Radiology Commons^™

A Meta-Analysis On The Diagnostic Utility Of Ultrasound In Pediatric Distal Forearm Fractures, Amir Hassankhani, Melika Amoukhteh, Payam Jannatdoust, Parya Valizadeh, Delaram J Ghadimi, Pauravi S Vasavada, Jennifer H Johnston, Ali Gholamrezanezhad

Faculty, Staff and Student Publications

Pediatric distal forearm fractures, comprising 30% of musculoskeletal injuries in children, are conventionally diagnosed using radiography. Ultrasound has emerged as a safer diagnostic tool, eliminating ionizing radiation, enabling bedside examinations with real-time imaging, and proving effective in non-hospital settings. The objective of this study is to evaluate the diagnostic efficacy of ultrasound for detecting distal forearm fractures in the pediatric population. A systematic review and meta-analysis were conducted through a comprehensive literature search in PubMed, Scopus, Web of Science, and Embase databases until October 1, 2023, following established guidelines. Eligible studies, reporting diagnostic accuracy measures of ultrasound in pediatric patients …

Intraprocedural Versus Initial Follow-Up Minimal Ablative Margin Assessment After Colorectal Liver Metastasis Thermal Ablation: Which One Better Predicts Local Outcomes?, Yuan-Mao Lin, Iwan Paolucci, Jessica Albuquerque Marques Silva, Caleb S O'Connor, Bryan M Fellman, Aaron K Jones, Joshua D Kuban, Steven Y Huang, Zeyad A Metwalli, Kristy K Brock, Bruno C Odisio

Faculty, Staff and Student Publications

Objectives: The aim of this study was to investigate the prognostic value of 3-dimensional minimal ablative margin (MAM) quantified by intraprocedural versus initial follow-up computed tomography (CT) in predicting local tumor progression (LTP) after colorectal liver metastasis (CLM) thermal ablation.

Materials and methods: This single-institution, patient-clustered, tumor-based retrospective study included patients undergoing microwave and radiofrequency ablation between 2016 and 2021. Patients without intraprocedural and initial follow-up contrast-enhanced CT, residual tumors, or with follow-up less than 1 year without LTP were excluded. Minimal ablative margin was quantified by a biomechanical deformable image registration method with segmentations of CLMs on intraprocedural preablation …

Less Contrast, More Clarity, Innovative Visualization Technique For Management Of Multiple Colorectal Liver Metastases Using Microwave Ablation Through A Portal Venous Acces, Kelly Trinh, Muhammad Hamza Shamim, Mohammad Ghasemi-Rad

Faculty, Staff and Students Publications

Colorectal cancer, a leading cause of cancer-related deaths, often results in liver metastases, with about half of patients affected. For those ineligibles for surgery, percutaneous microwave ablation (MWA) offers a viable alternative. Conventionally, visualizing liver lesions prior to MWA demands significant IV contrast, often needing repeated sessions. We introduce a technique using minimal IV contrast to treat multiple metastatic lesions simultaneously. A case of a 47-year-old male with stage 4 colorectal adenocarcinoma and multiple liver metastases is presented. Instead of the typical 100-150 cc of IV contrast, our method used just 25 cc, successfully ablating 6 hepatic metastases in 1 …

High-Density Glass Scintillators For Proton Radiography-Relative Luminosity, Proton Response, And Spatial Resolution, Ethan Stolen, Ryan Fullarton, Rain Hein, Robin L Conner, Luiz G Jacobsohn, Charles-Antoine Collins-Fekete, Sam Beddar, Ugur Akgun, Daniel Robertson

Faculty, Staff and Student Publications

Proton radiography is a promising development in proton therapy, and researchers are currently exploring optimal detector materials to construct proton radiography detector arrays. High-density glass scintillators may improve integrating-mode proton radiography detectors by increasing spatial resolution and decreasing detector thickness. We evaluated several new scintillators, activated with europium or terbium, with proton response measurements and Monte Carlo simulations, characterizing relative luminosity, ionization quenching, and proton radiograph spatial resolution. We applied a correction based on Birks's analytical model for ionization quenching. The data demonstrate increased relative luminosity with increased activation element concentration, and higher relative luminosity for samples activated with europium. …

