keyword
https://read.qxmd.com/read/38537216/unusual-renal-uptake-of-131i-mibg-in-a-young-hypertensive-with-renal-artery-stenosis
#1
JOURNAL ARTICLE
Agrawal Roopal, Malhotra Gaurav
A 10-year-old hypertensive girl underwent 131I-MIBG scan to rule out neural crest derived tumor. The whole-body images revealed diffuse intense tracer uptake in the right kidney, which persisted in 96-hour images as well. CT renal angiography revealed 90% to 95% right renal artery stenosis. Thereafter, she underwent baseline and angiotensin receptor blockade renal dynamic imaging, which revealed hemodynamically significant renal artery stenosis. Pattern of diffuse and intense 131I-MIBG uptake, albeit rare, still warrants further evaluation to rule out renal artery stenosis and investigate its hemodynamic significance for appropriate management...
March 25, 2024: Clinical Nuclear Medicine
https://read.qxmd.com/read/38536535/association-of-lower-extremity-peripheral-arterial-disease-with-quantitative-muscle-features-from-computed-tomography-angiography
#2
JOURNAL ARTICLE
Ge Hu, Yuexin Chen, Chunlin Mu, Xinyue Zhang, Yun Wang, Yining Wang, Huadan Xue, Daming Zhang, Zhengyu Jin
OBJECTIVES: To explore the association between lower extremity muscle features from CTA and peripheral arterial disease (PAD) severity using digital subtraction angiography (DSA) as reference standard. METHODS: Informed consent was waived for this Institutional Review Board approved retrospective study. PAD patients were recruited from July 2016 to September 2020. Two radiologists evaluated PAD severity on DSA and CTA using runoff score. The patients were divided into two groups: mild PAD (DSA score ≤ 7) vs...
March 27, 2024: Insights Into Imaging
https://read.qxmd.com/read/38535524/coronary-ct-angiography-for-predicting-early-post-liver-transplant-mace-paradigm-shift-or-part-of-the-calculus
#3
JOURNAL ARTICLE
Brian Hughes, Michael Kriss, Jon Rice
No abstract text is available yet for this article.
March 27, 2024: Liver Transplantation
https://read.qxmd.com/read/38535140/development-of-a-micro-ct-scanner-with-dual-energy-option-and-endovascular-contrast-agent-administration-protocol-for-fetal-and-neonatal-virtual-autopsy
#4
JOURNAL ARTICLE
Robert Zboray, Wolf Schweitzer, Lars Ebert, Martin Wolf, Sabino Guglielmini, Stefan Haemmerle, Stephan Weiss, Bruno Koller
The rate of parental consent for fetal and perinatal autopsy is decreasing, whereas parents are more likely to agree to virtual autopsy by non-invasive imaging methods. Fetal and perinatal virtual autopsy needs high-resolution and good soft-tissue contrast for investigation of the cause of death and underlying trauma or pathology in fetuses and stillborn infants. This is offered by micro-computed tomography (CT), as opposed to the limited resolution provided by clinical CT scanners, and this is one of the most promising tools for non-invasive perinatal postmortem imaging...
February 29, 2024: Journal of Imaging
https://read.qxmd.com/read/38535047/optimizing-arterial-vessel-contrast-in-portal-venous-phase-with-virtual-monoenergetic-images-from-photon-counting-detector-ct-scans-of-the-abdomen-first-clinical-experiences
#5
JOURNAL ARTICLE
Daniel Dillinger, Daniel Overhoff, Isabelle Ayx, Hanns L Kaatsch, Achim Hagen, Stefan O Schönberg, Stephan Waldeck
BACKGROUND: Photon-counting detector (PCD) computed tomography (CT) allows for the reconstruction of virtual monoenergetic images (VMI) at different thresholds. OBJECTIVE: The aim of our study was to evaluate the optimal arterial contrast in portal venous (pv) scans regarding objective parameters and subjective image quality for different virtual keV levels. METHODS: We identified 40 patients that underwent a CT scan with an arterial and pv phase on a PCD-CT (NAEOTOM alpha, Siemens Healthineers, Forchheim, Germany)...
