Androgen deprivation therapy (ADT) remains a key approach in the treatment of prostate cancer (PCa). However, PCa inevitably relapses and becomes ADT resistant. Besides androgens, there is evidence that thyroid hormone thyroxine (T4) and its active form 3,5,3'-triiodo-L-thyronine (T3) are involved in the progression of PCa. Epidemiologic evidences show a higher incidence of PCa in men with elevated thyroid hormone levels. The thyroid hormone binding protein μ-Crystallin (CRYM) mediates intracellular thyroid hormone action by sequestering T3 and blocks its binding to cognate receptors (TRα/TRβ) in target tissues. We show in our study that low CRYM expression levels in PCa patients are associated with early biochemical recurrence and poor prognosis. Moreover, we found a disease stage-specific expression of CRYM in PCa. CRYM counteracted thyroid and androgen signaling and blocked intracellular choline uptake. CRYM inversely correlated with [18F]fluoromethylcholine (FMC) levels in positron emission tomography/magnetic resonance imaging of PCa patients. Our data suggest CRYM as a novel antagonist of T3- and androgen-mediated signaling in PCa. The role of CRYM could therefore be an essential control mechanism for the prevention of aggressive PCa growth.

• MeSH
• Receptors, Androgen genetics   metabolism   MeSH
• PC-3 Cells MeSH
• Choline administration & dosage   analogs & derivatives   MeSH
• Tissue Array Analysis MeSH
• Down-Regulation * MeSH
• Cohort Studies MeSH
• Crystallins genetics   metabolism   MeSH
• Humans MeSH
• Metabolomics MeSH
• Cell Line, Tumor MeSH
• Prostatic Neoplasms diagnostic imaging   genetics   metabolism   pathology   MeSH
• Positron Emission Tomography Computed Tomography MeSH
• Prognosis MeSH
• Receptors, Thyroid Hormone genetics   MeSH
• Gene Expression Regulation, Neoplastic MeSH
• Sequence Analysis, RNA MeSH
• Signal Transduction * MeSH
• Neoplasm Staging MeSH
• Gene Expression Profiling MeSH
• Triiodothyronine antagonists & inhibitors   metabolism   MeSH
• Check Tag
• Humans MeSH
• Male MeSH
• Publication type
• Journal Article MeSH
• Research Support, Non-U.S. Gov't MeSH

PURPOSE: Identification of pathologic parathyroid glands in primary hyperparathyroidism, traditionally based on neck ultrasound (US) and/or 99mTc-Sestamibi scintigraphy, can be challenging. PET/CT with 18F-Fluorocholine (18F-FCH) might improve the detection of pathologic parathyroid glands. We aimed at comparing the diagnostic performance of 18F-FCH-PET/CT with that of dual-phase dual-isotope parathyroid scintigraphy and neck US. METHODS: Thirty-four consecutive patients with primary hyperparathyroidism were prospectively enrolled, 7 had normocalcemic hyperparathyroidism, and 27 had classic hypercalcemic hyperparathyroidism. All patients underwent high-resolution neck US, dual-phase dual-isotope 99mTc-Pertechnetate/99mTc-Sestamibi scintigraphy, and 18F-FCH-PET/CT. RESULTS: In the whole patients' group, the detection rates of the abnormal parathyroid gland were 68% for neck US, 71% for 18F-FCH-PET/CT, and only 15% for 99mTc-Sestamibi scintigraphy. The corresponding figures in normocalcemic and hypercalcemic hyperparathyroidism were 57 and 70% for neck US, 70 and 71% for 18F-FCH-PET/CT, and 0 and 18% for 99mTc-Sestamibi scintigraphy, respectively. In the 17 patients in whom the abnormal parathyroid gland was identified, either at surgery or at fine needle aspiration cytology/biochemistry, the correct detection rate was 82% for neck US, 89% for 18F-FCH-PET/CT, and only 17% for 99mTc-Sestamibi scintigraphy. CONCLUSIONS: 18F-FCH-PET/CT can be considered a first-line imaging technique for the identification of pathologic parathyroid glands in patients with normocalcemic and hypercalcemic hyperparathyroidism, even when the parathyroid volume is small.

