Radiology, Nuclear Medicine & Medical Imaging

Article Acoustics

S-Wave Accelerates Optimization-based Photoacoustic Image Reconstruction in vivo

Yuting Shen, Jiadong Zhang, Daohuai Jiang, Zijian Gao, Yuwei Zheng, Feng Gao, Fei Gao

Summary: This study proposes a straightforward simulation approach based on superposed Wave (s-Wave) to accelerate photoacoustic simulation. By manipulating the phase and amplitude of sensor data, the computation time is significantly reduced. The results show that s-Wave exhibits a speed improvement >2000 times compared with k-Wave in a sparse system configuration, and in terms of optimization-based image reconstruction, the reconstruction time is reduced by approximately 50 times.

ULTRASOUND IN MEDICINE AND BIOLOGY (2024)

Article Acoustics

Automated 2-D and 3-D Left Atrial Volume Measurements Using Deep Learning

Jieyu Hu, Sindre Hellum Olaisen, Erik Smistad, Havard Dalen, Lasse Lovstakken

Summary: This study introduces a fully automated, real-time method for measuring left atrial volume in echocardiography using a neural network to identify key time points and segmentation techniques. The results show that this method provides comparable accuracy to manual measurements while saving time and reducing operator variability, with an average volume difference of 2.9 mL for 2-D and 7.8 mL for 3-D imaging. The application of pseudo-labeling improves the stability of volume curves and the accuracy of end-systole measurement.

ULTRASOUND IN MEDICINE AND BIOLOGY (2024)

Article Acoustics

Polyvinyl Alcohol Phantoms With Heterogeneous Plaques: Estimation of Pulse Wave Velocity at the Stenotic Region Using Pulse Wave Imaging

Nima Mobadersany, Pengcheng Liang, Paul Kemper, Elisa E. Konofagou

Summary: This study describes a technique for manufacturing arterial phantoms using polyvinyl alcohol and evaluates the use of pulse wave imaging (PWI) to assess plaque stiffness. The results show that PWI can distinguish between plaques of different stiffness and composition.

ULTRASOUND IN MEDICINE AND BIOLOGY (2024)

Article Computer Science, Artificial Intelligence

Automatic registration with continuous pose updates for marker-less surgical navigation in spine surgery

Florentin Liebmann, Marco von Atzigen, Dominik Stutz, Julian Wolf, Lukas Zingg, Daniel Suter, Nicola A. Cavalcanti, Laura Leoty, Hooman Esfandiari, Jess G. Snedeker, Martin R. Oswald, Marc Pollefeys, Mazda Farshad, Philipp Furnstahl

Summary: This study presents a marker-less approach for automatic registration and real-time navigation of lumbar spinal fusion surgery using a deep neural network, avoiding radiation exposure and surgical errors. The method was validated on an ex-vivo surgery and a public dataset.

MEDICAL IMAGE ANALYSIS (2024)

Article Radiology, Nuclear Medicine & Medical Imaging

Common femoral arterial access and arteriography in infants: Principles, pearls, and pitfalls

A. Sailer, K. Fitzgerald, J. F. B. Chick, D. S. Shin, E. J. Monroe

Summary: This manuscript describes an approach to successful common femoral arterial access and arteriography in infants, highlighting common pearls and pitfalls.

CLINICAL IMAGING (2024)

Article Radiology, Nuclear Medicine & Medical Imaging

Imaging of the hepatic arterial infusion pump: Primer for radiologists

Apurva Bonde, Alice W. Fung, Skye C. Mayo, Peter Li, Brett S. Walker, Sriram Jaganathan, Nadine Mallak, Elena K. Korngold

Summary: Hepatic arterial infusion pumps allow selective administration of chemotherapy to the liver, maximizing its effects while minimizing systemic toxicity. Radiologists play a crucial role in pre-operative planning, treatment response assessment, and evaluation of potential complications. This article aims to familiarize radiologists with various aspects of HAI pumps.

CLINICAL IMAGING (2024)

Article Radiology, Nuclear Medicine & Medical Imaging

Metabolic tumor volume and sites of organ involvement predict outcome in NSCLC immune-checkpoint inhibitor therapy

Daria Kifjak, Maximilian Hochmair, Daniel Sobotka, Alexander R. Haug, Raphael Ambros, Florian Prayer, Benedikt H. Heidinger, Sebastian Roehrich, Ruxandra-Iulia Milos, Wolfgang Wadsak, Thorsten Fuereder, Dagmar Krenbek, Andreas Fazekas, Michael Meilinger, Marius E. Mayerhoefer, Georg Langs, Christian Herold, Helmut Prosch, Lucian Beer

Summary: The ability of pretreatment PET parameters and peripheral blood biomarkers to predict PFS and OS in NSCLC patients treated with ICIT was assessed. The study found that MTV and the number of SOI were independent risk factors for progression and overall survival, and the combination of these factors improved risk stratification.

