Radiology Commons^™

Radiological-Histopathological Discordance In Patients Transplanted For Hcc And Its Impact On Post-Transplant Outcomes, Islam B Mohamed, Mohamed Saleh Ismail, Ahmed El Sabagh, Ahmed M Afifi Abdelwahab, Efstathia Polychronopoulou, Yong-Fang Kuo, Manal Hassan, John A Goss, Fasiha Kanwal, Prasun K Jalal

Faculty, Staff and Students Publications

BACKGROUND AND AIMS: Contrast-enhanced cross-sectional imaging is the cornerstone in the diagnosis, staging, and management of HCC, including eligibility for liver transplantation (LT). Radiological-histopathological discordance may lead to improper staging and may impact patient outcomes. We aimed to assess the radiological-histopathological discordance at the time of LT in HCC patients and its impact on the post-LT outcomes.

METHODS: We analyzed further the effect of 6-month waiting policy on the discordance. Using United Network for Organ Sharing-Organ Procurement and Transplantation Network (UNOS-OPTN) database, we examined the discordance between pre-LT imaging and explant histopathology for all adult HCC patients who received liver …

Nanoparticle Contrast-Enhanced Mri For Visualization Of Retroplacental Clear Space Disruption In A Mouse Model Of Placental Accreta Spectrum (Pas), Andrew A Badachhape, Prajwal Bhandari, Laxman Devkota, Mayank Srivastava, Eric A Tanifum, Verghese George, Karin A Fox, Chandrasekhar Yallampalli, Ananth V Annapragada, Ketan B Ghaghada

Faculty, Staff and Students Publications

Introduction:

Prior preclinical studies established the utility of liposomal nanoparticle blood-pool contrast agents in visualizing the retroplacental clear space (RPCS), a marker of normal placentation, while sparing fetuses from exposure because the agent does not cross the placental barrier. In this work, we characterized RPCS disruption in a mouse model of placenta accreta spectrum (PAS) using these agents.

Methods:

Contrast-enhanced MRI (CE-MRI) and computed tomography (CE-CT) using liposomal nanoparticles bearing gadolinium (liposomal-Gd) and iodine were performed in pregnant Gab3^−/− and wild type (WT) mice at day 16 of gestation. CE-MRI was performed on a 1T scanner using a 2D …

Pelvic Actinomycosis: A Case Report, Jacklyn Locklear, Rachel Gilbert, Neelima Sukhavasi, Elizabeth Sutton

Graduate Medical Education Research Journal

Introduction: Actinomycosis is a bacterial infection caused by the gram positive anaerobic bacteria that most commonly infects the cervicofacial region of the body. Rarely, it can infect the pelvis and typically presents in a nonspecific manner.

Case Report: We present a case of a 43 year old female G6P6006 with Paragard® intrauterine device (IUD) who presented with purulent umbilical discharge and pelvic pain. Initial imaging was concerned for gastrointestinal or ovarian malignancy. Patient underwent diagnostic laparoscopy with pelvic washings and hysteroscopy D&C. Operative pathology returned with results for actinomyces (IUD likely source).

Conclusion: While it is established IUDs can be …

Stimulatory Effects Of Lycium Shawii On Human Melanocyte Proliferation, Migration, And Melanogenesis: In Vitro And In Silico Studies, Karen E Gerlach, Kanchan Ashok Phalak, Ethan O Cohen, Kiran N Chang, Roland Bassett, Gary J Whitman

Faculty, Staff and Student Publications

Rationale and objectives: Information evaluating the efficacy of 2D synthesized mammography (2Ds) reconstructions in microcalcification detection is limited. This study used stereotactic biopsy data for microcalcifications to evaluate the stepwise implementation of 2Ds in screening mammography. The study aim was to identify whether 2Ds + digital breast tomosynthesis (DBT) is non-inferior to 2D digital mammography (2DM) + 2Ds + DBT, 2DM + DBT, and 2DM in identifying microcalcifications undergoing further diagnostic imaging and stereotactic biopsy.

