Abstract:
PURPOSE:Standard treatment plan libraries are often used to ensure a quick turn-around time for vaginal cylinder treatments. Recently there is increasing interest in transitioning from conventional 2D radiograph based brachytherapy to 3D image based brachytherapy, which has resulted in a substantial increase in treatment planning time and decrease in patient through-put. We describe a novel technique that significantly reduces the treatment planning time for CT-based vaginal cylinder brachytherapy. MATERIAL AND METHODS:Oncentra MasterPlan TPS allows multiple sets of data points to be classified as applicator points which has been harnessed in this method. The method relies on two hard anchor points: the first dwell position in a catheter and an applicator configuration specific dwell position as the plan origin and a soft anchor point beyond the last active dwell position to define the axis of the catheter. The spatial location of various data points on the applicator's surface and at 5 mm depth are stored in an Excel file that can easily be transferred into a patient CT data set using window operations and then used for treatment planning. The remainder of the treatment planning process remains unaffected. RESULTS:The treatment plans generated on the Oncentra MasterPlan TPS using this novel method yielded results comparable to those generated on the Plato TPS using a standard treatment plan library in terms of treatment times, dwell weights and dwell times for a given optimization method and normalization points. Less than 2% difference was noticed between the treatment times generated between both systems. Using the above method, the entire planning process, including CT importing, catheter reconstruction, multiple data point definition, optimization and dose prescription, can be completed in ~5-10 minutes. CONCLUSION:The proposed method allows a smooth and efficient transition to 3D CT based vaginal cylinder brachytherapy planning.
journal_name
J Contemp Brachytherapyjournal_title
Journal of contemporary brachytherapyauthors
Malhotra HK,Wu V,Wang Z,Patil Sdoi
10.5114/jcb.2012.29365subject
Has Abstractpub_date
2012-06-01 00:00:00pages
92-100issue
2eissn
1689-832Xissn
2081-2841pii
18874journal_volume
4pub_type
杂志文章abstract::Cervical cancer (CC) is a neoplasm with great potential for prevention, but it is still an important public health problem in most developing countries. No significant difference is found in the literature between intracavitary high-dose-rate (HDR) and low-dose-rate (LDR) brachytherapy, when considering overall, disea...
journal_title:Journal of contemporary brachytherapy
pub_type: 杂志文章,评审
doi:10.5114/jcb.2018.81027
更新日期:2018-12-01 00:00:00
abstract:Purpose:Inadequate procedural training is of increasing concern in resident training, especially in prostate brachytherapy (PB). Transperineal rectal spacer placement (TRSP) requires many of the same proficiencies as PB. This work describes the assessment of teaching techniques focusing on developing critical competenc...
journal_title:Journal of contemporary brachytherapy
pub_type: 杂志文章
doi:10.5114/jcb.2019.90984
更新日期:2019-12-01 00:00:00
abstract:Purpose:To quantify the reduction of relative displacement between the implanted intracavitary applicator and the patient bony anatomy, due to the use of a hover transport system during the patient transports between the imaging table and the treatment table. Material and methods:The displacement of the applicator ins...
journal_title:Journal of contemporary brachytherapy
pub_type: 杂志文章
doi:10.5114/jcb.2018.73755
更新日期:2018-02-01 00:00:00
abstract:PURPOSE:Adjuvant brachytherapy (AB) with immediate (IR) and staged reconstruction (SR) are distinct treatment modalities available for patients with recurrent soft tissue sarcoma (STS). Although SR may offer local control and toxicity benefit, it requires additional upfront procedures, and there is no evidence that it ...
journal_title:Journal of contemporary brachytherapy
pub_type: 杂志文章
doi:10.5114/jcb.2017.65641
更新日期:2017-02-01 00:00:00
abstract::Over the last twenty years major software and hardware developments in brachytherapy treatment planning, intraoperative navigation and dose delivery have been made. Image-guided brachytherapy has emerged as the ultimate conformal radiation therapy, allowing precise dose deposition on small volumes under direct image v...
