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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)

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Article

3 Citations

4,766 Views

10 Pages

Whole-Neck Non-Contrast-Enhanced MR Angiography Using Velocity Selective Magnetization Preparation

Chan Joo Park,
Seung Hong Choi,
Jaeseok Park and
Taehoon Shin

Tomography2023, 9(1), 60-69;https://doi.org/10.3390/tomography9010006

29 December 2022

This study aimed to optimize velocity-selective magnetic resonance angiography (VS-MRA) protocols for whole-neck angiography and demonstrate its feasibility in healthy subjects with comparisons to clinical 3D time-of-flight (TOF) angiography. To help...

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Article

7 Citations

4,403 Views

10 Pages

Stereotactic Microwave Ablation of Hepatocellular Carcinoma: The Impact of Tumor Size and Minimal Ablative Margin on Therapeutic Success

Antonia-Maria Pausch,
Tamam Ghali,
Tobias Wertheimer,
Florian Zeman,
Karolina Mueller,
Michael Christian Doppler,
Ingo Einspieler,
Lukas Philipp Beyer,
Stephan Schleder and
Christian Stroszczynski
+ 1 author

Tomography2023, 9(1), 50-59;https://doi.org/10.3390/tomography9010005

26 December 2022

Background: Microwave ablation (MWA) has gained relevance in the treatment of hepatic malignancies and especially in hepatocellular carcinoma (HCC), and it is an important alternative to surgery. The purpose of the study was to evaluate whether the m...

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Article

2 Citations

2,578 Views

14 Pages

Myocardial Contractility Pattern Characterization in Radiation-Induced Cardiotoxicity Using Magnetic Resonance Imaging: A Pilot Study with ContractiX

El-Sayed H. Ibrahim,
Antonio Sosa,
Sherry-Ann Brown,
Dayeong An,
Slade Klawikowski,
John Baker and
Carmen Bergom

Tomography2023, 9(1), 36-49;https://doi.org/10.3390/tomography9010004

22 December 2022

Radiation therapy (RT) plays an integral role in treating thoracic cancers, despite the risk of radiation-induced cardiotoxicity. We hypothesize that our newly developed magnetic resonance imaging (MRI)-based contractility index (ContractiX) is a sen...

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Article

3 Citations

3,534 Views

11 Pages

Feasibility of Early Evaluation for the Recurrence of Bladder Cancer after Trans-Urethral Resection: A Comparison between Magnetic Resonance Imaging and Multidetector Computed Tomography

Yiqian Wang,
Wei Zhang,
Weixiong Xiao,
Shaobin Chen,
Yongbao Wei and
Min Luo

Tomography2023, 9(1), 25-35;https://doi.org/10.3390/tomography9010003

22 December 2022

(1) Background: This study investigates the early evaluation value of magnetic resonance imaging (MRI) and multidetector computed tomography (MDCT) in diagnosing the recurrence of bladder cancer (BC) after trans-urethral resection (TUR) alone or comb...

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Article

4,773 Views

13 Pages

Reduction in Radiation Exposure in Minimally Invasive Pedicle Screw Placement Using a Tubular Retractor: A Pilot Study

Takeshi Oki,
Alan Kawarai Lefor,
Kentaro Nakamura,
Takahiro Higashi and
Isao Oki

Tomography2023, 9(1), 12-24;https://doi.org/10.3390/tomography9010002

20 December 2022

Background and Objectives: Percutaneous pedicle screw (PPS) placement is a minimally invasive spinal procedure that has been rapidly adopted over the last decade. However, PPS placement has elicited fear of increased radiation exposure from some surg...

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Article

7 Citations

4,602 Views

11 Pages

Predicting Underestimation of Invasive Cancer in Patients with Core-Needle-Biopsy-Diagnosed Ductal Carcinoma In Situ Using Deep Learning Algorithms

Luu-Ngoc Do,
Hyo-Jae Lee,
Chaeyeong Im,
Jae Hyeok Park,
Hyo Soon Lim and
Ilwoo Park

Tomography2023, 9(1), 1-11;https://doi.org/10.3390/tomography9010001

20 December 2022

The prediction of an occult invasive component in ductal carcinoma in situ (DCIS) before surgery is of clinical importance because the treatment strategies are different between pure DCIS without invasive component and upgraded DCIS. We demonstrated...

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