The nuclide 67Ga is widely used in nuclear medicine for diagnostic purposes. It decays with a half-life of 3.259 days to 67Zn, a stable nuclide. The decay mode is electron capture with several branches followed by gamma-de-excitation. One of the excited levels of 67Zn with energy 93 keV has a half-life of 9.1 micros, which makes its absolute standardization by coincidence methods difficult. Two methods were used to standardize a solution of this nuclide: (a) 4pi-EC(PPC)-gamma(NaI) coincidence counting with efficiency extrapolation to infinite dead time and (b) high-efficiency 4pigamma counting with a well-type NaI detector.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.apradiso.2003.11.041 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Utilizing Targeted Next-Generation Sequencing for Rapid, Accurate, and Cost-Effective Pathogen Detection in Lower Respiratory Tract Infections.
Infect Drug Resist
January 2025
Department of Respiratory and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, People's Republic of China.
Objective: To evaluate the diagnostic performance and clinical impact of targeted next-generation sequencing (tNGS) in patients with suspected lower respiratory tract infections.
Methods: Following propensity score matching, we compared the diagnostic performances of tNGS and metagenomic next-generation sequencing (mNGS). Furthermore, the diagnostic performance of tNGS was compared with that of culture, and its clinical impact was assessed.
H syndrome with bilateral choroidal osteoma: Coincidence or association?
Eur J Ophthalmol
January 2025
Department of Medical Genetics, Istanbul Medipol University, Istanbul, Turkey.
Purpose: To report a case with bilateral corneal arcus and bilateral choroidal osteoma associated with H syndrome.
Methods: Descriptive case report.
Results: A 16-year-old girl with H syndrome was followed up in the pediatric nephrology clinic for chronic renal failure and was consulted to the ophthalmology clinic.
Establishment of a rapid method for the detection of canis based on recombinase-mediated thermostable nucleic acid amplification technology.
Front Cell Infect Microbiol
January 2025
The First Affiliated Hospital of Gannan Medical University, Ganzhou, Jiangxi, China.
Objective: To establish a rapid detection method for canine using recombinase-aided amplification (RAA) technology.
Methods: The outer membrane protein 25 gene fragment (Omp25) of canis was targeted. Primers and fluorescent probes were designed and synthesized, and recombinant plasmids were constructed as standards.
[Clinical significance of molecular classification and hereditary phenotypic characteristics in endometrial carcinoma].
Zhonghua Zhong Liu Za Zhi
January 2025
Department of Pathology, China-Japan Friendship Hospital, Beijing100029, China.
To analyze the clinical significance of molecular classification and hereditary phenotype in endometrial carcinoma (EC) based on high throughput sequencing (NGS). 97 EC samples were collected retrospectively from December 2019 to October 2022 in China-Japan Friendship Hospital. NGS technique was used to analyze the molecular classification, POLE hypermutation, microsatellite high Instability/mismatch repair dysfunction (MSI-H/MMRd), P53 protein abnormality (P53 abn), and non-specific molecular profile (NSMP).
View Article and Find Full Text PDFCrystal-level timing calibration using cascaded photons ofCo point source for long axial animal PET system.
Phys Med Biol
January 2025
Institute of High Energy Physics Chinese Academy of Sciences, 19B Yuquan Road, Shijingshan District, Beijing, Beijing, Beijing, 100049, CHINA.
Objective: Timing calibration is essential for positron emission tomography (PET) system as it enhances timing resolution to improve image quality. Traditionally, positron sources are employed for timing calibration. However, the photons emitted by these sources travel in opposite directions, necessitating that positrons annihilate at multiple locations to collect coincidence data across a greater number of lines of response (LORs).
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!