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Journals Journal of Computer Assisted T...

Journal of Computer Assisted Tomography

https://read.qxmd.com/read/38968327/volumetric-analysis-effect-on-diagnosis-and-management-of-indeterminate-solid-pulmonary-nodules-in-routine-clinical-practice
#1
JOURNAL ARTICLE
Robert S Lim, Jarrett Rosenberg, Martin J Willemink, Sarah N Cheng, Henry H Guo, Philip D Hollett, Margaret C Lin, Mohammad H Madani, Lynne Martin, Brian P Pogatchnik, Michael Pohlen, Jody Shen, Emily B Tsai, Gerald J Berry, Gregory Scott, Ann N Leung
OBJECTIVE: To evaluate the effect of volumetric analysis on the diagnosis and management of indeterminate solid pulmonary nodules in routine clinical practice. METHODS: This was a retrospective study with 107 computed tomography (CT) cases of solid pulmonary nodules (range, 6-15 mm), 57 pathology-proven malignancies (lung cancer, n = 34; metastasis, n = 23), and 50 benign nodules. Nodules were evaluated on a total of 309 CT scans (average number of CTs/nodule, 2...
July 5, 2024: Journal of Computer Assisted Tomography
https://read.qxmd.com/read/38968317/performance-of-o-rads-mri-score-in-differentiating-benign-from-malignant-ovarian-teratomas-mr-feature-analysis-for-differentiating-o-rads-4-from-o-rads-2
#2
JOURNAL ARTICLE
Robert Petrocelli, Ankur Doshi, Chrystia Slywotzky, Marissa Savino, Kira Melamud, Angela Tong, Nicole Hindman
OBJECTIVE: The aim of the study is to evaluate the performance of the ovarian-adnexal reporting and data system magnetic resonance imaging (O-RADS MRI) score and perform individual MRI feature analysis for differentiating between benign and malignant ovarian teratomas. METHODS: In this institutional review board-approved retrospective study, consecutive patients with a pathology-proven fat-containing ovarian mass imaged with contrast-enhanced MRI (1.5T or 3T) from 2013 to 2022 were included...
July 5, 2024: Journal of Computer Assisted Tomography
https://read.qxmd.com/read/38968316/radiogenomics-of-intrahepatic-cholangiocarcinoma-correlation-of-imaging-features-with-bap1-and-fgfr-molecular-subtypes
#3
JOURNAL ARTICLE
Veronica Cox, Milind Javle, Jia Sun, Hyunseon Kang
PURPOSE: Clinical research has shown unique tumor behavioral characteristics of BRCA-associated protein-1- (BAP1-) and fibroblast growth factor receptor (FGFR)-mutated intrahepatic cholangiocarcinomas (CCAs), with BAP1-mutated tumors demonstrating more aggressive forms of disease and FGFR-altered CCAs showing more indolent behavior. We performed a retrospective case-control study to evaluate for unique imaging features associated with BAP1 and FGFR genomic markers in intrahepatic CCA (iCCA)...
July 5, 2024: Journal of Computer Assisted Tomography
https://read.qxmd.com/read/38924426/predicting-outcome-of-patients-with-cerebral-hemorrhage-using-a-computed-tomography-based-interpretable-radiomics-model-a-multicenter-study
#4
JOURNAL ARTICLE
Yun-Feng Yang, Hao Zhang, Xue-Lin Song, Chao Yang, Hai-Jian Hu, Tian-Shu Fang, Zi-Hao Zhang, Xia Zhu, Yuan-Yuan Yang
OBJECTIVE: The aim of this study was to develop and validate an interpretable and highly generalizable multimodal radiomics model for predicting the prognosis of patients with cerebral hemorrhage. METHODS: This retrospective study involved 237 patients with cerebral hemorrhage from 3 medical centers, of which a training cohort of 186 patients (medical center 1) was selected and 51 patients from medical center 2 and medical center 3 were used as an external testing cohort...
June 25, 2024: Journal of Computer Assisted Tomography
https://read.qxmd.com/read/38924418/effect-of-model-based-iterative-reconstruction-on-image-quality-of-chest-computed-tomography-for-covid-19-pneumonia
#5
JOURNAL ARTICLE
Caiyin Liu, Junkun Lin, Yingjie Chen, Yingfeng Hu, Ruzhen Wu, Xuejun Lin, Rulin Xu, Zhiping Zhong
PURPOSE: This study aimed to compare the image quality of chest computed tomography (CT) scans for COVID-19 pneumonia using forward-projected model-based iterative reconstruction solution-LUNG (FIRST-LUNG) with filtered back projection (FBP) and hybrid iterative reconstruction (HIR). METHOD: The CT images of 44 inpatients diagnosed with COVID-19 pneumonia between December 2022 and June 2023 were retrospectively analyzed. The CT images were reconstructed using FBP, HIR, and FIRST-LUNG-MILD/STANDARD/STRONG...
