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Deviation of the upper, middle and lower thirds of the rectum during irradiation of rectum cancer

Klemen Salmic

Klemen Salmic

Institute of Oncology Ljubljana, Department of RadiotherapyLjubljana, Slovenia
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Salmic, Klemen
, 
Valerija Zager Marcius

Valerija Zager Marcius

  • Institute of Oncology Ljubljana, Department of RadiotherapyLjubljana, Slovenia
  • University of Ljubljana, Faculty of Health Sciences, Department of Medical Imaging and RadiotherapyLjubljana, Slovenia
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Marcius, Valerija Zager
 and 
Irena Oblak

Irena Oblak

  • Institute of Oncology Ljubljana, Department of RadiotherapyLjubljana, Slovenia
  • Faculty of Medicine, University of LjubljanaLjubljana, Slovenia
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Oblak, Irena
  
Jun 06, 2025
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Article Category: research article
Published Online: Jun 06, 2025
Page range: 277 - 284
Received: Apr 15, 2024
Accepted: Mar 08, 2025
DOI: https://doi.org/10.2478/raon-2025-0020
Keywords
© 2025 Klemen Salmic et al., published by Sciendo
This work is licensed under the Creative Commons Attribution 4.0 International License.

FIGURE 1.

Direction of measurements taken and example of measurements used in the study. The bold brown line is the reference position on CT image; the thin brown line is the daily position on cone-beam computed tomography (CBCT)
Direction of measurements taken and example of measurements used in the study. The bold brown line is the reference position on CT image; the thin brown line is the daily position on cone-beam computed tomography (CBCT)

FIGURE 2.

Rectal thirds when using a different alignment method.
Rectal thirds when using a different alignment method.

FIGURE 3.

Rectal thirds when using a method to align the bone structures – the sacrum compared to gender.
Rectal thirds when using a method to align the bone structures – the sacrum compared to gender.

FIGURE 4.

Rectal thirds when using a method to align the posterior rectal wall compared to gender.
Rectal thirds when using a method to align the posterior rectal wall compared to gender.

FIGURE 5.

Fluctuations in the daily and reference volume of the rectum and urinary bladder.
Fluctuations in the daily and reference volume of the rectum and urinary bladder.
Language:
English
Publication timeframe:
4 times per year
Journal Subjects:
Medicine, Clinical Medicine, Internal Medicine, Haematology, Oncology, Radiology
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