Materials and methods: Retrospective stereotactic biopsy data were extracted following 151,736 screening mammograms of healthy women (average age, 56.3 years; range, 30-89 years), performed between …

Impact Of Dual-Energy Computed Tomography (Dect) Postprocessing Protocols On Detection Of Monosodium Urate (Msu) Deposits In Foot Tendons Of Cadavers, Andrea Sabine Klauser, Sylvia Strobl, Christoph Schwabl, Christian Kremser, Werner Klotz, Violeta Vasilevska Nikodinovska, Hannes Stofferin, Yannick Scharll, Ethan Halpern

Department of Radiology Faculty Papers

Objective: To evaluate two different dual-energy computed tomography (DECT) post-processing protocols for the detection of MSU deposits in foot tendons of cadavers with verification by polarizing light microscopy as the gold standard. Material and Methods: A total of 40 embalmed cadavers (15 male; 25 female; median age, 82 years; mean, 80 years; range, 52–99; SD ± 10.9) underwent DECT to assess MSU deposits in foot tendons. Two postprocessing DECT protocols with different Hounsfield unit (HU) thresholds, 150/500 (=established) versus 120/500 (=modified). HU were applied to dual source acquisition with 80 kV for tube A and 140 kV for tube B. …

A Novel Peptide 'T14' Reflects Age And Photo-Aging In Human Skin, Sheila Rocha, Sara Garcia Ratés, Tumisang Moswete, Kristopher Kalleberg, Anna Villa, Jason P Harcup, Susan A Greenfield

Faculty, Staff and Student Publications

T14 is a 14mer peptide derived from the C-terminus of acetylcholinesterase (AChE). Once cleaved, it is independently bioactive of the parent molecule and enhances calcium influx in different cell types, in a range of scenarios: it binds to an allosteric site selectively on the alpha-7 receptor, where it modulates calcium influx and is thus a potential trophic agent, as already reported in a range of normal developmental scenarios. However, if inappropriately activated, this erstwhile beneficial effect converts to a toxic one, resulting in pathologies as disparate as Alzheimer’s and various metastatic cancers. Given that epidermal keratinocyte cells have the same …

Radiofrequency Ablation As A Treatment Modality For Primary Hyperparathyroidism: A Systematic Literature Review, Peter P. Issa, Emad Kandil, Grace S. Lee

School of Medicine Faculty Publications

Background: Primary hyperparathyroidism (pHPT) is an endocrine disorder typically characterized by elevated serum calcium and elevated parathyroid hormone (PTH). While parathyroidectomy is the standard treatment, non-operative intervention such as radiofrequency ablation (RFA) has been adopted as an alternative for the management of pHPT, as it has been utilized in other endocrine glands such as thyroid and adrenal. In this literature review, we aim to evaluate the current practice of RFA for pHPT. Methods: A systematic literature search using PubMed, Web of Science, and Embase through June 2022 was conducted. Studies included in the review consisted of patient cohorts who had …

A Novel Bioactive Peptide, T14, Selectively Activates Mtorc1 Signalling: Therapeutic Implications For Neurodegeneration And Other Rapamycin-Sensitive Applications, Sanskar Ranglani, Anna Ashton, Kashif Mahfooz, Joanna Komorowska, Alexandru Graur, Nadine Kabbani, Sara Garcia-Rates, Susan Greenfield

Faculty, Staff and Student Publications

T14 modulates calcium influx via the α-7 nicotinic acetylcholine receptor to regulate cell growth. Inappropriate triggering of this process has been implicated in Alzheimer's disease (AD) and cancer, whereas T14 blockade has proven therapeutic potential in in vitro, ex vivo and in vivo models of these pathologies. Mammalian target of rapamycin complex 1 (mTORC1) is critical for growth, however its hyperactivation is implicated in AD and cancer. T14 is a product of the longer 30mer-T30. Recent work shows that T30 drives neurite growth in the human SH-SY5Y cell line via the mTOR pathway. Here, we demonstrate that T30 induces an …

Radiologic And Histologic Findings Of Locally Advanced Mucoepidermoid Carcinoma Managed With Total Surgical Excision, Christopher R. Huber, Don Truong, Joseph Hatem, Joel Thompson, Bryan Scott

Advances in Clinical Medical Research and Healthcare Delivery

The present case report provides images from computed tomography and histology of a patient with a salivary gland neoplasm consistent with mucoepidermoid carcinoma.

Comparing Pleural Fluid Removal Volume And Oxygenation Change In Therapeutic Thoracentesis: Is There A Relationship?, Hannah Zazulak, Ryanne Burke, Andrea Bodine

Advances in Clinical Medical Research and Healthcare Delivery

Background: During therapeutic thoracentesis (TT), pleural fluid is typically drained to completion. Fluid removal improves oxygenation, and the amount of fluid removed is directly associated with the risk of serious complications. A relationship between the amount of fluid removed during TT and the change in oxygenation has not been found in the literature. A direct relationship was hypothesized in this study. Differences in the change in oxygenation between sexes, age, and pre-procedure oxygen support were secondarily hypothesized. This information would assist in the guidance of future TT protocols.

