Precision Radiation Oncology, also known as the Blue Journal, presents an open access forum of collaboration and exchange for comprehensive and cutting-edge information on basic, translational, and clinical research in radiation oncology.

Precision Radiation Oncology is the first English Journal focusing on radiation oncology in China. It is officially endorsed by Chinese Society for Therapeutic Radiology and Oncology (CSTRO), Chinese Radiation Therapy Oncology Group (CRTOG), and the Radiation Oncology Physicians Brance of Chinese Medical Doctor Association.

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Articles

ORIGINAL ARTICLE
Open access

Feasibility study of a multi‐lesion cyberknife radiotherapy plan verification method using a 2D array with pre‐set roll angles

  •  28 June 2025

Graphical Abstract

Feasibility study of a multi-lesion cyberknife radiotherapy plan verification method using a 2D array with pre-set roll angles Issue ,

This study aims to solve the common problem in clinical practice of CyberknifeM6. In the verification of multi-lesion brain plans, when the 2D matrix is not set the roll Angle, only less than 1/3 of the cases can measure the dose of two targets.

The solution of using two-dimensional array and matching phantom design with relatively good resolution has better clinical applicability. In this study, a simplified model was designed to simplify the lesions with different location distribution, shape and size into a sphere, and calculate the roll angle required by the 2D array on the measurable limit distance. There are a large number of verification plans in this study, and the comparative analysis methods and conditions used are relatively perfect. The results obtained have high credibility.

Some specific suggestions for the improvement of the phantom for practical application are put forward.

ORIGINAL ARTICLE
Open access

Optimized fiducial marker placement using B‐spline surface modeling and graph theory for Cyberknife stereotactic body radiotherapy for superficial tumors

  •  87-95
  •  19 June 2025

Graphical Abstract

Optimized fiducial marker placement using B-spline surface modeling and graph theory for Cyberknife stereotactic body radiotherapy for superficial tumors Issue 2, 2025

This study introduces a Fiducial marker placement planning algorithm, specifically for superficial tumors that are located 20-50 mm beneath the epidermis. The algorithm proposes numerous potential implantation sites by constructing and optimizing a B-spline surface. The time complexity of the algorithm proposed in this study is O(mlogm+m2+3(n/3)), significantly faster than the brute-force O(n3) approach. Experimental outcomes show that our algorithm can efficiently plan Fiducial marker placements, simplifying the planning process and providing valuable technical support for CyberKnife treatments.

ORIGINAL ARTICLE
Open access

Dosimetric and hematological toxicity analyses of bone marrow‐sparing intensity‐modulated radiation therapy for patients with cervical cancer treated with extended‐field radiation therapy

  •  96-107
  •  12 June 2025

Graphical Abstract

Dosimetric and hematological toxicity analyses of bone marrow-sparing intensity-modulated radiation therapy for patients with cervical cancer treated with extended-field radiation therapy Issue 2, 2025

Bone Marrow Sparing Intensity Modulated Radiation Therapy is a feasible option for cervical cancer patients treated with extended-field radiation therapy, it may reduce hematologic toxicity and ensure the continuity of concurrent chemoradiotherapy.

ORIGINAL ARTICLE
Open access

Fast estimation of patient‐specific organ doses from abdomen and head CT examinations without segmenting internal organs using machine learning models

  •  77-86
  •  29 May 2025

Graphical Abstract

Fast estimation of patient-specific organ doses from abdomen and head CT examinations without segmenting internal organs using machine learning models Issue 2, 2025

A new method using support vector regression (SVR) models predicts organ doses from CT scans based on skin radiomics, eliminating the need for organ segmentation. High accuracy was achieved for brain, eyes, lens, bowel, kidneys, and liver doses, improving clinical efficiency and accessibility in dose prediction.

ORIGINAL ARTICLE
Open access

Deep learning‐based dose prediction for low‐energy electron beam superficial radiotherapy

  •  108-119
  •  26 May 2025

Graphical Abstract

Deep learning-based dose prediction for low-energy electron beam superficial radiotherapy Issue 2, 2025

This study integrates Monte Carlo (MC) simulations with a cascaded 3D-UNet (C3D) deep learning model to achieve rapid and accurate dose predictions for low-energy electron radiotherapy. Utilizing CT phantoms of six body sites, the model demonstrates high prediction accuracy with a Gamma pass rate exceeding 92% within 1%/1mm tolerance and a computational speed approximately 140,000 times faster than traditional MC simulations. This approach enhances the efficiency and precision of treatment planning, addressing the challenges of surface contour variations in superficial electron beam therapy.

REVIEW
Open access

Deep learning (DL)-based advancements in prostate cancer imaging: Artificial intelligence (AI)-based segmentation of 68Ga-PSMSA PET for tumor volume assessment

  •  120-132
  •  3 May 2025

Graphical Abstract

Deep learning (DL)-based advancements in prostate cancer imaging: Artificial intelligence (AI)-based segmentation of 68Ga-PSMSA PET for tumor volume assessment Issue 2, 2025

This review highlights the use of 68Ga-PSMA PET in prostate cancer (PC) for tumor volume quantification, crucial for staging, treatment planning, and prognosis. Traditional manual segmentation methods are time-consuming and variable, while AI-based segmentation techniques, particularly deep learning models like convolutional neural networks, offer automated, accurate, and efficient solutions. AI-based segmentation improves reproducibility and processing times, aiding personalized medicine. However, challenges such as standardized protocols, extensive validation, and clinical integration need addressing for its widespread adoption in 68Ga-PSMA PET for PC, enhancing patient care.

ORIGINAL ARTICLE
Open access

A safety study of ultra‐high dose rate FLASH radiotherapy in the treatment of superficial skin tumors: study protocol of a phase I trial (ChiCTR2400080935)

  •  72-76
  •  5 April 2025

Graphical Abstract

A safety study of ultra-high dose rate FLASH radiotherapy in the treatment of superficial skin tumors: study protocol of a phase I trial (ChiCTR2400080935) Issue 2, 2025

FLASH-RT has been shown to protect normal tissues, the clinical translation of FLASH-RT is ongoing.

We designed a phase I clinical trial to estimate the safety and healthy tissue spare by using a modified clinical linear accelerator

REVIEW
Open access

Application of high‐dose‐rate endorectal brachytherapy in the treatment of locally advanced rectal cancer

  •  133-142
  •  30 March 2025

Graphical Abstract

Application of high-dose-rate endorectal brachytherapy in the treatment of locally advanced rectal cancer Issue 2, 2025

This image compares the studies included in this article with the meta-analysis from the Cochrane Library, indicating that the incorporation of brachytherapy in neoadjuvant treatment for rectal cancer can achieve better pathological response rates. Additionally, the use of brachytherapy can reduce the local recurrence rate in patients. However, there are no significant differences in long-term survival and distant metastasis.

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