[HTML][HTML] In vivo dosimetry in brachytherapy: requirements and future directions for research, development, and clinical practice

GP Fonseca, JG Johansen, RL Smith… - Physics and imaging in …, 2020 - Elsevier
Brachytherapy can deliver high doses to the target while sparing healthy tissues due to its
steep dose gradient leading to excellent clinical outcome. Treatment accuracy depends on …

Predictors of isokinetic back muscle strength in patients with low back pain

A Keller, JG Johansen, J Hellesnes, JI Brox - Spine, 1999 - journals.lww.com
Study Design. Testing for trunk muscle strength was performed on 105 patients with chronic
low back pain. Objectives. To investigate prediction of isokinetic back muscle strength in …

Time-resolved in vivo dosimetry for source tracking in brachytherapy

JG Johansen, S Rylander, S Buus, L Bentzen… - Brachytherapy, 2018 - Elsevier
Purpose The purpose of this article is to demonstrate that brachytherapy source tracking can
be realized with in vivo dosimetry. This concept could enable real-time treatment monitoring…

[HTML][HTML] Pencil beam scanning proton FLASH maintains tumor control while normal tissue damage is reduced in a mouse model

…, MK Sitarz, C Ankjærgaard, JG Johansen… - Radiotherapy and …, 2022 - Elsevier
Purpose Preclinical studies indicate a normal tissue sparing effect when ultra-high dose rate
(FLASH) radiation is used, while tumor response is maintained. This differential response …

[HTML][HTML] Be11 (βp), a quasi-free neutron decay?

…, T Giles, A Gottberg, A Heinz, JG Johansen… - Physics Letters B, 2014 - Elsevier
We have observed β − -delayed proton emission from the neutron-rich nucleus 11 Be by
analyzing a sample collected at the ISOLDE facility at CERN with accelerator mass …

[HTML][HTML] Single-neutron orbits near 78Ni: Spectroscopy of the N= 49 isotope 79Zn

…, V Bildstein, R Chapman, G De Angelis, JG Johansen… - Physics Letters B, 2015 - Elsevier
Single-neutron states in the Z = 30 , N = 49 isotope 79 Zn have been populated using the 78
Zn(d, p) 79 Zn transfer reaction at REX-ISOLDE, CERN. The experimental setup allowed the …

Time structure of pencil beam scanning proton FLASH beams measured with scintillator detectors and compared with log files

E Kanouta, JG Johansen, G Kertzscher… - Medical …, 2022 - Wiley Online Library
Purpose Key factors in FLASH treatments are the ultra‐high dose rate (UHDR) and the time
structure of the beam delivery. Measurement of the time structure in pencil beam scanning (…

A high‐Z inorganic scintillator–based detector for time‐resolved in vivo dosimetry during brachytherapy

EB Jørgensen, JG Johansen, J Overgaard… - Medical …, 2021 - Wiley Online Library
Purpose High‐dose rate (HDR) and pulsed‐dose rate (PDR) brachytherapy would benefit
from an independent treatment verification system to monitor treatment delivery and to detect …

Accuracy of an in vivo dosimetry‐based source tracking method for afterloading brachytherapy — A phantom study

…, S Rylander, K Tanderup, JG Johansen - Medical …, 2021 - Wiley Online Library
Johansen et al. The strength and weaknesses of the ST method which have been
investigated here can aid in defining clinical studies and analyze clinical IVD data in the future. …

3D source tracking and error detection in HDR using two independent scintillator dosimetry systems

HM Linares Rosales, JG Johansen… - Medical …, 2021 - Wiley Online Library
Purpose The aim of this study is to perform three‐dimensional (3D) source position reconstruction
by combining in vivo dosimetry measurements from two independent detector systems…