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Tomography, Volume 10, Issue 1

January 2024 - 14 articles

Cover Story: This study assesses the merits of using spin-echo (SE) dynamic susceptibility contrast (DSC) magnetic resonance imaging (MRI) at 7 Tesla to study cerebral perfusion in elderly adults. By tracking susceptibility changes during the passage of a contrast agent (CA) bolus caused by the in- and out-flowing blood, regional quantitative perfusion measures can be obtained. In contrast with the gold standard, Gradient Echo (GE) DSC MRI, SE DSC MRI has a higher sensitivity to the microvasculature (up to ~10 µm diameter). Furthermore, ultra-high-field MRI (≥7 T) provides unique possibilities to provide better images, due to increased signal sensitivity. This makes it possible to obtain the specific capillary blood volume and flow, enabling one to further dive into the physiology at a more microvascular level. View this paper

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Articles (14)

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Article

2 Citations

2,526 Views

10 Pages

Cone-Beam Computerized Tomography Evaluation of the Relationship between Orthodontic Vertical Direction Parameters and the Distance from the Apex of the Upper Central Tooth to the Nasal Floor and Anterior Nasal Spine

Saadet Çınarsoy Ciğerim and
Türkan Sezen Erhamza

Tomography2024, 10(1), 37-46;https://doi.org/10.3390/tomography10010004

5 January 2024

The aim of this study was to examine the relationship between the vertical cephalometric values and the distance from the apex tip of the upper central tooth (U1A) to the anterior nasal spine (ANS) and nasal floor (NF) using cone-beam computerized to...

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Review

2,409 Views

12 Pages

Residual Lung Abnormalities in Survivors of Severe or Critical COVID-19 at One-Year Follow-Up Computed Tomography: A Narrative Review Comparing the European and East Asian Experiences

Andrea Borghesi,
Pietro Ciolli,
Elisabetta Antonelli,
Alessandro Monti,
Alessandra Scrimieri,
Marco Ravanelli,
Roberto Maroldi and
Davide Farina

Tomography2024, 10(1), 25-36;https://doi.org/10.3390/tomography10010003

30 December 2023

The literature reports that there was a significant difference in the medical impact of the coronavirus disease (COVID-19) pandemic between European and East Asian countries; specifically, the mortality rate of COVID-19 in Europe was significantly hi...

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Article

3 Citations

4,312 Views

11 Pages

Age-Dependent Changes in Effective Dose in Pediatric Brain CT: Comparisons of Estimation Methods

Yusuke Inoue,
Masahiro Mori,
Hiroyasu Itoh,
Kohei Mitsui,
Hiroki Miyatake,
Takuro Yamane and
Hirofumi Hata

Tomography2024, 10(1), 14-24;https://doi.org/10.3390/tomography10010002

24 December 2023

The effective dose (ED) in computed tomography (CT) may be calculated by multiplying the dose–length product (DLP) by a conversion factor. As children grow, automatic exposure control increases the DLP, while the conversion factor decreases; th...

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Review

24 Citations

4,750 Views

13 Pages

Advantages of Photon-Counting Detector CT in Aortic Imaging

Chiara Zanon,
Filippo Cademartiri,
Alessandro Toniolo,
Costanza Bini,
Alberto Clemente,
Elda Chiara Colacchio,
Giulio Cabrelle,
Florinda Mastro,
Michele Antonello and
Emilio Quaia
+ 1 author

Tomography2024, 10(1), 1-13;https://doi.org/10.3390/tomography10010001

19 December 2023

Photon-counting Computed Tomography (PCCT) is a promising imaging technique. Using detectors that count the number and energy of photons in multiple bins, PCCT offers several advantages over conventional CT, including a higher image quality, reduced...

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