• MeSH
• Choline analogs & derivatives   MeSH
• Adult MeSH
• Hypercalcemia diagnostic imaging   pathology   surgery   MeSH
• Hyperparathyroidism diagnostic imaging   pathology   surgery   MeSH
• Cohort Studies MeSH
• Middle Aged MeSH
• Humans MeSH
• Parathyroid Neoplasms diagnostic imaging   pathology   surgery   MeSH
• Follow-Up Studies MeSH
• Positron Emission Tomography Computed Tomography methods   MeSH
• Prognosis MeSH
• Radiopharmaceuticals MeSH
• Radionuclide Imaging methods   MeSH
• Aged, 80 and over MeSH
• Aged MeSH
• Ultrasonography methods   MeSH
• Check Tag
• Adult MeSH
• Middle Aged MeSH
• Humans MeSH
• Male MeSH
• Aged, 80 and over MeSH
• Aged MeSH
• Female MeSH
• Publication type
• Journal Article MeSH

A nonagenarian hypertensive man with chronic kidney disease (CKD) was admitted to the emergency department for gastrointestinal symptoms and worsening symptoms of depression. Severe hypercalcemia (15.3 mg/dL) was found and he was hospitalized. Fluids, loop diuretics and glucocorticoids were administered intravenously, which partially reduced calcium levels over a few days and improved his clinical condition. PTH levels proved increased (306 pg/mL) and 25-OHD levels were reduced; primary hyperparathyroidism (PHPT) was diagnosed. Neck ultrasonography (USG) did not show parathyroid enlargement, nor did 99mTechnetium-sestamibi (SESTAMIBI) scintigraphy reveal hyperfunctioning parathyroid glands. By contrast, 18F-choline PET/CT evidenced a nodule located close to the oesophagus, behind the right thyroid lobe, which proved compatible with a hyperfunctioning parathyroid gland. Since the patient declined surgery, and zoledronate was unfit owing to areas of rarefaction of the jaw, the calcimimetic cinacalcet was started; the dosage was progressively titrated up to 120 mg/day with normalisation of calcium levels over time. PTH levels, however, proved erratic and showed an upward trend over the first year of therapy; however its levels partially decreased following increase of vitamin D levels by replacement therapy. Cinacalcet is a useful and safe drug, which can normalise calcium levels and improve the clinical condition, even in very old patients with severe PHPT who decline or are unfit for surgery.

• MeSH
• Choline MeSH
• Cinacalcet therapeutic use   MeSH
• Hypercalcemia etiology   MeSH
• Calcimimetic Agents therapeutic use   MeSH
• Humans MeSH
• Positron Emission Tomography Computed Tomography methods   MeSH
• Hyperparathyroidism, Primary complications   diagnostic imaging   drug therapy   MeSH
• Radiopharmaceuticals MeSH
• Fluorine Radioisotopes MeSH
• Aged, 80 and over MeSH
• Severity of Illness Index MeSH
• Check Tag
• Humans MeSH
• Male MeSH
• Aged, 80 and over MeSH
• Publication type
• Journal Article MeSH
• Case Reports MeSH

