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Effect of breath holding on blood flow measurement using fast velocity encoded cine MRI
Author(s) -
Sakuma Hajime,
Kawada Nanaka,
Kubo Hitoshi,
Nishide Yoshiya,
Takano Katsuhiro,
Kato Noriyuki,
Takeda Kan
Publication year - 2001
Publication title -
magnetic resonance in medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.696
H-Index - 225
eISSN - 1522-2594
pISSN - 0740-3194
DOI - 10.1002/1522-2594(200102)45:2<346::aid-mrm1044>3.0.co;2-i
Subject(s) - blood flow , lung volumes , medicine , lung , breathing , respiratory system , cardiac output , ventilation (architecture) , aorta , pulmonary artery , cardiology , nuclear medicine , hemodynamics , anesthesia , physics , thermodynamics
Breath‐hold MR measurement of cardiac output was compared with results from respiratory triggered MR acquisitions, since flow measurement during breath‐holding may be different from physiological blood flow. Cardiac output during large lung volume breath‐holding (4.47 ± 0.63 l/min in the aorta and 4.53 ± 0.59 l/min in the pulmonary artery) was significantly lower than that measured during normal breathing (6.09 ± 0.49 l/min and 6.48 ± 0.67 l/min, P < 0.01). In contrast, no significant difference was found between measurements conducted with small lung volume breath‐holding (5.87 ± 0.53 l/min and 6.41 ± 0.75 l/min) and normal breathing. In conclusion, breath‐hold MR flow measurement using small lung volume by shallow inspiration can provide a blood flow quantification that is close to physiological blood flow. Magn Reson Med 45:346–348, 2001. © 2001 Wiley‐Liss, Inc.