A5065557073- Thyroid Cancer Diagnosis and Treatment
- Radiology practices and education
- Head and Neck Anomalies
- Radiomics and Machine Learning in Medical Imaging
- MRI in cancer diagnosis
- Pancreatic and Hepatic Oncology Research
- Hepatocellular Carcinoma Treatment and Prognosis
- Radiation Dose and Imaging
- Thyroid and Parathyroid Surgery
- Ultrasound Imaging and Elastography
- Gastrointestinal disorders and treatments
- Ultrasound and Hyperthermia Applications
- Liver Disease Diagnosis and Treatment
- Salivary Gland Tumors Diagnosis and Treatment
- Liver Disease and Transplantation
- Advanced MRI Techniques and Applications
- Ultrasound in Clinical Applications
- Gallbladder and Bile Duct Disorders
- Innovations in Medical Education
- Diversity and Career in Medicine
- Abdominal vascular conditions and treatments
- Medical Imaging and Pathology Studies
- Medical Imaging Techniques and Applications
- Diverticular Disease and Complications
- Lanthanide and Transition Metal Complexes
Stanford University
2015-2024
Stanford Medicine
2010-2024
Palo Alto University
2020-2022
University of New Mexico
2019
Indiana University
2019
VA Palo Alto Health Care System
1998-2017
Mayo Clinic in Arizona
2017
Stanford Health Care
2004-2010
University Radiology
2009
Siemens (Germany)
2008
Abstract BACKGROUND: The authors report on the local control and toxicity of stereotactic body radiotherapy (SBRT) for patients with unresectable pancreatic adenocarcinoma. METHODS: Seventy‐seven adenocarcinoma pancreas received 25 gray (Gy) in 1 fraction. Forty‐five (58%) had locally advanced disease, 11 (14%) medically inoperable 15 (19%) metastatic 6 (8%) recurrent disease. Nine (12%) prior chemoradiotherapy. Sixteen (21%) between 45 to 54 Gy fractionated SBRT. Various gemcitabine‐based...
Comparison of Performance Characteristics American College Radiology TI-RADS, Korean Society Thyroid TIRADS, and Association GuidelinesWilliam D. Middleton1, Sharlene A. Teefey1, Carl C. Reading2, Jill E. Langer3, Michael Beland4, Margaret M. Szabunio5 Terry S. Desser6Audio Available | Share
To determine the relative frequency of various sonographic findings in papillary carcinoma thyroid.We retrospectively analyzed features 55 patients with proven thyroid. Sonographic were echo texture, cystic change, margin, contour, presence a peripheral halo, vascularity, and calcification pattern. Features classified as common (> or = 35% cases) uncommon (< 10% cases). Combinations also analyzed.Common included hypoechoic texture (86%), microcalcifications (42%) no calcifications (47%),...
Multiinstitutional Analysis of Thyroid Nodule Risk Stratification Using the American College Radiology Imaging Reporting and Data SystemWilliam D. Middleton1, Sharlene A. Teefey1, Carl C. Reading2, Jill E. Langer3, Michael Beland4, Margaret M. Szabunio5 Terry S. Desser6Audio Available | Share
Retained products of conception (RPOC) are a common and treatable complication after delivery or termination pregnancy. The pathologic diagnosis RPOC is made based on the presence chorionic villi, which indicates persistent placental trophoblastic tissue. In setting postpartum hemorrhage, however, distinguishing from bleeding related to normal lochia uterine atony can be clinically challenging. Ultrasonographic (US) evaluation particularly helpful in these patients, thickened endometrial...
Intraabdominal fat is a metabolically active tissue that may undergo necrosis through number of mechanisms. Fat common finding at abdominal cross-sectional imaging, and it cause pain, mimic findings acute abdomen, or be asymptomatic accompany other pathophysiologic processes. Common processes are present in include torsion an epiploic appendage, infarction the greater omentum, related to trauma pancreatitis. In addition, pathologic involve visualized computed tomography, including focal...
