Nuclear medicine communications
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Comparative Study
The role of 18F-FDG PET/CT in detecting colorectal cancer recurrence in patients with elevated CEA levels.
In this study we aimed to define the success of fluorine-18 (18F) fluorodeoxyglucose (FDG) PET/computed tomography (PET/CT) in detecting recurrent disease in our patient group with colorectal cancer (CRC) and elevated carcinoembryonic antigen (CEA) levels. ⋯ 18F-FDG PET/CT is a safe imaging method that can be used in the determination of CRC recurrence in patients with elevated CEA levels, regardless of the CEA level.
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To predict the postoperative pulmonary function using ventilation-perfusion scintigraphy and explore its feasibility in evaluating surgical risk for lung cancer patients with borderline pulmonary functions [forced expiratory volume in 1 s (FEV₁)<2.0 l for pneumonectomy or <1.5 l for lobectomy]. ⋯ Ventilation-perfusion scans can predict postoperative pulmonary function and help evaluate the risk of surgery for lung cancer patients with borderline pulmonary functions.
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The increase in tumor markers with negative or equivocal conventional imaging modalities represents a serious dilemma in the follow-up of previously treated cancer patients. Positron emission tomography/computed tomography (PET/CT) has emerged as a useful tool in oncological imaging in staging and restaging of most cancers. ⋯ ¹⁸F-FDG PET/CT is a powerful diagnostic tool in restaging of cancer patients. In most cases, PET/CT provides accurate results and helps resolve the clinical dilemma encountered in oncological patients with increasing serum tumor markers and negative or equivocal findings in conventional imaging modalities.
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Comparative Study
Bone scintigraphy in breast cancer: added value of hybrid SPECT-CT and its impact on patient management.
To evaluate the incremental value of single-photon emission computed tomography-computed tomography (SPECT-CT) over planar scintigraphy and SPECT alone for equivocal bone scintigraphy lesions in patients with breast cancer and to assess its impact on patient management. ⋯ SPECT-CT is better than planar scintigraphy and SPECT alone for characterizing equivocal bone scintigraphy lesions in patients with breast cancer and can have a significant impact on patient management.
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Comparative Study
Role of FDG PET-CT in detecting recurrence in patients with uterine sarcoma: comparison with conventional imaging.
The purpose of the present study was to evaluate the role of 18F-fluorodeoxyglucose (FDG) PET-CT in detecting recurrent disease in posttherapy patients of uterine sarcoma and compare the same with conventional imaging (CI). ⋯ FDG PET-CT is a highly sensitive and specific modality for detecting recurrence in posttherapy patients with uterine sarcoma. However, it provides no significant advantage over CI for this purpose.