8 research outputs found

    Prostatakarzinomfrüherkennung in Deutschland: Untersuchung einer repräsentativen Bevölkerungsstichprobe

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    In der vorliegenden Analyse werden Einflussfaktoren auf die Inanspruchnahme der Prostatakarzinomfrüherkennung (Prostata-KFU) in Deutschland untersucht. Eine repräsentative Stichprobe von 10.659 Männern im Alter von 45–70 (Mittel = 55,2) Jahren wurde nach ihrer Prostata-KFU-Inanspruchnahme befragt. Dabei wurden soziodemographische Faktoren (Alter, familiärer Status, Einkommen, Bildung, Krankenkassenstatus), familiäre Krebsbelastung, Einfluss einer ärztlichen Empfehlung, sowie Teilnahme an einer allgemeinen Gesundheitsuntersuchung („Checkup 35“) erfasst. Zwei Drittel der Stichprobe gibt an, mindestens einmal eine DRU erhalten zu haben, knapp die Hälfte der Männer (48%) hat bereits einen PSA-Test durchführen lassen. Die Anzahl der Männer, die regelmäßig an einer Prostata-KFU teilnehmen, ist deutlich geringer (44% DRU, 33% PSA). Die Inanspruchnahme der Prostata-KFU steigt mit dem Alter an, dagegen haben sozioökonomische Variablen wie Bildung fast keinen Einfluss. Eine familiäre Krebsbelastung erhöht die Wahrscheinlichkeit, an einer Prostata-KFU teilzunehmen. Die Regelmäßigkeit der Teilnahme bleibt davon unbeeinflusst. Die wichtigsten Prädiktoren der (regelmäßigen) Inanspruchnahme sind Arztempfehlung und Teilnahme an einer allgemeinen Gesundheitsuntersuchung („Checkup 35“)

    Gastroenteropancreatic Neuroendocrine Tumors: Standardizing Therapy Monitoring with Ga-DOTATOC PET/CT Using the Example of Somatostatin Receptor Radionuclide Therapy

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    The purpose of this study was to standardize therapy monitoring of hepatic metastases from gastroenteropancreatic neuroendocrine tumors (GEP-NETs) during the course of somatostatin receptor radionuclide therapy (SRRT). In 21 consecutive patients with nonresectable hepatic metastases of GEP-NETs, chromogranin A (CgA) and 68 Ga-DOTATOC PET/CT were compared before and after the last SRRT. On 68 Ga-DOTATOC PET/CT, the maximum standard uptake values (SUV max ) of normal liver and hepatic metastases were calculated. In addition, the volumes of hepatic metastases (volume of interest [VOI]) were measured using four cut-offs to separate normal liver tissue from metastases (SUV max of the normal liver plus 10% [VOI liver+10% ], 20% [VOI liver+20% ], 30% [VOI liver+30% ] and SUV = 10 [VOI 10SUV ]). The SUV max of the normal liver was below 10 (7.2 ± 1.3) in all patients and without significant changes. Overall therapy changes (Δ) per patient (mean [95% CI]) were statistically significant with p < .01 for ΔCgA = −43 (−69 to −17), ΔSUV max = −22 (−29 to −14), and ΔVOI 10SUV = −53 (−68 to −38)% and significant with p < .05 for ΔVOI liver+10% = −29 (−55 to −3)%, ΔVOI liver+20% = −32 (−62 to −2) and ΔVOI liver+30% = −37 (−66 to −8). Correlations were found only between ΔCgA and ΔVOI 10SUV ( r = .595; p < .01), ΔSUV max and ΔVOI 10SUV (0.629, p < .01), and SUV max and ΔSUV max ( r = .446; p < .05). 68 Ga-DOTATOC PET/CT allows volumetric therapy monitoring via an SUV-based cut-off separating hepatic metastases from normal liver tissue (10 SUV recommended)

    Prostate carcinoma: diffusion-weighted imaging as potential alternative to conventional MR and 11C-choline PET/CT for detection of bone metastases

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    In a technical development study approved by the institutional ethics committee, the feasibility of fast diffusion-weighted imaging as a replacement for conventional magnetic resonance (MR) imaging sequences (short inversion time inversion recovery [STIR] and T1-weighted spin echo [SE]) and positron emission tomography (PET)/computed tomography (CT) in the detection of skeletal metastases from prostate cancer was evaluated. MR imaging and carbon 11 ((11)C) choline PET/CT data from 11 consecutive prostate cancer patients with bone metastases were analyzed. Diffusion-weighted imaging appears to be equal, if not superior, to STIR and T1-weighted SE sequences and equally as effective as (11)C-choline PET/CT in detection of bone metastases in these patients. Diffusion-weighted imaging should be considered for further evaluation and comparisons with PET/CT for comprehensive whole-body staging and restaging in prostate and other cancers
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