Cíl: Zjistit přínos 18F-fluorocholinového PET/ CT (18F-FCH PET/CT) pro cílenou biopsii prostaty u pacientů s opakovaně negativními biopsiemi a trvajícím podezřením na přítomnost karcinomu prostaty. Soubor pacientů a metoda: Od ledna 2013 do května 2015 jsme provedli 18-F-FCH PET/CT cholinové PET CT vyšetření u 30 pacientů. Indikačním kritériem bylo PSA nad 10 ng/ml a prodělání více než tři biopsií prostaty, včetně biopsie saturační. Pokud to bylo možné, pak pacienti předem prodělali šestitýdenní kůru ATB terapie Doxycyklinem 100mg 2x denně k eliminaci zánětu, a tím možným falešně pozitivním nálezům na 18F-FCH PET/CT. Poté bylo provedeno PET/CT vyšetření a následně s odstupem byla provedena cílená biopsie ložisek popsaných na 18F-FCH PET/CT. Cílená biopsie byla provedena pod sonografickou kontrolou transrektálně za pomoci kognitivní fúze PET/CT obrazu s real-time sonografickým záznamem. Byly odebírány jen vzorky z ložisek popsaných na PET/CT. Výsledky: Od ledna 2013 do května 2015 absolvovalo 18F-FCH PET/CT 30 pacientů. Průměrný věk pacientů byl 66 let v rozmezí 57–75 let. U 14 z nich jsme potvrdili karcinom prostaty, což činí 46% záchyt ve skupině rebiopsií. Všichni tito pacienti měli Gleasonovo skóre vyšší než sedm a PSA vyšší než 20 ng/ml. Závěr: V našem souboru jsme prokázali přínos 18F-FCH PET/CT u pacientů s opakovaně negativními biopsiemi a pokračující elevací PSA, u kterých nebyl karcinom prostaty standardním způsobem detekován. Ložisko vyznačené pomocí 18F-cholinufluorocholinu umožnilo cílenou biopsii pod sonografickou kontrolou. V současnosti není jednoznačné doporučení, jak postupovat u pacientů, u kterých máme opakovaně negativní biopsie prostaty a trvá podezření na přítomnost karcinomu. Využití 18F-FCH PET/CT se jeví jako jedna z mož- ností.

Aim: The aim of the study was to determine the benefits of 18F-fluorocholine PET/CT in patients with repeated negative biopsies and continued suspicion of prostate carcinoma. Material and methods: 18F-fluorocholine PET/CT (18F-FCH PET/CT) was performed with 30 patients from January 2013 until May 2015. Indication criteria were PSA above 10 ng/ml and three biopsies. If possible patients underwent six weeks treatment of antibiotic therapy with Doxycyclin 100mg twice per day to eliminate inflammation and possible false findings in PET/CT. Then PET/CT was performed with following targeted biopsy of focus from 18F-FCH PET/CT. Targeted biopsy was done under the sonographic transrectal control with the help of cognitive fusion PET/CT image with real-time sonography. Only samples from centers identified with PET/CT were taken. Results: From January 2013 until May 2015 30 patients underwent 18F-FCH PET/CT. Average age of patients was 66 years (57–75 years). We confirmed prostate cancer in 14 of them which is 46 % success in rebiopsy group. All these patients had Gleason score above seven and PSA higher than 20 ng/ml. Conclusions: We have shown in our sample the benefits of 18F-cholinFCH PET/CT in patients with repeated negative biopsies and continued PSA elevation, where prostate carcinoma was not detected in standard biopsies. The use of 18F-FCH PET/CT seems promising in diagnostic of prostate cancer where 18F-fluorocholine can be found also in slow growing cells of majority of prostate carcinoma. Using this method we can diagnose also tumors, which are located outside of typical areas in the peripheral zone and therefore can be missed even in repeated biopsies.

• MeSH
• Biopsy methods   MeSH
• Choline * analogs & derivatives   MeSH
• False Negative Reactions MeSH
• Fluorodeoxyglucose F18 therapeutic use   MeSH
• Humans MeSH
• Prostatic Neoplasms * diagnostic imaging   diagnosis   pathology   MeSH
• Positron Emission Tomography Computed Tomography methods   MeSH
• Prospective Studies MeSH
• Radiopharmaceuticals therapeutic use   MeSH
• Check Tag
• Humans MeSH

Karcinom prostaty (PC) je jedním z nejčastějších zhoubných nádorů u mužů. Vyšetření karcinomu prostaty včetně jeho recidiv či metastáz pomocí konvenčních zobrazovacích metod je většinou relativně málo senzitivní. Nejčastěji používané radiofarmakum pro pozitronovou emisní tomografii (PET), fluorodeoxyglukóza, vykazuje při zobrazování karcinomu prostaty rovněž nízkou senzitivitu. V současné době je v ČR dostupný fluorem značený cholin (FCH), který je citlivý především při zobrazování kostních a měkkotkáňových metastáz karcinomu prostaty a stává se proto významným diagnostickým prostředkem především při posuzování relapsu karcinomu prostaty.

