Preliminary Study of Oxygen-Enhanced Longitudinal Relaxation in MRI: A Potential Novel Biomarker of Oxygenation Changes in Solid TumorsCitation formats
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Preliminary Study of Oxygen-Enhanced Longitudinal Relaxation in MRI: A Potential Novel Biomarker of Oxygenation Changes in Solid Tumors. / O'Connor, James P B; Naish, Josephine H.; Parker, Geoff J M; Waterton, John C.; Watson, Yvonne; Jayson, Gordon C.; Buonaccorsi, Giovanni A.; Cheung, Sue; Buckley, David L.; McGrath, Deirdre M.; West, Catharine M L; Davidson, Susan E.; Roberts, Caleb; Mills, Samantha J.; Mitchell, Claire L.; Hope, Lynn; Ton, N. Chan; Jackson, Alan.
In: International Journal of Radiation: Oncology - Biology - Physics, Vol. 75, No. 4, 6, 15.11.2009, p. 1209-1215.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Preliminary Study of Oxygen-Enhanced Longitudinal Relaxation in MRI: A Potential Novel Biomarker of Oxygenation Changes in Solid Tumors
AU - O'Connor, James P B
AU - Naish, Josephine H.
AU - Parker, Geoff J M
AU - Waterton, John C.
AU - Watson, Yvonne
AU - Jayson, Gordon C.
AU - Buonaccorsi, Giovanni A.
AU - Cheung, Sue
AU - Buckley, David L.
AU - McGrath, Deirdre M.
AU - West, Catharine M L
AU - Davidson, Susan E.
AU - Roberts, Caleb
AU - Mills, Samantha J.
AU - Mitchell, Claire L.
AU - Hope, Lynn
AU - Ton, N. Chan
AU - Jackson, Alan
N1 - O'Connor J.P.B. Naish J.H. Parker G.J.M. Waterton J.C. Watson Y. Jayson G.C. Buonaccorsi G.A. Cheung S. Buckley D.L. McGrath D.M. West C.M.L. Davidson S.E. Roberts C. Mills S.J. Mitchell C.L. Hope L. Ton N.C. Jackson A. International Journal of Radiation Oncology Biology Physics. 75 (4) (pp 1209-1215), 2009. Date of Publication Journal: Article
PY - 2009/11/15
Y1 - 2009/11/15
N2 - Purpose: There is considerable interest in developing non-invasive methods of mapping tumor hypoxia. Changes in tissue oxygen concentration produce proportional changes in the magnetic resonance imaging (MRI) longitudinal relaxation rate (R1). This technique has been used previously to evaluate oxygen delivery to healthy tissues and is distinct from blood oxygenation level-dependent (BOLD) imaging. Here we report application of this method to detect alteration in tumor oxygenation status. Methods and materials: Ten patients with advanced cancer of the abdomen and pelvis underwent serial measurement of tumor R1 while breathing medical air (21% oxygen) followed by 100% oxygen (oxygen-enhanced MRI). Gadolinium-based dynamic contrast-enhanced MRI was then performed to compare the spatial distribution of perfusion with that of oxygen-induced ΔR1. Results: ΔR1 showed significant increases of 0.021 to 0.058 s-1 in eight patients with either locally recurrent tumor from cervical and hepatocellular carcinomas or metastases from ovarian and colorectal carcinomas. In general, there was congruency between perfusion and oxygen concentration. However, regional mismatch was observed in some tumor cores. Here, moderate gadolinium uptake (consistent with moderate perfusion) was associated with low area under the ΔR1 curve (consistent with minimal increase in oxygen concentration). Conclusions: These results provide evidence that oxygen-enhanced longitudinal relaxation can monitor changes in tumor oxygen concentration. The technique shows promise in identifying hypoxic regions within tumors and may enable spatial mapping of change in tumor oxygen concentration. © 2009 Elsevier Inc. All rights reserved.
AB - Purpose: There is considerable interest in developing non-invasive methods of mapping tumor hypoxia. Changes in tissue oxygen concentration produce proportional changes in the magnetic resonance imaging (MRI) longitudinal relaxation rate (R1). This technique has been used previously to evaluate oxygen delivery to healthy tissues and is distinct from blood oxygenation level-dependent (BOLD) imaging. Here we report application of this method to detect alteration in tumor oxygenation status. Methods and materials: Ten patients with advanced cancer of the abdomen and pelvis underwent serial measurement of tumor R1 while breathing medical air (21% oxygen) followed by 100% oxygen (oxygen-enhanced MRI). Gadolinium-based dynamic contrast-enhanced MRI was then performed to compare the spatial distribution of perfusion with that of oxygen-induced ΔR1. Results: ΔR1 showed significant increases of 0.021 to 0.058 s-1 in eight patients with either locally recurrent tumor from cervical and hepatocellular carcinomas or metastases from ovarian and colorectal carcinomas. In general, there was congruency between perfusion and oxygen concentration. However, regional mismatch was observed in some tumor cores. Here, moderate gadolinium uptake (consistent with moderate perfusion) was associated with low area under the ΔR1 curve (consistent with minimal increase in oxygen concentration). Conclusions: These results provide evidence that oxygen-enhanced longitudinal relaxation can monitor changes in tumor oxygen concentration. The technique shows promise in identifying hypoxic regions within tumors and may enable spatial mapping of change in tumor oxygen concentration. © 2009 Elsevier Inc. All rights reserved.
KW - Biomarker
KW - Longitudinal relaxation rate (R1)
KW - MRI
KW - Neoplasm
KW - Oxygen
U2 - 10.1016/j.ijrobp.2008.12.040
DO - 10.1016/j.ijrobp.2008.12.040
M3 - Article
C2 - 19327904
VL - 75
SP - 1209
EP - 1215
JO - International Journal of Radiation: Oncology - Biology - Physics
JF - International Journal of Radiation: Oncology - Biology - Physics
SN - 0360-3016
IS - 4
M1 - 6
ER -