Zika Virus Prevention Behaviors And Knowledge Among Male Partners Of Pregnant People And Lack Of Condom Use As A Prevention Behavior From The Zika En Embarazadas Y Niños (Zen) Prospective Cohort Study, Colombia, Christina L Sancken, Ayzsa Tannis, Sandra A Amouzou, Veronica Burkel, Jeffrey M Carlson, Suzanne Newton, Suzanne M Gilboa, Maritza Gonzalez, Diana Valencia, Van T Tong, Martha Ospina

Faculty, Staff and Student Publications

Objective: Zika virus (ZIKV) infection in pregnancy can cause brain and eye abnormalities and neurodevelopmental sequelae. In the absence of medical countermeasures, behavioral interventions were recommended to prevent mosquito bites and sexual transmission of ZIKV. This report uses data from the Zika en Embarazadas y Niños (ZEN) prospective cohort study in Colombia to describe the knowledge, attitudes, and behaviors (KAB) related to ZIKV prevention in male partners compared to those of their pregnant partners at study enrollment during February 2017-2018.

Results: Most male partners reported wearing protective clothing such as long pants (97.6%) and long sleeves (72.8%), as well as …

Safety And Efficacy Of Dynamic Catheter-Directed Cerebral Digital Subtraction Angiography For Diagnosis Of Bowhunter Syndrome Spectrum Disorders: A Systematic Review Of The Literature, Joo Won Choi, Yang Qiao, Tej I Mehta, Jessica N Wilson, Trevor H Torigoe, Samuel Tsappidi, Y Jonathan Zhang, Stacy C Brown, Ferdinand K Hui, Todd Abruzzo

Faculty, Staff and Student Publications

Introduction: Dynamic catheter-directed cerebral digital subtraction angiography (dcDSA) is the gold standard for diagnosing dynamic vascular occlusion syndromes such as bowhunter syndrome (BHS). Nonetheless, concerns about its safety exist and no standardized protocols have been published to date.

Methods: We describe our methodology and insights regarding the use of dcDSA in patients with BHS. We also perform a systematic literature review to identify cases of typical and atypical presentations of BHS wherein dcDSA was utilized and report on any procedural complications related to dcDSA.

Results: Our study included 104 cases wherein dcDSA was used for the diagnosis of BHS. There …

Incidental Ring-Hyperenhancing Liver Micronodules At Ct Hepatic Arteriography-Guided Percutaneous Thermal Ablation Of Colorectal Liver Metastases, Jessica Albuquerque, Yuan-Mao Lin, Iwan Paolucci, Caleb S O'Connor, Ching-Wei Tzeng, Jean-Nicolas Vauthey, Kristy K Brock, Bruno C Odisio

Faculty, Staff and Student Publications

CT during hepatic arteriography (CTHA) is a highly sensitive imaging method for detecting colorectal liver metastases (CLMs), which supports its use during percutaneous thermal liver ablation. In contrast to its high sensitivity, its specificity for incidental small CLMs not detected at preablation cross-sectional imaging is believed to be low given the absence of specific imaging signatures and the common presence of pseudolesions. In this retrospective study of 22 patients (mean age, 55 years ± 10.6 [SD]; 63.6% male, 36.4% female) with CLMs undergoing CTHA-guided microwave percutaneous thermal ablation between November 2017 and October 2022, the authors provided a definition of …

A Case Of Epstein-Barr Virus Encephalitis And Orbital-Face Inflammation, Rui T Tang, Jose Gavito-Higuera, Claudia M Prospero Ponce

Faculty, Staff and Student Publications

Epstein-Barr virus (EBV) can cause follicular conjunctivitis, keratitis, oculoglandular syndrome, meningitis, and encephalitis. We report a 54-year-old Hispanic male who presented with right pupil-involved complete ophthalmoplegia, orbital and masticatory muscle inflammation, trigeminal enhancement, and new corneal infiltrate highly suggestive of EBV. Labwork was negative except for positive EBV polymerase chain reaction (PCR) in serum. Magnetic resonance imaging (MRI) of his brain and orbits with contrast showed enhancement of the right ganglion of the trigeminal nerve, oculomotor nerve, all extraocular muscles in the right orbit, and right masticatory and temporalis muscles and a right subacute lacunar infarct. The patient was diagnosed …

