Towards Personalization of Planning Target Volume Margins Fitted to the Abdominal Adiposity in Localized Prostate Cancer Patients Receiving Definitive or Adjuvant/Salvage Radiotherapy : Suggestive Data from an ExacTrac vs. CBCT Comparison
Copyright © 2023 International Institute of Anticancer Research (Dr. George J. Delinasios), All rights reserved..
BACKGROUND/AIM: This study aimed to assess whether the patient's abdominal adiposity affects the performance of the Exactrac imaging system compared to the cone beam computed tomography (CBCT)-based setup, which was used as the reference positioning for the image-guided radiotherapy (IGRT) delivery to patients with localized prostate cancer.
PATIENTS AND METHODS: The daily positionings of patients with localized prostate cancer undergoing definitive or adjuvant/salvage radiotherapy (RT) were analyzed. The abdominal fat areas and pelvic incidence angle were determined on the CT simulation for each patient. A couple of ExacTrac images and a CBCT were acquired daily to verify the patient setup. We recorded every daily set of the three residual translational errors detected on the CBCT after the ExacTrac-based setup. These sets were clustered within three different thresholds (0.1 mm, 0.2 mm, and 0.3 mm), for each of which the influence of adipose tissues on Exactrac accuracy was assessed as the percentage of sub-threshold displacements as the fat parameters varied. A full bladder and empty rectum preparation protocol was adopted as much as possible.
RESULTS: From the assessment of 1,770 daily positionings in 55 patients (38 definitive RT, 17 adjuvant/salvage RT), a good agreement between ExacTrac and CBCT could be inferred, which was quite robust against slight variations in the bladder and rectal filling, and the presence or not of the prostate. The percentages of above-threshold corrections increased with increasing abdominal fat, which therefore seemed to reduce the ExacTrac accuracy. This might be influenced by any intrafraction prostate displacement, likely induced by abdominal respiratory movements, and are more pronounced among overweight men.
CONCLUSION: Our results promote the CBCT use over ExacTrac for IGRT of overweight patients with localized prostate cancer, while calling for attention to the probable need for personalization of planning target volume margins depending on the patient's body habitus.
| Medienart: |
E-Artikel |
|---|
| Erscheinungsjahr: |
2023 |
|---|---|
| Erschienen: |
2023 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:43 |
|---|---|
| Enthalten in: |
Anticancer research - 43(2023), 9 vom: 30. Sept., Seite 4077-4088 |
| Sprache: |
Englisch |
|---|
| Beteiligte Personen: |
Ferini, Gianluca [VerfasserIn] |
|---|
| Links: |
|---|
| Themen: |
Cone beam computed tomography |
|---|
| Anmerkungen: |
Date Completed 01.09.2023 Date Revised 01.09.2023 published: Print Citation Status MEDLINE |
|---|
| doi: |
10.21873/anticanres.16597 |
|---|
| funding: |
|
|---|---|
| Förderinstitution / Projekttitel: |
|
| PPN (Katalog-ID): |
NLM36146181X |
|---|
| LEADER | 01000naa a22002652 4500 | ||
|---|---|---|---|
| 001 | NLM36146181X | ||
| 003 | DE-627 | ||
| 005 | 20231226085204.0 | ||
| 007 | cr uuu---uuuuu | ||
| 008 | 231226s2023 xx |||||o 00| ||eng c | ||
| 024 | 7 | |a 10.21873/anticanres.16597 |2 doi | |
| 028 | 5 | 2 | |a pubmed24n1204.xml |
| 035 | |a (DE-627)NLM36146181X | ||
| 035 | |a (NLM)37648318 | ||
| 040 | |a DE-627 |b ger |c DE-627 |e rakwb | ||
| 041 | |a eng | ||
| 100 | 1 | |a Ferini, Gianluca |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Towards Personalization of Planning Target Volume Margins Fitted to the Abdominal Adiposity in Localized Prostate Cancer Patients Receiving Definitive or Adjuvant/Salvage Radiotherapy |b Suggestive Data from an ExacTrac vs. CBCT Comparison |
| 264 | 1 | |c 2023 | |
