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  1. Article: Alterations of Sexual and Erectile Functions after Brachytherapy for Prostate Cancer Based on Patient-Reported Questionnaires.

    Gesztesi, László / Kocsis, Zsuzsa S / Jorgo, Kliton / Fröhlich, Georgina / Polgár, Csaba / Ágoston, Péter

    Prostate cancer

    2024  Volume 2024, Page(s) 5729185

    Abstract: The aim of the study was to compare the side effects of high-dose-rate brachytherapy (HDRBT) and low-dose-rate brachytherapy (LDRBT), with a particular focus on the effects on sexual functions and sexual well-being (PROMOBRA study, NCT02258087). ... ...

    Abstract The aim of the study was to compare the side effects of high-dose-rate brachytherapy (HDRBT) and low-dose-rate brachytherapy (LDRBT), with a particular focus on the effects on sexual functions and sexual well-being (PROMOBRA study, NCT02258087). Localized low-risk and low-intermediate-risk prostate cancer patients were treated with mono LDR (
    Language English
    Publishing date 2024-01-25
    Publishing country Egypt
    Document type Journal Article
    ZDB-ID 2627965-4
    ISSN 2090-312X ; 2090-3111
    ISSN (online) 2090-312X
    ISSN 2090-3111
    DOI 10.1155/2024/5729185
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  2. Article ; Online: Dosimetric comparison between treatment plans of patients treated with low-dose-rate vs. high-dose-rate interstitial prostate brachytherapy as monotherapy: Initial findings of a randomized clinical trial.

    Major, T / Polgár, C / Jorgo, K / Stelczer, G / Ágoston, P

    Brachytherapy

    2017  Volume 16, Issue 3, Page(s) 608–615

    Abstract: Purpose: The aim of this study was to compare the dosimetry of intraoperative dose plans of prostate cancer patients treated with low-dose-rate (LDR) and high-dose-rate (HDR) interstitial brachytherapy (BT).: Methods and materials: A randomized ... ...

    Abstract Purpose: The aim of this study was to compare the dosimetry of intraoperative dose plans of prostate cancer patients treated with low-dose-rate (LDR) and high-dose-rate (HDR) interstitial brachytherapy (BT).
    Methods and materials: A randomized clinical trial was initiated at our institution to compare the results and side effects of LDR and HDR BT as monotherapy in the treatment of early, organ-confined prostate cancer patients. Eighty-seven patients were randomly assigned to receive HDR afterloading BT with one fraction of 19 Gy or permanent LDR
    Results: The V
    Conclusions: Both techniques provided acceptable target volume coverage with a slightly higher value with the LDR technique. The dose distributions were more homogeneous and conformal, and both urethra and rectum were better protected with the HDR technique.
    MeSH term(s) Brachytherapy/adverse effects ; Brachytherapy/methods ; Humans ; Iodine Radioisotopes ; Male ; Needles ; Organs at Risk ; Prostatic Neoplasms/radiotherapy ; Radiation Dosage ; Radiotherapy Dosage ; Radiotherapy Planning, Computer-Assisted ; Rectum ; Urethra
    Chemical Substances Iodine Radioisotopes ; Iodine-125 (GVO776611R)
    Language English
    Publishing date 2017-03-18
    Publishing country United States
    Document type Comparative Study ; Journal Article ; Randomized Controlled Trial
    ZDB-ID 2098608-7
    ISSN 1873-1449 ; 1538-4721
    ISSN (online) 1873-1449
    ISSN 1538-4721
    DOI 10.1016/j.brachy.2017.02.003
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  3. Article: Biological dose summation of intensity-modulated arc therapy and image-guided high-dose-rate interstitial brachytherapy in intermediate- and high-risk prostate cancer.

    Fröhlich, Georgina / Ágoston, Péter / Jorgo, Kliton / Polgár, Csaba / Major, Tibor

    Journal of contemporary brachytherapy

    2020  Volume 12, Issue 3, Page(s) 260–266

    Abstract: Purpose: To present an alternative method for summing biologically effective doses of intensity-modulated arc therapy (IMAT) as teletherapy (TT), with interstitial high-dose-rate (HDR) brachytherapy (BT) boost in prostate cancer. Total doses using IMAT ... ...