Implementation Of A Home Blood Pressure Monitoring Program For The Management Of Hypertensive Disorders Of Pregnancy, An Observational Study In British Columbia, Canada, Karen C Tran, Sabina Freiman, Tessa Chaworth-Musters, Susan Purkiss, Colleen Foster, Nadia A Khan, Wee Shian Chan

Faculty, Staff and Student Publications

BACKGROUND: COVID-19 pandemic has influenced health care delivery. We conducted an observational study to understand how obstetric medicine (ObM) physicians utilized home blood pressure monitoring (HBPM) to manage hypertension in pregnancy.

METHODS: Pregnant participants with risk factors or diagnosis of hypertensive disorders of pregnancy (HDP) were enrolled, May 2020-December 2021, and provided with validated home blood pressure (BP) monitor. ObM physicians completed questionnaires to elicit how home BP readings were interpreted to manage HDP.

RESULTS: We enrolled 103 people: 44 antepartum patients (33.5 ± 5 years, gestational age of 24 ± 5 weeks); 59 postpartum patients (35 ± 6 years, …

Fully Automated Deep Learning Based Auto-Contouring Of Liver Segments And Spleen On Contrast-Enhanced Ct Images, Aashish C Gupta, Guillaume Cazoulat, Mais Al Taie, Sireesha Yedururi, Bastien Rigaud, Austin Castelo, John Wood, Cenji Yu, Caleb O'Connor, Usama Salem, Jessica Albuquerque Marques Silva, Aaron Kyle Jones, Molly Mcculloch, Bruno C Odisio, Eugene J Koay, Kristy K Brock

Faculty, Staff and Student Publications

Manual delineation of liver segments on computed tomography (CT) images for primary/secondary liver cancer (LC) patients is time-intensive and prone to inter/intra-observer variability. Therefore, we developed a deep-learning-based model to auto-contour liver segments and spleen on contrast-enhanced CT (CECT) images. We trained two models using 3d patch-based attention U-Net ([Formula: see text] and 3d full resolution of nnU-Net ([Formula: see text] to determine the best architecture ([Formula: see text]. BA was used with vessels ([Formula: see text] and spleen ([Formula: see text] to assess the impact on segment contouring. Models were trained, validated, and tested on 160 ([Formula: see text]), …

Factors Associated With Early Mortality In Acute Type A Aortic Dissection—A Single-Centre Experience, Panagiotis Doukas, Nicola Dalibor, András Keszei, Jelle Frankort, Julia Krabbe, Rachad Zayat, Michael J Jacobs, Alexander Gombert, Payam Akhyari, Arash Mehdiani

Faculty, Staff and Student Publications

BACKGROUND: Acute aortic dissection type A (AADA) is a surgical emergency with relevant mortality and morbidity despite improvements in current management protocols. Identifying patients at risk of a fatal outcome and controlling the factors associated with mortality remain of paramount importance.

METHODS: In this retrospective observational study, we reviewed the medical records of 117 patients with AADA, who were referred to our centre and operated on between 2005 and 2021. Preoperative, intraoperative, and postoperative variables were analysed and tested for their correlation with in-hospital mortality.