journal_title:Journal of contemporary brachytherapy
pub_type: 杂志文章,评审
doi:10.5114/jcb.2010.16920
更新日期:2010-09-01 00:00:00
abstract:Purpose:To compare post-implant dosimetrics between intraoperatively built custom-linked (IBCL) seeds and loose seeds (LS) at 24 hours and 1 month by sector analysis, and to evaluate the effect of IBCL seeds with regard to change in dosimetric parameters, in patients with prostate cancer treated with brachytherapy. Ma...
journal_title:Journal of contemporary brachytherapy
pub_type: 杂志文章
doi:10.5114/jcb.2020.98110
更新日期:2020-08-01 00:00:00
abstract::In order to improve oncologic outcomes in radiotherapy treatments of patients with unresectable pelvic sidewall recurrences of uterine cervical cancer, we combined high-dose-rate interstitial brachytherapy (HDR-ISBT) with newly tested hypoxic radiosensitizer Kochi oxydol-radiation therapy for unresectable carcinomas (...
journal_title:Journal of contemporary brachytherapy
pub_type:
doi:10.5114/jcb.2020.101695
更新日期:2020-12-01 00:00:00
abstract:PURPOSE:Three-dimensional (3D) printing technology allows physicians to rapidly create customized devices for patients. We report our initial clinical experience using this technology to create custom applicators for vaginal brachytherapy. MATERIAL AND METHODS:Three brachytherapy patients with unique clinical needs we...
journal_title:Journal of contemporary brachytherapy
pub_type: 杂志文章
doi:10.5114/jcb.2016.60679
更新日期:2016-06-01 00:00:00
abstract:PURPOSE:Radiotherapy for breast cancer includes different techniques and methods. The purpose of this study is to compare dosimetric calculations using TG-43 dose formalism and Varian Acuros™ BV (GBBS) dose calculation algorithm for interstitial implant of breast using metal catheters in high-dose-rate (HDR) brachyther...
journal_title:Journal of contemporary brachytherapy
pub_type: 杂志文章
doi:10.5114/jcb.2015.54052
更新日期:2015-08-01 00:00:00
abstract::The aim of this study is to report an uncommon case of nasal keloid treated with adaptive image-guided high-dose-rate (HDR) intracavitary brachytherapy. A 34-year-old female presented with nasal keloid after facial trauma was treated with scar resection and HDR intracavitary brachytherapy with a customized eccentric a...
journal_title:Journal of contemporary brachytherapy
pub_type:
doi:10.5114/jcb.2018.76838
更新日期:2018-06-01 00:00:00
abstract:PURPOSE:To report the treatment effect of interstitial brachytherapy for abdominal wall metastases of ovarian cancer. MATERIAL AND METHODS:The patient is a 44-year-old female with a diagnosis of stage IA ovarian cancer. After surgery and two cycles of chemotherapy with paclitaxel and carboplatin, the patient noticed d...
journal_title:Journal of contemporary brachytherapy
pub_type:
doi:10.5114/jcb.2015.48574
更新日期:2015-02-01 00:00:00
abstract::High-dose-rate endorectal brachytherapy (HDREBT) is an image guided brachytherapy treatment for patients with rectal cancer. It is based on tumor imaging with magnetic resonance in particular, which is used to choose eligible patients and improve tumor visualization. Treatment planning is performed using 3D CT simulat...
journal_title:Journal of contemporary brachytherapy
pub_type: 杂志文章,评审
doi:10.5114/jcb.2015.51402
更新日期:2015-04-01 00:00:00
abstract:Purpose:To report the results of INTERACTS (INTErventional Radiotherapy ACtive Teaching School) consensus conference on sarcoma interventional radiotherapy (brachytherapy). Material and methods:An international board of multidisciplinary experts was invited to a consensus conference on the state-of-the-art of sarcoma ...