Methods: Subjects of this retrospective cohort study were males and females aged …

Development Of 5g-Based Remote Ultrasound Education: Current Status And Future Trends, Jiaojiao Ma, Xinying Jia, Guanghan Li, Dandan Guo, Xuehua Xi, Tongtong Zhou, Ji-Bin Liu, Bo Zhang

Department of Radiology Faculty Papers

The rapid advancement of 5G technology has opened new possibilities for remote ultrasound education, offering the potential to enhance training, real-time consultation, and quality control for primary ultrasound doctors. The 5G remote ultrasound education has the potential to revolutionize the way primary ultrasound doctors are trained and supported, ultimately leading to improved patient care and outcomes. By understanding the current status and development trends of this cutting-edge educational approach, the medical community can better prepare for and contribute to its ongoing evolution. Looking towards the future, the development trends in 5G remote ultrasound education are expected to revolve around continuous …

Artificial Intelligence Cad Tools In Trauma Imaging: A Scoping Review From The American Society Of Emergency Radiology (Aser) Ai/Ml Expert Panel, David Dreizin, Pedro V Staziaki, Garvit D Khatri, Nicholas M Beckmann, Zhaoyong Feng, Yuanyuan Liang, Zachary S Delproposto, Maximiliano Klug, J Stephen Spann, Nathan Sarkar, Yunting Fu

Faculty, Staff and Student Publications

BACKGROUND: AI/ML CAD tools can potentially improve outcomes in the high-stakes, high-volume model of trauma radiology. No prior scoping review has been undertaken to comprehensively assess tools in this subspecialty.

PURPOSE: To map the evolution and current state of trauma radiology CAD tools along key dimensions of technology readiness.

METHODS: Following a search of databases, abstract screening, and full-text document review, CAD tool maturity was charted using elements of data curation, performance validation, outcomes research, explainability, user acceptance, and funding patterns. Descriptive statistics were used to illustrate key trends.

RESULTS: A total of 4052 records were screened, and 233 full-text …

Effect Of Sarcopenia On Survival And Spinal Cord Deficit Outcomes After Thoracoabdominal Aortic Aneurysm Repair In Patients 60 Years Of Age And Older, Subhasis Chatterjee, Ann Shi, Luke Yoon, Susan Y Green, Qianzi Zhang, Hiruni S Amarasekara, Vicente Orozco-Sevilla, Ourania Preventza, Scott A Lemaire, Joseph S Coselli

Faculty, Staff and Students Publications

Objective: Sarcopenia (core muscle loss) has been used as a surrogate marker of frailty. We investigated whether sarcopenia would adversely affect survival after thoracoabdominal aortic aneurysm repair.

Methods: We retrospectively reviewed prospectively collected data from patients aged 60 years or older who underwent thoracoabdominal aortic aneurysm repairs from 2006 to 2016. Imaging was reviewed by 2 radiologists blinded to clinical outcomes. The total psoas index was derived from total psoas muscle cross-sectional area (cm2) at the mid-L4 level, normalized for height (m2). Patients were divided by sex-specific total psoas index values into sarcopenia (lower third) and nonsarcopenia (upper two-thirds) groups. …

A Case Report Of Unusual Presentation Of A Rare Renal Tumor, Farzaneh Sharifiaghdas, Behzad Narouie, Mohammad Ghasemi-Rad, Fatemeh Moosavian, Mohadese Ahmadzade, Hamidreza Rouientan

Faculty, Staff and Students Publications

There are very few cases of primary renal Ewing sarcomas, which are characterized by a high rate of metastasis. These tumors are often mistaken for other more common kidney tumors due to their rarity and lack of pathognomonic symptoms in the early stages. A 28-year-old male patient presented to our clinic with a 2-month history of nonproductive progressive cough and left flank pain. The chest was scanned with contrast-enhanced computed tomography, which showed a heterogeneously enhancing mass with central vascularity on the left retroperitoneal. An abdominal dynamic multiphasic magnetic resonance imaging with contrast revealed a large mass that was highly …

Prospective Validation Of Diffusion-Weighted Mri As A Biomarker Of Tumor Response And Oncologic Outcomes In Head And Neck Cancer: Results From An Observational Biomarker Pre-Qualification Study, Abdallah S R Mohamed, Abdelrahman Abusaif, Renjie He, Kareem A Wahid, Vivian Salama, Sara Youssef, Brigid A Mcdonald, Mohamed Naser, Yao Ding, Travis C Salzillo, Moamen A Abobakr, Jihong Wang, Stephen Y Lai, Clifton D Fuller

Faculty, Staff and Student Publications

PURPOSE: To determine DWI parameters associated with tumor response and oncologic outcomes in head and neck (HNC) patients treated with radiotherapy (RT).