RESULTS: The overall survival rate was 83%. Preoperatively, factors associated with mortality were age ( …

Risk Factors For Non-Healing Wounds—A Single-Centre Study, Daniel Wolny, Ladislav Štěpánek, Dagmar Horáková, Janet Thomas, Jana Zapletalová, Mihir Sanjay Patel

Faculty, Staff and Student Publications

Background: Chronic wounds present a significant clinical, social, and economic challenge. This study aimed to objectify the risk factors of healing outcomes and the duration of chronic wounds from various etiologies. Methods: Patients treated for non-healing wounds at the surgical outpatient clinic of the Olomouc Military Hospital were involved. Data from patients treated between 8/2021 and 9/2023 were selected. Patients were mostly treated as outpatients, with microbiological follow-up indicated in cases of advanced signs of inflammation. Results: There were 149 patients who met our selection criteria (the mean age was 64.4 years). Predominant causes of wounds involved diabetes (30.9%), post-trauma …

Tumor Treating Fields Increases Blood-Brain Barrier Permeability And Relative Cerebral Blood Volume In Patients With Glioblastoma, Michael Iv, Lewis Naya, Sajal Sanan, Samuel L Van Buskirk, Seema Nagpal, Reena P Thomas, Lawrence D Recht, Chirag B Patel

Faculty, Staff and Student Publications

BACKGROUND AND OBJECTIVE: 200 kHz tumor treating fields (TTFields) is clinically approved for newly-diagnosed glioblastoma (nGBM). Because its effects on conventional surveillance MRI brain scans are equivocal, we investigated its effects on perfusion MRI (pMRI) brain scans.

METHODS: Each patient underwent institutional standard pMRI: dynamic contrast-enhanced (DCE) and dynamic susceptibility contrast (DSC) pMRI at three time points: baseline, 2-, and 6-months on-adjuvant therapy. At each timepoint, the difference between T1 pre- versus post-contrast tumor volume (ΔT1) and these pMRI metrics were evaluated: normalized and standardized relative cerebral blood volume (nRCBV, sRCBV); fractional plasma volume (V

RESULTS: Among 13 pMRI datasets …

Quality Assurance For Stereotactic Body Radiation Therapy For Gynecologic Malignancies, Samuel N Andersen, Mark D Bonnen, Michelle S Ludwig, Shraddha M Dalwadi

Faculty, Staff and Students Publications

The use of stereotactic body radiation therapy (SBRT) is not well studied or reported in the treatment of gynecologic malignancies, despite its success in the definitive management of other cancer sites. This report describes a rigorous quality assurance process for patients to undergo dose escalation to the pelvis via stereotactic photon beam irradiation. Patients who receive SBRT must be ineligible for conventional brachytherapy boost and undergo comprehensive informed consent. Fiducial placement, bowel prep, Foley catheter placement with standardized bladder filling, computerized tomography (CT) simulation with whole-body immobilization, magnetic resonance imaging (MRI)-assisted target delineation, planning aims based on the established brachytherapy …

Social Determinants Of Health Framework To Identify And Reduce Barriers To Imaging In Marginalized Communities, Mohab M Elmohr, Zulqarnain Javed, Prachi Dubey, John E Jordan, Lubdha Shah, Khurram Nasir, Eric M Rohren, Christie M Lincoln

Faculty, Staff and Students Publications

Social determinants of health (SDOH) are conditions influencing individuals' health based on their environment of birth, living, working, and aging. Addressing SDOH is crucial for promoting health equity and reducing health outcome disparities. For conditions such as stroke and cancer screening where imaging is central to diagnosis and management, access to high-quality medical imaging is necessary. This article applies a previously described structural framework characterizing the impact of SDOH on patients who require imaging for their clinical indications. SDOH factors can be broadly categorized into five sectors: economic stability, education access and quality, neighborhood and built environment, social and community …

Home Blood Pressure Telemonitoring Technology For Patients With Asymptomatic Elevated Blood Pressure Discharged From The Emergency Department: Pilot Study, Karen C Tran, Meagan Mak, Laura M Kuyper, Jesse Bittman, Birinder Mangat, Heather Lindsay, Chad Kim Sing, Liang Xu, Hubert Wong, Martin Dawes, Nadia Khan, Kendall Ho

Faculty, Staff and Student Publications

BACKGROUND: Hypertension affects 1 in 5 Canadians and is the leading cause of morbidity and mortality globally. Hypertension control is declining due to multiple factors including lack of access to primary care. Consequently, patients with hypertension frequently visit the emergency department (ED) due to high blood pressure (BP). Telehealth for Emergency-Community Continuity of Care Connectivity via Home-Telemonitoring Blood Pressure is a pilot project that implements and evaluates a comprehensive home blood pressure telemonitoring (HBPT) and physician case management protocol designed as a postdischarge management strategy to support patients with asymptomatic elevated BP as they transition from the ED to home. …