EUROPEAN JOURNAL OF RADIOLOGY (2024)

Article Radiology, Nuclear Medicine & Medical Imaging

Whole tumor based texture analysis of magnetic resonance diffusion imaging for colorectal liver metastases: A prospective study for diffusion model comparison and early response biomarker

Yue Li, Huan Zhang, Lei Yue, Caixia Fu, Robert Grimm, Wenhua Li, Weijian Guo, Tong Tong

Summary: This study evaluated and compared the diagnostic value of diffusion-related texture analysis parameters from different magnetic resonance diffusion models in predicting the clinical response to chemotherapy in patients with colorectal liver metastases. Among the models, DKI-derived parameters showed the best performance for early prediction, followed by IVIM-derived parameters and DWI baseline features.

EUROPEAN JOURNAL OF RADIOLOGY (2024)

Article Oncology

Nine years of plan of the day for cervical cancer: Plan library remains effective compared to fully online-adaptive techniques

Dominique Reijtenbagh, Jeremy Godart, Joan Penninkhof, Sandra Quint, Andras Zolnay, Jan-Willem Mens, Mischa Hoogeman

Summary: This study compared the performance of the current PotD strategy with non-adaptive and fully online-adaptive techniques in the treatment of cervical cancer patients. The findings show that the PotD protocol is effective in improving normal tissue sparing compared to no adaptation, while fully online-adaptive approaches can further reduce target volume but come with a more complex workflow.

RADIOTHERAPY AND ONCOLOGY (2024)

Review Radiology, Nuclear Medicine & Medical Imaging

Harnessing the benefits of ChatGPT for radiography education: A discussion paper

C. Amedu, B. Ohene-Botwe

Summary: This paper explores the potential of integrating ChatGPT, an advanced conversational AI language model, into radiography education, highlighting its benefits in improving graduate outcomes and digital literacy for students. However, issues related to academic integrity and privacy, as well as the opportunities and challenges presented by this new technology, need to be carefully considered.

RADIOGRAPHY (2024)

Article Radiology, Nuclear Medicine & Medical Imaging

Imaging characteristics and ECG distribution of coronary fistulas: The first large-scale study

Renhui Cai, Juan Xu, Chaoqun Yan, Jie Wang, L. I. Wang, Leizhi Ku, Di Zhou, L. I. Zhu, Chunli He, Xinxiang Zhao, Xiaojing Ma

Summary: This paper analyzes the correlation between imaging features and ECG features in patients with coronary artery fistula (CAF). The study finds significant differences in ECG characteristics between coronary-cameral fistula (CCF) and coronary-pulmonary artery fistula (CPAF). Surgical treatment can improve ECG findings in some patients.

CLINICAL IMAGING (2024)

Article Radiology, Nuclear Medicine & Medical Imaging

'Gear up and get ready': Collaborative curriculum for radiographers supporting percutaneous nephrolithotomy in the operating theatre

Y. X. Tay, G. Y. H. Ng, M. Xue, C. X. Y. Lim, C. -w. Hsiao, Y. -m. Wei, C. c. -p. Ong

Summary: Newly qualified radiographers often face challenges and intimidation in the operating theatre. A collaborative education programme using simulation and assessment checklists proved to be effective in improving their competency and performance.

RADIOGRAPHY (2024)

Article Computer Science, Artificial Intelligence

CenTime: Event-conditional modelling of censoring in survival analysis

Ahmed H. Shahin, An Zhao, Alexander C. Whitehead, Daniel C. Alexander, Joseph Jacob, David Barber

Summary: Survival analysis is a valuable tool in healthcare for predicting the time to specific events. This paper introduces CenTime, a novel approach that directly estimates the time to event. The method performs well with censored data and can be easily integrated with deep learning models. Compared to standard methods, CenTime offers superior performance in predicting event time while maintaining comparable ranking performance.