March 15, 2024: Diagnostics
https://read.qxmd.com/read/38535036/diet-and-lifestyle-intervention-induced-pattern-of-weight-loss-related-to-reduction-in-low-attenuation-coronary-plaque-burden
#6
JOURNAL ARTICLE
Jan Henzel, Mariusz Kruk, Cezary Kępka, Magdalena Makarewicz-Wujec, Łukasz Wardziak, Piotr Trochimiuk, Hubert Krysztofiak, Rafał Dąbrowski, Zofia Dzielińska, Pál Maurovich-Horvat, Marcin Demkow
BACKGROUND: Despite extensive research on body weight and cardiovascular risk, the mechanistic relationship between weight loss and coronary plaque modification has not been adequately addressed. This study aimed to determine the association between body composition dynamics and low-attenuation coronary plaque (LAP) burden. METHODS: Eighty-nine participants (40% women, 60 ± 7.7 years) of the Dietary Intervention to Stop Coronary Atherosclerosis in Computed Tomography (DISCO-CT) study with non-obstructive atherosclerosis with nonobstructive atherosclerosis confirmed in computed tomography angiography (CCTA), a randomized (1:1), prospective, single-center study were included into the analysis...
March 14, 2024: Diagnostics
https://read.qxmd.com/read/38533953/polygenic-scores-and-preclinical-cardiovascular-disease-in-individuals-with-hiv-insights-from-the-reprieve-trial
#7
JOURNAL ARTICLE
Roger S Zou, Yunfeng Ruan, Buu Truong, Romit Bhattacharya, Michael T Lu, Júlia Karády, Rachel Bernardo, Phoebe Finneran, Whitney Hornsby, Kathleen V Fitch, Heather J Ribaudo, Markella V Zanni, Pamela S Douglas, Steven K Grinspoon, Aniruddh P Patel, Pradeep Natarajan
BACKGROUND: Coronary artery disease (CAD) is a leading cause of death among the 38.4 million people with HIV globally. The extent to which cardiovascular polygenic risk scores (PRSs) derived in non-HIV populations generalize to people with HIV is not well understood. METHODS AND RESULTS: PRSs for CAD (GPSMult ) and lipid traits were calculated in a global cohort of people with HIV treated with antiretroviral therapy with low-to-moderate atherosclerotic cardiovascular disease risk enrolled in REPRIEVE (Randomized Trial to Prevent Vascular Events in HIV)...
March 27, 2024: Journal of the American Heart Association
https://read.qxmd.com/read/38533317/evaluation-of-peri-plaque-pericoronary-adipose-tissue-attenuation-in-coronary-atherosclerosis-using-a-dual-layer-spectral-detector-ct
#8
JOURNAL ARTICLE
Yulin Jia, Lei Zou, Ming Xue, Xiaoyu Zhang, Xigang Xiao
PURPOSE: This study aimed to evaluate the differences between pericoronary adipose tissue (PCAT) attenuation at different measured locations in evaluating coronary atherosclerosis using spectral computed tomography (CT) and to explore valuable imaging indicators. METHODS: A total of 330 patients with suspicious coronary atherosclerosis were enrolled and underwent coronary CT angiography with dual-layer spectral detector CT (SDCT). Proximal and peri-plaque fat attenuation index (FAI) of stenosis coronary arteries were measured using both conventional images (CIs) and virtual monoenergetic images (VMIs) ranging from 40 keV to 100 keV...
2024: Frontiers in Medicine
https://read.qxmd.com/read/38531830/homocysteine-modifies-the-association-of-coronary-stenosis-and-hiv-infection-in-an-inner-city-african-american-population
#9
JOURNAL ARTICLE
Thorsten M Leucker, Tarek Harb, Gary Gerstenblith, David D Celentano, Efthymios Ziogos, Glenn Treisman, Raul N Mandler, Jag Khalsa, Man Charurat, Shenghan Lai, Hong Lai
BACKGROUND AND AIMS: People with HIV (PWH) whose disease is controlled on anti-retroviral regimens remain at an increased risk for coronary artery disease (CAD). Traditional cardiovascular risk factors do not fully explain the residual risk in PWH suggesting contributions from nontraditional factors. Homocysteine (Hcy) may be one of these as prior work in adults without HIV demonstrate that Hcy may impair endothelial function by decreasing the availability of nitric oxide, promoting the development of atherosclerosis...