Short-Term Outcomes And Efficacy Of Percutaneous Deep Vein Arterialization For No-Option Critical Limb Ischemia: A Systematic Review And Meta-Analysis, Roshanak Roustazadeh, Alexander Gombert, Julia Krabbe, Michael Jacobs, Panagiotis Doukas

Faculty, Staff and Student Publications

BACKGROUND: Percutaneous deep vein arterialization (pDVA) is considered a treatment modality in patients with no-option critical limb ischemia. However, there is still a paucity of evidence regarding its safety and efficacy.

DATA SOURCES: MEDLINE (via PubMed), Embase and Web of Science databases as well as the CENTRAL registry up to the end of June 2023.

METHODS: This review adhered to the PRISMA guidelines (PROSPERO registration no. CRD42023445171). The risk of bias was assessed using the methodological index for non-randomized studies (MINORS). Primary endpoints included technical success, overall survival and limb salvage during the follow-up. Amputation-free survival at 30 days, 6 …

Bacterial Contamination Of Platelet Products, Michael R Jacobs, Bowen Zhou, Aditi Tayal, Robert W Maitta

Faculty, Staff and Student Publications

Transfusion of bacterially contaminated platelets, although rare, is still a major cause of mortality and morbidity despite the introduction of many methods to limit this over the past 20 years. The methods used include improved donor skin disinfection, diversion of the first part of donations, use of apheresis platelet units rather than whole-blood derived pools, primary and secondary testing by culture or rapid test, and use of pathogen reduction. Primary culture has been in use the US since 2004, using culture 24 h after collection of volumes of 4-8 mL from apheresis collections and whole-blood derived pools inoculated into aerobic …

Predicting Radiotherapy Patient Outcomes With Real-Time Clinical Data Using Mathematical Modelling, Alexander P Browning, Thomas D Lewin, Ruth E Baker, Philip K Maini, Eduardo G Moros, Jimmy Caudell, Helen M Byrne, Heiko Enderling

Faculty, Staff and Student Publications

Longitudinal tumour volume data from head-and-neck cancer patients show that tumours of comparable pre-treatment size and stage may respond very differently to the same radiotherapy fractionation protocol. Mathematical models are often proposed to predict treatment outcome in this context, and have the potential to guide clinical decision-making and inform personalised fractionation protocols. Hindering effective use of models in this context is the sparsity of clinical measurements juxtaposed with the model complexity required to produce the full range of possible patient responses. In this work, we present a compartment model of tumour volume and tumour composition, which, despite relative simplicity, is …

Overcoming Resolution Attenuation During Tilted Cryo-Em Data Collection, Sriram Aiyer, Philip R Baldwin, Shi Min Tan, Zelin Shan, Juntaek Oh, Atousa Mehrani, Marianne E Bowman, Gordon Louie, Dario Oliveira Passos, Selena Đorđević-Marquardt, Mario Mietzsch, Joshua A Hull, Shuichi Hoshika, Benjamin A Barad, Danielle A Grotjahn, Robert Mckenna, Mavis Agbandje-Mckenna, Steven A Benner, Joseph A P Noel, Dong Wang, Yong Zi Tan, Dmitry Lyumkis

Faculty, Staff and Students Publications

Structural biology efforts using cryogenic electron microscopy are frequently stifled by specimens adopting "preferred orientations" on grids, leading to anisotropic map resolution and impeding structure determination. Tilting the specimen stage during data collection is a generalizable solution but has historically led to substantial resolution attenuation. Here, we develop updated data collection and image processing workflows and demonstrate, using multiple specimens, that resolution attenuation is negligible or significantly reduced across tilt angles. Reconstructions with and without the stage tilted as high as 60° are virtually indistinguishable. These strategies allowed the reconstruction to 3 Å resolution of a bacterial RNA polymerase with …