MEDICAL IMAGE ANALYSIS (2024)

Article Oncology

Real-time motion management in MRI-guided radiotherapy: Current status and AI-enabled prospects

Elia Lombardo, Jennifer Dhont, Denis Page, Cristina Garibaldi, Luise A. Kuenzel, Coen Hurkmans, Rob H. N. Tijssen, Chiara Paganelli, Paul Z. Y. Liu, Paul J. Keall, Marco Riboldi, Christopher Kurz, Guillaume Landry, Davide Cusumano, Marco Fusella, Lorenzo Placidi

Summary: This paper describes the steps and available solutions for intra-fractional motion management in MRIgRT, and proposes a 3D compensation method for motion-induced over- or under-dosage with minimal impact on radiotherapy treatment time. Artificial intelligence is emphasized as a fast and accurate alternative to conventional algorithms.

RADIOTHERAPY AND ONCOLOGY (2024)

Article Oncology

Pilot applications of GPT-4 in radiation oncology: Summarizing patient symptom intake and targeted chatbot applications

David J. H. Wu, Jean-Emmanuel Bibault

Summary: This study examines the use of GPT-4 in monitoring radiation toxicity during prostate cancer treatments. Two methods, summarization and chatbot interface, were tested. Radiation oncologists surveyed preferred the summarization method for its accuracy and potential for adoption, and both methods saved time.

RADIOTHERAPY AND ONCOLOGY (2024)

Article Oncology

A feasibility trial of skin surface motion-gated stereotactic body radiotherapy for treatment of upper abdominal or lower thoracic targets using a novel O-ring gantry

Kendall Kiser, Joshua Schiff, Eric Laugeman, Taeho Kim, Olga Green, Casey Hatscher, Hyun Kim, Shahed Badiyan, Matthew Spraker, Pamela Samson, Clifford Robinson, Alex Price, Lauren Henke

Summary: This study evaluated the feasibility of optical skin surface-guided gating for SBRT treatment, achieving successful breath-hold in 92% of treatments. After three months, no local recurrences or acute grade >= 3 toxicities were observed.

CLINICAL AND TRANSLATIONAL RADIATION ONCOLOGY (2024)

Article Radiology, Nuclear Medicine & Medical Imaging

The effect of inappropriate patient centring on CT numbers and radiation dose: A survey of current practices and knowledge

Y. Al-Hayek, K. Spuur, R. Davidson, C. Hayre, G. Currie, X. Zheng

Summary: This study reports on the current practice and knowledge accuracy of Australian radiographers regarding inappropriate patient centring during CT. The results show inconsistent practices and knowledge gaps among radiographers, highlighting the importance of continuous professional development programs to improve patient positioning accuracy and dose management.

RADIOGRAPHY (2024)

Article Oncology

Meta-analysis of 5-day preoperative radiotherapy for soft tissue sarcoma (5D-PREORTS)

Fabio L. Cury, Gustavo A. Viani, Andre G. Gouveia, Camila V. S. Freire, Gabriel de A. Grisi, Fabio Y. Moraes

Summary: In limb-sparing treatment of soft tissue sarcoma patients, a 5-day course of preoperative radiotherapy results in high local control and favorable R0 margins, with acceptable complication rates, particularly for patients receiving higher biological equivalent doses.

RADIOTHERAPY AND ONCOLOGY (2024)

Article Chemistry, Inorganic & Nuclear

On the accuracy of cross-section measurements of neutron-induced reactions using the activation technique with natural targets: The case of Ge at En=17.9 MeV

S. Chasapoglou, M. Kokkoris, R. Vlastou, M. Diakaki, V. Michalopoulou, A. Kalamara, G. Gkatis, A. Stamatopoulos, M. Axiotis, S. Harissopulos, A. Lagoyannis, M. I. Savva, T. Vasilopoulou, C. Lederer-Woods, N. Patronis, K. Kaperoni

Summary: This study investigated the accuracy and limitations of theoretical corrections in neutron-induced reactions on isotopically enriched Ge targets. Experimental cross-section measurements were conducted on several reactions using Ge-nat and isotopically enriched Ge targets. The results showed that the methodology using isotopically enriched targets provided accurate results without the need for theoretical corrections.

APPLIED RADIATION AND ISOTOPES (2024)

Article Radiology, Nuclear Medicine & Medical Imaging

Contemporary Approach to Prostate Imaging and Data Reporting System Score 3 Lesions

Jorge Abreu-Gomez, Christopher Lim, Masoom A. Haider

Summary: PI-RADSv2.1 made important modifications for the assessment of category 3 lesions, with a small impact. The combination of PSAD is the most likely approach to aid in clinical decision making for PI-RADS 3 category. Commercially available fluidic markers are being used to supplement this, but further evidence is needed to improve the accuracy of PI-RADS alone in detecting csPCa.

RADIOLOGIC CLINICS OF NORTH AMERICA (2024)