March 26, 2024: International Journal of STD & AIDS
https://read.qxmd.com/read/38530547/how-young-radiologists-use-contrast-media-and-manage-adverse-reactions-an-international-survey
#10
JOURNAL ARTICLE
Domenico Albano, Carmen Mallardi, Saif Afat, Paulo Moraes Agnollitto, Damiano Caruso, Roberto Cannella, Serena Carriero, Kalina Chupetlovska, Paola Clauser, Tommaso D'Angelo, Domenico De Santis, Marco Dioguardi Burgio, Ivo Dumic-Cule, Salvatore Claudio Fanni, Stefano Fusco, Marco Gatti, Salvatore Gitto, Sonja Jankovic, Tsvetomir Karagechev, Michail E Klontzas, Emmanouil Koltsakis, Doris Leithner, Vid Matišić, Giuseppe Muscogiuri, Ralitsa Penkova, Michela Polici, Francesca Serpi, Carmelo Sofia, Ziga Snoj, Tugba Akinci D'Antonoli, Federica Vernuccio, João Vieira, Ana Catarina Vieira, Mirjam Wielema, Marta Zerunian, Carmelo Messina
OBJECTIVES: To collect real-world data about the knowledge and self-perception of young radiologists concerning the use of contrast media (CM) and the management of adverse drug reactions (ADR). METHODS: A survey (29 questions) was distributed to residents and board-certified radiologists younger than 40 years to investigate the current international situation in young radiology community regarding CM and ADRs. Descriptive statistics analysis was performed...
March 26, 2024: Insights Into Imaging
https://read.qxmd.com/read/38530174/coronary-artery-calcium-scoring-using-virtual-versus-true-noncontrast-images-from-photon-counting-coronary-ct-angiography
#11
JOURNAL ARTICLE
Nina P Haag, Arwed E Michael, Simon Lennartz, Christoph Panknin, Julius H Niehoff, Jan Borggrefe, Iram Shahzadi, Alex Zwanenburg, Jan Robert Kroeger
Background Coronary artery calcium scoring (CACS) for coronary artery disease requires true noncontrast (TNC) CT alongside contrast-enhanced coronary CT angiography (CCTA). Photon-counting CT provides an algorithm (PureCalcium) for reconstructing virtual noncontrast images from CCTA specifically for CACS. Purpose To assess CACS differences based on PureCalcium images derived from contrast-enhanced photon-counting CCTA compared with TNC images and evaluate the impact of these differences on the clinically relevant classification of patients into plaque burden groups...
March 2024: Radiology
https://read.qxmd.com/read/38529447/the-anatomical-variation-of-the-distal-anterior-cerebral-artery-an-angiographic-study-in-a-greek-population-sample
#12
JOURNAL ARTICLE
Christos Chrissicopoulos, Georgios Mavrovounis, Maria Piagkou, George Triantafyllou, Nikolaos Nasis, George Stranjalis, Alexander Andreou, Theodosis Kalamatianos
Objective The current retrospective angiographic study establishes the rates of variants in the distal anterior cerebral artery (DACA) in a sample of the Greek population. Methods Data were collected from 456 patients who underwent two-dimensional (2D) or three-dimensional (3D) digital subtraction angiography (DSA) of the carotid and vertebral arteries bilaterally. The study focused on patients with good visualization of the anterior and posterior circulations and employed magnetic resonance (MR) or computed tomography (CT) angiography for 3D reconstruction...
February 2024: Curēus
https://read.qxmd.com/read/38529419/%C3%B0-rare-case-of-an-infected-ruptured-popliteal-artery-aneurysm-occurring-following-surgical-treatment-for-panaritium
#13
Alexander T Daskalov
We present a successful case of treating an infected popliteal aneurysm in a 71-year-old man who arrived at the emergency department in a septic state, reporting a three-week history of fever, lethargy, general malaise, and pain and swelling in the right popliteal fossa. Previously diagnosed with a sizable right popliteal aneurysm, the patient had undergone endovascular treatment using a Viabahn (WL Gore & Associates, Flagstaff, USA) endoprosthesis two months earlier. His fever and malaise emerged a week following minor surgery for a toe infection (panaritium) on the right foot, leading to subsequent necrotic lymphangitis on the dorsum of the same foot...