Prostate cancer (PC) is one of the most common malignant tumours in men. Screening for prostate cancer, including its recurrence or metastases, using conventional imaging techniques is usually relatively poorly sensitive. Fluorodeoxyglucose, the most widely used radiopharmaceutical for positron emission tomography (PET), also exhibits low sensitivity for detecting prostate cancer. Fluorine- labelled choline (FCH) that is especially sensitive in detecting bone and soft-tissue metastases of prostate cancer is currently available in the Czech Republic and is thus becoming a major diagnostic tool, particularly in evaluating the relapse of prostate cancer.

• Keywords
• 18F-fluoromethylcholin,
• MeSH
• Choline * analogs & derivatives   MeSH
• Humans MeSH
• Neoplasm Recurrence, Local MeSH
• Neoplasm Metastasis MeSH
• Prostatic Neoplasms * MeSH
• Tomography, X-Ray Computed methods   MeSH
• Positron-Emission Tomography methods   MeSH
• Radiopharmaceuticals MeSH
• Radionuclide Imaging methods   MeSH
• Fluorine Radioisotopes * MeSH
• Sensitivity and Specificity MeSH
• Check Tag
• Humans MeSH
• Male MeSH
• Publication type
• Review MeSH

TABLE OF CONTENTS: A1 68Ga-PSMA PET/CT in staging and restaging of Prostate Cancer Patients: comparative study with 18F-Choline PET/CTW Langsteger, A Rezaee, W Loidl, HS Geinitz, F Fitz, M Steinmair, G Broinger, L Pallwien-Prettner, M BeheshtiA2 F18 Choline PET - CT: an accurate diagnostic tool for the detection of parathyroid adenoma?L Imamovic, M Beheshti, G Rendl, D Hackl, O Tsybrovsky, M Steinmair, K Emmanuel, F Moinfar, C Pirich, W LangstegerA3 [18F]Fluoro-DOPA-PET/CT in the primary diagnosis of medullary thyroid carcinomaA Bytyqi, G Karanikas, M Mayerhöfer, O Koperek, B Niederle, M HartenbachA4 Variations of clinical PET/MR operations: An international survey on the clinical utilization of PET/MRIT Beyer, K Herrmann, J CzerninA5 Standard Dixon-based attenuation correction in combined PET/MRI: Reproducibility and the possibility of Lean body mass estimationI Rausch, P Rust, MD DiFranco, M Lassen, A Stadlbauer, ME Mayerhöfer, M Hartenbach, M Hacker, T BeyerA6 High resolution digital FDG PET/MRI imaging for assessment of ACL graft viabilityK Binzel, R Magnussen, W Wei, MU Knopp, DC Flanigan, C Kaeding, MV KnoppA7 Using pre-existing hematotoxicity as predictor for severe side effects and number of treatment cycles of Xofigo therapyA Leisser, M Nejabat, M Hartenbach, G Kramer, M Krainer, M Hacker, A HaugA8 QDOSE - comprehensive software solution for internal dose assessmentWencke Lehnert, Karl Schmidt, Sharok Kimiaei, Marcus Bronzel, Andreas KlugeA9 Clinical impact of Time-of-Flight on next-generation digital PET imaging of Yttrium-90 radioactivity following liver radioembolizationCL Wright, K Binzel, J Zhang, Evan Wuthrick, Piotr Maniawski, MV KnoppA10 Snakes in patients! Lessons learned from programming active contours for automated organ segmentationM Blaickner, E Rados, A Huber, M Dulovits, H Kulkarni, S Wiessalla, C Schuchardt, RP Baum, B Knäusl, D GeorgA11 Influence of a genetic polymorphism on brain uptake of the dual ABCB1/ABCG2 substrate [11C]tariquidarM Bauer, B Wulkersdorfer, W Wadsak, C Philippe, H Haslacher, M Zeitlinger, O LangerA12 Outcome prediction of temporal lobe epilepsy surgery from P-glycoprotein activity. Pooled analysis of (R)-[11C]-verapamil PET data from two European centresM Bauer, M Feldmann, R Karch, W Wadsak, M Zeitlinger, MJ Koepp, M-C Asselin, E Pataraia, O LangerA13 In-vitro and in-vivo characterization of [18F]FE@SNAP and derivatives for the visualization of the melanin concentrating hormone receptor 1M Zeilinger, C Philippe, M Dumanic, F Pichler, J Pilz, M Hacker, W Wadsak, M MitterhauserA14 Reducing time in quality control leads to higher specific radioactivity of short-lived radiotracersL Nics, B Steiner, M Hacker, M Mitterhauser, W WadsakA15 In vitro 11C-erlotinib binding experiments in cancer cell lines with epidermal growth factor receptor mutationsA Traxl, Thomas Wanek, Kushtrim Kryeziu, Severin Mairinger, Johann Stanek, Walter Berger, Claudia Kuntner, Oliver LangerA16 7-[11C]methyl-6-bromopurine, a PET tracer to measure brain Mrp1 function: radiosynthesis and first PET evaluation in miceS Mairinger, T Wanek, A Traxl, M Krohn, J Stanek, T Filip, M