Comprehensive Analysis Of Craniopharyngioma: Epidemiology, Clinical Characteristics, Management Strategies, And Role Of Radiotherapy, Amir Mushtaq, Mohsin Fayaz, Abdul Rashid Bhat, Abbas F Abdul Hussein, Gianluca Ferini, Giuseppe Emmanuele Umana, Gianluca Scalia, Feroze Ahmad Mir, Aizul Khursheed, Bipin Chaurasia

Faculty, Staff and Student Publications

BACKGROUND/AIM: Craniopharyngiomas pose challenges in diagnosis and management due to their rare occurrence and diverse clinical manifestations. This study aimed to provide a comprehensive analysis of cranio-pharyngioma, including its epidemiological trends, clinical presentations, radiological characteristics, surgical interventions, and the role of radiotherapy.

PATIENTS AND METHODS: A retrospective observational study was conducted on 23 patients diagnosed with craniopharyngioma at our hospital from August 2017 to July 2019. Data regarding demographics, clinical presentation, radiological findings, surgical interventions, and adjuvant therapies were collected and analyzed.

RESULTS: Craniopharyngiomas exhibited a bimodal age distribution, with peaks in childhood and late adulthood. Clinical presentations varied between …

A Look-Up-Table Development To Facilitate Ct Simulation Of Mr-Linac Treatment, Neil Hughes, Travis C Salzillo, Sastry Vedam, Tze Yee Lim, Xin Wang, He Wang, Mustefa Mohammedsaid, Clifton D Fuller, Jihong Wang, Jinzhong Yang

Faculty, Staff and Student Publications

While current MR-Linac (MRL) treatment workflows utilize a large table overlay during CT simulation to convert indexing between the two machines, we developed a look-up-table (LUT) as an alternative approach. After populating the LUT, index conversion factors were verified at three separate table locations. The resultant root-mean-square isocenter shifts on the MRL were 0.04/0.08 cm, 0.08/0.07 cm, and 0.09/0.08 cm with/without using the table overlay during simulation in the lateral, longitudinal, and vertical directions, respectively, which is within registration tolerance. Clinical implementation of the LUT has resulted in a more efficient MRL treatment workflow while maintaining accurate patient setup.

Reporting Quality Of Endoscopic Colorectal Cancer Screening Randomized Controlled Trials: Adherence To Recommendations And Interventions, Fouad Jaber, Khalid Ahmed, Osama Hamid, Willie Mohammed Johnson, Saqr Alsakarneh, Abubaker O Abdalla, Yazan Abboud, Mouhand Mohamed, Dushyant Singh Dahiya, Shifa Umar, Mohamed Abdallah, Mohammad Bilal, Aasma Shaukat

Faculty, Staff and Student Publications

BACKGROUND AND AIMS: In 2013, the Standard Protocol Items: Recommendations for Interventional Trials (SPIRIT) steering group published recommendations to standardize reporting quality in randomized controlled trials (RCTs). We aim to assess adherence to SPIRIT reporting guidelines in RCTs on endoscopic colorectal cancer (CRC) screening and participants' adherence to trial protocols.

METHODS: We searched databases for RCTs evaluating flexible sigmoidoscopy or colonoscopy for CRC screening published in English language through September 2023. Each eligible study was evaluated using the 8 core SPIRIT statement areas, totaling 51 points. Each item received 1 point if it met the criteria and 0 points if …

Clinical Acceptability Of Automatically Generated Lymph Node Levels And Structures Of Deglutition And Mastication For Head And Neck Radiation Therapy, Sean Maroongroge, Abdallah Sr Mohamed, Callistus Nguyen, Jean Guma De La Vega, Steven J Frank, Adam S Garden, Brandon G Gunn, Anna Lee, Lauren Mayo, Amy Moreno, William H Morrison, Jack Phan, Michael T Spiotto, Laurence E Court, Clifton D Fuller, David I Rosenthal, Tucker J Netherton

Faculty, Staff and Student Publications

BACKGROUND AND PURPOSE: Auto-contouring of complex anatomy in computed tomography (CT) scans is a highly anticipated solution to many problems in radiotherapy. In this study, artificial intelligence (AI)-based auto-contouring models were clinically validated for lymph node levels and structures of swallowing and chewing in the head and neck.

