Nuclear medicine communications
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Comparative Study
Diagnosis of pulmonary embolism: planar images generated from V/Q SPECT are not a reliable substitute for traditional planar V/Q scan.
The use of summed planar images generated from single-photon emission computed tomography (SPECT) ventilation/perfusion (V/Q) scintigraphy has been proposed as a substitute for planar V/Q scans in order to use the revised PIOPED interpretation criteria when only SPECT acquisition is performed in patients with suspected pulmonary embolism. The aim was to evaluate the accuracy of angular summed planar scans in comparison with true planar images. ⋯ Planar images generated from SPECT V/Q scintigraphy are not a reliable substitute for true planar V/Q images.
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To investigate whether in lower extremity lymphoedema, lymph proteins enter blood before they do the thoracic duct. ⋯ In lymphoedema, more lymph proteins enter blood proximal to the thoracic duct. The time courses of nodal and hepatic activities suggest that access may occur within nodes themselves.
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Although initial studies have shown the utility of fluorine-18 fluorodeoxyglucose (F-18 FDG) PET in the detection and restaging of recurrent breast carcinoma, scarce literature exists on F-18 FDG PET/computed tomography (CT). This retrospective study was carried out to evaluate the role of F-18-FDG PET/CT in recurrent breast carcinoma and its impact on management. ⋯ F-18 FDG PET/CT is a very sensitive and specific imaging tool in detecting and restaging recurrent breast carcinoma. It can be a very useful imaging tool for restaging locoregional recurrences, and as a one-stop shop imaging technique to confirm suspicious metastatic disease on conventional imaging and to define the total burden of disease.
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The aim of this study was to evaluate the usefulness of the tumor burden as characterized by the metabolic tumor volume (MTV) and total lesion glycolysis (TLG) measured by F-18 fluoro-2-deoxyglucose (F-18 FDG) PET-computed tomography (CT) in predicting recurrence-free survival (RFS) and overall survival (OS) in surgically resected non-small-cell lung cancer (NSCLC) patients. ⋯ Volume-based parameters of F-18 FDG PET-CT may have a role in providing prognostic information in NSCLC patients who have received surgical treatment.
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The correct and prompt diagnosis of chronic thromboembolic pulmonary hypertension (CTEPH) plays a pivotal role in determining appropriate therapy. This study aimed to compare the diagnostic efficacy of pulmonary ventilation/perfusion (V/Q) scanning and computed tomography pulmonary angiography (CTPA) using pulmonary angiography as the golden standard. ⋯ In conclusion, both V/Q scanning and CTPA are accurate methods for the detection of CTEPH with excellent diagnostic efficacy.