February 2024: Curēus
https://read.qxmd.com/read/38528780/ct-perfusion-based-rcbf-38-volume-is-independently-and-negatively-associated-with-digital-subtraction-angiography-collateral-score-in-anterior-circulation-large-vessel-occlusions
#14
JOURNAL ARTICLE
Dhairya A Lakhani, Aneri B Balar, Manisha Koneru, Sijin Wen, Burak Berksu Ozkara, Richard Wang, Meisam Hoseinyazdi, Mehreen Nabi, Ishan Mazumdar, Andrew Cho, Kevin Chen, Sadra Sepehri, Nathan Hyson, Risheng Xu, Victor Urrutia, Licia Luna, Argye E Hillis, Jeremy J Heit, Greg W Albers, Ansaar T Rai, Vivek S Yedavalli
BACKGROUND: Collateral status (CS) is an important biomarker of functional outcomes in patients with acute ischemic stroke secondary to large vessel occlusion (AIS-LVO). Pretreatment CT perfusion (CTP) parameters serve as reliable surrogates of collateral status (CS). In this study, we aim to assess the relationship between the relative cerebral blood flow less than 38% (rCBF <38%), with the reference standard American Society of Interventional and Therapeutic Neuroradiology (ASITN) collateral score (CS) on DSA...
March 25, 2024: Neuroradiology Journal
https://read.qxmd.com/read/38528691/2024-consensus-statement-on-coronary-stenosis-and-plaque-evaluation-in-ct-angiography-from-the-asian-society-of-cardiovascular-imaging-practical-tutorial-asci-pt
#15
REVIEW
Cherry Kim, Chul Hwan Park, Bae Young Lee, Chan Ho Park, Eun-Ju Kang, Hyun Jung Koo, Kakuya Kitagawa, Min Jae Cha, Rungroj Krittayaphong, Sang Il Choi, Hwan Seok Yong, Sung Min Ko, Sung Mok Kim, Sung Ho Hwang, Nguyen Ngoc Trang, Whal Lee, Young Jin Kim, Jongmin Lee, Dong Hyun Yang
The Asian Society of Cardiovascular Imaging-Practical Tutorial (ASCI-PT) is an instructional initiative of the ASCI School designed to enhance educational standards. In 2021, the ASCI-PT was convened with the goal of formulating a consensus statement on the assessment of coronary stenosis and coronary plaque using coronary CT angiography (CCTA). Nineteen experts from four countries conducted thorough reviews of current guidelines and deliberated on eight key issues to refine the process and improve the clarity of reporting CCTA findings...
April 2024: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://read.qxmd.com/read/38528619/the-aria-trial-protocol-a-randomised-controlled-trial-to-assess-the-clinical-technical-and-cost-effectiveness-of-a-cloud-based-artificially-intelligent-image-fusion-system-in-comparison-to-standard-treatment-to-guide-endovascular-aortic-aneurysm-repair
#16
JOURNAL ARTICLE
James Budge, Tom Carrell, Medeah Yaqub, Hatem Wafa, Matt Waltham, Izabela Pilecka, Joanna Kelly, Caroline Murphy, Stephen Palmer, Yanzhong Wang, Rachel E Clough
BACKGROUND: Endovascular repair of aortic aneurysmal disease is established due to perceived advantages in patient survival, reduced postoperative complications, and shorter hospital lengths of stay. High spatial and contrast resolution 3D CT angiography images are used to plan the procedures and inform device selection and manufacture, but in standard care, the surgery is performed using image-guidance from 2D X-ray fluoroscopy with injection of nephrotoxic contrast material to visualise the blood vessels...