Thirty-two patients with symptoms referable to the brachial plexus were evaluated magnetic resonance (MR) imaging. Sixteen had undergone concurrent computed tomography (CT). MR imaging demonstrated normal findings in 16, 12 neoplasms, three cases of trauma, and one case possible neural edema. Of 16 on images, eight CT scans that also normal. In patient, images showed "mass" seen was actually a tortuous blood vessel. six neoplasm which available, revealed more extensive disease. other tumor,...
The purpose of this article is to analyze the sonographic appearance nodular Hashimoto thyroiditis.As part an ongoing multiinstitutional study, patients who underwent ultrasound examination and fine-needle aspiration one or more thyroid nodules were analyzed for multiple predetermined features. Patients completed a questionnaire, including information about function medication. (n = 61) with cytologic results consistent thyroiditis 64) included in study.The mean (+/- SD) diameter was 15 +/-...
The purpose of this article is to compare sonographic features benign and malignant nodules in patients with diffuse Hashimoto thyroiditis.As part an ongoing multiinstitutional study, who underwent ultrasound fine-needle aspiration one or more thyroid were analyzed for a variety predetermined features. Patients appearance consistent thyroiditis coexisting that could be confirmed by surgical pathologic analysis included the study.Among within thyroiditis, 84% (69/82) (35 nodular 32...
Purpose To evaluate for appearance-based discrimination in the selection of radiology residents. Method A deception study simulating resident process examined impact attractiveness and obesity on selection. Seventy-four core faculty from 5 academic departments reviewed mock residency applications September October 2017. Each application included demographic information a photograph, representing prespecified distribution facial obesity, combined with randomized supporting variables....
To identify and evaluate sonographic features suggestive of extracapsular extension in papillary thyroid cancer.Three board-certified radiologists blinded to the final pathologic tumor stage reviewed sonograms pathologically proven cases cancer for presence extension. The evaluated following features: capsular abutment, bulging normal contour, loss echogenic capsule, vascularity extending beyond capsule.A total 129 were identified. Of these, 51 excluded because lack preoperative sonography,...
The objective of our study was to determine the value using color and power Doppler sonography reveal extrathyroidal feeding arteries in detection abnormal parathyroid glands.Forty-four patients with primary hyperparathyroidism were imaged prospectively high-resolution gray-scale, flow, sonography. presence supplying adenomas noted. All underwent subsequent neck exploration. locations glands recorded.At surgery, 51 removed 44 patients. Sonography correctly revealed an adenoma 40 Likewise, 42...
To review the sonographic features and focused scanning techniques that may assist in preoperative localization of parathyroid adenomas patients with primary hyperparathyroidism.The findings were reviewed 54 58 consecutive pathologically proven adenomas. A systematic approach including real-time gray scale, color power Doppler, graded compression scale imaging was used all patients.Fifty-four (93%) correctly identified by sonography. Gray alone sufficient for identifying 26 (100%) large (>...
Abstract Macromolecular contrast media offer potential advantages over freely diffusible agents in magnetic resonance (MR) imaging outside the central nervous system. To identify an optimum molecular weight for macromolecular media, authors studied a novel agent, gadolinium diethylenetriaminepentaacetic acid polyethylene glycol (DTPA‐PEG), synthesized seven polymer (average) weights ranging from 10 to 83 kd. Twenty‐eight rabbits bearing V2 carcinoma thighs underwent T1‐weighted spin‐echo...
It is commonly held that punctate nonshadowing echogenic foci on sonography, often termed microcalcifications, represent psammoma bodies. We aimed to determine the validity of this supposition by correlating presence sonography with their at histopathologic examination.We examined 51 nodules (surgically proven papillary thyroid carcinoma) and examination. On latter, were for evidence psammomatous calcifications, dystrophic colloid. Two subspecialty-trained radiologists 2 25 years experience...