scholarly journals Modern possibilities of cardiovascular imaging using gamma cameras with cadmium–zinc–telluride-detectors

2020 ◽  
Vol 24 (3) ◽  
pp. 11
Author(s):  
S. M. Minin ◽  
K. V. Zavadovky ◽  
N. A. Nikitin ◽  
A. V. Mochula ◽  
A. B. Romanov
Keyword(s):  
Conflict Of Interest ◽  
Cadmium Zinc Telluride ◽  
Zinc Telluride ◽  
Diagnostic Tools ◽  
Cardiac Spect ◽  
Gamma Cameras ◽  
Non Invasive ◽  
Flow Reserve ◽  
Czt Detectors ◽  
Cadmium Zinc

<p>Myocardial perfusion imaging is considered one of the leading non-invasive diagnostic tools for the assessment of patients with known or suspected coronary artery disease and other cardiac pathologies. The technical improvement of the currently used gamma-tomographic devices has increased the diagnostic capability of this technique. In recent years, the use of dedicated cardiac SPECT cameras with solid-state cadmium–zinc–telluride (CZT) technology has increased in nuclear imaging. These new CZT technologies have several advantages over existing scanner models. The development of new CZT detectors and their collimator configuration has increased scanning sensitivity and spatial resolution values. Also, due to the significantly higher sensitivity of new CZT detectors and new methods of data processing, radiologists have already introduced new scanning protocols and methods for radionuclide assessment of myocardial blood flow, reserve and non-invasive visualisation of the functioning of the sympathetic nervous system into clinical practice. The purpose of this review is to provide data on the main technical characteristics of gamma cameras equipped CZT detectors as well as the current possibilities of using CZT cameras for examining patients with various cardiovascular diseases.</p><p>Received 1 April 2020. Revised 22 April 2020. Accepted 30 April 2019.</p><p><strong>Funding:</strong> The work is supported by a grant of the Russian Science Foundation No. 17-75-20118.</p><p><strong>Conflict of interest:</strong> Authors declare no conflict of interest.</p><p><strong>Author contributions</strong><br />Conception and study design: S.M. Minin, K.V. Zavadovky, A.B. Romanov<br />Drafting the article: S.M. Minin, K.V. Zavadovky, N.A. Nikitin, A.V. Mochula, A.B. Romanov<br />Critical revision of the article: S.M. Minin, K.V. Zavadovky<br />Final approval of the version to be published: S.M. Minin, K.V. Zavadovky, N.A. Nikitin, A.V. Mochula, A.B. Romanov</p>

scholarly journals Diagnostic Performance of a Novel Cadmium-Zinc-Telluride Gamma Camera System Assessed Using Fractional Flow Reserve

2014 ◽  
Vol 78 (11) ◽  
pp. 2727-2734 ◽  
Author(s):  
Hirokazu Tanaka ◽  
Taishiro Chikamori ◽  
Nobuhiro Tanaka ◽  
Satoshi Hida ◽  
Yuko Igarashi ◽  
...  
Keyword(s):  
Fractional Flow Reserve ◽  
Diagnostic Performance ◽  
Gamma Camera ◽  
Cadmium Zinc Telluride ◽  
Zinc Telluride ◽  
Fractional Flow ◽  
Camera System ◽  
Flow Reserve ◽  
Cadmium Zinc

On the Active Volume of Cadmium Zinc Telluride Gamma-Ray Spectrometers

1997 ◽  
Vol 487 ◽  
Author(s):  
J. C. Lund ◽  
B. A. Brunett ◽  
T. P. Viles ◽  
N. R. Hilton ◽  
R. B. James
Keyword(s):  
Gamma Ray ◽  
Cadmium Zinc Telluride ◽  
Pulse Height ◽  
Zinc Telluride ◽  
Charge Trapping ◽  
Active Volume ◽  
Electronic Signal Processing ◽  
Czt Detectors ◽  
Unipolar Devices ◽  
Cadmium Zinc

AbstractIn this paper we develop quantitative models to predict the active volume of cadmium zinc telluride (CZT) detectors operated as gamma-ray pulse height spectrometers. Three cases are considered: a conventional planar detector, a unipolar device, and a detector in which electronic signal processing has been applied to correct for charge trapping effects. We find that existing detectors are very limited in their maximum attainable active volume, but unipolar devices with charge correction show promise for producing large active volume devices.

ASSESSMENT OF EXERCISE CORONARY FLOW RESERVE WITH CADMIUM ZINC TELLURIDE GAMMA CAMERA

2018 ◽  
Vol 71 (11) ◽  
pp. A1503
Author(s):  
Gustavo Daquarti ◽  
Alejandro H. Meretta ◽  
Daniel Rosa ◽  
Eugenia Aguirre ◽  
Mariana Corneli ◽  
...  
Keyword(s):  
Coronary Flow Reserve ◽  
Coronary Flow ◽  
Gamma Camera ◽  
Cadmium Zinc Telluride ◽  
Zinc Telluride ◽  
Flow Reserve ◽  
Cadmium Zinc

scholarly journals Opto-electrical characterization and X-ray Mapping of large-volume cadmium zinc telluride radiation detectors

2009 ◽  
Vol 1164 ◽  
Author(s):  
Ge Yang ◽  
Aleksey E Bolotnik ◽  
Giuseppe Camarda ◽  
Yonggang Cui ◽  
Anwar Hossain ◽  
...  
Keyword(s):  
Large Volume ◽  
Cadmium Zinc Telluride ◽  
Radiation Detection ◽  
Zinc Telluride ◽  
Radiation Detectors ◽  
Internal Electric Field ◽  
Pockels Effect ◽  
X Ray ◽  
Czt Detectors ◽  
Cadmium Zinc

AbstractLarge-volume cadmium zinc telluride (CZT) radiation detectors would greatly improve radiation detection capabilities and, therefore, attract extensive scientific and commercial interests. CZT crystals with volumes as large as hundreds of centimeters can be achieved today due to improvements in the crystal growth technology. However, the poor performance of large-volume CZT detectors is still a challenging problem affecting the commercialization of CZT detectors and imaging arrays. We have employed Pockels effect measurements and synchrotron X-ray mapping techniques to investigate the performance-limiting factors for large-volume CZT detectors. Experimental results with the above characterization methods reveal the non-uniform distribution of internal electric field of large-volume CZT detectors, which help us to better understand the responsible mechanism for the insufficient carrier collection in large-volume CZT detectors.

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