Principe et technique de la tomographie par émission de positons (TEP)

Dreuille, O. De; Maszelin, P.; Fœhrenbach, H.; Bonardel, G.; Gaillard, J

doi:10.1016/j.emcrad.2003.12.001

Cited by 7 publications

(7 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This coupling can offer remarkably high intrinsic positioning resolution and maximum sensitivity due to the absence of gaps between the sensing elements, while reducing the cost of the system through lower manufacturing costs [132]. However, the two significant limitations of this old detection coupling are the low density of the NaI (Tl) and the dead time resulting from the large size of the single crystal [133]. This design was abandoned in 2003 in favour of discrete crystal configurations [134].…”

Section: Monolithic Crystal Couplingmentioning

confidence: 99%

The detection instrumentation and geometric design of clinical PET scanner: towards better performance and broader clinical applications

El Ouaridi,

Ait Elcadi,

Mkimel

et al. 2024

Biomed. Phys. Eng. Express

View full text Add to dashboard Cite

Positron emission tomography (PET) is a powerful medical imaging modality used in nuclear medicine to diagnose and monitor various clinical diseases in patients. It is more sensitive and produces a highly quantitative mapping of the three-dimensional biodistribution of positron-emitting radiotracers inside the human body. The underlying technology is constantly evolving, and recent advances in detection instrumentation and PET scanner design have significantly improved the medical diagnosis capabilities of this imaging modality, making it more efficient and opening the way to broader, innovative, and promising clinical applications. Some significant achievements related to detection instrumentation include introducing new scintillators and photodetectors as well as developing innovative detector designs and coupling configurations. Other advances in scanner design include moving towards a cylindrical geometry, 3D acquisition mode, and the trend towards a wider axial field of view and a shorter diameter. Further research on PET camera instrumentation and design will be required to advance this technology by improving its performance and extending its clinical applications while optimising radiation dose, image acquisition time, and manufacturing cost. This article comprehensively reviews the various parameters of instrumentation and PET system design. Firstly, an overview of the historical innovation of the PET system has been presented, focusing on instrumental technology. Secondly, we have characterised the main performance parameters of current clinical PET and detailed recent instrumental innovations and trends that affect these performances and clinical practice. Finally, prospects for this medical imaging modality are presented and discussed. This overview of the PET system's instrumental parameters enables us to draw solid conclusions on achieving the best possible performance for the different needs of different clinical applications.

show abstract

Section: Monolithic Crystal Couplingmentioning

confidence: 99%

The detection instrumentation and geometric design of clinical PET scanner: towards better performance and broader clinical applications

El Ouaridi,

Ait Elcadi,

Mkimel

et al. 2024

Biomed. Phys. Eng. Express

View full text Add to dashboard Cite

show abstract

“…En effet, un positon émis se combine rapidement avec un électron pour produire deux photons qui partent à 180 degrés l'un de l'autre. C'est cette caractéristique géo-métrique qui est mise à profit dans une caméra TEP pour la détection [4] et qui explique la grande sensibilité de la technique.…”

Section: Principe De Formation De L'imageunclassified

“…D'autres types de quantification sont possibles, plus fiables, mais qui sont beaucoup plus lourds à mettre en oeuvre. Pour les lésions pulmonaires malignes, la littérature a fixé une valeur seuil de 2,5 [4]. Cet index de quantification, si facilement disponible sur toutes les machines, ne doit pas conduire à des conclusions trop hâtives [8], d'autant plus que sa valeur dépend (entre autres choses) de la machine !…”

Section: Pièges Et Contraintesunclassified

TEP-TDM et thorax

Laffon

Clermont

Bordenave

2010

Revue des Maladies Respiratoires

View full text Add to dashboard Cite

“…This radioactive isotope, generally the 18 F will interact with the human cells specific to the organ we wish to observe, and emit two diametrically opposed gamma (γ) photons [1]. A detection ring is then used to detect these photons ( Figure 1) [2]. By measuring a certain number of photon pairs, it will be possible, via mathematical techniques, to obtain an image estimating the overall distribution of the emission sites of these photons.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Tomographic Brain Reconstruction Techniques: Case of the Shepp-Logan Phantom

Tonyé¹,

Kabiena²

2017

IJBSBE

View full text Add to dashboard Cite

Carcinogenic tumors are the leading cause of death in the world. When clinicians have excellent shot, they are able to detect a tumor early and eradicate it easily by chemotherapy or by simple surgery. We propose in this paper to compare different methods of tomographic reconstruction of the brain from the point of view of the quality of the image provided, in order to propose to the physicians the algorithms which guarantee them the best image results. We use two comparison metrics based on the PSNR (Peak Signal to Noise Ratio) and the HVS (Human Visual System). The association of these two objective and subjective criteria show that the methods which exploit the reconstruction of the samples by subset provide images of better quality.

show abstract

Principe et technique de la tomographie par émission de positons (TEP)

Cited by 7 publications

References 47 publications

The detection instrumentation and geometric design of clinical PET scanner: towards better performance and broader clinical applications

The detection instrumentation and geometric design of clinical PET scanner: towards better performance and broader clinical applications

TEP-TDM et thorax

Evaluation of Tomographic Brain Reconstruction Techniques: Case of the Shepp-Logan Phantom

Contact Info

Product

Resources

About