the Renal Pelvis.- 2. Dilatation of the Nephrostomy Canal.- 3. Insertion of Foley-Type Catheter.- 4. Inflation of the Balloon.- IV. Duration of Catheter Drainage.- V. Accidental Extrusion of a Tube.- VI. Accidental Extrusion of a Foley Catheter.- VII. Permanent Nephrostomy.- E. General Aspects on the Indications for Puncture Nephrostomy.- I. Unilateral Obstruction With Normal Contralateral Kidney.- II. Ureteric Obstruction in a Solitary Kidney or With Malfunction of the Contralateral Kidney.- III. Bilateral Ureteric Obstruction.- F. Special Indications for Nephrostomy.- I. Operative Damage to a Ureter.- II. The Ureter Blocked by a Calculus.- III. Ureteric Stricture Following Urogenital Tuberculosis.- IV. Retroperitoneal Fibrosis.- V. Ureteric Obstruction in Malignant Disease.- VI. The Contracted Bladder With Necrosis and Fistula Formation.- VII. Postoperative Complications Following Urinary Diversion.- G. Ureteric Obstruction Complicated by Infection.- H. Removal of Renal Calculi by Percutaneous Renal Puncture.- J. Complications of Puncture Nephrostomy.- I. Hemorrhage.- II. Pain.- III. Infection.- IV. Accidental Penetration of Nonrenal Organs.- V. Inadequate Drainage.- VI. Disturbances of Renal Function.- References.- Author Index.