Importance of oxygenation in the appearance of acute subarachnoid hemorrhage on high field magnetic resonance imaging.

R. I. Grossman, S. S. Kemp, C. Y. Ip, Joel Fishman, J. M. Gomori, P. M. Joseph, T. Asakura

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

The ability to detect acute hemorrhage by magnetic resonance (MR) is related to the oxygen saturation of hemoglobin. This experiment measured the relaxation times of solutions of cerebrospinal fluid containing a 5 per cent hematocrit at various pO2's on a 1.4 tesla (T) MR imaging system. The results demonstrate that the state of oxygen saturation of hemoglobin determines the extent of T2 relaxation at this field strength. The T2 relaxation rate varies quadratically with the concentration of deoxyhemoglobin. There were no significant changes in the T1 relaxation rate with variations in pO2. These findings may, in part, explain the inability of MR to detect subarachnoid hemorrhage, and the MR appearance of blood in intratumoral hemorrhage, hemorrhagic cortical infarction and neonatal hemorrhage.

Original languageEnglish
Pages (from-to)56-58
Number of pages3
JournalActa Radiologica, Supplement
Volume369
StatePublished - Dec 1 1986
Externally publishedYes

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Subarachnoid Hemorrhage
Magnetic Resonance Spectroscopy
Magnetic Resonance Imaging
Hemorrhage
Hemoglobins
Oxygen
Hematocrit
Infarction
Cerebrospinal Fluid

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Radiological and Ultrasound Technology

Cite this

Grossman, R. I., Kemp, S. S., Ip, C. Y., Fishman, J., Gomori, J. M., Joseph, P. M., & Asakura, T. (1986). Importance of oxygenation in the appearance of acute subarachnoid hemorrhage on high field magnetic resonance imaging. Acta Radiologica, Supplement, 369, 56-58.

Importance of oxygenation in the appearance of acute subarachnoid hemorrhage on high field magnetic resonance imaging. / Grossman, R. I.; Kemp, S. S.; Ip, C. Y.; Fishman, Joel; Gomori, J. M.; Joseph, P. M.; Asakura, T.

In: Acta Radiologica, Supplement, Vol. 369, 01.12.1986, p. 56-58.

Research output: Contribution to journalArticle

Grossman, R. I. ; Kemp, S. S. ; Ip, C. Y. ; Fishman, Joel ; Gomori, J. M. ; Joseph, P. M. ; Asakura, T. / Importance of oxygenation in the appearance of acute subarachnoid hemorrhage on high field magnetic resonance imaging. In: Acta Radiologica, Supplement. 1986 ; Vol. 369. pp. 56-58.
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