Sauberer, C Kuntner, J Pahnke, O LangerA17 18F labeled azidoglucose derivatives as "click" agents for pretargeted PET imagingD Svatunek, C Denk, M Wilkovitsch, T Wanek, T Filip, C Kuntner-Hannes, J Fröhlich, H MikulaA18 Bioorthogonal tools for PET imaging: development of radiolabeled 1,2,4,5-TetrazinesC Denk, D Svatunek, T Wanek, S Mairinger, J Stanek, T Filip, J Fröhlich, H Mikula, C Kuntner-HannesA19 Preclinical evaluation of [18F]FE@SUPPY- a new PET-tracer for oncologyT Balber, J Singer, J Fazekas, C Rami-Mark, N Berroterán-Infante, E Jensen-Jarolim, W Wadsak, M Hacker, H Viernstein, M MitterhauserA20 Investigation of Small [18F]-Fluoroalkylazides for Rapid Radiolabeling and In Vivo Click ChemistryC Denk, D Svatunek, B Sohr, H Mikula, J Fröhlich, T Wanek, C Kuntner-Hannes, T FilipA21 Microfluidic 68Ga-radiolabeling of PSMA-HBED-CC using a flow-through reactorS Pfaff, C Philippe, M Mitterhauser, M Hartenbach, M Hacker, W WadsakA22 Influence of 24-nor-ursodeoxycholic acid on hepatic disposition of [18F]ciprofloxacin measured with positron emission tomographyT Wanek, E Halilbasic, M Visentin, S Mairinger, B Stieger, C Kuntner, M Trauner, O LangerA23 Automated 18F-flumazenil production using chemically resistant disposable cassettesP Lam, M Aistleitner, R Eichinger, C ArtnerA24 Similarities and differences in the synthesis and quality control of 177Lu-DOTA-TATE, 177Lu -HA-DOTA-TATE and 177Lu-DOTA-PSMA (PSMA-617)H Eidherr, C Vraka, A Haug, M Mitterhauser, L Nics, M Hartenbach, M Hacker, W WadsakA25 68Ga- and 177Lu-labelling of PSMA-617H Kvaternik, R Müller, D Hausberger, C Zink, RM AignerA26 Radiolabelling of liposomes with 67Ga and biodistribution studies after administration by an aerosol inhalation systemU Cossío, M Asensio, A Montes, S Akhtar, Y te Welscher, R van Nostrum, V Gómez-Vallejo, J LlopA27 Fully automated quantification of DaTscan SPECT: Integration of age and gender differencesF VandeVyver, T Barclay, N Lippens, M TrochA28 Lesion-to-background ratio in co-registered 18F-FET PET/MR imaging - is it a valuable tool to differentiate between low grade and high grade brain tumor?L Hehenwarter, B Egger, J Holzmannhofer, M Rodrigues-Radischat, C PirichA29 [11C]-methionine PET in gliomas - a retrospective data analysis of 166 patientsN Pötsch, I Rausch, D Wilhelm, M Weber, J Furtner, G Karanikas, A Wöhrer, M Mitterhauser, M Hacker, T Traub-WeidingerA30 18F-Fluorocholine versus 18F-Fluorodeoxyglucose for PET/CT imaging in patients with relapsed or progressive multiple myeloma: a pilot studyT Cassou-Mounat, S Balogova, V Nataf, M Calzada, V Huchet, K Kerrou, J-Y Devaux, M Mohty, L Garderet, J-N TalbotA31 Prognostic benefit of additional SPECT/CT in sentinel lymph node mapping of breast cancer patientsS Stanzel, G Pregartner, T Schwarz, V Bjelic-Radisic, B Liegl-Atzwanger, R AignerA32 Evaluation of diagnostic value of TOF-18F-FDG PET/CT in patients with suspected pancreatic cancerS Stanzel, F Quehenberger, RM AignerA33 New quantification method for diagnosis of primary hyperpatahyroidism lesions and differential diagnosis vs thyropid nodular disease in dynamic scintigraphyA Koljević Marković, Milica Janković, V Miler Jerković, M Paskaš, G Pupić, R Džodić, D PopovićA34 A rare case of diffuse pancreatic involvement in patient with merkel cell carcinoma detected by 18F-FDGMC Fornito, D FamiliariA35 TSH-stimulated 18F-FDG PET/CT in the diagnosis of recurrent/metastatic radioiodine-negative differentiated thyroid carcinomas in patients with various thyroglobuline levelsP Koranda, H Polzerová, I Metelková, L Henzlová, R Formánek, E Buriánková, M KamínekA36 Breast Dose from lactation following I131 treatmentWH Thomson, C LewisA37 A new concept for performing SeHCAT studies with the gamma cameraWH Thomson, J O'Brien, G James, A NotghiA38 Whole body F-18-FDG-PET and tuberculosis: sensitivity compared to x-ray-CTH Huber, I Stelzmüller, R Wunn, M Mandl, F Fellner, B Lamprecht, M GabrielA39 Emerging role 18F-FDG PET-CT in the diagnosis and follow-up of the infection in heartware ventricular assist system (HVAD)MC Fornito, G LeonardiA40 Validation of Poisson resampling softwareWH Thomson, J O'Brien, G JamesA41 Protection of PET nuclear medicine personnel: problems in satisfying dose limit requirementsJ Hudzietzová, J Sabol, M Fülöp.