journal_title:Journal of contemporary brachytherapy
pub_type: 杂志文章,评审
doi:10.5114/jcb.2020.98120
更新日期:2020-08-01 00:00:00
abstract:Purpose:To evaluate clinical outcomes in patients with localized prostate cancer (LPC) treated with 3D conformal high-dose-rate (HDR) brachytherapy (BT) as monotherapy. Material and methods:From March 2004 to November 2017, 277 men with LPC underwent 3D conformal HDR-BT as monotherapy, with a temporary implant. The do...
journal_title:Journal of contemporary brachytherapy
pub_type: 杂志文章
doi:10.5114/jcb.2020.101685
更新日期:2020-12-01 00:00:00
abstract:Purpose:Skin cancers are the most common human malignancy with increasing incidence. Currently, surgery is standard of care treatment for non-melanoma skin cancers. However, brachytherapy is a growing modality in the management of skin cancers. Therefore, we aimed to assess the outcome of patients with non-melanoma ski...
journal_title:Journal of contemporary brachytherapy
pub_type: 杂志文章
doi:10.5114/jcb.2018.75596
更新日期:2018-04-01 00:00:00
abstract:Purpose:Soft tissue sarcoma (STS) is rare but aggressive neoplasm. Interstitial brachytherapy (ISBT) alone or combined with external beam radiotherapy (EBRT) as post-operative treatment improves loco-regional (LRC) and distant control. Material and methods:Out of twenty-nine non-metastatic STS (lower limb 64%) patient...
journal_title:Journal of contemporary brachytherapy
pub_type: 杂志文章
doi:10.5114/jcb.2018.78994
更新日期:2018-10-01 00:00:00
abstract:PURPOSE:While there are several reports of prostate multisector dosimetry data obtained from CT or MRI scans performed at intervals ranging from 14-70 days after prostate brachytherapy (PB), there are no reports on multisector dosimetry performed in the immediate post-implant period. This study was undertaken to determ...
journal_title:Journal of contemporary brachytherapy
pub_type: 杂志文章
doi:10.5114/jcb.2014.42023
更新日期:2014-03-01 00:00:00
abstract:PURPOSE:The purpose of this study is to obtain the dosimetric parameters of the new BEBIG (60)Co brachytherapy source following by TG-43U1 recommendation with appropriate electron cutoff energy (0.521 MeV). MATERIAL AND METHODS:The new BEBIG (60)Co brachytherapy source is used to calculate the TG-43U1 parameters. EGSn...
journal_title:Journal of contemporary brachytherapy
pub_type: 杂志文章
doi:10.5114/jcb.2013.37419
更新日期:2013-09-01 00:00:00
abstract:Purpose:To verify the accuracy and efficacy of three-dimensional printing individual template (3D-PIT) with computed tomography-magnetic resonance imaging (CT-MRI) fusion for radioactive iodine-125 (125I) seed implantation in high-grade brain gliomas. Material and methods:Between June 2017 and June 2018, 16 patients w...
journal_title:Journal of contemporary brachytherapy
pub_type: 杂志文章
doi:10.5114/jcb.2019.85729
更新日期:2019-06-01 00:00:00
abstract:Purpose:Cervical cancer is the most common gynecological cancer in India. Uniform protocol-based treatment is important for achieving optimal outcomes. We undertook a survey to investigate patterns of care with special regard to patterns of care in cervical cancer brachytherapy in India. Material and methods:A 17-ques...
journal_title:Journal of contemporary brachytherapy
pub_type: 杂志文章
doi:10.5114/jcb.2019.90448
更新日期:2019-12-01 00:00:00
abstract:Purpose:The aim of this study was to propose an index for evaluating dosimetric impact of inter-observer target delineation variability in brachytherapy. Material and methods:The coverage with dosimetric concordance index (CDCI) is expressed as CDCIcommon and CDCIpair. The CDCIcommon is the mean coverage of target vol...
journal_title:Journal of contemporary brachytherapy
pub_type: 杂志文章
doi:10.5114/jcb.2020.94309
更新日期:2020-04-01 00:00:00
abstract:PURPOSE:In the study we present the initial results of palliative treatment using combined methods of HDR-BT and stent insertion in patients with advanced esophagus cancer. MATERIAL AND METHODS:Fifty patients were treated in the Great Poland Cancer Center using HDR-BT between June 2001 and December 2005 and they were ...