    Abstract Purpose: To present an alternative method for summing biologically effective doses of intensity-modulated arc therapy (IMAT) as teletherapy (TT), with interstitial high-dose-rate (HDR) brachytherapy (BT) boost in prostate cancer. Total doses using IMAT boost was compared with BT boost using our method.
    Material and methods: Initially, 25 IMAT TT plus interstitial HDR-BT plans were included, and additional plans using IMAT TT boost were created. The prescribed dose was 2/44 Gy to the whole pelvis, 2/60 Gy to the prostate and seminal vesicles, and 1 × 10 Gy BT or 2/18 Gy IMAT TT to the prostate. Teletherapy computed tomography (CT) was registered with ultrasound (US) of BT, and the most exposed volume of critical organs in BT were identified on these CT images. The minimal dose of these from IMAT TT was summed with their BT dose, and these EQD
    Results: D
    Conclusions: Based on our biological dose summation method, the total dose of prostate is higher using BT boost than the IMAT. BT boost yields lower rectum, bladder, and hips doses, but higher dose to urethra. UDC overestimates rectum and bladder dose and underestimates the dose to urethra.
    Language English
    Publishing date 2020-06-30
    Publishing country Poland
    Document type Journal Article
    ZDB-ID 2627721-9
    ISSN 2081-2841 ; 1689-832X
    ISSN (online) 2081-2841
    ISSN 1689-832X
    DOI 10.5114/jcb.2020.96868
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: The value of brachytherapy in the age of advanced external beam radiotherapy: a review of the literature in terms of dosimetry.

    Major, Tibor / Fröhlich, Georgina / Ágoston, Péter / Polgár, Csaba / Takácsi-Nagy, Zoltán

    Strahlentherapie und Onkologie : Organ der Deutschen Rontgengesellschaft ... [et al

    2021  Volume 198, Issue 2, Page(s) 93–109

    Abstract: Brachytherapy (BT) has long been used for successful treatment of various tumour entities, including prostate, breast and gynaecological cancer. However, particularly due to advances in modern external beam techniques such as intensity-modulated ... ...

    Abstract Brachytherapy (BT) has long been used for successful treatment of various tumour entities, including prostate, breast and gynaecological cancer. However, particularly due to advances in modern external beam techniques such as intensity-modulated radiotherapy (IMRT), volume modulated arc therapy (VMAT) and stereotactic body radiotherapy (SBRT), there are concerns about its future. Based on a comprehensive literature review, this article aims to summarize the role of BT in cancer treatment and highlight its particular dosimetric advantages. The authors conclude that image-guided BT supported by inverse dose planning will successfully compete with high-tech EBRT in the future and continue to serve as a valuable modality for cancer treatment.
    MeSH term(s) Brachytherapy/methods ; Humans ; Male ; Radiometry ; Radiotherapy Dosage ; Radiotherapy Planning, Computer-Assisted/methods ; Radiotherapy, Intensity-Modulated/methods
    Language English
    Publishing date 2021-11-01
    Publishing country Germany
    Document type Journal Article ; Review
    ZDB-ID 84983-2
    ISSN 1439-099X ; 0179-7158 ; 0039-2073
    ISSN (online) 1439-099X
    ISSN 0179-7158 ; 0039-2073
    DOI 10.1007/s00066-021-01867-1
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  5. Article ; Online: Early effects of different irradiation techniques used in the treatment of prostate cancer on urination

    Nahaji, István / Fröhlich, Georgina / Mavrogenis, Stelios / Szabó, János Ferenc / Polgár, Csaba / Ágoston, Péter

    Orvosi hetilap

    2021  Volume 162, Issue 33, Page(s) 1328–1334

    Title translation A prosztatarák kezelésében alkalmazott besugárzási technikák vizelési képességre gyakorolt korai hatása.
    MeSH term(s) Humans ; Male ; Prostatic Neoplasms/radiotherapy ; Urination
    Language Hungarian
    Publishing date 2021-08-15
    Publishing country Hungary
    Document type Journal Article
    ZDB-ID 123879-6
    ISSN 1788-6120 ; 0030-6002
    ISSN (online) 1788-6120
    ISSN 0030-6002
    DOI 10.1556/650.2021.32144
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  6. Article ; Online: The first experience in Hungary with split-course multimodal treatment in high risk bladder cancer

    Fazekas, Fruzsina / Bíró, Krisztina / Ágoston, Péter / Nagyiványi, Krisztián / Gonda, Gábor / Buzogány, István / Beöthe, Tamás

    Orvosi hetilap

    2021  Volume 162, Issue 50, Page(s) 2017–2022

    Abstract: Összefoglaló. Az izominvazív vagy nagyon nagy kockázatú, felületes hólyagdaganatok kezelésének arany standardja a radikális húgyhólyag-eltávolítás (cystectomia). Válogatott betegek esetében hasonló hatékonyságú kezelés lehet az osztott dózisú (split- ... ...