MATERIALS AND METHODS: CT scans of 145 head and neck radiotherapy patients were retrospectively curated. One cohort (n = 47) was used to analyze seven lymph node levels and the other (n = 98) used to analyze 17 swallowing and chewing structures. Separate nnUnet models were trained and validated using the separate …

Harnessing Uncertainty In Radiotherapy Auto-Segmentation Quality Assurance, Kareem A Wahid, Jaakko Sahlsten, Joel Jaskari, Michael J Dohopolski, Kimmo Kaski, Renjie He, Enrico Glerean, Benjamin H Kann, Antti Mäkitie, Clifton D Fuller, Mohamed A Naser, David Fuentes

Faculty, Staff and Student Publications

One of the key contributions of this study is the reappropriation of standard DL outputs as a quality indicator to identify cases that clinicians should review further. The authors achieve this by applying an empirically derived threshold to the softmax output of their DL network, computing the mean of the thresholded score map (termed the HiS metric), and correlating it with standard geometric quality indices. When juxtaposed with a mean entropy — a commonly used measure of model output uncertainty — HiS consistently demonstrated a stronger correlation with the geometric indices, suggesting its superior ability to stratify cases needing additional …

Expert-Centered Evaluation Of Deep Learning Algorithms For Brain Tumor Segmentation, Katharina V Hoebel, Christopher P Bridge, Sara Ahmed, Oluwatosin Akintola, Caroline Chung, Raymond Y Huang, Jason M Johnson, Albert Kim, K Ina Ly, Ken Chang, Jay Patel, Marco Pinho, Tracy T Batchelor, Bruce R Rosen, Elizabeth R Gerstner, Jayashree Kalpathy-Cramer

Faculty, Staff and Student Publications

Purpose To present results from a literature survey on practices in deep learning segmentation algorithm evaluation and perform a study on expert quality perception of brain tumor segmentation. Materials and Methods A total of 180 articles reporting on brain tumor segmentation algorithms were surveyed for the reported quality evaluation. Additionally, ratings of segmentation quality on a four-point scale were collected from medical professionals for 60 brain tumor segmentation cases. Results Of the surveyed articles, Dice score, sensitivity, and Hausdorff distance were the most popular metrics to report segmentation performance. Notably, only 2.8% of the articles included clinical experts' evaluation of …

Survivorship, Outcomes, And Risk Factors For Conversion To Total Hip Arthroplasty After Revision Hip Arthroscopic Surgery In Obese Patients: Results At A Minimum 5-Year Follow-Up, Peng Li, Jie Luo, Zilong Zheng, Lu Meng, Anqi Zhang, Wei Cao, Xiaomei Gong

Faculty, Staff and Student Publications

OBJECTIVE: A high number of Non-Small Cell Lung Cancer (NSCLC) patients with brain metastasis who have not had surgery often have a negative outlook. Radiotherapy remains a most common and effective method. Nomograms were developed to forecast the cancer-specific survival (CSS) and overall survival (OS) in NSCLC individuals with nonoperative brain metastases who underwent radiotherapy.

METHODS: Information was gathered from the Surveillance, Epidemiology, and End Results (SEER) database about patients diagnosed with NSCLC who had brain metastases not suitable for surgery. Nomograms were created and tested using multivariate Cox regression models to forecast CSS and OS at intervals of 1, …

Breast Multiparametric Mri For Prediction Of Neoadjuvant Chemotherapy Response In Breast Cancer: The Bmmr2 Challenge, Wen Li, Savannah C Partridge, David C Newitt, Jon Steingrimsson, Helga S Marques, Patrick J Bolan, Michael Hirano, Benjamin Aaron Bearce, Jayashree Kalpathy-Cramer, Michael A Boss, Xinzhi Teng, Jiang Zhang, Jing Cai, Despina Kontos, Eric A Cohen, Walter C Mankowski, Michael Liu, Richard Ha, Oscar J Pellicer-Valero, Klaus Maier-Hein, Simona Rabinovici-Cohen, Tal Tlusty, Michal Ozery-Flato, Vishwa S Parekh, Michael A Jacobs, Ran Yan, Kyunghyun Sung, Anum S Kazerouni, Julie C Dicarlo, Thomas E Yankeelov, Thomas L Chenevert, Nola M Hylton

