PantherPix hybrid pixel gamma-ray detector for radio-therapeutic applications

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F18%3A00319616" target="_blank" >RIV/68407700:21340/18:00319616 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1088/1748-0221/13/02/C02036" target="_blank" >http://dx.doi.org/10.1088/1748-0221/13/02/C02036</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1748-0221/13/02/C02036" target="_blank" >10.1088/1748-0221/13/02/C02036</a>

Result language

angličtina

Original language name

PantherPix hybrid pixel gamma-ray detector for radio-therapeutic applications

Original language description

This work focuses on the design of a semiconductor pixelated gamma-ray camera with a pixel size of 1mm(2). The cost of semiconductor manufacturing is mainly driven by economies of scale, which makes silicon the cheapest semiconductor material due to its widespread utilization. The energy of gamma-photons used in radiation therapy are in a range, in which the dominant interaction mechanism is Compton scattering in every conceivable sensor material. Since the Compton scattering cross section is linearly dependent upon Z, it is less rewarding to utilize high Z sensor materials, than it is in the case of X- ray detectors ( X- rays interact also via the photoelectric effect whose cross section scales proportional to Z(n), where n is approximate to 4; 5). For the stated reasons it was decided to use the low Z material silicon (Z = 14) despite its worse detection efficiency. The proposed detector is designed as a portal detector to be used in radiation cancer therapy. The purpose of the detector is to ensure correct patient alignment, spatial dose monitoring and to provide the feedback necessary for an emergency shutdown should the spatial dose rate profile deviate from the treatment plan. Radiation therapy equipment is complex and thus failure prone and the consequences of malfunction are often life threatening. High spatial resolution and high detection efficiency are not a high design priority. The detector design priorities are focused up on radiation hardness, robustness and the ability to cover a large area cost efficiently. The quintessential idea of the PanterPix detector exploits the relaxed spatial resolution requirement to achieve the stated goals. The detector is composed of submodules, each submodule consisting of a Si sensor with an array of fully depleted detection diodes and 8 miniature custom design readout ASICs collecting and measuring the minuscule charge packets generated due to ionization in the PN junctions.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

20602 - Medical laboratory technology (including laboratory samples analysis; diagnostic technologies) (Biomaterials to be 2.9 [physical characteristics of living material as related to medical implants, devices, sensors])

Project

<a href="/en/project/TE01020069" target="_blank" >TE01020069: Advanced Detection Systems of Ionizing Radiation</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Instrumentation

ISSN

1748-0221

e-ISSN

1748-0221

Volume of the periodical

13

Issue of the periodical within the volume

Feb

Country of publishing house

GB - UNITED KINGDOM

Number of pages

10

Pages from-to

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UT code for WoS article

000425938300001

EID of the result in the Scopus database

2-s2.0-85043576552