相关实验视频

Updated: Apr 11, 2026

Gene Regulation and Targeted Therapy in Gastric Cancer Peritoneal Metastasis: Radiological Findings from Dual Energy CT and PET/CT

Gene Regulation and Targeted Therapy in Gastric Cancer Peritoneal Metastasis: Radiological Findings from Dual Energy CT and PET/CT

Published on: January 22, 2018

使用IDAC和OLINDA对18F-FDG和68Ga-PSMAPET/CT程序进行有效剂量估计

Fatma Hilal Bikirli¹, Nesrin Altinsoy¹, Türkay Toklu²

¹İstanbul Technical University (ITU), Institute of Energy, Ayazaga Campus, 34469, İstanbul, Turkey.

|August 29, 2025

概括

这项研究使用各种剂量测量软件确定了接受PET/ CT扫描的瘤患者的有效剂量. CT扫描对18F-FDG和68Ga-PSMA放射性药物的总有效剂量有显著的贡献.

科学领域:

医学物理
核医学
辐射科学

背景情况:

内部剂量测量对于核医学中的辐射安全至关重要.
精确的有效剂量评估对于优化患者和辐射工作者安全至关重要.
在瘤学中广泛使用PET/CT扫描,需要精确的剂量计算.

研究的目的:

在接受PET/ CT扫描的瘤患者中,以后期确定有效剂量.
通过不同剂量计计算机代码获得的有效剂量结果进行比较.
评估PET和CT成分对总有效剂量的贡献.

主要方法:

在305名接受PET/CT的瘤病人的有效剂量的回顾性分析.
使用的放射性药物是18F-FDG (n=220) 和68Ga-PSMA (n=85).
使用OLINDA/EXM,IDAC-剂量1.0,IDAC-剂量2.1用于PET剂量测量和IMPACT用于CT剂量测量,遵守ICRP60和ICRP103标准.

主要成果:

对于18F-FDG,在不同的软件和权重因子中,PET的有效剂量在6. 28到9. 96mSv之间.
对于68Ga-PSMA,最高的PET有效剂量为3. 65mSv (OLINDA/ EXM).
在18F-FDG和92%的68Ga-PSMA协议中,CT对总有效剂量有显著的贡献.

结论:

在PET/CT扫描中,剂量测量软件可提供不同的有效剂量估计值.
在PET/CT手术中,CT成分对整体有效剂量有很大影响.
标准化剂量测量方案对于一致的辐射安全评估至关重要.

关键词:

吸收的剂量内部的剂量有效剂量辐射剂量

更多相关视频

A Practical Guide for the Production and PET/CT Imaging of 68Ga-DOTATATE for Neuroendocrine Tumors in Daily Clinical Practice

A Practical Guide for the Production and PET/CT Imaging of 68Ga-DOTATATE for Neuroendocrine Tumors in Daily Clinical Practice

Published on: April 17, 2019

A Whole Body Dosimetry Protocol for Peptide-Receptor Radionuclide Therapy PRRT: 2D Planar Image and Hybrid 2D+3D SPECT/CT Image Methods

A Whole Body Dosimetry Protocol for Peptide-Receptor Radionuclide Therapy PRRT: 2D Planar Image and Hybrid 2D+3D SPECT/CT Image Methods

Published on: April 24, 2020

相关概念视频

Positron Emission Tomography

Positron Emission Tomography

Positron emission tomography (PET) is a medical imaging technique involving radiopharmaceuticals — substances that emit short-lived radiation. Although the first PET scanner was introduced in 1961, it took 15 more years before radiopharmaceuticals were combined with the technique and revolutionized its potential.
One of the main requirements of a PET scan is a positron-emitting radioisotope, which is produced in a cyclotron and then attached to a substance used by the part of the body...

Imaging Studies II: Positron Emission Tomography and Scintigraphy

Imaging Studies II: Positron Emission Tomography and Scintigraphy

Positron Emission Tomography (PET) is a medical imaging technique that provides crucial insights into the body's physiological functions at a molecular level. It is an indispensable resource for diagnosing, staging, and monitoring various illnesses, notably cancer, neurological disorders, and cardiovascular conditions.
Fundamental Principles of PET