The effect of gamma ray penetration on angle-dependent sensitivity for pinhole collimation in nuclear medicine

1997 ◽  
Vol 24 (11) ◽  
pp. 1701-1709 ◽  
Author(s):  
Mark F. Smith ◽  
Ronald J. Jaszczak
Keyword(s):  
Nuclear Medicine ◽  
Gamma Ray

Semiconductor pixel detectors for gamma-ray imaging in nuclear medicine

1997 ◽  
Vol 395 (3) ◽  
pp. 421-428 ◽  
Author(s):  
H.B. Barber ◽  
B.A. Apotovsky ◽  
F.L. Augustine ◽  
H.H. Barrett ◽  
E.L. Dereniak ◽  
...  
Keyword(s):  
Nuclear Medicine ◽  
Gamma Ray ◽  
Pixel Detectors ◽  
Gamma Ray Imaging

Development of a miniature gamma-ray endoscopic probe for tumor localization in nuclear medicine

1993 ◽  
Vol 40 (2) ◽  
pp. 88-94 ◽  
Author(s):  
H. Watabe ◽  
T. Nakamura ◽  
H. Takahashi ◽  
M. Itoh ◽  
M. Matsumoto ◽  
...  
Keyword(s):  
Nuclear Medicine ◽  
Gamma Ray ◽  
Tumor Localization

scholarly journals The use of radioactive substances in medicine — history and development prospects

2021 ◽  
Vol 67 (6) ◽  
pp. 59-67
Author(s):  
M. S. Sheremeta ◽  
A. A. Trukhin ◽  
M. O. Korchagina
Keyword(s):  
Nuclear Medicine ◽  
Gamma Ray ◽  
Clinical Medicine ◽  
Radiation Energy ◽  
Medical Specialty ◽  
80Th Anniversary ◽  
Genomic Technologies ◽  
Alpha Emission ◽  
Medicine History ◽  
Development Prospects

Nuclear medicine (NM) is a medical specialty that uses radionuclides (radioactive tracers) and ionising radiation for diagnostic and therapeutic (theranostic) purposes. Nuclear medicine arose and developed at the intersection of physics, chemistry and clinical medicine. The radiation emitted by radioisotopes can consist of gamma-, beta- and alpha emission, or it’s combination. Radioisotope of choice for medical purposes should have futher requirements: low radiotoxicity, suitable type of radiation, energy and half-life (several minutes to several hours and days), and also convenient detection of gamma ray radiation. The radionuclide is part of radiopharmaceutical (RP) and acts as its indicator. RP accumulates in morphological structures, becomes a carrier of coordinated information from patient to gamma camera or other equipment and reflects the dynamics of processes occurring in the examined organ. In 2021 NM celebrates its 80th anniversary. The trajectory of NM combines modern methods of radiotheranostics and applied genomic and post-genomic technologies.

scholarly journals A new evaluation of the nuclear decay data of 223Ra

2020 ◽  
Vol 239 ◽  
pp. 23002
Author(s):  
Aurelian Luca ◽  
Mark A. Kellett
Keyword(s):  
Nuclear Medicine ◽  
Decay Scheme ◽  
Gamma Ray ◽  
Data Evaluation ◽  
Nuclear Decay ◽  
High Quality ◽  
Targeted Radiotherapy ◽  
Decay Data ◽  
Evaluation Project ◽  
Quality Measurements

Since 2013, the radionuclide 223Ra is used in nuclear medicine to prepare radiopharmaceuticals for targeted radiotherapy. 223Ra is a member of the natural radioactive series of actinium and decays by alpha-particle emission, populating the excited levels of 219Rn. According to the 2011 nuclear decay data evaluation within the Decay Data Evaluation Project (DDEP), by V.P. Chechev, the half-life of 223Ra is (11.43 ± 0.03) days. The decay scheme is not considered as fully complete, because of the disagreement between the measured and calculated probabilities of some alpha-transitions and incomplete information on several gamma-ray transitions. New high quality measurements of 223Ra nuclear decay data were performed and numerous results were published since 2012 and, consequently, an updated nuclear decay data evaluation was undertaken, according to the DDEP procedures. The main results obtained, focusing on the recommended data improvements, are presented and discussed in this paper.

scholarly journals Gamma-Ray Protection Properties of Bismuth-Silicate Glasses against Some Diagnostic Nuclear Medicine Radioisotopes: A Comprehensive Study

Materials ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 6668
Author(s):  
Ghada ALMisned ◽  
Hesham M. H. Zakaly ◽  
Shams A. M. Issa ◽  
Antoaneta Ene ◽  
Gokhan Kilic ◽  
...  
Keyword(s):  
Nuclear Medicine ◽  
Gamma Ray ◽  
Effective Atomic Number ◽  
Mean Free Path ◽  
Mass Attenuation Coefficient ◽  
Silicate Glasses ◽  
Bismuth Silicate ◽  
Diagnostic Nuclear Medicine ◽  
Gamma Ray Attenuation ◽  
Comprehensive Study

This study aimed to perform an investigation for the potential implementation of bismuth silicate glasses as novel shield equipment instead of ordinary shields in nuclear medicine facilities. Accordingly, a group of Bi2O3 reinforced silicate glass system were investigated and compared with ordinary shields in terms of their gamma-ray attenuation properties in diagnostic nuclear medicine radioisotope energies emitted from 99mTc, 111In, 67Ga, 123I, 131I, 81mKr, 201Tl, 133Xe. Mass attenuation coefficient (μm) results for glass samples were calculated comparatively with the XCOM program and MCNPX code. The gamma-ray attenuation parameters such as half value layer (HVL), tenth value layer (TVL), mean free path (MFP), effective atomic number (Zeff) were obtained in the diagnostic gamma ray energy range from 75 to 336 keV. To confirm the attenuation performance of superior sample, obtained results were extensively compared with ordinary shielding materials. According to the results obtained, BISI6 glass sample with the highest Bi2O3 additive has an excellent gamma-ray protection.

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