Mohamad Nawras, Zakaria Alyousif, Azizullah Beran, Haitham Elsamaloty
OBJECTIVE: The effect of iodinated contrast material (CM) temperature on injection pressures and viscosity has been well established. However, the effect of extrinsic warming of CM on allergic reactions and extravasations remains unclear. The purpose of this study is to compare the rates of allergic reactions and extravasations between warmed CM to room temperature CM. METHODS: We conducted a comprehensive systematic search using PubMed, Embase, and Web of Science databases for all studies that assess the impact of warmed CM on adverse reactions...
May 18, 2023: Clinical Imaging
Zhao Zhang, Santo Maimone
The "acorn cyst" sign is an imaging sign encountered on breast ultrasound exams denoting a type of benign complicated cyst. An acorn cyst is comprised of a deep anechoic fluid portion (the "acorn") and a more superficial echogenic layer of material (the "acorn cap"). Radiologists should attempt to distinguish the acorn cyst from more suspicious complex cystic and solid masses; if unable to do so, aspiration/biopsy can be performed to exclude a malignant lesion.
May 16, 2023: Clinical Imaging
Christopher Trepanier, Alice Huang, Michael Liu, Richard Ha
Breast ultrasound is a valuable adjunctive tool to mammography in detecting breast cancer, especially in women with dense breasts. Ultrasound also plays an important role in staging breast cancer by assessing axillary lymph nodes. However, its utility is limited by operator dependence, high recall rate, low positive predictive value and low specificity. These limitations present an opportunity for artificial intelligence (AI) to improve diagnostic performance and pioneer novel uses of ultrasound. Research in developing AI for radiology has flourished over the past few years...
May 13, 2023: Clinical Imaging
Bita Hazhirkarzar, Qingxia Wu, Hao Tang, Azarakhsh Baghdadi, Mina Motaghi, Roya Rezvani Habibabadi, Mohammadreza Shaghaghi, Maryam Ghadimi, Ali Borhani, Alireza Mohseni, Li Pan, Bradley D BolsterJr, Ihab R Kamel
OBJECTIVES: To compare the maximum axial area of the confidence mask and the calculated liver stiffness (LS) on gradient-echo (GRE) and spin-echo echo planar imaging (SE-EPI) MR elastography (MRE) in patients with and without iron deposition. METHODS: 104 patients underwent MRE by GRE and SE-EPI sequences at 3 T. R2* values >88 Hz in the liver were categorized in the iron overload group. The maximum axial area and the corresponding LS values were measured by manually contouring the whole area on one slice with the largest confidence mask at both GRE and SE-EPI sequences...
May 11, 2023: Clinical Imaging
Cody H Savage, A Michael Devane, Yufeng Li, Mei Li, Noah C Schammel, Madison E Little, Christine Schammel, Richard A Pigg, Husammedin El Khudari, Soroush Rais-Bahrami, Junjian Huang, Andrew J Gunn
PURPOSE: To access if the (MC)2 scoring system can identify patients at risk for major adverse events following percutaneous microwave ablation of renal tumors. METHODS: Retrospective review of all adult patients who underwent percutaneous renal microwave ablation at two centers. Patient demographics, medical histories, laboratory work, technical details of the procedure, tumor characteristics, and clinical outcomes were collected. The (MC)2 score was calculated for each patient...
May 7, 2023: Clinical Imaging
Carter Smith, Sophia Nance, Jordan H Chamberlin, Dhruw Maisuria, Jim O'Doherty, Dhiraj Baruah, Uwe Joseph Schoepf, Akos-Varga Szemes, Saeed Elojeimy, Ismail M Kabakus
RATIONALE: Single-photon-emission-computerized-tomography/computed-tomography(SPECT/CT) is commonly used for pulmonary disease. Scant work has been done to determine ability of AI for secondary findings using low-dose-CT(LDCT) attenuation correction series of SPECT/CT. METHODS: 120 patients with ventilation-perfusion-SPECT/CT from 9/1/21-5/1/22 were included in this retrospective study. AI-RAD companion(VA10A,Siemens-Healthineers, Erlangen, Germany), an ensemble of deep-convolutional-neural-networks was evaluated for the detection of pulmonary nodules, coronary artery calcium, aortic ectasia/aneurysm, and vertebral height loss...
May 2, 2023: Clinical Imaging
Lauren E Kearney, Caitlin Butler, Eduardo R Nunez, Shirley Qian, Christopher G Slatore, Lucy Spalluto, Renda Soylemez Wiener
No abstract text is available yet for this article.
