AJP - Heart Watch the video to see how APS reaches out to developing nations.
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

Am J Physiol Heart Circ Physiol 276: H2262-H2267, 1999;
0363-6135/99 $5.00
This Article
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Right arrow Citation Map
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Tanaka, A.
Right arrow Articles by Nakazawa, H.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Tanaka, A.
Right arrow Articles by Nakazawa, H.
Vol. 276, Issue 6, H2262-H2267, June 1999

RAPID COMMUNICATION
Branching patterns of intramural coronary vessels determined by microangiography using synchrotron radiation

Akira Tanaka1, Hidezo Mori1, Etsuro Tanaka1, Minhaz Uddin Mohammed1, Yutaka Tanaka1, Takafumi Sekka1, Kunihisa Ito1, Yoshiro Shinozaki1, Kazuyuki Hyodo2, Masami Ando2, Keiji Umetani3, Kenkichi Tanioka4, Misao Kubota4, Sumihisa Abe1, Shunnosuke Handa1, and Hiroe Nakazawa1

1 Departments of Physiology, General Surgery, Plastic Surgery, and Cardiology, Tokai University School of Medicine, Isehara 259-1193; 2 National Laboratory for High Energy Physics, Tsukuba 305-0801; 3 Japan Synchrotron Radiation Research Institute, Spring-8, Hyogo 679-5198; and 4 Science and Technical Research Laboratories, Japan Broadcasting Corporation, Tokyo 157-0073, Japan

The intramural coronary artery (IMCA) with a diameter of 50-500 µm is critical for blood supply to the inner layers of heart muscle. We introduced digital measurement to microangiography using monochromatic synchrotron radiation and quantified branching patterns of the IMCA, the epicardial coronary artery (EPCA), and the distal ileal artery (DIA). The pre- and postbranching diameters were measured (95-1,275 µm) in seven dogs. A typical arterial segment divided into two nearly equivalent branches, and a regression line of daughter-to-mother diameter plots was almost identical among the EPCA (y = 0.838x - 16.7 in µm), IMCA (y = 0.737x - 2.18), and DIA (y = 0.755x + 8.63). However, a considerable difference was present at a segment where a proximal IMCA branched off from an EPCA (y = 0.182x + 90.2). Moreover, a proximal IMCA diameter had no relationship to the branching order from an EPCA. The precision of this method was confirmed by the good correlation of diameter measurements between two independent observers (r = 0.999, y = 1.02x - 1.07). In conclusion, using digital microangiography we demonstrated that the self-similar branching pattern of coronary arteries was discrete at the connection between the IMCA and EPCA.

coronary circulation; ischemia; vessel branching; self-similarity; regional blood flow


This article has been cited by other articles:


Home page
 J. Appl. Physiol.Home page
D. O. Schwenke, J. T. Pearson, K. Kangawa, K. Umetani, and M. Shirai
Changes in macrovessel pulmonary blood flow distribution following chronic hypoxia: assessed using synchrotron radiation microangiography
J Appl Physiol, January 1, 2008; 104(1): 88 - 96.
[Abstract] [Full Text] [PDF]

Home page
 J. Appl. Physiol.Home page
D. O. Schwenke, J. T. Pearson, K. Umetani, K. Kangawa, and M. Shirai
Imaging of the pulmonary circulation in the closed-chest rat using synchrotron radiation microangiography
J Appl Physiol, February 1, 2007; 102(2): 787 - 793.
[Abstract] [Full Text] [PDF]

Home page
 Am. J. Physiol. Heart Circ. Physiol.Home page
G. S. Kassab
Functional hierarchy of coronary circulation: direct evidence of a structure-function relation
Am J Physiol Heart Circ Physiol, December 1, 2005; 289(6): H2559 - H2565.
[Abstract] [Full Text] [PDF]

Home page
 Circ. Res.Home page
W. R. Bauer, K.-H. Hiller, P. Galuppo, S. Neubauer, J. Kopke, A. Haase, C. Waller, and G. Ertl
Fast High-Resolution Magnetic Resonance Imaging Demonstrates Fractality of Myocardial Perfusion in Microscopic Dimensions
Circ. Res., February 16, 2001; 88(3): 340 - 346.
[Abstract] [Full Text] [PDF]

Home page
 Am. J. Physiol. Heart Circ. Physiol.Home page
Y. Nakajima, N. Akizuki, Y. Kimura, H. Kohguchi, A. Tanaka, M. Chujo, N. Hattan, Y. Shinozaki, A. Iida, S. Handa, et al.
Intramyocardial vascular volume distribution studied by synchrotron radiation-excited X-ray fluorescence
Am J Physiol Heart Circ Physiol, December 1, 1999; 277(6): H2353 - H2362.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Visit Other APS Journals Online