June 25, 2024: Journal of Computer Assisted Tomography
https://read.qxmd.com/read/38924393/can-machine-learning-models-based-on-computed-tomography-radiomics-and-clinical-characteristics-provide-diagnostic-value-for-epstein-barr-virus-associated-gastric-cancer
#6
JOURNAL ARTICLE
Ruilong Zong, Xijuan Ma, Yibing Shi, Li Geng
OBJECTIVE: The aim of this study was to explore whether machine learning model based on computed tomography (CT) radiomics and clinical characteristics can differentiate Epstein-Barr virus-associated gastric cancer (EBVaGC) from non-EBVaGC. METHODS: Contrast-enhanced CT images were collected from 158 patients with GC (46 EBV-positive, 112 EBV-negative) between April 2018 and February 2023. Radiomics features were extracted from the volumes of interest. A radiomics signature was built based on radiomics features by the least absolute shrinkage and selection operator logistic regression algorithm...
June 25, 2024: Journal of Computer Assisted Tomography
https://read.qxmd.com/read/38896760/vendor-specific-correction-software-for-apparent-diffusion-coefficient-bias-due-to-gradient-nonlinearity-in-breast-diffusion-weighted-imaging-using-ice-water-phantom
#7
JOURNAL ARTICLE
Tsukasa Yoshida, Atsushi Urikura, Masahiro Endo
OBJECTIVE: This study aimed to evaluate a vendor-specific correction software for apparent diffusion coefficient (ADC) bias due to gradient nonlinearity in breast diffusion-weighted magnetic resonance imaging using an ice-water phantom. METHODS: The phantom consists of 5 plastic tubes with a length of 100 mm and a diameter of 15 mm, filled with distilled water and immersed in an ice-water bath. Diffusion-weighted images were acquired by echo-planar imaging sequence on a 3...
June 18, 2024: Journal of Computer Assisted Tomography
https://read.qxmd.com/read/38896759/lowering-platelet-threshold-to-20-000-%C3%AE-l-for-fluoroscopy-guided-lumbar-puncture-does-not-result-in-observed-clinical-adverse-outcomes
#8
JOURNAL ARTICLE
Ukasha Habib, Karen Buch, William A Mehan
PURPOSE: Fluoroscopic-guided lumbar puncture (FG-LP) is a common neuroradiologic procedure. Traditionally, a minimum platelet count (MPC) of 50,000/μL for this procedure has been required; however, we recently adopted a lower MPC threshold of 20,000/μL. The purpose of this study was to compare adverse events in patients undergoing FG-LP with MPCs above to those below the conventional 50,000/μL threshold. MATERIALS: This was an institutional review board-approved, retrospective study on adult patients with hematologic malignancy undergoing FG-LP in the neuroradiology division between May 2021 and December 2022, after lowering the minimal required MPC to 20,000/μL...
June 18, 2024: Journal of Computer Assisted Tomography
https://read.qxmd.com/read/38858799/computed-tomography-derived-extracellular-volume-fraction-and-splenic-size-for-liver-fibrosis-staging
#9
JOURNAL ARTICLE
Numan Kutaiba, Anthony Tran, Saad Ashraf, Danny Con, Julie Lokan, Mark Goodwin, Adam Testro, Gary Egan, Ruth Lim
OBJECTIVE: Extracellular volume fraction (fECV) and liver and spleen size have been correlated with liver fibrosis stages and cirrhosis. The purpose of the current study was to determine the predictive value of fECV alone and in conjunction with measurement of liver and spleen size for severity of liver fibrosis. METHODS: This was a retrospective study of 95 subjects (65 with liver biopsy and 30 controls). Spearman rank correlation coefficient was used to assess correlation between radiological markers and fibrosis stage...
June 3, 2024: Journal of Computer Assisted Tomography
https://read.qxmd.com/read/38834938/imaging-review-of-different-subchondral-insufficiency-fractures
#10
JOURNAL ARTICLE
Sameer Alidina, Dylan Luxenburg, Athena Castro, Ty K Subhawong, Felipe Ferreira de Souza
Subchondral fractures are a common cause of joint pain that may ultimately lead to articular collapse and the need for arthroplasty. This type of fracture has been reported at multiple joints throughout the body. While clinical and radiographic resolution can be achieved, progressive bone collapse can occur and lead to a variety of complications. Understanding the pertinent imaging findings can aid in the early evaluation of subchondral fractures and in the prevention of their associated complications.
