Related Experiment Video
Updated: Aug 7, 2026

A Machine-Vision Approach to Transmission Electron Microscopy Workflows, Results Analysis and Data Management
Published on: June 23, 2023
[Effects of transmission counts on image quality during simultaneous emission/transmission scan]
Kazumasa Inoue1, Keiichi Oda, Masahiro Fukushi
1Graduate School of Health Sciences, Tokyo Metropolitan University.
Abstract:
We compared the pre-injection transmission scan with the simultaneous emission/transmission scan (SET) using a body phantom in positron emission tomography (PET) to study the factors affecting emission (EMIS) images with different transmission (TRAN) data. The results showed that total count, region, scan method, and EMIS component influenced the bias and noise statistics. This influence was further passed on to the EMIS data and affected the reconstructed image. However, the result of fixing EMIS scan time at 10 minutes was that the noise statistics of EMIS had a greater effect on image quality than TRAN. The optimal scan counts of SET in this study were 20 Mcounts, with a scan time of about 10 minutes (85.5 MBq, (68)Ge-(68)Ga radioactivity). In clinical use, optimal collection count differs, as radiation TRAN quantity depends on the size of the subject, even with fixed radioactivity of (68)Ge-(68)Ga.
Related Concept Videos
Transmission Electron Microscopy
Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation
There are three main types of inductively coupled plasma atomic emission spectroscopy (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used.

