Article
Medicine, General & Internal
Kyungsoo Bae, Kyung Nyeo Jeon
Summary: The tracheal bronchus is a rare congenital anomaly where an aberrant bronchus arises in either the trachea or a main bronchus. Left bronchial isomerism, characterized by two bilobed lungs and bilateral long main bronchi, is also rare. The combination of left bronchial isomerism and a right-sided tracheal bronchus has not been previously reported. We present the CT findings of this rare case in a 74-year-old male.
Article
Radiology, Nuclear Medicine & Medical Imaging
Sungeun Park, Jeong Hee Yoon, Ijin Joo, Mi Hye Yu, Jae Hyun Kim, Junghoan Park, Se Woo Kim, Seungchul Han, Chulkyun Ahn, Jong Hyo Kim, Jeong Min Lee
Summary: This study compared the overall image quality and lesion detectability between low-dose liver CT and standard-dose CT. The results showed that low-dose CT using deep learning denoising provided comparable overall image quality and lesion detectability to standard-dose CT.
EUROPEAN RADIOLOGY
(2022)
Article
Medicine, General & Internal
Anne-Claire Ortlieb, Aissam Labani, Francois Severac, Mi-Young Jeung, Catherine Roy, Mickael Ohana
Summary: This study assessed the impact of patient's morphotype on image quality and diagnostic performance of Ultra-Low-Dose (ULD) chest CT. It found a negative correlation between Body Mass Index (BMI) and image quality, but no correlation with diagnostic performance, suggesting a potential use of ULD protocol in obese patients.
JOURNAL OF CLINICAL MEDICINE
(2021)
Article
Radiology, Nuclear Medicine & Medical Imaging
Sebastian Tschauner, Michael Zellner, Sarah Pistorius, Ralph Gnannt, Thomas Schraner, Christian J. Kellenberger
Summary: This study compared objective and subjective parameters in image quality and radiation dose of two MDCTs in paediatric lung CT. While MDCT 2 provided higher SNR and CNR, subjective image quality was not significantly different between studies from both scanners. Lower radiation exposure was found in MDCT 2, offering effective radiation dose reduction without compromising image quality.
EUROPEAN JOURNAL OF RADIOLOGY
(2021)
Article
Radiology, Nuclear Medicine & Medical Imaging
Heli Riitta Sinikka Larjava, Chibuzor T. M. Eneh, Hannele M. Niiniviita
Summary: The study aimed to investigate the impact of out-of-plane shield on tube current modulation in chest CT scans. It was found that the out-of-plane shield visible in the localizer images but absent in the scan range may significantly increase patient radiation dose.
EUROPEAN RADIOLOGY
(2023)
Article
Radiology, Nuclear Medicine & Medical Imaging
Siru Kaartinen, Minna Husso, Hanna Matikka
Summary: The study aimed to investigate operator's eye lens doses in typical CT-guided interventions, the correlation between dose length product (DLP) and operator's dose, as well as different methods for estimating eye lens dose in clinical settings. Results showed that eye lens doses were generally low in CT-guided interventions, and can be estimated based on DLP or measured dose at the operator's collar level.
EUROPEAN RADIOLOGY
(2021)
Article
Radiology, Nuclear Medicine & Medical Imaging
Anais Foucault, Sophie Ancelet, Serge Dreuil, Sylvaine Caer-Lorho, Hubert Ducou Le Pointe, Herve Brisse, Jean-Francois Chateil, Choonsik Lee, Klervi Leuraud, Marie-Odile Bernier
Summary: Recent epidemiological studies have reported increased risks of central nervous system (CNS) tumors and leukemia associated with computed tomography (CT) exposure during childhood. However, a previous analysis of the French CT cohort did not provide evidence of increased risks. This study, with an updated cohort and a longer follow-up, confirms the increased risks.
EUROPEAN RADIOLOGY
(2022)
Article
Pediatrics
Jordan B. Rapp, Ammie M. White, Hansel J. Otero, David M. Biko
Summary: In this review, the presence of airway and lung disease in children with congenital heart disease was commonly observed on CT imaging of the chest, focusing on abnormalities beyond the heart and central vasculature. Preoperative and postoperative findings were also discussed in this review.
