HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Figures Only Full Text MPEG movies All Versions of this Article: e8v1 23/1/e8    most recent Submit a response Alert me when this article is cited Alert me when eLetters are posted Alert me if a correction is posted Citation Map Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Saito, K. Articles by Ohtomo, K. Search for Related Content PubMed PubMed Citation Articles by Saito, K. Articles by Ohtomo, K. Related Collections Cardiac Radiology Computed Tomography

Real-Time Four-dimensional Imaging of the Heart with Multi–Detector Row CT¹

¹ From the Department of Radiology, Graduate School of Medicine, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan. Presented as a scientific exhibit at the 2001 RSNA scientific assembly. Received March 31, 2002, revision requested May 23, revision received and accepted August 30. Address correspondence to K.S. (e-mail: kimiakis{at}horae.dti.ne.jp).

An interactive four-dimensional (4D) visualizing system for the heart was developed by the authors. The system realizes high-resolution three-dimensional (3D) imaging with temporal resolution in a beating heart by using eight or more data sets reconstructed from multi–detector row computed tomography (MDCT) with a retrospective electrocardiograph-gated reconstruction algorithm. The motion of heart walls, papillary muscles, septa, and valves can now be observed in 4D multiplanar reformations (MPRs), as with sonography, while coronary arteries, coronary sinuses, and cardiac veins can be analyzed during the optimal phase in 4D volume-rendering images, as with angiography. All parameters such as window width, window level, field of view, panning, tilt, thresholds, opacity, color, and segmentation function are completely interactive in 4D imaging. Two longitudinal views and one latitudinal view of a heart can be simultaneously visualized in the three relative 4D MPR views. These newly developed capabilities in viewing both 3D volume and temporal resolution data, functional data, and even multiphase data with registration add considerable diagnostic potential. The advent of this real-time 4D visualizing system has enhanced the capabilities of MDCT.

© RSNA, 2003

Index Terms: Heart, CT, 51.12113, 51.12115, 51.12116, 51.12117, 51.12118, 54.12113, 54.12115, 54.12116, 54.12117, 54.12118

This article has been cited by other articles:

				K. Sakakura, T. Yasu, Y. Kobayashi, T. Katayama, Y. Sugawara, H. Funayama, Y. Takagi, N. Ikeda, T. Ishida, Y. Tsuruya, et al. Noninvasive Tissue Characterization of Coronary Arterial Plaque by 16-Slice Computed Tomography in Acute Coronary Syndrome Angiology, March 1, 2006; 57(2): 155 - 160. [Abstract] [PDF]

				J. F. Bruzzi, M. Remy-Jardin, D. Delhaye, A. Teisseire, C. Khalil, and J. Remy When, Why, and How to Examine the Heart During Thoracic CT: Part 1, Basic Principles Am. J. Roentgenol., February 1, 2006; 186(2): 324 - 332. [Abstract] [Full Text] [PDF]

				A. Rosset, L. Spadola, L. Pysher, and O. Ratib Informatics in Radiology (infoRAD): Navigating the Fifth Dimension: Innovative Interface for Multidimensional Multimodality Image Navigation RadioGraphics, January 1, 2006; 26(1): 299 - 308. [Abstract] [Full Text] [PDF]