June 3, 2024: Journal of Computer Assisted Tomography
https://read.qxmd.com/read/38870324/simultaneous-injection-of-contrast-and-saline-using-spiral-flow-generating-tube-for-hepatic-dynamic-computed-tomography-effect-on-enhancement-of-liver-parenchyma-and-metastases-to-the-liver
#11
JOURNAL ARTICLE
Hiroji Nagata, Hisako Iori, Shiori Yoshida, Hiroki Kawashima, Yuka Nishino, Ryo Sakasai, Hiroshi Yamamura, Tetsuya Minami
PURPOSE: Recently, there have been a few reports regarding the usefulness of a novel saline injection technique using a spiral flow-generating tube. The purpose of this study was to evaluate whether simultaneous saline injection using a spiral flow-generating tube was able to improve hepatic contrast enhancement and lesion conspicuity of metastatic liver tumors. METHODS: We randomized a total of 411 patients with various liver diseases including metastases by total body weight (A, n = 204) and contrast dilution protocol (B, n = 207)...
May 28, 2024: Journal of Computer Assisted Tomography
https://read.qxmd.com/read/38718419/a-novel-approach-to-detecting-contrast-extravasation-in-computed-tomography-evaluating-the-injection-pressure-to-injection-rate-ratio
#12
JOURNAL ARTICLE
Naoki Kobayashi, Takeshi Nakaura, Kaori Shiraishi, Hiroyuki Uetani, Yasunori Nagayama, Masafumi Kidoh, Seitaro Oda, Daisuke Sakabe, Ryuji Ikeda, Masahiro Hatemura, Michiyo Murakami, Yoshinori Funama, Toshinori Hirai
OBJECTIVE: The purpose of this study was to evaluate the usefulness of the injection pressure-to-injection rate (IPIR) ratio for the early detection of contrast extravasation at the venipuncture site during contrast-enhanced computed tomography. METHODS: We retrospectively enrolled 57,528 patients who underwent contrast-enhanced computed tomography examinations in a single hospital. The power injector recorded the contrast injection pressure at 0.25-second intervals...
May 9, 2024: Journal of Computer Assisted Tomography
https://read.qxmd.com/read/38722777/accelerated-diffusion-weighted-magnetic-resonance-imaging-of-the-liver-at-1-5-t-with-deep-learning-based-image-reconstruction-impact-on-image-quality-and-lesion-detection
#13
JOURNAL ARTICLE
Luke A Ginocchio, Sonam Jaglan, Angela Tong, Paul N Smereka, Thomas Benkert, Hersh Chandarana, Krishna P Shanbhogue
OBJECTIVE: To perform image quality comparison between deep learning-based multiband diffusion-weighted sequence (DL-mb-DWI), accelerated multiband diffusion-weighted sequence (accelerated mb-DWI), and conventional multiband diffusion-weighted sequence (conventional mb-DWI) in patients undergoing clinical liver magnetic resonance imaging (MRI). METHODS: Fifty consecutive patients who underwent clinical MRI of the liver at a 1.5-T scanner, between September 1, 2021, and January 31, 2022, were included in this study...
May 6, 2024: Journal of Computer Assisted Tomography
https://read.qxmd.com/read/38693083/respiratory-displacement-of-the-right-adrenal-vein-comparison-of-inspiratory-and-expiratory-computed-tomography-with-catheter-venography
#14
JOURNAL ARTICLE
Junko Hara, Shiro Ishii, Hayato Tanabe, Ryo Yamakuni, Hiroki Suenaga, Teruyuki Kono, Daichi Kuroiwa, Hirofumi Sekino, Michio Shimabukuro, Hiroshi Ito
OBJECTIVE: The aim of the study is to reveal the respiratory displacement of the right adrenal vein (RAV) to predict the exact location of the RAV during adrenal venous sampling (AVS). METHODS: Computed tomography (CT) scans obtained 45 seconds (breath-hold at inhalation) and 70 seconds (breath-hold at exhalation) after contrast material injection were compared to venograms of the RAV of patients with primary aldosteronism who underwent AVS between January 2016 and December 2020...
May 2, 2024: Journal of Computer Assisted Tomography
https://read.qxmd.com/read/38693081/feasibility-analysis-of-individualized-low-flow-rate-abdominal-contrast-enhanced-computed-tomography-in-chemotherapy-patients-dual-source-computed-tomography-with-low-tube-voltage
#15
JOURNAL ARTICLE
Yicun Zhang, Dian Yuan, Ke Qi, Mengyuan Zhang, Weiting Zhang, Nannan Wei, Linfeng Li, Peijie Lv, Jianbo Gao, Jie Liu
PURPOSE: The aim of the study is to investigate the feasibility of using dual-source computed tomography (CT) combined with low flow rate and low tube voltage for postchemotherapy image assessment in cancer patients. METHODS: Ninety patients undergoing contrast-enhanced CT scans of the upper abdomen were prospectively enrolled and randomly assigned to groups A, B, and C (n = 30 each). In group A, patients underwent scans at 120 kVp with 448 mgI/kg. Patients in group B underwent scans at 100 kVp with 336 mgI/kg...
