Impact of neoadjuvant androgen deprivation therapy on magnetic resonance imaging features in prostate cancer before radiotherapy
Background and purpose: In locally advanced prostate cancer (PC), androgen deprivation therapy (ADT) in combination with whole prostate radiotherapy (RT) is the standard treatment. ADT affects the prostate as well as the tumour on multiparametric magnetic resonance imaging (MRI) with decreased PC co...
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doaj-f77e9aa956b84029bb3ec550862443fe2021-03-19T07:27:15ZengElsevierPhysics and Imaging in Radiation Oncology2405-63162021-01-0117117123Impact of neoadjuvant androgen deprivation therapy on magnetic resonance imaging features in prostate cancer before radiotherapyUlrika Björeland0Tufve Nyholm1Joakim Jonsson2Mikael Skorpil3Lennart Blomqvist4Sara Strandberg5Katrine Riklund6Lars Beckman7Camilla Thellenberg-Karlsson8Department of Radiation Sciences, Umeå University, Umeå, Sweden; Corresponding author at: Department of Medical Physics, Sundsvall Hospital, 85186 Sundsvall, Sweden.Department of Radiation Sciences, Umeå University, Umeå, SwedenDepartment of Radiation Sciences, Umeå University, Umeå, SwedenDepartment of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, SwedenDepartment of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, SwedenDepartment of Radiation Sciences, Umeå University, Umeå, SwedenDepartment of Radiation Sciences, Umeå University, Umeå, SwedenDepartment of Radiation Sciences, Umeå University, Umeå, SwedenDepartment of Radiation Sciences, Umeå University, Umeå, SwedenBackground and purpose: In locally advanced prostate cancer (PC), androgen deprivation therapy (ADT) in combination with whole prostate radiotherapy (RT) is the standard treatment. ADT affects the prostate as well as the tumour on multiparametric magnetic resonance imaging (MRI) with decreased PC conspicuity and impaired localisation of the prostate lesion. Image texture analysis has been suggested to be of aid in separating tumour from normal tissue. The aim of the study was to investigate the impact of ADT on baseline defined MRI features in prostate cancer with the goal to investigate if it might be of use in radiotherapy planning. Materials and methods: Fifty PC patients were included. Multiparametric MRI was performed before, and three months after ADT. At baseline, a tumour volume was delineated on apparent diffusion coefficient (ADC) maps with suspected tumour content and a reference volume in normal prostatic tissue. These volumes were transferred to MRIs after ADT and were analysed with first-order -and invariant Haralick -features. Results: At baseline, the median value and several of the invariant Haralick features of ADC, showed a significant difference between tumour and reference volumes. After ADT, only ADC median value could significantly differentiate the two volumes. Conclusions: Invariant Haralick -features could not distinguish between baseline MRI defined PC and normal tissue after ADT. First-order median value remained significantly different in tumour and reference volumes after ADT, but the difference was less pronounced than before ADT.http://www.sciencedirect.com/science/article/pii/S240563162100004XProstatempMRIAndrogen deprivationTextureGLCM |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Ulrika Björeland Tufve Nyholm Joakim Jonsson Mikael Skorpil Lennart Blomqvist Sara Strandberg Katrine Riklund Lars Beckman Camilla Thellenberg-Karlsson |
spellingShingle |
Ulrika Björeland Tufve Nyholm Joakim Jonsson Mikael Skorpil Lennart Blomqvist Sara Strandberg Katrine Riklund Lars Beckman Camilla Thellenberg-Karlsson Impact of neoadjuvant androgen deprivation therapy on magnetic resonance imaging features in prostate cancer before radiotherapy Physics and Imaging in Radiation Oncology Prostate mpMRI Androgen deprivation Texture GLCM |
author_facet |
Ulrika Björeland Tufve Nyholm Joakim Jonsson Mikael Skorpil Lennart Blomqvist Sara Strandberg Katrine Riklund Lars Beckman Camilla Thellenberg-Karlsson |
author_sort |
Ulrika Björeland |
title |
Impact of neoadjuvant androgen deprivation therapy on magnetic resonance imaging features in prostate cancer before radiotherapy |
title_short |
Impact of neoadjuvant androgen deprivation therapy on magnetic resonance imaging features in prostate cancer before radiotherapy |
title_full |
Impact of neoadjuvant androgen deprivation therapy on magnetic resonance imaging features in prostate cancer before radiotherapy |
title_fullStr |
Impact of neoadjuvant androgen deprivation therapy on magnetic resonance imaging features in prostate cancer before radiotherapy |
title_full_unstemmed |
Impact of neoadjuvant androgen deprivation therapy on magnetic resonance imaging features in prostate cancer before radiotherapy |
title_sort |
impact of neoadjuvant androgen deprivation therapy on magnetic resonance imaging features in prostate cancer before radiotherapy |
publisher |
Elsevier |
series |
Physics and Imaging in Radiation Oncology |
issn |
2405-6316 |
publishDate |
2021-01-01 |
description |
Background and purpose: In locally advanced prostate cancer (PC), androgen deprivation therapy (ADT) in combination with whole prostate radiotherapy (RT) is the standard treatment. ADT affects the prostate as well as the tumour on multiparametric magnetic resonance imaging (MRI) with decreased PC conspicuity and impaired localisation of the prostate lesion. Image texture analysis has been suggested to be of aid in separating tumour from normal tissue. The aim of the study was to investigate the impact of ADT on baseline defined MRI features in prostate cancer with the goal to investigate if it might be of use in radiotherapy planning. Materials and methods: Fifty PC patients were included. Multiparametric MRI was performed before, and three months after ADT. At baseline, a tumour volume was delineated on apparent diffusion coefficient (ADC) maps with suspected tumour content and a reference volume in normal prostatic tissue. These volumes were transferred to MRIs after ADT and were analysed with first-order -and invariant Haralick -features. Results: At baseline, the median value and several of the invariant Haralick features of ADC, showed a significant difference between tumour and reference volumes. After ADT, only ADC median value could significantly differentiate the two volumes. Conclusions: Invariant Haralick -features could not distinguish between baseline MRI defined PC and normal tissue after ADT. First-order median value remained significantly different in tumour and reference volumes after ADT, but the difference was less pronounced than before ADT. |
topic |
Prostate mpMRI Androgen deprivation Texture GLCM |
url |
http://www.sciencedirect.com/science/article/pii/S240563162100004X |
work_keys_str_mv |
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