Related Experiment Video
Updated: Aug 27, 2026

Time-Resolved, Dynamic Computed Tomography Angiography for Characterization of Aortic Endoleaks and Treatment Guidance via 2D-3D Fusion-Imaging
Published on: December 9, 2021
Dynamic 3D Blood Pool SPECT Imaging Using a Full-Ring Multidetector CZT SPECT Scanner for Diagnosing Thoracic
Masahiro Koyama1,2, Yohji Matsusaka1,2, Masafumi Takahashi3
1Department of Radiology, Division of Nuclear Medicine, Saitama Medical University Hospital.
Abstract:
An 85-year-old woman underwent chest computed tomography (CT) during follow-up for COVID-19 infection, which incidentally revealed a 31-mm mass below the tracheal bifurcation. Because contrast-enhanced CT was not recommended due to renal impairment, endoscopic ultrasonography was performed and demonstrated intralesional blood flow, suggesting a vascular lesion. Dynamic and static 99mTc-human serum albumin-diethylenetriamine pentaacetic acid SPECT imaging using a full-ring multidetector CZT SPECT scanner was subsequently performed. Static images confirmed the vascular nature of the lesion, while dynamic 3D SPECT with 2-second serial acquisition and time-activity curve analysis demonstrated peak enhancement synchronized with the aorta, enabling definitive diagnosis of an aneurysm.
Related Concept Videos
Imaging Studies for Cardiovascular System V: CT
Imaging Studies II: Positron Emission Tomography and Scintigraphy
Fundamental Principles of PET
Acute Coronary Syndrome III: Diagnostic Studies
Imaging Studies for Cardiovascular System III: X-Ray
Definition and Purpose
An X-ray, or radiograph, is a non-invasive method that uses ionizing radiation to take images of internal structures. It is mainly used in cardiac imaging to examine the heart, lungs, and major blood vessels, aiming to identify abnormalities in the heart's size, shape, and position, such as heart failure, congenital defects, and vascular...
Radiological Investigation III: Pulmonary Angiogram and 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...
Imaging Studies for Cardiovascular System II:Types of Echocardiography
Types of Echocardiography
Transthoracic Echocardiography (TTE)
TTE is the most common type of echocardiogram which involves placing a transducer on the patient's chest, emitting sound waves to create heart images. TTE is invaluable for evaluating the heart's size, structure, and motion, making it particularly useful for diagnosing...

