Nuclear medicine communications
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Comparative Study
18F-FLT PET/CT imaging is not competent for the pretreatment evaluation of metastatic gastric cancer: a comparison with 18F-FDG PET/CT imaging.
The aim of this study was to evaluate the utility of 3'-deoxy-3'-F-fluorothymidine (F-FLT) PET/computed tomography (CT) imaging in the pretreatment evaluation of metastatic gastric cancer in comparison with F-fluorodeoxyglucose (F-FDG) PET/CT imaging. ⋯ F-FLT PET/CT imaging is not recommended for pretreatment assessment of metastatic gastric cancer as it is not competent enough to evaluate liver and bone metastases; moreover, the high background hepatic uptake may cover the gastric primary tumors located adjacent to the liver.
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The aim of the study was to accurately examine the functional volume (RI-vol) of the hepatic segments on single photon emission computed tomography/computed tomography (CT) fusion imaging by technetium-99m galactosyl human serum albumin scintigraphy and compare it with the RI-vol and morphological volume obtained on computed tomography (CT-vol). ⋯ Volumetric measurement using single photon emission computed tomography/CT imaging with technetium-99m galactosyl human serum albumin scintigraphy is useful for evaluating the functional volume in separated livers and offers a good reflection of the background liver status.
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This retrospective study was conducted to assess the incremental value, if any, of including the brain in whole-body fluorine-18 fluorodeoxyglucose (F-FDG) positron emission tomography/computed tomography (PET/CT) studies in patients with extracalvarial primary malignancies. ⋯ Inclusion of the brain routinely in whole-body F-FDG PET/CT studies detected previously unknown metastases in only 0.7% (40/5110) of studies, with negligible impact (0.15%) on staging.
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This study was conducted to evaluate the role of (18)F-fluorodeoxyglucose ((18)F-FDG) PET/computed tomography (CT) in identifying missed distant metastases in patients with locally advanced breast cancer (LABC) who were assessed by conventional imaging methods. ⋯ (18)F-FDG PET/CT is a sensitive and specific imaging modality for identifying distant metastases in patients with LABC missed by conventional imaging. In addition, it detects unknown lymph nodal metastases in a significant proportion of patients and hence can be used routinely in staging of patients with LABC.
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Comparative Study
Added value of SPECT/spiral CT versus SPECT in diagnosing solitary spinal lesions in patients with extraskeletal malignancies.
The aim of this study was to investigate the added value of single-photon emission computed tomography (SPECT)/spiral computed tomography (CT) versus SPECT alone in the differential diagnosis of solitary spinal lesions in patients with extraskeletal malignancies. ⋯ Compared with SPECT imaging alone, SPECT/spiral CT imaging was more accurate and valuable in the differential diagnosis of solitary spinal lesions in patients with extraskeletal malignancies.