Preconceptual leptin levels in gestational diabetes and hypertensive pregnancy.

Unlabelled: Pregnancy - induced hypertension (PIH), preeclampsia (PE), and gestational diabetes (GDM) are common adverse outcomes in pregnancy.

Objective: To find out whether preconceptual leptin levels differ in subsequent pregnancy between control vs. GDM and hypertensive pregnancy groups.

C-11 acetate has excellent reproducibility for quantification of myocardial oxidative metabolism.

Aims: C-11 acetate PET imaging allows quantification of myocardial oxidative metabolism. We sought to assess the reproducibility of such analysis with the Carimas software.

Methods And Results: The myocardial oxygen consumption rate was assessed via a kmono index--the clearance rate constant of a mono-exponential function fitted to a C-11 acetate clearance curve.

Measurement of brown adipose tissue mass using a novel dual-echo magnetic resonance imaging approach: a validation study.

Objective: The aim of this study was to evaluate and validate magnetic resonance imaging (MRI) for the visualization and quantification of brown adipose tissue (BAT) in vivo in a rat model. We hypothesized that, based on differences in tissue water and lipid content, MRI could reliably differentiate between BAT and white adipose tissue (WAT) and could therefore be a possible alternative for (18)F-Fluorodeoxyglucose Positron Emission Tomography ((18)FDG-PET), the current gold standard for non-invasive BAT quantification.

Materials/methods: Eleven rats were studied using both (18)FDG-PET/CT and MRI (1.

Planar scintigraphy with 123I/99mTc-sestamibi, 99mTc-sestamibi SPECT/CT, 11C-methionine PET/CT, or selective venous sampling before reoperation of primary hyperparathyroidism?

Unlabelled: All patients with primary hyperparathyroidism should undergo localization studies before reoperation, but it is not known which method is most accurate. The purpose of this prospective study was to compare the performance of planar scintigraphy with (123)I/(99m)Tc-sestamibi, (99m)Tc-sestamibi SPECT (SPECT/CT), (11)C-methionine PET/CT, and selective venous sampling (SVS) in persistent primary hyperparathyroidism.

Methods: Twenty-one patients referred for reoperation of persistent hyperparathyroidism were included and investigated with (123)I/(99m)Tc-sestamibi, SPECT/CT (n = 19), (11)C-methionine PET/CT, and SVS (n = 18) before reoperation.

Comparison of five parathyroid scintigraphic protocols.

Objectives. We compared five parathyroid scintigraphy protocols in patients with primary (pHPT) and secondary hyperparathyroidism (sHPT) and studied the interobserver agreement. The dual-tracer method ((99m)Tc-sestamibi/(123)I) was used with three acquisition techniques (parallel-hole planar, pinhole planar, and SPECT/CT).

FDG PET/CT in staging of advanced epithelial ovarian cancer: frequency of supradiaphragmatic lymph node metastasis challenges the traditional pattern of disease spread.

Objective: Epithelial ovarian cancer (EOC) spreads intra-abdominally and to the retroperitoneal lymph nodes. A greater number of distant metastases are revealed by (18)F-fluorodeoxyglucose (FDG) positron emission tomography/computed tomography (PET/CT) compared to conventional imaging methods. We aimed to investigate the presence and anatomic distribution of supradiaphragmatic lymph node metastasis (LNM) detected with pretreatment FDG PET/CT.

Diet intervention reduces uptake of αvβ3 integrin-targeted PET tracer 18F-galacto-RGD in mouse atherosclerotic plaques.

Background: Expression of α(v)β(3) integrin has been proposed as a marker for atherosclerotic lesion inflammation. We studied whether diet intervention reduces uptake of α(v)β(3) integrin-targeted positron emission tomography tracer (18)F-galacto-RGD in mouse atherosclerotic plaques.

Methods And Results: Hypercholesterolemic LDLR(-/-) ApoB(100/100) mice on high-fat diet for 4 months were randomized to further 3 months on high-fat diet (high-fat group, n = 8) or regular mouse chow (intervention group, n = 7).

Complementary roles of 18F-DOPA PET/CT and 18F-FDG PET/CT in medullary thyroid cancer.

Unlabelled: Serum calcitonin and carcinoembryonic antigen (CEA) are markers of recurrent or persistent disease in medullary thyroid cancer (MTC). However, conventional imaging often fails to localize metastatic disease. Our aim was to compare fluorine-labeled dihydroxyphenylalanine ((18)F-DOPA) and (18)F-FDG PET/CT with multidetector CT (MDCT) and MRI in recurrent or persistent MTC.

Visual assessment of [(11)C]PIB PET in patients with cognitive impairment.

Purpose: The aim of this study was to evaluate the visual assessment of positron emission tomography images of N-[methyl-11C]2-(4'-methylaminophenyl)-6-hydroxybenzothiazole ([11C]PIB) in a patient population with mild to moderate memory impairment or dementia.

Methods: We compared the visual ratings of two readers using kappa statistics and correlated the results of visual and quantitative region of interest (ROI) analyses. The one reader had good experience in evaluating PIB images and the other had little previous experience.

Myocardial perfusion quantitation with 15O-labelled water PET: high reproducibility of the new cardiac analysis software (Carimas).

Purpose: Carimas (Cardiac Image Analysis System) is a new software package developed at the Turku PET Centre for the quantitation of PET studies of the heart with a broad range of tracers. The goal of this study was to assess the reproducibility of results the package provides for myocardial perfusion (MP) quantitation using (15)O-labelled water.

Methods: Four observers with various levels of experience in nuclear medicine independently analysed 20 MP studies (10 rest flow: "rest", 10 adenosine-induced hyperaemia: "stress").

Does initial breastfeeding lead to lower blood cholesterol in adult life? A quantitative review of the evidence.

Background: Earlier studies have suggested that infant feeding may program long-term changes in cholesterol metabolism.

Objective: We aimed to examine whether breastfeeding is associated with lower blood cholesterol concentrations in adulthood.

Design: The study consisted of a systematic review of published observational studies relating initial infant feeding status to blood cholesterol concentrations in adulthood (ie, aged >16 y).