Faculty, Staff and Student Publications

Purpose To describe the design, conduct, and results of the Breast Multiparametric MRI for prediction of neoadjuvant chemotherapy Response (BMMR2) challenge. Materials and Methods The BMMR2 computational challenge opened on May 28, 2021, and closed on December 21, 2021. The goal of the challenge was to identify image-based markers derived from multiparametric breast MRI, including diffusion-weighted imaging (DWI) and dynamic contrast-enhanced (DCE) MRI, along with clinical data for predicting pathologic complete response (pCR) following neoadjuvant treatment. Data included 573 breast MRI studies from 191 women (mean age [±SD], 48.9 years ± 10.56) in the I-SPY 2/American College of Radiology Imaging …

Lifestyle Management Of Hypertension: International Society Of Hypertension Position Paper Endorsed By The World Hypertension League And European Society Of Hypertension, Fadi J Charchar, Priscilla R Prestes, Charlotte Mills, Siew Mooi Ching, Dinesh Neupane, Francine Z Marques, James E Sharman, Liffert Vogt, Louise M Burrell, Lyudmila Korostovtseva, Manja Zec, Mansi Patil, Martin G Schultz, Matthew P Wallen, Nicolás F Renna, Sheikh Mohammed Shariful Islam, Swapnil Hiremath, Tshewang Gyeltshen, Yook-Chin Chia, Abhinav Gupta, Aletta E Schutte, Britt Klein, Claudio Borghi, Colette J Browning, Marta Czesnikiewicz-Guzik, Hae-Young Lee, Hiroshi Itoh, Katsuyuki Miura, Mattias Brunström, Norm R C Campbell, Olutope Arinola Akinnibossun, Praveen Veerabhadrappa, Richard D Wainford, Ruan Kruger, Shane A Thomas, Takahiro Komori, Udaya Ralapanawa, Véronique A Cornelissen, Vikas Kapil, Yan Li, Yuqing Zhang, Tazeen H Jafar, Nadia Khan, Bryan Williams, George Stergiou, Maciej Tomaszewski

Faculty, Staff and Student Publications

Hypertension, defined as persistently elevated systolic blood pressure (SBP) >140 mmHg and/or diastolic blood pressure (DBP) at least 90 mmHg (International Society of Hypertension guidelines), affects over 1.5 billion people worldwide. Hypertension is associated with increased risk of cardiovascular disease (CVD) events (e.g. coronary heart disease, heart failure and stroke) and death. An international panel of experts convened by the International Society of Hypertension College of Experts compiled lifestyle management recommendations as first-line strategy to prevent and control hypertension in adulthood. We also recommend that lifestyle changes be continued even when blood pressure-lowering medications are prescribed. Specific recommendations based on …

Subnanometer-Resolution Structures Of The Grass Carp Reovirus Core And Virion, Melissa S Oh, Nikhil T Vettikattu, Harry Michael Baddour, Jennifer H Gross, Brian J Boyce, Mihir R Patel, Nicole C Schmitt, Clementino Arturo Solares, Jackson R Vuncannon, Azeem S Kaka

Faculty, Staff and Student Publications

OBJECTIVE: To describe our modifications to the submental island flap (SMIF) in a case series that demonstrates improved reproducibility, shortened length of stay (LOS), and reduced utilization of hospital resources.

STUDY DESIGN: This retrospective case series with chart review included adult patients who underwent resection of malignant or benign tumors resulting in lateral facial, parotid, or temporal bone defects, which were reconstructed with SMIF.

SETTING: A tertiary-care academic referral center.

METHODS: Retrospective case series included all adult patients who underwent SMIF reconstruction between March 2020 and August 2021. Patient demographic and clinical data were collected. Primary outcomes were measures of …