March 25, 2024: Trials
https://read.qxmd.com/read/38528196/nonocclusive-mesenteric-ischemia-nomi-on-roux-limb-after-biliary-reconstruction-successfully-treated-by-interventional-radiology-ivr
#17
JOURNAL ARTICLE
Makoto Kawamoto, Yoshihiro Miyasaka, Nobuhiko Koreeda, Yousuke Hirano, Ryotaro Yamamoto, Masato Watanabe
Nonocclusive mesenteric ischemia (NOMI) is a life-threatening disorder. Early diagnosis is challenging because NOMI lacks specific symptoms. A 52-year-old man who received extended cholecystectomy with Roux-en-Y hepaticojejunostomy for gallbladder cancer (GBC) presented to our hospital with nausea and vomiting. Neither tender nor peritoneal irritation sign was present on abdominal examination. Blood test exhibited marked leukocytosis (WBC:19,800/mm3). A contrast-enhanced abdominal computed tomography (CT) scan revealed remarkable wall thickening and lower contrast enhancement effect localized to Roux limb...
March 25, 2024: Clinical Journal of Gastroenterology
https://read.qxmd.com/read/38527795/deep-learning-on-pre-procedural-computed-tomography-and-clinical-data-predicts-outcome-following-stroke-thrombectomy
#18
JOURNAL ARTICLE
James P Diprose, William K Diprose, Tuan-Yow Chien, Michael T M Wang, Andrew McFetridge, Gregory P Tarr, Kaustubha Ghate, James Beharry, JaeBeom Hong, Teddy Wu, Doug Campbell, P Alan Barber
BACKGROUND: Deep learning using clinical and imaging data may improve pre-treatment prognostication in ischemic stroke patients undergoing endovascular thrombectomy (EVT). METHODS: Deep learning models were trained and tested on baseline clinical and imaging (CT head and CT angiography) data to predict 3-month functional outcomes in stroke patients who underwent EVT. Classical machine learning models (logistic regression and random forest classifiers) were constructed to compare their performance with the deep learning models...
March 25, 2024: Journal of Neurointerventional Surgery
https://read.qxmd.com/read/38527154/diagnostic-performance-of-carotid-ring-sign-on-ct-angiography-in-internal-carotid-true-occlusion
#19
JOURNAL ARTICLE
Tingyu Yi, Yi Sui, Dinghuan Zheng, Xinwen Ren, Xiaohui Lin, Yanmin Wu, Dinglai Lin, Zhinan Pan, Xiufen Zheng, Ganji Hong, Meihua Wu, Lisan Zeng, Wenhuo Chen
BACKGROUND: To differentiate between pseudo occlusion (PO) and true occlusion (TO) of internal carotid artery (ICA) is important in thrombectomy treatment planning for patients with acute ischemic stroke. Although delayed contrast filling has been differentiated carotid PO from TO, its application has been limited by the implementations of multiphasic computed tomography angiography. In this study, we hypothesized that carotid ring sign, which is readily acquired from single-phasic CTA, can sufficiently differentiate carotid TO from PO...
April 2024: Stroke; a Journal of Cerebral Circulation
https://read.qxmd.com/read/38526041/tungsten-based-contrast-agent-for-photon-counting-detector-ct-angiography-in-calcified-coronaries-comparison-to-iodine-in-a-cardiovascular-phantom
#20
JOURNAL ARTICLE
Thomas Sartoretti, Michael C McDermott, Lion Stammen, Bibi Martens, Lukas J Moser, Gregor Jost, Hubertus Pietsch, Ralf Gutjahr, Tristan Nowak, Bernhard Schmidt, Thomas G Flohr, Joachim E Wildberger, Hatem Alkadhi
OBJECTIVES: Calcified plaques induce blooming artifacts in coronary computed tomography angiography (CCTA) potentially leading to inaccurate stenosis evaluation. Tungsten represents a high atomic number, experimental contrast agent with different physical properties than iodine. We explored the potential of a tungsten-based contrast agent for photon-counting detector (PCD) CCTA in heavily calcified coronary vessels. MATERIALS AND METHODS: A cardiovascular phantom exhibiting coronaries with calcified plaques was imaged on a first-generation dual-source PCD-CT...
March 25, 2024: Investigative Radiology
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