May 2, 2024: Journal of Computer Assisted Tomography
https://read.qxmd.com/read/38693079/imaging-diagnosis-of-thoracic-elastofibroma-dorsi
#16
JOURNAL ARTICLE
Yeli Pi, Mark M Hammer
OBJECTIVE: Elastofibroma dorsi (ED) is an uncommon benign tumor that is commonly incidentally discovered on thoracic imaging and at times misinterpreted as a more aggressive lesion. The objective of the study is to characterize the typical cross-sectional imaging findings of elastofibroma dorsi and quantify the risk of masquerading malignancy. METHODS: Retrospective search of radiology and pathology reports over a 12-year period identified 409 cases of suspected ED...
May 2, 2024: Journal of Computer Assisted Tomography
https://read.qxmd.com/read/38693071/development-of-the-split-bolus-pulmonary-arteriovenous-separating-computed-tomography-angiography-protocol-based-on-time-enhancement-curve-for-lung-cancer-surgery
#17
JOURNAL ARTICLE
Masato Kiriki, Masashi Koizumi, Katsuhiko Maeda, Toshiyuki Sakai, Noriko Kotoura
OBJECTIVE: We devised a split-bolus injection and imaging protocol for pulmonary artery and vein separation computed tomography (CT) angiography based on time enhancement curve characterization. Furthermore, we aimed to evaluate the contrast enhancement effect and success rate of blood vessel separation between the pulmonary artery and vein of this proposed protocol. METHODS: In this study, 102 patients (45 patients with the standard protocol and 57 patients with the proposed protocol) who underwent pulmonary arteriovenous computed tomography angiography were included...
May 2, 2024: Journal of Computer Assisted Tomography
https://read.qxmd.com/read/38693063/pre-coronary-artery-bypass-grafting-computed-tomography-based-fractional-flow-reserve-predicts-graft-failure-implications-for-planning-invasive-treatment-of-coronary-artery-disease
#18
JOURNAL ARTICLE
Łukasz Wardziak, Mariusz Kruk, Marcin Demkow, Cezary Kępka
OBJECTIVE: The aim of the study is to evaluate whether a pre-coronary artery bypass grafting (CABG) coronary computed tomography-based fractional flow reserve (FFR-CT) result at the site of a future anastomosis would predict the graft failure in patients undergoing CABG. METHODS: In 43 patients who had coronary computed tomography angiography (CCTA) prior to the CABG, follow-up CCTA were acquired >12 months post-CABG procedure. The FFR-CT values were simulated on the basis of the pre-CABG CCTA...
May 2, 2024: Journal of Computer Assisted Tomography
https://read.qxmd.com/read/38663025/development-of-a-better-nomogram-for-prediction-of-preoperative-microvascular-invasion-and-postoperative-prognosis-in-hepatocellular-carcinoma-patients-a-comparison-study
#19
JOURNAL ARTICLE
Jinxia Pei, Longsheng Wang, Huan Li
OBJECTIVE: Personalized precision medicine can be facilitated by clinically available preoperative microvascular invasion (MVI) prediction models that are reliable and postoperative MVI pathological grade-related recurrence prediction models that are accurate. In this study, we aimed to compare different mathematical models to derive the best preoperative prediction and postoperative recurrence prediction models for MVI. METHODS: A total of 143 patients with hepatocellular carcinoma (HCC) whose clinical, laboratory, imaging, and pathological data were available were included in the analysis...
April 26, 2024: Journal of Computer Assisted Tomography
https://read.qxmd.com/read/38657159/dual-energy-computed-tomography-virtual-noncalcium-imaging-of-intracranial-arteries-in-acute-ischemic-stroke-differentiation-between-acute-thrombus-and-calcification
#20
JOURNAL ARTICLE
Yuki Shinohara, Tomomi Ohmura, Fumiaki Sasaki, Yuichiro Sato, Takato Inomata, Toshihide Itoh, Toshibumi Kinoshita
OBJECTIVE: Hyperdense artery sign (HAS) on noncontrast brain computed tomography (CT) indicates an acute thrombus within the cerebral artery. It is a valuable imaging biomarker for diagnosing large-vessel occlusion; however, its identification may be challenging with the presence of vascular calcification. Dual-energy CT virtual noncalcium (VNCa) imaging using a 3-material decomposition algorithm is helpful for differentiating between calcification and hemorrhage. This study aimed to clarify the potential of VNCa imaging for differentiating HAS from vascular calcification...
April 24, 2024: Journal of Computer Assisted Tomography
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