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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)

  • Article
  • Open Access
3 Citations
4,276 Views
12 Pages

Cerebral Microvascular Perfusion Assessed in Elderly Adults by Spin-Echo Dynamic Susceptibility Contrast MRI at 7 Tesla

  • Elles P. Elschot,
  • Walter H. Backes,
  • Marieke van den Kerkhof,
  • Alida A. Postma,
  • Abraham A. Kroon and
  • Jacobus F. A. Jansen

18 January 2024

Perfusion measures of the total vasculature are commonly derived with gradient-echo (GE) dynamic susceptibility contrast (DSC) MR images, which are acquired during the early passes of a contrast agent. Alternatively, spin-echo (SE) DSC can be used to...

  • Article
  • Open Access
3 Citations
2,815 Views
12 Pages

Accelerated Hypofractionated Magnetic Resonance Guided Adaptive Radiation Therapy for Ultracentral Lung Tumors

  • Alonso La Rosa,
  • Kathryn E. Mittauer,
  • Nema Bassiri,
  • Amy E. Rzepczynski,
  • Michael D. Chuong,
  • Sreenija Yarlagadda,
  • Tugce Kutuk,
  • Nicole C. McAllister,
  • Matthew D. Hall and
  • Alonso N. Gutierrez
  • + 3 authors

17 January 2024

Radiotherapy for ultracentral lung tumors represents a treatment challenge, considering the high rates of high-grade treatment-related toxicities with stereotactic body radiation therapy (SBRT) or hypofractionated schedules. Accelerated hypofractiona...

  • Article
  • Open Access
3 Citations
6,850 Views
10 Pages

Lumbar Disc Degeneration Is Linked to Dorsal Subcutaneous Fat Thickness at the L1–L2 Intervertebral Disc Level Measured by MRI

  • Ibrahem Hussain Kanbayti,
  • Abdulrahman S. Al-Buqami,
  • Mohammad H. Alsheikh,
  • Saad M. Al-Malki,
  • Ibrahim Hadadi,
  • Adnan Alahmadi,
  • Bander S. Almutairi and
  • Hamzah H. Ahmed

17 January 2024

Background: Obese individuals have a higher risk of degenerative disc disease (DDD). Currently, body mass index is not sensitive enough to differentiate between muscle and fat distribution, and obesity-related health issues are linked to the way body...

  • Article
  • Open Access
1,965 Views
26 Pages

16 January 2024

Sparse view computed tomography (SVCT) aims to reduce the number of X-ray projection views required for reconstructing the cross-sectional image of an object. While SVCT significantly reduces X-ray radiation dose and speeds up scanning, insufficient...

  • Article
  • Open Access
5 Citations
3,827 Views
28 Pages

RETRACTED: Modern Subtype Classification and Outlier Detection Using the Attention Embedder to Transform Ovarian Cancer Diagnosis

  • S. M. Nuruzzaman Nobel,
  • S M Masfequier Rahman Swapno,
  • Md. Ashraful Hossain,
  • Mejdl Safran,
  • Sultan Alfarhood,
  • Md. Mohsin Kabir and
  • M. F. Mridha

15 January 2024

Ovarian cancer, a deadly female reproductive system disease, is a significant challenge in medical research due to its notorious lethality. Addressing ovarian cancer in the current medical landscape has become more complex than ever. This research ex...

  • Article
  • Open Access
4 Citations
5,303 Views
11 Pages

Assessment of Hounsfield Units and Factors Associated with Fragmentation of Renal Stones by Extracorporeal Shock Wave Lithotripsy: A Computerized Tomography Study

  • Abdallah Saud Alharbi,
  • Moawia Gameraddin,
  • Awadia Gareeballah,
  • Zahra Jibril Shrwani,
  • Moa’ath Abdullah Sindi,
  • Hassan Ibrahim Alsaedi,
  • Abdulaziz A. Qurashi,
  • Khalid M. Aloufi,
  • Abdullah Fahad A. Alshamrani and
  • Amel F. Alzain

11 January 2024

The success rate of extracorporeal shock wave lithotripsy (ESWL) is influenced by various factors, including stone density, and is determined through computed tomography scans in terms of Hounsfield units (HU). Materials and Methods: This retrospecti...

  • Article
  • Open Access
3 Citations
1,820 Views
11 Pages

The Use of Pre-Chemoradiotherapy Total Masseter Muscle Volume as a Novel Predictor of Radiation-Induced Trismus in Locally Advanced Nasopharyngeal Carcinoma Patients

  • Efsun Somay,
  • Erkan Topkan,
  • Umur Anil Pehlivan,
  • Busra Yilmaz,
  • Ali Ayberk Besen,
  • Huseyin Mertsoylu,
  • Berrin Pehlivan and
  • Ugur Selek

10 January 2024

Background: We sought to determine whether pretreatment total masseter muscle volume (TMMV) measures can predict radiation-induced trismus (RIT) in patients with locally advanced nasopharyngeal carcinoma (LA-NPC) receiving concurrent chemoradiotherap...

  • Article
  • Open Access
3 Citations
2,667 Views
13 Pages

The Role of Major Salivary Gland Ultrasound in the Diagnostic Workup of Sicca Syndrome: A Large Single-Centre Study

  • Giulia Vallifuoco,
  • Paolo Falsetti,
  • Marco Bardelli,
  • Edoardo Conticini,
  • Stefano Gentileschi,
  • Caterina Baldi,
  • Suhel Gabriele Al Khayyat,
  • Luca Cantarini and
  • Bruno Frediani

8 January 2024

(1) Objective: To determine the diagnostic accuracy of major salivary gland ultrasonography (SGUS) in primary Sjogren’s syndrome (SS), we used the Outcome Measures in Rheumatology Clinical Trials (OMERACT) scoring system on a large single-centr...

  • Review
  • Open Access
6 Citations
9,126 Views
19 Pages

Primary Sclerosing Cholangitis: Diagnostic Criteria

  • Nora Cazzagon,
  • Samantha Sarcognato,
  • Elisa Catanzaro,
  • Emanuela Bonaiuto,
  • Matteo Peviani,
  • Francesco Pezzato and
  • Raffaella Motta

7 January 2024

Primary sclerosing cholangitis is a chronic cholestatic liver disease characterized by inflammation and fibrosis of intra- and/or extrahepatic bile ducts leading to the formation of multifocal strictures alternated to bile duct dilatations. The diagn...

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Tomography - ISSN 2379-139X