journal_title:Journal of contemporary brachytherapy
pub_type: 杂志文章
doi:
更新日期:2009-03-01 00:00:00
abstract:PURPOSE:The common use of nomograms in Low Dose Rate (LDR) permanent prostate brachytherapy (BT) allows to estimate the number of seeds required for an implant. Independent dosimetry verification is recommended for each clinical dosimetry in BT. Also, nomograms can be useful for dose calculation quality assurance and t...
journal_title:Journal of contemporary brachytherapy
pub_type: 杂志文章
doi:10.5114/jcb.2011.24817
更新日期:2011-09-01 00:00:00
abstract:PURPOSE:The standard primary treatment for soft tissue sarcoma (STS) is a wide surgical resection, preceded or followed by radiotherapy. Purpose of this retrospective study was to assess the efficacy of perioperative brachytherapy (BRT) plus postoperative external beam radiation therapy (EBRT) in patients with intermed...
journal_title:Journal of contemporary brachytherapy
pub_type: 杂志文章
doi:10.5114/jcb.2017.68215
更新日期:2017-06-01 00:00:00
abstract:PURPOSE:The aim of this work was to determine dose distributions for high-energy brachytherapy sources at spatial locations not included in the radial dose function gL(r) and 2D anisotropy function F(r,θ) table entries for radial distance r and polar angle θ. The objectives of this study are as follows: 1) to evaluate ...
journal_title:Journal of contemporary brachytherapy
pub_type: 杂志文章
doi:10.5114/jcb.2010.13715
更新日期:2010-03-01 00:00:00
abstract:Purpose:Graphical optimization (GO) and inverse planning simulated annealing (IPSA) are the main treatment planning optimization techniques used in patients undergoing 3D brachytherapy treatment. This study aims to compare the dosimetric difference of plans optimized by GO and IPSA in cervical cancer brachytherapy. Ma...
journal_title:Journal of contemporary brachytherapy
pub_type: 杂志文章
doi:10.5114/jcb.2019.87145
更新日期:2019-08-01 00:00:00
abstract:PURPOSE:Low energy sources are routinely used in prostate brachytherapy. (125)I is one of the most commonly used sources. Low energy (131)Cs source was introduced recently as a brachytherapy source. The aim of this study is to compare dose distributions of (125)I, (103)Pd, and (131)Cs sources in interstitial brachyther...
journal_title:Journal of contemporary brachytherapy
pub_type: 杂志文章
doi:10.5114/jcb.2016.57708
更新日期:2016-02-01 00:00:00
abstract:PURPOSE:During intracavitary brachytherapy (ICBT) for cervical cancer, the choice of applicator system remains rather arbitrary. However, as the applicator geometry may play an important role in dose distribution, thereby improving the therapeutic ratio, this study was conducted to compare the Manchester-style and Flet...
journal_title:Journal of contemporary brachytherapy
pub_type: 杂志文章
doi:10.5114/jcb.2012.32555
更新日期:2012-12-01 00:00:00
abstract:Purpose:To compare the cervical cancer treatment outcome and toxicities between two different institutions. Material and methods:We analysed the clinical outcome of cervical cancer patients treated at two different centres from January 2015 to December 2016. Centre A treated 72 patients by external beam radiotherapy (...
journal_title:Journal of contemporary brachytherapy
pub_type: 杂志文章
doi:10.5114/jcb.2019.88582
更新日期:2019-10-01 00:00:00
abstract:PURPOSE:To evaluate whether Co-60 is equivalent to Ir-192 for HDR cervical brachytherapy, through 3D-DVH dose comparisons in standard and optimised plans. Previous studies have only considered 2D dosimetry, point dose comparisons or identical loading. Typical treatment times and economics are considered. MATERIAL AND ...
journal_title:Journal of contemporary brachytherapy
pub_type: 杂志文章
doi:10.5114/jcb.2012.27952
更新日期:2012-03-01 00:00:00