Distribution of Proliferating Bone Marrow in Adult Cancer Patients Determined Using FLT-PET Imaging

Journal Article · Tue Mar 01 00:00:00 EST 2011 · International Journal of Radiation Oncology, Biology and Physics

DOI:https://doi.org/10.1016/j.ijrobp.2009.11.040· OSTI ID:21491637

Callahan, Jason W; Herschtal, Alan ^[1]; Everitt, Sarah ^[1]; Binns, David S ^[1]; Hicks, Rod J; Mac Manus, Michael ^[1]

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1. Peter MacCallum Cancer Centre, Melbourne, VIC (Australia)

Purpose: Given that proliferating hematopoietic stem cells are especially radiosensitive, the bone marrow is a potential organ at risk, particularly with the use of concurrent chemotherapy and radiotherapy. Existing data on bone marrow distribution have been determined from the weight and visual appearance of the marrow in cadavers. {sup 18}F-fluoro-L-deoxythymidine concentrates in bone marrow, and we used its intensity on positron emission tomography imaging to quantify the location of the proliferating bone marrow. Methods and Materials: The {sup 18}F-fluoro-L-deoxythymidine positron emission/computed tomography scans performed at the Peter MacCallum Cancer Centre between 2006 and 2009 on adult cancer patients were analyzed. At a minimum, the scans included the mid-skull through the proximal femurs. A software program developed at our institution was used to calculate the percentage of administered activity in 11 separately defined bony regions. Results: The study population consisted of 13 patients, 6 of whom were men. Their median age was 61 years. Of the 13 patients, 9 had lung cancer, 2 had colon cancer, and 1 each had melanoma and leiomyosarcoma; 6 had received previous, but not recent, chemotherapy. The mean percentage of proliferating bone marrow by anatomic site was 2.9% {+-} 2.1% at the skull, 1.9% {+-} 1.2% at the proximal humeri, 2.9% {+-} 1.3% at the sternum, 8.8% {+-} 4.7% at the ribs and clavicles, 3.8% {+-} 0.9% at the scapulas, 4.3% {+-} 1.6% at the cervical spine, 19.9% {+-} 2.6% at the thoracic spine, 16.6% {+-} 2.2% at the lumbar spine, 9.2% {+-} 2.3% at the sacrum, 25.3% {+-} 4.9% at the pelvis, and 4.5% {+-} 2.5% at the proximal femurs. Conclusion: Our modern estimates of bone marrow distribution in actual cancer patients using molecular imaging of the proliferating marrow provide updated data for optimizing normal tissue sparing during external beam radiotherapy planning.

• OSTI ID: 21491637
• Journal Information: International Journal of Radiation Oncology, Biology and Physics, Vol. 79, Issue 3; Other Information: DOI: 10.1016/j.ijrobp.2009.11.040; PII: S0360-3016(09)03611-6; Copyright (c) 2011 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; ISSN 0360-3016
• Country of Publication: United States
• Language: English

Related Subjects

62 RADIOLOGY AND NUCLEAR MEDICINE
BONE MARROW
CHEMOTHERAPY
DISTRIBUTION
FLUORINE 18
FLUORODEOXYGLUCOSE
POSITRON COMPUTED TOMOGRAPHY
PROLIFERATION
RADIOTHERAPY
STEM CELLS
TOXICITY
ANIMAL CELLS
ANIMAL TISSUES
ANTIMETABOLITES
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
BODY
COMPUTERIZED TOMOGRAPHY
DIAGNOSTIC TECHNIQUES
DRUGS
EMISSION COMPUTED TOMOGRAPHY
FLUORINE ISOTOPES
HEMATOPOIETIC SYSTEM
HOURS LIVING RADIOISOTOPES
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
LIGHT NUCLEI
MEDICINE
NANOSECONDS LIVING RADIOISOTOPES
NUCLEAR MEDICINE
NUCLEI
ODD-ODD NUCLEI
ORGANS
RADIOISOTOPES
RADIOLOGY
SOMATIC CELLS
THERAPY
TOMOGRAPHY