THE left-to-right shunts found in small atrial or ventricular septal defects or in patent ductus arteriosus are easily demonstrated during cardiac catheterization by both rightand left-sided approaches.' Efforts to evaluate shunting due to these defects without cardiac catheterization have depended on measurements of the cardiac output curves obtained by various external counting technics.Y Bec...

SHIRAI, M., NAKAMURA, M. and MATSUDA, S. Differential Diagnosis between Functional and Organic Impotence by Radioisotope Penogram Following Visual Sexual Stimulation. Tohoku J. exp. Med., 1973, 111 (2), 187-195 The radioisotope penogram, which measures changes of blood flow through the penis, was developed and applied as a measure of objective differentiation between functional and organic impo...

Radionuclide therapy has been an integral part of systemic treatment of patients with advanced and disseminated cancer for 50 years. Specific radioisotopes (b- or a-emitters) with selective concentration at sites of bone cancer damage are used in the treatment. Radioisotopes are an important addition to the armamentarium of clinicians who take care of patients with advanced cancer and painful c...

For scintigraphic instruments such as scanners and scintillation cameras, collimatore with greatly dif ferent characteristics have become available during recent years. In general little information is given concerning the performance of focused collimatore to the physician or physicist who has to select the proper collimator for a particular application.! Only the number of holes, the focal le...

OBJECTIVE Delayed gastric emptying after esophageal operations occurs in up to 50% of patients. A good quality of life, in long-term survivors after esophagectomy, may depend on both dietary adaptation and the improvement of intrathoracic gastric motility itself. The objective of this study was to investigate the effect of pyloric balloon dilatation on the sustained delay of gastric emptying af...