• Publication type
• Journal Article MeSH

Karcinom prostaty (PC) je jedním z nejčastějších zhoubných nádorů u mužů. Vyšetření karcinomu prostaty včetně jeho recidiv či metastáz pomocí konvenčních zobrazovacích metod je většinou relativně málo senzitivní. Nejčastěji používané radiofarmakum pro pozitronovou emisní tomografii (PET), fluorodeoxyglukóza, vykazuje při zobrazování karcinomu prostaty rovněž nízkou senzitivitu. V současné době je v ČR dostupný fluorem značený cholin (FCH), který je citlivý především při zobrazování kostních a měkkotkáňových metastáz karcinomu prostaty a stává se proto významným diagnostickým prostředkem především při posuzování relapsu karcinomu prostaty.

Prostate cancer (PC) is one of the most common malignant tumours in men. Screening for prostate cancer, including its recurrence or metastases, using conventional imaging techniques is usually relatively poorly sensitive. Fluorodeoxyglucose, the most widely used radiopharmaceutical for positron emission tomography (PET), also exhibits low sensitivity for detecting prostate cancer. Fluorine- labelled choline (FCH) that is especially sensitive in detecting bone and soft-tissue metastases of prostate cancer is currently available in the Czech Republic and is thus becoming a major diagnostic tool, particularly in evaluating the relapse of prostate cancer.

• Keywords
• 18F-fluoromethylcholin,
• MeSH
• Choline * analogs & derivatives   MeSH
• Fluorodeoxyglucose F18 MeSH
• Humans MeSH
• Lymphatic Metastasis radiography   MeSH
• Bone Neoplasms radiography   secondary   MeSH
• Prostatic Neoplasms * radiography   MeSH
• Tomography, X-Ray Computed MeSH
• Positron-Emission Tomography * methods   MeSH
• Radiopharmaceuticals MeSH
• Fluorine Radioisotopes MeSH
• Sensitivity and Specificity MeSH
• Neoplasm Staging MeSH
• Check Tag
• Humans MeSH
• Male MeSH
• Publication type
• Review MeSH

