Seven cases of esophageal intramural pseudodiverticulosis (EIPD) are presented and compared with 46 cases previously reported. EIPD is mainly a disease of older age with a 3:2 predominance of male patients. The radiologic appearance of EIPD shows great variation in localization and severity of visible changes. Radiologic examination is far more sensitive than endoscopy in diagnosing EIPD. The most effective therapy for EIPD is dilatation of strictures, leading to amelioration or disappearance of symptoms in over 90% of cases. Visible pseudodiverticula may persist after therapy, even in symptom-free patients.

The angiographic and CT findings in seven cases of cerebral venous angioma are presented and analyzed. Two cases were also examined with dynamic CT. The radiological literature on the subject is reviewed and a new classification of cerebral venous angioma based on its pattern of drainage is proposed. It is concluded that with the use of thin slices and coronal cuts both the angioma and its pattern of venous drainage can be identified on CT in a high proportion of cases. In addition, with dynamic CT the specificity of CT in diagnosing cerebral venous angioma may further increase.

The flow of blood in vitro and in the carotid artery of the dog was calculated by a new cinedensitometric technique and compared with the flow as measured simultaneously by graduated cylinder and stopwatch. Cineangiographic films were projected onto a frosted screen and the light intensity was measured at two neighboring cross sections of the vessel in question. The passage of the contrast medium yielded a pair of indicatordilution curves of which the difference in mean transit time was calculated. The distance between the cross sections and the diameter of the vessel was measured with the aid of x-ray-dense scales. The flow through the vessel was calculated as the product of crosssectional area and mean velocity.The correlation coefficient between the volumetric flow and the flow as found by cinedensitometry was 0.976 in vitro and 0.946 in the intact dog with no systematic deviation from the line of identity. The method enables the blood flow in the intact circulation to be calculated in milliliters per second in any vessel that can be clearly visualized by cineangiocardiography. Additional Indexing Words: Indicator-dilution method Mean circulation time Blood velocity Blood flow pattern Carotid flow Contrast medium for blood flow determination ANGIOCARDIOGRAPHY has been stud-951 From the