TY - GEN
T1 - Transmission-less Attenuation Correction for Full and Partial Ring PET Scanners
AU - Beguin, Marina
AU - Commichau, Volker
AU - Flock, Judith
AU - Fuentes, Cristian
AU - Lomax, Tony
AU - Makkar, Shubhangi
AU - McNamara, Keegan
AU - Oddo, Mauro
AU - Prior, John O.
AU - Ritzer, Christian
AU - Weber, Damien C.
AU - Winterhalter, Carla
AU - Dissertori, Gunther
N1 - Publisher Copyright:
© 2021 IEEE.
PY - 2021
Y1 - 2021
N2 - The PETITION (PET for InTensive Care units and Innovative protON therapy) project aims to design two new bed-side Positron Emission Tomography (PET) scanners for Intensive Care Units (ICU) and proton beam therapy applications. The first device is intended to scan deeply sedated, critically-ill patients with sepsis infection directly at the ICU, as their condition does no allow for a transportation to regular PET/CT facilities. The second device is designed for online image acquisition for in vivo dosimetry and hypoxia tracking studies.While the ICU device is a conventional full ring PET scanner, the other system has a U-shaped design ensuring a suitable opening for protons irradiation. The attenuation of photons is the most important limiting factor of quantitative accuracy and quality of PET images. To perform attenuation correction, the knowledge of the patient-specific attenuation map (μ-map) is required. Several approaches, using either external information or emission data, already exist for the μ-map generation. The PETITION scanners do not offer the possibility to perform a transmission scan and therefore the attenuation map needs to be generated from emission data only. While the transmission-less method is already widely applied with full ring PET scanners, it is usually not used with partial ring devices. This document presents preliminary results of attenuation correction based on the emission of full and partial ring PET data only.
AB - The PETITION (PET for InTensive Care units and Innovative protON therapy) project aims to design two new bed-side Positron Emission Tomography (PET) scanners for Intensive Care Units (ICU) and proton beam therapy applications. The first device is intended to scan deeply sedated, critically-ill patients with sepsis infection directly at the ICU, as their condition does no allow for a transportation to regular PET/CT facilities. The second device is designed for online image acquisition for in vivo dosimetry and hypoxia tracking studies.While the ICU device is a conventional full ring PET scanner, the other system has a U-shaped design ensuring a suitable opening for protons irradiation. The attenuation of photons is the most important limiting factor of quantitative accuracy and quality of PET images. To perform attenuation correction, the knowledge of the patient-specific attenuation map (μ-map) is required. Several approaches, using either external information or emission data, already exist for the μ-map generation. The PETITION scanners do not offer the possibility to perform a transmission scan and therefore the attenuation map needs to be generated from emission data only. While the transmission-less method is already widely applied with full ring PET scanners, it is usually not used with partial ring devices. This document presents preliminary results of attenuation correction based on the emission of full and partial ring PET data only.
KW - Attenuation correction
KW - Partial ring PET scanner
KW - Positron Emission Tomography (PET)
KW - Quantitative imaging
KW - Transmission-less
UR - https://www.scopus.com/pages/publications/85139123091
U2 - 10.1109/NSS/MIC44867.2021.9875624
DO - 10.1109/NSS/MIC44867.2021.9875624
M3 - Conference contribution
AN - SCOPUS:85139123091
T3 - 2021 IEEE Nuclear Science Symposium and Medical Imaging Conference Record, NSS/MIC 2021 and 28th International Symposium on Room-Temperature Semiconductor Detectors, RTSD 2022
BT - 2021 IEEE Nuclear Science Symposium and Medical Imaging Conference Record, NSS/MIC 2021 and 28th International Symposium on Room-Temperature Semiconductor Detectors, RTSD 2022
A2 - Tomita, Hideki
A2 - Nakamura, Tatsuya
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2021 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2021
Y2 - 16 October 2021 through 23 October 2021
ER -