Správny staging hepatocelulárneho karcinómu (HCC) má zásadný význam pre optimálnu voľbu terapeutického postupu. Pomocou celotelového funkčného PET zobrazenia (vo fúzii s CT alebo MRI) možno získať dopĺňajúcu informáciu k výsledkom morfologických zobrazovacích metód. Na prekonanie nedostatočnej senzitívnosti 18F-fluórodeoxyglukózy (FDG) pri HCC boli navrhnuté markery lipidového metabolizmu, najmä cholín (11C-cholín) a jeho analógy 18F-fluórocholín (FCH) a 18F-fluóroetylcholín (FEC), pre ktoré bola potvrdená dostatočná senzitívnosť pre dobre, stredne aj zle diferencovaný HCC. Jednotlivé lézie resp. oblasti HCC však môžu vykazovať rôzny stupeň diferenciácie, z čoho vyplýva ich variabilne vyznačený glukózový a lipidový metabolizmus. V súčasnosti je tak za najvýkonnejšiu funkčnú zobrazovaciu metódu primárneho a metastatického HCC považovaná kombinácia FDG a markera lipidového metabolizmu. Funkčná informácia získaná pomocou kombinácie FDG a markera lipidového metabolizmu má tiež potenciál poskytnúť užitočnú prognostickú informáciu: vizualizácia HCC pomocou FDG je asociovaná so zlou prognózou, zatiaľ čo jeho vizualizácia pomocou markera lipidového metabolizmu indikuje priaznivú prognózu. Spomedzi non-HCC malígnych primárnych nádorov pečene u dospelých bola pozorovaná akumulácia markerov lipidového metabolizmu len v prípade cholangiokarcinómu. FCH môže byť užitočný aj pri funkčnom zobrazení hepatoblastómu u detí. Adenóm pečene je len zriedkavo vizualizovaný pomocou FDG alebo markerov lipidového metabolizmu, naopak fokálna nodulárna hyperplázia (FNH) zvyčajne akumuluje markery lipidového metabolizmu a môže byť zdrojom falošne pozitívnych nálezov pri pátraní po HCC, ale nebýva vizualizovaná pomocou FDG. Pri diferenciálnej diagnostike adenómu, ktorý potenciálne môže degenerovať do karcinómu, a FNH môže byť jeho zvýšená akumulácia markerov lipidového metabolizmu nápomocná.

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• Keywords
• 18F-fluoroetylcholin, 18F-fluorocholin, 11C-cholin,
• MeSH
• Choline * analogs & derivatives   diagnostic use   MeSH
• Diagnosis, Differential MeSH
• Fluorodeoxyglucose F18 diagnostic use   MeSH
• Focal Nodular Hyperplasia MeSH
• Hepatoblastoma MeSH
• Carcinoma, Hepatocellular * MeSH
• Humans MeSH
• Liver Neoplasms MeSH
• Tomography, X-Ray Computed * MeSH
• Positron-Emission Tomography * MeSH
• Radiopharmaceuticals diagnostic use   MeSH
• Fluorine Radioisotopes diagnostic use   MeSH
• Sensitivity and Specificity MeSH
• Neoplasm Staging MeSH
• Check Tag
• Humans MeSH
• Publication type
• Review MeSH

Cíl: Posoudit vlastní zkušenosti s prováděním PET/CT s fluorocholinem (18F-FCH-PET/CT) u karcinomu prostaty. Metodika: Byla provedena analýza indikací a výsledků 172 vyšetření 18F-FCH-PET/ CT u 139 mužů, průměrný věk nemocných byl 62,5 v rozpětí 48-81 let. Věnovali jsme se výskytu metastáz, vztahu hladiny PSA u biochemického relaps a přítomnosti nádorové tkáně po radikální léčbě a také porovnání bi-optického nálezu s nálezem PET/CT. Výsledky: U nemocných s hladinou PSA 2-5 ng/1 jsme nalezli metastázy nebo lokální rekurenci v 77,4 %, u hladin nad 5 ng/1 ve 100 %. Při porovnání nálezů biopsie s nálezy PET/CT jsme dosáhli senzitivity 96 %, specificity 83,3 %. Závěr: 18F-FCH-PET/CT je, jak ukazují naše výsledky, efektivním nástrojem v posuzování stagingu i restagingu karcinomu prostaty.