May 2, 2023: Clinical Imaging
Lukas Goertz, Christian Nelles, Lenhard Pennig, Alexander Christian Bunck, Robert Peter Reimer, Philipp Fervers, Christoph Kabbasch, David Maintz, Erkan Celik
BACKGROUND: Left atrial outpouching structures such as left atrial diverticula (LADs) and left-sided septal pouches (LSSPs) might be a source of cryptogenic stroke. This imaging study evaluates the association between pouch morphology, patient comorbidities and ischemic brain lesions (IBLs). METHODS: This is a retrospective single-center analysis of 195 patients who received both a cardiac CT and a cerebral MRI. LADs, LSSPs, and IBLs were retrospectively identified...
April 28, 2023: Clinical Imaging
Sarah Fischer, Shari Friedman, Edward Mardakhaev, Ari Spiro, Eitan Sosner, Kenny Ye, Seymour Sprayregen, Beverly Thornhill
OBJECTIVE: At certain institutions and radiology practices, a routine lumbar radiographic exam may include 3 views: AP, lateral, and coned-down lateral of the lumbosacral junction. The purpose of this study is to determine whether the third coned-down-lateral view adds significant diagnostic information regarding pathology at the L4-L5 and L5-S1 levels. MATERIALS AND METHODS: This retrospective study includes patients (n = 74) who had a 3-view radiographic exam of the lumbar spine, as well as a CT or MRI within six months...
April 26, 2023: Clinical Imaging
Sindhura Tadisetty, Rashmi T Nair, Elhamy R Heba, Adrian Dawkins
The Kissing ovaries sign is a radiological sign seen in women with deep pelvic endometriosis. It refers to abutment of the ovaries within the cul-de-sac. The term kissing ovaries was first described by Ghezzi et al. (2005) and has been since used widely. When seen on imaging it indicates moderate to severe endometriosis with the ovaries tethered within abnormal pelvic soft tissue, which may warrant surgical management.
April 25, 2023: Clinical Imaging
Maximilian C Stahl, Steven Shamah, Kapil Wattamwar, Andrea C Furlani, Maria Serrano, Linda B Haramati
RATIONALE AND OBJECTIVES: The COVID-19 pandemic led to the national shutdown and subsequent reopening of cancer screening programs. Our diverse inner-city lung cancer screening program serves patients in the Bronx NY, which was severely affected by COVID-19, with the highest mortality in New York State in the spring of 2020. Staffing redeployment, quarantine protocols, increased safety measures, and changes in follow up resulted. The purpose of this study is to analyze the effect of the pandemic on lung cancer screening volumes during the first year of the pandemic...
April 25, 2023: Clinical Imaging
Daniel Giraldo Herrera, Bahrom J Ostad, Luke R Wilkins, Daniel P Sheeran, Auh Whan Park, Allen R Goode, James T Patrie, John F Angle
PURPOSE: To investigate whether pre-procedure Computed Tomography Angiography (CTA) improves radiation exposure, procedure complexity, and symptom recurrence after bronchial embolization for massive hemoptysis. MATERIAL AND METHODS: A single-center retrospective review of bronchial artery embolization (BAE) for massive hemoptysis was performed for procedures between 2008 and 2019. Multi-variate analysis was performed to determine the significance of pre-procedure CTA and etiology of hemoptysis on patient radiation exposure (reference point air kerma, RPAK) and rate of recurrent hemoptysis...
April 21, 2023: Clinical Imaging
Motoko Konno, Akira Anbai, Koji Fukuda, Naoko Mori
No abstract text is available yet for this article.
April 8, 2023: Clinical Imaging
Nuno Vaz, Elisa Franquet, Pedram Heidari, David Z Chow, Heather A Jacene, Thomas S C Ng
COVID-19 is a multisystemic disease, and hence its potential manifestations on nuclear medicine imaging can extend beyond the lung. Therefore, it is important for the nuclear medicine physician to recognize these manifestations in the clinic. While FDG-PET/CT is not indicated routinely in COVID-19 evaluation, its unique capability to provide a functional and anatomical assessment of the entire body means that it can be a powerful tool to monitor acute, subacute, and long-term effects of COVID-19. Single-photon scintigraphy is routinely used to assess conditions such as pulmonary embolism, cardiac ischemia, and thyroiditis, and COVID-19 may present in these studies...