METHODS: HNC patients in a prospective study were included. Patients had MRIs pre-, mid-, and post-RT completion. We used T2-weighted sequences for tumor segmentation which were co-registered to respective DWIs for extraction of apparent diffusion coefficient (ADC) measurements. Treatment response was assessed at mid- and post-RT and was defined as: complete response (CR) vs. non-complete response (non-CR). The Mann-Whitney U test was used to compare ADC between CR and non-CR. Recursive partitioning analysis (RPA) was performed to identify …

Endovascular Exclusion Of Ascending Aortic Pseudoaneurysm With An Experimental Ascending Aortic Stent-Graft, Chibueze Onyemkpa, Joseph S Coselli

Faculty, Staff and Students Publications

No abstract provided.

Three-Dimensional Microct Imaging Of Mouse Heart Development From Early Post-Implantation To Late Fetal Stages, Nanbing Li-Villarreal, Tara L Rasmussen, Audrey E Christiansen, Mary E Dickinson, Chih-Wei Hsu

Faculty, Staff and Students Publications

Comprehensive detailed characterization of new mouse models can be challenging due to the individual focus involved in developing these models. Often models are engineered to test a specific hypothesis in a limited number of tissues, stages, and/or other contexts. Whether or not the model produces the desired phenotypes, phenotyping beyond the desired context can be extremely work intensive and these studies are often not undertaken. However, the general information resulting from broader phenotyping can be invaluable to the wider scientific community. The International Mouse Phenotyping Consortium (IMPC) and its subsidiaries, like the Knockout Mouse Project (KOMP), has made great strides …

Glial Progenitor Heterogeneity And Key Regulators Revealed By Single-Cell Rna Sequencing Provide Insight To Regeneration In Spinal Cord Injury, Haichao Wei, Xizi Wu, Joseph Withrow, Raquel Cuevas-Diaz Duran, Simranjit Singh, Lesley S Chaboub, Jyotirmoy Rakshit, Julio Mejia, Andrew Rolfe, Juan J Herrera, Philip J Horner, Jia Qian Wu

Faculty, Staff and Student Publications

Recent studies have revealed the heterogeneous nature of astrocytes; however, how diverse constituents of astrocyte-lineage cells are regulated in adult spinal cord after injury and contribute to regeneration remains elusive. We perform single-cell RNA sequencing of GFAP-expressing cells from sub-chronic spinal cord injury models and identify and compare with the subpopulations in acute-stage data. We find subpopulations with distinct functional enrichment and their identities defined by subpopulation-specific transcription factors and regulons. Immunohistochemistry, RNAscope experiments, and quantification by stereology verify the molecular signature, location, and morphology of potential resident neural progenitors or neural stem cells in the adult spinal cord before …

Rapid Assessment Of Fish Freshness For Multiple Supply-Chain Nodes Using Multi-Mode Spectroscopy And Fusion-Based Artificial Intelligence, Hossein Kashani Zadeh, Mike Hardy, Mitchell Sueker, Yicong Li, Angelis Tzouchas, Nicholas Mackinnon, Gregory Bearman, Simon A Haughey, Alireza Akhbardeh, Insuck Baek, Chansong Hwang, Jianwei Qin, Amanda M Tabb, Rosalee S Hellberg, Shereen Ismail, Hassan Reza, Fartash Vasefi, Moon Kim, Kouhyar Tavakolian, Christopher T Elliott

Faculty, Staff and Student Publications

This study is directed towards developing a fast, non-destructive, and easy-to-use handheld multimode spectroscopic system for fish quality assessment. We apply data fusion of visible near infra-red (VIS-NIR) and short wave infra-red (SWIR) reflectance and fluorescence (FL) spectroscopy data features to classify fish from fresh to spoiled condition. Farmed Atlantic and wild coho and chinook salmon and sablefish fillets were measured. Three hundred measurement points on each of four fillets were taken every two days over 14 days for a total of 8400 measurements for each spectral mode. Multiple machine learning techniques including principal component analysis, self-organized maps, linear and …

Single-Compartment Dose Prescriptions For Ablative 90y-Radioembolization Segmentectomy, Srinivas Cheenu Kappadath, Benjamin P Lopez

Faculty, Staff and Student Publications

BACKGROUND: Yttrium-90 (90Y) radioembolization is increasingly being utilized with curative intent. While single-compartment doses with respect to the perfused volume for the complete pathologic necrosis (CPN) of tumors have been reported, the actual doses delivered to the tumor and at-risk margins that leads to CPN have hitherto not been estimated. We present an ablative dosimetry model that calculates the dose distribution for tumors and at-risk margins based on numerical mm-scale dose modeling and the available clinical CPN evidence and report on the necessary dose metrics needed to achieve CPN following 90Y-radioembolization.

METHODS: Three-dimensional (3D) activity distributions (MBq/voxel) simulating spherical tumors …