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Tomography, Volume 9, Issue 1

February 2023 - 36 articles

Cover Story: The impacts of metal artifacts (MAs) on the contouring workload for head and neck radiotherapy have not yet been clarified. Therefore, we evaluated the relationship between the contouring time of the MA area and MAs on head and neck radiotherapy treatment planning. The contouring time of MAs showed moderate positive correlations with the MA volume and the number of CT images containing MAs. Interobserver reliability of the extracted MAs volume and contouring time were excellent and poor, respectively. From our results, it was suggested that the contouring time of MA areas is related to individual commitment rather than clinical experience. Therefore, the development of software combining metal artifact reduction methods with automatic contouring methods is necessary for reducing interobserver variability and contouring workload. View this paper
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Articles (36)

  • Article
  • Open Access
13 Citations
6,773 Views
17 Pages

Dual Magnetic Particle Imaging and Akaluc Bioluminescence Imaging for Tracking Cancer Cell Metastasis

  • Ryan J. Williams,
  • Olivia C. Sehl,
  • Julia J. Gevaert,
  • Shirley Liu,
  • John J. Kelly,
  • Paula J. Foster and
  • John A. Ronald

25 January 2023

Magnetic particle imaging (MPI) provides hotspot tracking and direct quantification of superparamagnetic iron oxide nanoparticle (SPIO)-labelled cells. Bioluminescence imaging (BLI) with the luciferase reporter gene Akaluc can provide complementary i...

  • Review
  • Open Access
17 Citations
5,998 Views
12 Pages

Radiation Exposure to Low-Dose Computed Tomography for Lung Cancer Screening: Should We Be Concerned?

  • Chiara Pozzessere,
  • Christophe von Garnier and
  • Catherine Beigelman-Aubry

24 January 2023

Lung cancer screening (LCS) programs through low-dose Computed Tomography (LDCT) are being implemented in several countries worldwide. Radiation exposure of healthy individuals due to prolonged CT screening rounds and, eventually, the additional exam...

  • Article
  • Open Access
8 Citations
5,929 Views
12 Pages

15 January 2023

Background: Multidetector computer tomography (CT) has been used to diagnose pathologies such as osteoporosis via opportunistic screening, where the assessment of the bone structure and the measurement of bone mineral density (BMD) are of great relev...

  • Article
  • Open Access
3 Citations
4,883 Views
11 Pages

A Combined Region- and Pixel-Based Deep Learning Approach for Quantifying Abdominal Adipose Tissue in Adolescents Using Dixon Magnetic Resonance Imaging

  • Olanrewaju A. Ogunleye,
  • Harish Raviprakash,
  • Ashlee M. Simmons,
  • Rhasaan T.M. Bovell,
  • Pedro E. Martinez,
  • Jack A. Yanovski,
  • Karen F. Berman,
  • Peter J. Schmidt,
  • Elizabeth C. Jones and
  • Hadi Bagheri
  • + 2 authors

15 January 2023

Background: The development of adipose tissue during adolescence may provide valuable insights into obesity-associated diseases. We propose an automated convolutional neural network (CNN) approach using Dixon-based magnetic resonance imaging (MRI) to...

  • Article
  • Open Access
8 Citations
6,432 Views
9 Pages

Comparison between PSMA PET/CT and MRI for Characterizing Hepatocellular carcinoma: A Real-World Study

  • Veronica Chi Ken Wong,
  • Joshua Yip,
  • Vincenzo Fragomeli,
  • Martin Weltman,
  • Han Loh,
  • Ken Le,
  • Diep Nguyen,
  • Chuong Bui and
  • Robert Mansberg

13 January 2023

Prostate specific membrane antigen (PSMA) is expressed by hepatocellular carcinoma (HCC). PSMA PET/CT has potential as an imaging agent for the detection of HCC including early diagnosis and monitoring for recurrence following surgical resection. Thi...

  • Article
  • Open Access
11 Citations
4,946 Views
25 Pages

Radiation-Free Microwave Technology for Breast Lesion Detection Using Supervised Machine Learning Model

  • Soumya Prakash Rana,
  • Maitreyee Dey,
  • Riccardo Loretoni,
  • Michele Duranti,
  • Mohammad Ghavami,
  • Sandra Dudley and
  • Gianluigi Tiberi

12 January 2023

Mammography is the gold standard technology for breast screening, which has been demonstrated through different randomized controlled trials to reduce breast cancer mortality. However, mammography has limitations and potential harms, such as the use...

  • Article
  • Open Access
3 Citations
3,775 Views
7 Pages

The Relationship between the Contouring Time of the Metal Artifacts Area and Metal Artifacts in Head and Neck Radiotherapy

  • Kouji Katsura,
  • Satoshi Tanabe,
  • Hisashi Nakano,
  • Madoka Sakai,
  • Atsushi Ohta,
  • Motoki Kaidu,
  • Marie Soga,
  • Taichi Kobayashi,
  • Masaki Takamura and
  • Takafumi Hayashi

11 January 2023

(1) Background: The impacts of metal artifacts (MAs) on the contouring workload for head and neck radiotherapy have not yet been clarified. Therefore, this study evaluated the relationship between the contouring time of the MAs area and MAs on head a...

  • Article
  • Open Access
4 Citations
3,034 Views
9 Pages

Multilesion Segmentations in Patients with Intracerebral Hemorrhage: Reliability of ICH, IVH and PHE Masks

  • Estelle Vogt,
  • Ly Huong Vu,
  • Haoyin Cao,
  • Anna Speth,
  • Dmitriy Desser,
  • Frieder Schlunk,
  • Andrea Dell’Orco and
  • Jawed Nawabi

11 January 2023

Background and Purpose: Fully automated methods for segmentation and volume quantification of intraparenchymal hemorrhage (ICH), intraventricular hemorrhage extension (IVH), and perihematomal edema (PHE) are gaining increasing interest. Yet, reliabil...

  • Article
  • Open Access
3 Citations
2,270 Views
19 Pages

Measurement of Charge and Refractive Indices in Optically Trapped and Ionized Living Cells

  • Endris Muhammed,
  • Daniel B. Erenso,
  • Ying Gao,
  • Li Chen,
  • Michele Kelley,
  • Carina Vazquez,
  • Mitchell Gale,
  • Cody Nichols and
  • Horace T. Crogman

29 December 2022

The post-ionization dynamics of chemo-treated and untreated 4T1 breast cancer cells ionized by laser trapping techniques are studied. We have determined each cell’s charge and refractive index by developing a theoretical model for the forces de...

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Tomography - ISSN 2379-139X