    Title translation Az osztott dózisú trimodális kezelés első hazai alkalmazása nagy kockázatú húgyhólyagdaganat esetében.
    Abstract Összefoglaló. Az izominvazív vagy nagyon nagy kockázatú, felületes hólyagdaganatok kezelésének arany standardja a radikális húgyhólyag-eltávolítás (cystectomia). Válogatott betegek esetében hasonló hatékonyságú kezelés lehet az osztott dózisú (split-course) trimodális terápia, az endoszkópos tumorreszekció és a kemoirradiáció megszakított ciklusokkal történő alkalmazása. A split-course trimodális terápia a radikális cystectomiához hasonló eredményességű, a későbbi életminőség szempontjából pedig ígéretes kezelési lehetőség lehet megfelelően kiválasztott betegek esetében. Hazánkban első alkalommal végzett kezelést ismertetünk a téma szakirodalmi áttekintése mellett. A húgyhólyagtumor transurethralis reszekciója, maximális eradikációja után kemoirradiáció kezdődik, melyet 45 Gy sugárdózis elérésekor ismételt szövettani mintavétel szakít meg. Negatív szövettani eredmény esetén a megkezdett terápia a teljes dózis eléréséig folytatandó. Amennyiben a reszekció során élő tumor észlelhető, a radikális műtét elvégzése javasolt. A korábban transurethralis daganatreszekción négyszer átesett 54 éves beteg lokális immunterápia utáni recidívájának szövettana pT1, 'high grade' urothelialis carcinoma volt. A jól informált, kiváló fizikális statusú beteg kérését figyelembe véve split-course trimodális kezelést végeztünk. Negatív 'staging' vizsgálatok után maximális endoszkópos reszekció, majd kemoirradiáció következett. A 45 Gy besugárzás elérésekor elvégzett ismételt mintavétel azonnal feldolgozott szövettana negatív eredményt mutatott, így késedelem nélkül folytatódott a kemoirradiációs kezelés. Az eddigi kontrollvizsgálatok alapján a beteg komplett remisszióban van. A split-course trimodális terápia a radikális hólyageltávolítás megfelelő alternatívája jól informált, gondosan megválogatott betegek esetében. A szervmegtartó eljárás jobb életminőséget eredményezhet, ugyanakkor a beteget feltétlenül tájékoztatni kell, hogy sikertelenség esetén a radikális műtét is szükségessé válhat. A kezelés sikeres menedzselése csak a társszakmák szoros, jól tervezett együttműködésével lehetséges. Orv Hetil. 2021; 162(50): 2017-2022. Summary. While radical cystectomy remains the gold standard to treat muscle-invasive or very high risk superficial bladder cancer, well selected patients can be offered split-course multimodal treatment as a similarly effective alternative, combining endoscopic tumor resection and split-course chemoradiotherapy. In highly selected patients, split-course trimodality therapy can lead to survival rates comparable to radical cystectomy with better quality of life outcomes. We present our experience with split-course trimodality treatment used for the very first time in Hungary. Maximal transurethral resection of bladder neoplasm is followed by chemoradiotherapy with repeated bladder biopsy after 45 Gy of irradiation. With negative biopsy results, chemoirradiation should be continued until full dose given. Salvage cystectomy is recommended if viable tumor is detected. Our patient (54), who previously underwent four transurethral bladder tumor resections and local immunotherapy, presented with pT1, high grade urothelial carcinoma recurrence. The well-informed, high performance status patient opted for split-course trimodality treatment. After negative staging scan results, the patient underwent complete endoscopic tumor eradication, followed by chemoradiotherapy. After 45 Gy of irradiation, repeated bladder biopsy was performed. The immediate histopathological examination found no viable tumor, therefore chemoradiotherapy was completed. Follow-up examinations suggest our patient in complete remission. Split-course trimodality treatment can be offered to well-informed and selected patients as a reasonable alternative to radical cystectomy. Though the bladder-sparing approach results in better quality of life, patients must know that in the case of treatment failure, radical cystectomy will likely be offered. Excellent multidisciplinary cooperation is a key to conduct this treatment alternative successfully. Orv Hetil. 2021; 162(50): 2017-2022.
    MeSH term(s) Carcinoma, Transitional Cell ; Cystectomy ; Humans ; Neoplasm Invasiveness ; Quality of Life ; Urinary Bladder Neoplasms/surgery
    Language Hungarian
    Publishing date 2021-12-12
    Publishing country Hungary
    Document type Journal Article
    ZDB-ID 123879-6
    ISSN 1788-6120 ; 0030-6002
    ISSN (online) 1788-6120
    ISSN 0030-6002
    DOI 10.1556/650.2021.32224
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  7. Article ; Online: Acute side effects after definitive stereotactic body radiation therapy (SBRT) for patients with clinically localized or locally advanced prostate cancer: a single institution prospective study.

