• Issue

    Precision Radiation Oncology: Volume 9, Issue 1

    1-68
    March 2025

ISSUE INFORMATION

Open Access

Issue Information

  • Pages: 1-3
  • First Published: 29 March 2025

CONSENSUS

Open Access

Consensus statement on the exploration of clinical translation and application of electron ultra-high dose rate FLASH radiotherapy

  • Pages: 4-12
  • First Published: 03 March 2025
Consensus statement on the exploration of clinical translation and application of electron ultra-high dose rate FLASH radiotherapy

• FLASH-RT as a novel irradiation technique shows a protective effect on normal tissues while maintaining comparable tumor killing effect as CONV-RT, also known as the FLASH effect.

• We develop a consensus statement on the exploration of clinical translation of FLASH-RT, and provide insights for the further application of this technology in clinical practice.

ORIGINAL ARTICLE

Open Access

Deep learning with attention modules and residual transformations improves hepatocellular carcinoma (HCC) differentiation using multiphase CT

  • Pages: 13-22
  • First Published: 22 March 2025
Deep learning with attention modules and residual transformations improves hepatocellular carcinoma (HCC) differentiation using multiphase CT

The proposed deep learning model with attentions and residual transformations (Top Figure (d) 3D GAN+AG ResNeXt) is applied to multi-phase CTs for HCC differentiation (Bottom Left). ROC curves (Bottom Right) showed the 3D deep GAN model with attentions and residual transformations (RED) had better performance.

Open Access

Measurements of Small Field Output Correction Factors on a RefleXion Treatment Machine

  • Pages: 35-42
  • First Published: 17 March 2025
Measurements of Small Field Output Correction Factors on a RefleXion Treatment Machine

The small field output correction factors of six different detectors were determined for a clinical RefleXion system. Figure 1: Raw data of reference output factors (blue squares) with film dosimetry in the field sizes of 2 cm jaw and corresponding fitted curve (red). Raw data of detector output ratios of Edge (purple dots), Razor (green triangles) and Micro-Diamond (yellow diamonds) detectors and corresponding fitted curves are in 1.a; raw data of detector output ratios of A14SL (gray-purple stars), CC01 (brown crosses) and CC13 (green downwards triangles) data and their fitted curves are in 1.b. Figure 2: Same as Figure 1, but in the fields of 1 cm jaw. Figure 3: Output correction factors of the six detectors in the fields of 2 cm jaw (3.a) and 1 cm jaw (3.b).

Open Access

Multi-sequence MRI-based clinical-radiomics models for the preoperative prediction of microsatellite instability-high status in endometrial cancer

  • Pages: 43-53
  • First Published: 03 March 2025
Multi-sequence MRI-based clinical-radiomics models for the preoperative prediction of microsatellite instability-high status in endometrial cancer

Results: Four clinical factors (progesterone receptor, tumor suppressor gene P53, diabetes, carbohydrate antigen 153) and 15 radiomic features (4 extracted from T1-weighted images, 6 from T2-weighted images, and 5 from apparent diffusion coefficient images) were identified as key predictors of microsatellite instability status in endometrial cancer.

Conclusion: This nomogram may aid in identifying endometrial cancer patients who may benefit from immunotherapy.

Open Access

Hypofractionated radiotherapy (RT) combined with dihydroartemisinin (DHA): No synergistic effect observed in a preliminary animal study

  • Pages: 54-60
  • First Published: 03 March 2025
Hypofractionated radiotherapy (RT) combined with dihydroartemisinin (DHA): No synergistic effect observed in a preliminary animal study

Subcutaneous xenografts were formed after colorectal cancer cells CT26 inoculation in nude mice, followed by a preliminary animal study in four groups: (1) control; (2) dihydroartemisinin (DHA), a potential natural anticancer drug; (3) radiotherapy (RT); (4) DHA+RT (n = 6 per group). Results showed no significant tumor volume reduction in the concurrent DHA+RT group in comparison to the RT alone group. No synergistic effect was observed in adding DHA to RT for the proposed SBRT dose regimen. Tumor progression inhibition was observed in the RT and DHA+RT groups, but was not obvious in the DHA group.

REVIEW

Open Access

The evolution of prophylactic neck irradiation in nasopharyngeal carcinoma: Changing concepts and irradiation ranges

  • Pages: 61-68
  • First Published: 20 March 2025
The evolution of prophylactic neck irradiation in nasopharyngeal carcinoma: Changing concepts and irradiation ranges

This paper summarizes the evolving developments of prophylactic neck irradiation for NPC and provides important insights and key evidence from historical, current, and recent studies.