Vascular Anatomy at the Medial Ends of Incomplete Major FissuresMori, Koichi MDJournal of Thoracic Imaging: July 2003 - Volume 18 - Issue 3 - pp 190-194 Digital Chest Radiography: ESSENTIALS OF THORACIC IMAGING Abstract Author Information Purpose of this study was to examine the relationship of the pulmonary vasculature with the medial ends of incomplete major fissures. Methods: All of the 2-mm thickness conventional CT and 2-mm collimated helical CT scans of the chest of the past 3 ½ years were reviewed. The right lungs of 132 patients and left lungs of 133 patients were examined to evaluate the pulmonary vasculature at the medial ends of the major fissures. Results and Conclusion: After excluding patients with complete major fissures, in 45 of 86 right lungs (52.3%) and 30 of 75 left lungs (40.0%), the pulmonary vasculature ran at the medial ends of the incomplete major fissures. In all patients, in 25.5% of conventional CT slices and 18.2% of helical CT slices of the right lungs, and in 15.1% of conventional CT slices and 11.0% of helical CT slices of the left lungs, the pulmonary vasculature was seen at the medial ends of the incomplete major fissures. From the Department of Radiology at Mitsui Memorial Hospital, Japan. Address correspondence and reprint requests to Koichi Mori, Department of Radiology, Tsuchiura Kyodo General Hospital, 11-7, Manabe-Shinmachi, Tsuchiura-city, Ibaraki 300-0053, Japan. E-mail: email@example.com © 2003 Lippincott Williams & Wilkins, Inc.