    Jorgo, Kliton / Polgar, Csaba / Stelczer, Gabor / Major, Tibor / Gesztesi, Laszlo / Agoston, Peter

    Radiology and oncology

    2021  Volume 55, Issue 4, Page(s) 474–481

    Abstract: Background: The aim of the study was to evaluate acute side effects after extremely hypofractionated intensity-modulated radiotherapy (IMRT) with stereotactic body radiation therapy (SBRT) for definitive treatment of prostate cancer patients.: ... ...

    Abstract Background: The aim of the study was to evaluate acute side effects after extremely hypofractionated intensity-modulated radiotherapy (IMRT) with stereotactic body radiation therapy (SBRT) for definitive treatment of prostate cancer patients.
    Patients and methods: Between February 2018 and August 2019, 205 low-, intermediate- and high-risk prostate cancer patients were treated with SBRT using "CyberKnife M6" linear accelerator. In low-risk patients 7.5-8 Gy was delivered to the prostate gland by each fraction. For intermediate- and high-risk disease a dose of 7.5-8 Gy was delivered to the prostate and 6-6.5 Gy to the seminal vesicles by each fraction with a simultaneous integrated boost (SIB) technique. A total of 5 fractions (total dose 37.5-40 Gy) were given on every second working day. Acute radiotherapy-related genitourinary (GU) and gastrointestinal (GI) side effects were assessed using Radiation Therapy Oncology Group (RTOG) scoring system.
    Results: Of the 205 patients (28 low-, 115 intermediate-, 62 high-risk) treated with SBRT, 203 (99%) completed the radiotherapy as planned. The duration of radiation therapy was 1 week and 3 days. The frequencies of acute radiotherapy-related side effects were as follows: GU grade 0 - 17.1%, grade I - 30.7%, grade II - 50.7%, grade III - 1.5%; and GI grade 0 - 62.4%, grade I-31.7%, grade II-5.9%, grade III-0%. None of the patients developed grade ≥ 4 acute toxicity.
    Conclusions: SBRT with a total dose of 37.5-40 Gy in 5 fractions appears to be a safe and well tolerated treatment option in patients with prostate cancer, associated with slight or moderate early side effects. Longer follow-up is needed to evaluate long-term toxicity and biochemical control.
    MeSH term(s) Humans ; Male ; Prospective Studies ; Prostatic Neoplasms/pathology ; Prostatic Neoplasms/radiotherapy ; Radiosurgery/adverse effects
    Language English
    Publishing date 2021-07-13
    Publishing country Poland
    Document type Journal Article
    ZDB-ID 1128829-2
    ISSN 1581-3207 ; 0485-893X ; 1318-2099
    ISSN (online) 1581-3207
    ISSN 0485-893X ; 1318-2099
    DOI 10.2478/raon-2021-0031
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  8. Article: Comparative dosimetrical analysis of intensity-modulated arc therapy, CyberKnife therapy and image-guided interstitial HDR and LDR brachytherapy of low risk prostate cancer.

    Fröhlich, Georgina / Ágoston, Péter / Jorgo, Kliton / Stelczer, Gábor / Polgár, Csaba / Major, Tibor

    Reports of practical oncology and radiotherapy : journal of Greatpoland Cancer Center in Poznan and Polish Society of Radiation Oncology

    2021  Volume 26, Issue 2, Page(s) 196–202

    Abstract: Background: The objective of the study was to dosimetrically compare the intensity-modulated-arc-therapy (IMAT), Cyber-Knife therapy (CK), single fraction interstitial high-dose-rate (HDR) and low-dose-rate (LDR) brachytherapy (BT) in low-risk prostate ... ...