PEDIATRIC RADIOLOGY
(2022)
Article
Radiology, Nuclear Medicine & Medical Imaging
Rebecca Smith-Bindman, Taewoon Kang, Philip W. Chu, Yifei Wang, Carly Stewart, Marco Das, Phuong-Anh Duong, Luisa Cervantes, Ramit Lamba, Ryan K. Lee, Fiona MacLeod, Nima Kasraie, Rebecca Neill, Pavlina Pike, Jodi Roehm, Sebastian Schindera, Robert Chung, Bradley N. Delman, Cecile R. L. P. N. Jeukens, L. Jay Starkey, Timothy P. Szczykutowicz
Summary: There is significant variation in radiation doses for routine abdomen CT scans regardless of patient size. Optimization techniques are often under-utilized, leading to higher radiation doses than necessary. Proper adjustment of technical parameters and number of phases can result in substantial reduction in radiation exposure.
EUROPEAN RADIOLOGY
(2023)
Article
Radiology, Nuclear Medicine & Medical Imaging
Ji Na Kim, Hee Jin Park, Myung Sub Kim, Shin Ho Kook, Soo Youn Ham, Eugene Kim, Se Jin Park
Summary: This study aimed to compare the image quality of extremities CT scans with low-dose and standard-dose radiation, finding that objective image noise was higher in low-dose CT images of the shoulder and pelvis, leading to decreased subjective image quality. However, in the wrist, both objective image noise and subjective image quality remained similar between low-dose and standard CT scans, and in the ankle, some measurements of image quality were comparable between the two dose regimens.
EUROPEAN JOURNAL OF RADIOLOGY
(2021)
Article
Radiology, Nuclear Medicine & Medical Imaging
Katia Katsari, Hugo Pasquier, Milan Barati, Pilar Pujadas, Rowland O. Illing
Summary: The study aimed to investigate the feasibility of standardizing and optimizing CT protocols within a European healthcare network through the implementation of a Dose Excellence Program. Results showed that after Phase III implementation, mean RS and CTDIvol p(75) were below organizational reference levels for the three protocols in all countries.
EUROPEAN RADIOLOGY
(2021)
Article
Radiology, Nuclear Medicine & Medical Imaging
Leening P. Liu, Nadav Shapira, Andrew A. Chen, Russell T. Shinohara, Pooyan Sahbaee, Mitchell Schnall, Harold Litt, Peter B. Noel
Summary: This study compared the image characteristics of a first-generation dual-source photon-counting computed tomography (PCCT) and a dual-source dual-energy CT (DECT) scanner at ultra-low radiation dose levels. The results showed that PCCT had high precision in Hounsfield unit (HU) measurements at various radiation dose levels, outperforming DECT at low doses and significantly reducing electronic background noise.
EUROPEAN RADIOLOGY
(2022)
Article
Radiology, Nuclear Medicine & Medical Imaging
Yifei Wang, Philip Chu, Timothy P. Szczykutowicz, Carly Stewart, Rebecca Smith-Bindman
Summary: This study quantifies the relationship between CT acquisition parameters and radiation dose, assesses their variation in practice, and identifies the impactful parameters. The results show that kV is rarely manipulated in real-world practice despite its potential impact on radiation dose. It is the least impactful parameter affecting radiation dose in practice.
EUROPEAN RADIOLOGY
(2023)
Article
Biology
Xiaoman Duan, Xiao Fan Ding, Naitao Li, Fang-Xiang Wu, Xiongbiao Chen, Ning Zhu
Summary: This study presents a novel low-dose imaging strategy called Sparse2Noise, which combines data from sparse-view CT scan and full-view CT scan using a convolutional neural network. Sparse2Noise effectively reduces noise and artifacts while maintaining high image quality.
COMPUTERS IN BIOLOGY AND MEDICINE
(2023)
Article
Radiology, Nuclear Medicine & Medical Imaging
Gerald Gheysens, Walter De Wever, Lesley Cockmartin, Hilde Bosmans, Walter Coudyzer, Sofie De Vuysere, Mathieu Lefere
Summary: The study demonstrates that scoutless ultra-low-dose CT is reliable for detecting solid lung nodules, particularly those with larger volumes. However, detection rates decrease significantly for nodules with smaller volumes when compared to standard-dose CT. Patient body mass index and chest circumference do not influence nodule detectability.
EUROPEAN RADIOLOGY
(2022)