Aim: To evaluate our own experience with fluorocholine 18F-FCH-PET/CT in prostatic carcinoma. Method: the analysis of the indications was performed in sample of 172 18F-FCH-PET/CT in 139 male patients, with mean age of 62.5 years in range 48-81 years. We evaluated number and site of metastases, the relation of PSA level in biochemical relaps with the presence of FCH accumulation in tumorous tissue and finally we correlate the findings of biopsy with results of PET/CT. Results: IN patients with PSA level 2-5 ng/1 we found in cases of biochemical relapse the accumulating tumorous tissue of local recurrence or metastases in 77.4%, in those patients with PSA level above 5 ng/1 in 100% of cases. In comparison of biopsies with PET/CT we found sensitivity 96% and specificity 83.3%. Conclusion: 18F-FCH-PET/CT is a valuable tool in evaluation of staging or restaging in patients with prostatic carcinoma.

• MeSH
• Choline analogs & derivatives   diagnostic use   MeSH
• Fluorodeoxyglucose F18 * diagnostic use   MeSH
• Middle Aged MeSH
• Humans MeSH
• Neoplasm Metastasis MeSH
• Prostatic Neoplasms * MeSH
• Positron-Emission Tomography * methods   MeSH
• Aged, 80 and over MeSH
• Aged MeSH
• Neoplasm Staging methods   MeSH
• Check Tag
• Middle Aged MeSH
• Humans MeSH
• Male MeSH
• Aged, 80 and over MeSH
• Aged MeSH
• Publication type
• Research Support, Non-U.S. Gov't MeSH

Indikace zobrazovacích metod prodělaly v posledních letech mimořádný vývoj. Spojené aplikace magnetické rezonance, jako jsou spektroskopie, difuzní zobrazení a farmakokinetická analýza pomohly zařadit do diagnostického algoritmu karcinomu prostaty efektivní komplexní vyšetřovací protokol pro nemocné se zvýšenými hladinami PSA. Pro případ nutností přesného posouzení lokálního šíření tumoru zůstávají nejefektivnější T2 vážené obrazy s vysokým prostorovým rozlišením. Zavedení cholinu značného fluorem 18 do klinické praxe umožnilo rutinní použití PET/CT nejen pro vlastní detekci nádoru, ale i pro hodnocení uzlinových a kostních metastáz. Při restagingu je odhalení příčiny biochemického relapsu onemocnění také možnou indikací 18F-FCH-PET/CT, které vykazuje vyšší úspěšnost než magnetická rezonance. Nádorem vyvolanou indukci osteoblastické aktivity u ve skeletu disseminovaného onemocnění je možné hodnotit pomocí 18F-NaF-PET/CT.

The indications of the imaging methods underwent the exceptional evolution in last years. The united applications of the magnetic resonance imaging including the spectroscopy, diffusion imaging and pharmacokinetic evaluation helped to introduce the complex diagnostic algorithm to patients with pathologically elevated PSA levels. In cases of needed precise local staging, the most effective modality remains general T2 weighted imaging using high resolution data acquisition. The introduction of the choline labeled with fluorine 18 enables the routine clinical use of PET/CT not only in detection of the tumor, but also in detection of lymph node and skeleton dissemination. In cases of restaging of the disease including biochemically relapsing tumor, the 18F-FCH-PET/ CT reached the important improvement in comparison to magnetic resonance. The tumor-induced osteoblastic activity in skeletally disseminated prostatic cancer could be assessed using 18F-NaF-PET/CT.

• Keywords
• PSA, 18F-fluorocholin, 18F-natriumfluorid,
• MeSH
• Choline analogs & derivatives   diagnostic use   MeSH
• Diagnostic Techniques and Procedures MeSH
• Humans MeSH
• Magnetic Resonance Spectroscopy MeSH
• Magnetic Resonance Imaging utilization   MeSH
• Neoplasm Metastasis MeSH
• Multimodal Imaging MeSH
• Neoplasms, Bone Tissue MeSH
• Prostatic Neoplasms diagnosis   MeSH
• Prostate-Specific Antigen MeSH
• Radiopharmaceuticals administration & dosage   diagnostic use   MeSH
• Statistics as Topic MeSH
• Check Tag
• Humans MeSH
• Male MeSH
• Publication type
• Review MeSH