Fiducial markers in prostate cancer image-guided radiotherapy

Ghaffari, Hamed; Navaser, Mahmoud; Mofid, Bahram; Mahdavi, Seied Rabi; Mohammadi, Reza; Tavakol, Asieh

doi:10.47176/mjiri.33.15

Cited by 4 publications

(4 citation statements)

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“…Finally, we compared different techniques’ registration accuracy ( 24 , 26 , 47 , 48 ), as shown in Table 3 . In general, the registration accuracy and stability of S-M_OPS were much better than those of the Sentinel system, Catalyst system, and surgical clips, and S-M_OPS could provide comparable positioning accuracy to a gold fiducial.…”

Section: Discussionmentioning

confidence: 99%

Improving the registration stability of cone-beam computed tomography with the Sphere-Mask Optical Positioning System: a feasibility study

Zhang¹,

Han²,

Jiang³

et al. 2023

Quant Imaging Med Surg

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Background: Cone-beam computed tomography (CBCT) is an important tool for patient positioning in radiotherapy due to its outstanding advantages. However, the CBCT registration shows errors due to the limitations of the automatic registration algorithm and the nonuniqueness of manual verification results. The purpose of this study was to verify the feasibility of using the Sphere-Mask Optical Positioning System (S-M_ OPS) to improve the registration stability of CBCT through clinical trials.Methods: From November 2021 to February 2022, 28 patients who received intensity-modulated radiotherapy and site verification with CBCT were included in this study. S-M_OPS was used as an independent third-party system to supervise the CBCT registration result in real time. The supervision error was calculated based on the CBCT registration result and using the S-M_OPS registration result as the standard. For the head and neck, patients with a supervision error ≥3 or ≤-3 mm in 1 direction were selected.For the thorax, abdomen, pelvis, or other body parts, patients with a supervision error ≥5 or ≤-5 mm in 1 direction were selected. Then, re-registration was performed for all patients (selected and unselected).The registration errors of CBCT and S-M_OPS were calculated based on the re-registration results as the standard.Results: For selected patients with large supervision errors, CBCT registration errors (mean ± standard deviation) in the latitudinal (LAT; left/right), vertical (VRT; superior/inferior), and longitudinal (LNG; anterior/posterior) directions were 0.90±3.20, -1.70±0.98, and 7.30±2.14 mm, respectively. The S-M_OPS registration errors were 0.40±0.14, 0.32±0.66, and 0.24±1.12 mm in the LAT, VRT, and LNG directions, respectively. For all patients, CBCT registration errors in the LAT, VRT, and LNG directions were 0.39±2.69, -0.82±1.47, and 2.39±2.93 mm, respectively. The S-M_OPS registration errors were -0.25±1.33, 0.55±1.27, and 0.36±1.34 mm for all patients in the LAT, VRT, and LNG directions, respectively. ^ ORCID: 0000-0003-2102-1823. Conclusions:This study shows that S-M_OPS registration offers comparable accuracy to CBCT for daily registration. S-M_OPS, as an independent third-party tool, can prevent large errors in CBCT registration, thereby improving the accuracy and stability of CBCT registration.

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Section: Discussionmentioning

confidence: 99%

Improving the registration stability of cone-beam computed tomography with the Sphere-Mask Optical Positioning System: a feasibility study

Zhang¹,

Han²,

Jiang³

et al. 2023

Quant Imaging Med Surg

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“…golden or polymer markers) fiducial markers into the prostate can be a proxy of the prostate. 79 Theoretically, the use of natural radiopaque surrogate of the relative prostate gland position, as prostate calculi could be used for the same purpose. O'Neill et al 80 in a retrospective series of 254 patients, evaluated 389 scan sets by TRUS, planning CT and CBCT scans from radical prostate radiotherapy patients (who underwent either EBRT or IRT).…”

Section: The Most Intriguing Inter-and Intra-fractional Treatment Aids For Modern Gating Of the Image-guided Radiotherapy: Fiducial Markementioning

confidence: 99%

Radiation therapy for prostate cancer: What’s the best in 2021

et al. 2021

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Radiotherapy is highly involved in the management of prostate cancer. Its features and potential applications experienced a radical evolution over last decades, as they are associated to the continuous evolution of available technology and current oncological innovations. Some application of radiotherapy like brachytherapy have been recently enriched by innovative features and multidisciplinary dedications. In this report we aim to put some questions regarding the following issues regarding multiple aspects of modern application of radiation oncology: the current application of radiation oncology; the modern role of stereotactic body radiotherapy (SBRT) for both the management of primary lesions and for lymph-nodal recurrence; the management of the oligometastatic presentations; the role of brachytherapy; the aid played by the application of the organ at risk spacer (spacer OAR), fiducial markers, electromagnetic tracking systems and on-line Magnetic Resonance guided radiotherapy (MRgRT), and the role of the new opportunity represented by radiomic analysis.

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“…In the past decades, new radiotherapy technologies such as Intensity Modulated Radiation Therapy (IMRT), Image Guided Radiation Therapy (IGRT), Stereotactic Radiosurgery (SRS), Stereotactic Body Radiation Therapy (SBRT), and three dimensional treatment planning in Brachytherapy have been introduced. Such advances in radiotherapy have led to an increment in the absorbed dose in the tumor area and a decrement in the received dose by healthy tissues in the treatment area [3][4][5]. Therefore, it is very important to carefully implement the treatment design.…”

Section: Introductionmentioning

confidence: 99%

Applications of Three-Dimensional Printing Technology in Radiotherapy

Moghaddam¹

2023

Advances in 3D Printing

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Nowadays, three-dimensional (3D) printing technology has been used for rapid prototyping of high quality printed objects. This technology has taken a special place in the field of medicine, and today this technology plays an important role, especially in the field of radiotherapy. Radiotherapy is a main option for treating and management of various types of cancers. Personalized radiotherapy requires precise details. For this reason, it is very important to carry out the exact treatment design at the clinical. 3D printing technology is considered a promising method that can be effective in the treatment of each person in a specific way and as a complementary and promising method to help in integrated treatment and special equipment for each patient. In this chapter, various applications of this technology in radiation therapy have been discussed. This narrative review summarizes the applications of 3D printing technology to develop patient-specific bolus, brachytherapy applicators, phantoms, filters, immobilization and grid therapy devices for more personalized radiation treatment.

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Fiducial markers in prostate cancer image-guided radiotherapy

Abstract: Background technologies w for electronic p quantifying int Methods: In the prostate gl complication a captured, and p expansions wer Results: FMs mm and 5.5 m clinical target v directions were Conclusion:

Cited by 4 publications

References 0 publications

Improving the registration stability of cone-beam computed tomography with the Sphere-Mask Optical Positioning System: a feasibility study

Improving the registration stability of cone-beam computed tomography with the Sphere-Mask Optical Positioning System: a feasibility study

Radiation therapy for prostate cancer: What’s the best in 2021

Applications of Three-Dimensional Printing Technology in Radiotherapy

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