    Abstract Background: The objective of the study was to dosimetrically compare the intensity-modulated-arc-therapy (IMAT), Cyber-Knife therapy (CK), single fraction interstitial high-dose-rate (HDR) and low-dose-rate (LDR) brachytherapy (BT) in low-risk prostate cancer.
    Materials and methods: Treatment plans of ten patients treated with CK were selected and additional plans using IMAT, HDR and LDR BT were created on the same CT images. The prescribed dose was 2.5/70 Gy in IMAT, 8/40 Gy in CK, 21 Gy in HDR and 145 Gy in LDR BT to the prostate gland. EQD2 dose-volume parameters were calculated for each technique and compared.
    Results: EQD2 total dose of the prostate was significantly lower with IMAT and CK than with HDR and LDR BT, D90 was 79.5 Gy, 116.4 Gy, 169.2 Gy and 157.9 Gy (p < 0.001). However, teletherapy plans were more conformal than BT, COIN was 0.84, 0.82, 0.76 and 0.76 (p < 0.001), respectively. The D
    Conclusions: HDR monotherapy yields the most advantageous dosimetrical plans, except for the dose to the urethra, where IMAT seems to be the optimal modality in the radiotherapy of low-risk prostate cancer.
    Language English
    Publishing date 2021-04-14
    Publishing country Poland
    Document type Journal Article
    ZDB-ID 2188087-6
    ISSN 1507-1367
    ISSN 1507-1367
    DOI 10.5603/RPOR.a2021.0028
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  9. Article ; Online: Extracorporeal irradiation: biological reconstruction following tumor resection with a large bone defect

    Perlaky, Tamás / Kiss, János / Szalay, Krisztián / Maysam, Moghaddam Amin / Ágoston, Péter / Szendrői, Miklós

    Orvosi hetilap

    2020  Volume 161, Issue 45, Page(s) 1914–1919

    Title translation Extracorporalis irradiatio: nagy csontdefektussal járó tumorresectiót követő biológiai rekonstrukció.
    MeSH term(s) Adult ; Bone Neoplasms/radiotherapy ; Bone Neoplasms/surgery ; Bone Transplantation ; Child ; Child, Preschool ; Chondrosarcoma/radiotherapy ; Chondrosarcoma/surgery ; Humans ; Hungary ; Limb Salvage ; Neoplasm Recurrence, Local ; Treatment Outcome
    Language Hungarian
    Publishing date 2020-11-08
    Publishing country Hungary
    Document type Journal Article
    ZDB-ID 123879-6
    ISSN 1788-6120 ; 0030-6002
    ISSN (online) 1788-6120
    ISSN 0030-6002
    DOI 10.1556/650.2020.31767
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  10. Article ; Online: Patient positioning variations to reduce dose to normal tissues during 3D conformal radiotherapy for high-risk prostate cancer.

    Czigner, K / Agoston, P / Forgács, G / Kásler, M

    Strahlentherapie und Onkologie : Organ der Deutschen Rontgengesellschaft ... [et al

    2012  Volume 188, Issue 9, Page(s) 816–822

    Abstract: Background and purpose: The goal of this work was to assess optimal treatment positioning of 3D conformal radiotherapy (3DCRT) for high-risk prostate cancer patients.: Patients and methods: Treatment plans of 25 patients in different patient ... ...

    Abstract Background and purpose: The goal of this work was to assess optimal treatment positioning of 3D conformal radiotherapy (3DCRT) for high-risk prostate cancer patients.
    Patients and methods: Treatment plans of 25 patients in different patient positions were evaluated: with knee and ankle support (KAS) in the supine position and with a belly board (BB) in the prone position both with full (FB) and empty bladder (EB). Planning target volumes (PTVs) for pelvis, prostate and vesicles, prostate, and organs at risk (OARs) were delineated. Dose and overlapping volumes were evaluated.
    Results: Overlapping volumes were significantly smaller with a FB than with an EB. No significant differences were found in overlapping volumes with respect to patient fixation systems, but the percentage values of dose to the OARs showed significantly better results employing KAS than a BB. A FB reduced the dose volumes to the OARs. Comparison with respect to circumference of abdomen (CA) showed significantly smaller overlapping at large CA in most of the cases.
    Conclusion: Supine position is suggested with KAS combined with a FB (especially in cases of larger CA) when using 3DCRT with planning technique modification for high-risk prostate cancer patients to reduce the dose of OARs, based on our results.
    MeSH term(s) Aged ; Aged, 80 and over ; Female ; Humans ; Male ; Middle Aged ; Patient Positioning/methods ; Prostatic Neoplasms/radiotherapy ; Radiation Injuries/prevention & control ; Radiation Protection/methods ; Radiotherapy Dosage ; Radiotherapy Planning, Computer-Assisted/methods ; Radiotherapy, Conformal/adverse effects ; Radiotherapy, Conformal/methods ; Treatment Outcome
    Language English
    Publishing date 2012-05-23
    Publishing country Germany
    Document type Clinical Trial ; Journal Article
    ZDB-ID 84983-2
    ISSN 1439-099X ; 0179-7158 ; 0039-2073
    ISSN (online) 1439-099X
    ISSN 0179-7158 ; 0039-2073
    DOI 10.1007/s00066-012-0126-z
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