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Updated: Jun 21, 2026

Multicolor 3D Printing of Complex Intracranial Tumors in Neurosurgery
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基于深度学习的头癌的3D分类PET/MRI:放射科医生比较和Grad-CAM解释性

Joonas Liedes1, Jussi Hirvonen1,2, Oona Rainio1

  • 1Turku PET Centre, University of Turku and Turku University Hospital, Turku, Finland.

Clinical physiology and functional imaging
|September 25, 2025
PubMed
概括

一个新的AI模型使用PET扫描精确检测头癌 (HNC),显示高灵敏度预先查. 需要进一步改进,以提高特异性并减少临床使用前的错误阳性.

关键词:
在 Grad-CAM 中使用.有关PET/MRI的研究.深度学习是一种深度学习.头部和部癌症 头部和部癌症可解释的人工智能AI

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Computed Tomography01:10

Computed Tomography

Tomography refers to imaging by sections. Computed tomography (CT) is a non-invasive imaging technique that uses computers to analyze several cross-sectional X-rays to reveal minute details about structures in the body.
The technique was invented in the 1970s and is based on the principle that as X-rays pass through the body, they are absorbed or reflected at different levels. In the technique, a patient lies on a motorized platform while a computerized axial tomography (CAT) scanner rotates...
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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 being...
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Radiological Investigation III: Pulmonary Angiogram and PET Scan

Radiological investigations are paramount in the diagnosis and management of various pulmonary diseases. Two essential investigations are the Pulmonary Angiogram and the Positron Emission Tomography (PET) Scan.
Pulmonary Angiogram
A Pulmonary Angiogram is an invasive procedure involving injecting a contrast medium through a catheter threaded into the pulmonary artery or the right side of the heart to visualize the pulmonary vasculature. Computed Tomography (CT) scans have mainly replaced this...
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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