| 336 | |a Text |b txt |2 rdacontent | ||
| 337 | |a ƒaComputermedien |b c |2 rdamedia | ||
| 338 | |a ƒa Online-Ressource |b cr |2 rdacarrier | ||
| 500 | |a Date Completed 01.09.2023 | ||
| 500 | |a Date Revised 01.09.2023 | ||
| 500 | |a published: Print | ||
| 500 | |a Citation Status MEDLINE | ||
| 520 | |a Copyright © 2023 International Institute of Anticancer Research (Dr. George J. Delinasios), All rights reserved. | ||
| 520 | |a BACKGROUND/AIM: This study aimed to assess whether the patient's abdominal adiposity affects the performance of the Exactrac imaging system compared to the cone beam computed tomography (CBCT)-based setup, which was used as the reference positioning for the image-guided radiotherapy (IGRT) delivery to patients with localized prostate cancer | ||
| 520 | |a PATIENTS AND METHODS: The daily positionings of patients with localized prostate cancer undergoing definitive or adjuvant/salvage radiotherapy (RT) were analyzed. The abdominal fat areas and pelvic incidence angle were determined on the CT simulation for each patient. A couple of ExacTrac images and a CBCT were acquired daily to verify the patient setup. We recorded every daily set of the three residual translational errors detected on the CBCT after the ExacTrac-based setup. These sets were clustered within three different thresholds (0.1 mm, 0.2 mm, and 0.3 mm), for each of which the influence of adipose tissues on Exactrac accuracy was assessed as the percentage of sub-threshold displacements as the fat parameters varied. A full bladder and empty rectum preparation protocol was adopted as much as possible | ||
| 520 | |a RESULTS: From the assessment of 1,770 daily positionings in 55 patients (38 definitive RT, 17 adjuvant/salvage RT), a good agreement between ExacTrac and CBCT could be inferred, which was quite robust against slight variations in the bladder and rectal filling, and the presence or not of the prostate. The percentages of above-threshold corrections increased with increasing abdominal fat, which therefore seemed to reduce the ExacTrac accuracy. This might be influenced by any intrafraction prostate displacement, likely induced by abdominal respiratory movements, and are more pronounced among overweight men | ||
| 520 | |a CONCLUSION: Our results promote the CBCT use over ExacTrac for IGRT of overweight patients with localized prostate cancer, while calling for attention to the probable need for personalization of planning target volume margins depending on the patient's body habitus | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a ExacTrac | |
| 650 | 4 | |a Image-guided radiotherapy | |
| 650 | 4 | |a cone beam computed tomography | |
| 650 | 4 | |a fat tissues | |
| 650 | 4 | |a personalized radiation therapy | |
| 650 | 4 | |a prostate cancer | |
| 700 | 1 | |a Zagardo, Valentina |e verfasserin |4 aut | |
| 700 | 1 | |a Valenti, Vito |e verfasserin |4 aut | |
| 700 | 1 | |a Aiello, Dario |e verfasserin |4 aut | |
| 700 | 1 | |a Federico, Manuela |e verfasserin |4 aut | |
| 700 | 1 | |a Fazio, Ivan |e verfasserin |4 aut | |
| 700 | 1 | |a Harikar, Mandara Muralidhar |e verfasserin |4 aut | |
| 700 | 1 | |a Marchese, Valentina Anna |e verfasserin |4 aut | |
| 700 | 1 | |a Illari, Salvatore Ivan |e verfasserin |4 aut | |
| 700 | 1 | |a Viola, Anna |e verfasserin |4 aut | |
| 700 | 1 | |a Martorana, Emanuele |e verfasserin |4 aut | |
| 773 | 0 | 8 | |i Enthalten in |t Anticancer research |d 1987 |g 43(2023), 9 vom: 30. Sept., Seite 4077-4088 |w (DE-627)NLM012601454 |x 1791-7530 |7 nnns |
| 773 | 1 | 8 | |g volume:43 |g year:2023 |g number:9 |g day:30 |g month:09 |g pages:4077-4088 |
| 856 | 4 | 0 | |u http://dx.doi.org/10.21873/anticanres.16597 |3 Volltext |
| 912 | |a GBV_USEFLAG_A | ||
| 912 | |a GBV_NLM | ||
| 951 | |a AR | ||
| 952 | |d 43 |j 2023 |e 9 |b 30 |c 09 |h 4077-4088 | ||