April 8, 2023: Clinical Imaging
Matthias Boschheidgen, Marta Kantauskaite, Johannes Stegbauer, Kira Wenker, Till Dringenberg, Karl-Ludger Radke, Tim Ullrich, Andreas Krieg, Andrea Steuwe, Peter Minko, Matthias Schott, Lars Christian Rump, Gerald Antoch, Lars Schimmöller
BACKGROUND: To analyze contrast free adrenal vein sampling (AVS) for differentiating unilateral from bilateral disease in patients diagnosed with hypertension due to primary aldosteronism (PA). METHODS: Consecutive patients with PA and subsequent contrast medium free AVS between April 2015 and March 2020 were retrospectively included. Cross-sectional imaging (CSI), AVS and clinical data were analyzed regarding diagnostic performance. In addition, patients with lateralisation receiving adrenalectomy were compared to a control group treated with mineralocorticoid antagonists...
April 7, 2023: Clinical Imaging
Francesco Bianconi, Mario Luca Fravolini, Barbara Palumbo
Indeterminate lung nodules detected on CT are common findings in the clinical practice, and the correct assessment of their size is critical for patient evaluation and management. We compared the stability of three definitions of nodule diameter (Feret's mean diameter, Martin's mean diameter and area-equivalent diameter) to inter-observer variability on a population of 336 solid nodules from 207 subjects. We found that inter-observer agreement was highest with Martin's mean diameter (intra-class correlation coefficient = 0...
April 6, 2023: Clinical Imaging
Iris Chen, Aleksandar Kitich, Melissa Joines, James Sayre, Jane Dascalos, Anne Hoyt, Hannah Milch
BACKGROUND: Breast ultrasonography is a useful modality in patients undergoing diagnostic and screening breast imaging. However, breast ultrasound has a high false positive rate and can be time-consuming to perform. PURPOSE: The purpose of this study was to evaluate the clinical impact of incidental axillary findings found on diagnostic breast ultrasounds at a single multi-site institution that has a standard protocol of scanning the axilla for all breast ultrasound exams...
April 6, 2023: Clinical Imaging
Rachel Gingold-Belfer, Nadav Shinhar, Gil N Bachar, Nidal Issa, Doron Boltin, Eran Sharon, Tzippy Shohat, Boris Sapoznikov, Ariel Swartz, Noam Peleg, Tom Konikoff, Hemda Schmilovitz-Weiss
BACKGROUND: Ultrasound-guided percutaneous liver biopsy (UPLB) is currently performed mainly to determine if new hepatic space occupying lesions (SOL) represent benign, primary malignant, or metastatic disease. This study sought to investigate the outcome of UPLB in this setting. METHODS: In a retrospective study, patients with a new hepatic SOL who underwent UPLB during 1/2006-12/2016 were included and followed to 12/2018. Clinical data and pathology reports were reviewed...
April 6, 2023: Clinical Imaging
Getrude Makurumidze, Gelila Solomon, Nabel Solomon, Yohannes Bayou, Farouk Dako
BACKGROUND: Lung cancer remains the leading cause of cancer death worldwide and an urgent public health priority. Early detection by low-dose CT (LDCT) screening and treatment of lung cancer has been shown to reduce mortality but uptake remains dismal, particularly among historically underserved groups. Following the US Preventive Services Task Force (USPSTF) expansion of its eligibility criteria to address inequities in utilization, efforts are needed to ensure dissemination of updated health information through digital means such as websites...
March 30, 2023: Clinical Imaging
Diogo Goulart Corrêa, Felipe Torres Pacheco, Luiz Celso Hygino da Cruz, Renato Hoffmann Nunes, Antônio Carlos Martins Maia, Luis Filipe de Souza Godoy, Louise Bisolo, Nivaldo Adolfo da Silva, Matheus Dorigatti Soldatelli, Christiane Monteiro de Siqueira Campos, Leonardo Modesti Vedolin, Lázaro Luis Faria do Amaral, Antônio José da Rocha
Vasculitis is a complication of several infectious diseases affecting the central nervous system, which may result in ischemic and/or hemorrhagic stroke, transient ischemic attack, and aneurysm formation. The infectious agent may directly infect the endothelium, causing vasculitis, or indirectly affect the vessel wall through an immunological mechanism. The clinical manifestations of these complications usually overlap with those of non-infectious vascular diseases, making diagnosis challenging. Intracranial vessel wall magnetic resonance imaging (VWI) enables the evaluation of the vessel wall and the diseases that affect it, providing diagnostic data beyond luminal changes and enabling the identification of inflammatory changes in cerebral vasculitis...
March 28, 2023: Clinical Imaging
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