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The feasibility of [18F]EF5-PET/CT to image hypoxia in ovarian tumors: a clinical study.


ABSTRACT: RATIONALE:Evaluation of the feasibility of [18F]EF5-PET/CT scan in identifying hypoxic lesions in ovarian tumors in prospective clinical setting. METHODS:Fifteen patients with a suspected malignant ovarian tumor were scanned with [18F]EF5 and [18F]FDG-PET/CT preoperatively. The distribution of [18F]EF5-uptake, total intraabdominal metabolic tumor volume (TMTV), and hypoxic subvolume (HSV) were assessed. RESULTS:[18F]EF5-PET/CT suggested hypoxia in 47% (7/15) patients. The median HSV was 87?cm3 (31% of TMTV). The [18F]EF5-uptake was detected in primary tumors and in four patients also in intra-abdominal metastases. The [18F]EF5-uptake in cancer tissue was low compared to physiological excretory pathways, complicating the interpretation of PET/CT images. CONCLUSIONS:[18F]EF5-PET/CT is not feasible in ovarian cancer imaging in clinical setting due to physiological intra-abdominal [18F]EF5-accumulation. However, it may be useful when used complementarily to FDG-PET/CT.

SUBMITTER: Laasik M 

PROVIDER: S-EPMC7483702 | biostudies-literature | 2020 Sep

REPOSITORIES: biostudies-literature

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The feasibility of [<sup>18</sup>F]EF5-PET/CT to image hypoxia in ovarian tumors: a clinical study.

Laasik Maren M   Hynninen Johanna J   Forsback Sarita S   Noponen Tommi T   Seppänen Marko M   Hietanen Sakari S  

EJNMMI research 20200910 1


<h4>Rationale</h4>Evaluation of the feasibility of [<sup>18</sup>F]EF5-PET/CT scan in identifying hypoxic lesions in ovarian tumors in prospective clinical setting.<h4>Methods</h4>Fifteen patients with a suspected malignant ovarian tumor were scanned with [<sup>18</sup>F]EF5 and [<sup>18</sup>F]FDG-PET/CT preoperatively. The distribution of [<sup>18</sup>F]EF5-uptake, total intraabdominal metabolic tumor volume (TMTV), and hypoxic subvolume (HSV) were assessed.<h4>Results</h4>[<sup>18</sup>F]EF5  ...[more]

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