A5101535847- Liver Disease Diagnosis and Treatment
- Hepatocellular Carcinoma Treatment and Prognosis
- Liver Disease and Transplantation
- Organ Transplantation Techniques and Outcomes
- Pancreatitis Pathology and Treatment
- Pediatric Hepatobiliary Diseases and Treatments
- Adrenal and Paraganglionic Tumors
- Gallbladder and Bile Duct Disorders
- MRI in cancer diagnosis
- Pancreatic and Hepatic Oncology Research
- Congenital Anomalies and Fetal Surgery
- Abdominal Trauma and Injuries
- Cancer, Hypoxia, and Metabolism
- Hormonal Regulation and Hypertension
- Gastrointestinal disorders and treatments
- Advanced MRI Techniques and Applications
- Genetic and Kidney Cyst Diseases
- Medical Imaging and Pathology Studies
- Appendicitis Diagnosis and Management
- Amoebic Infections and Treatments
- Renal and Vascular Pathologies
- Cholangiocarcinoma and Gallbladder Cancer Studies
- Radiology practices and education
- Case Reports on Hematomas
- Renal cell carcinoma treatment
Sawai ManSingh Medical College and Hospital
2024
Icahn School of Medicine at Mount Sinai
2024
Massachusetts General Hospital
1989-2022
Harvard University
1997-2022
Harvard University Press
2004-2009
Emory University
2006
Services Australia
2006
University of Washington
2003
Good Samaritan Hospital
2001
Good Samaritan Hospital Medical Center
2001
In a retrospective study of adrenal masses evaluated with computed tomography (CT), lesion x-ray attenuation was compared size and radiologists' interpretations in discriminating benign lesions from malignant ones. Unenhanced CT coefficient were analyzed electronically 55 patients 66 masses. There 38 nonhyperfunctioning adenomas 33 28 22 patients. Primary extraadrenal malignancies present 45 the Three blinded readers characterized using seven-point scale certainty. Results subjected to...
Hepatobiliary-specific contrast agents are one of several classes available for magnetic resonance (MR) imaging the liver. These taken up by functioning hepatocytes and excreted in bile, their paramagnetic properties cause shortening longitudinal relaxation time (T1) liver biliary tree. The three that have been developed mangafodipir trisodium (Mn-DPDP), gadobenate dimeglumine (Gd-BOPTA), gadoxetic acid (Gd-EOB-DTPA). MR vary mode administration dose, mechanism cellular uptake, degree...
Background Angiotensin-converting enzyme 2, a target of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), demonstrates its highest surface expression in the lung, small bowel, and vasculature, suggesting abdominal viscera may be susceptible to injury. Purpose To report imaging findings patients with disease 2019. Materials Methods In this retrospective cross-sectional study, consecutively admitted single quaternary care center from March 27 April 10, 2020, who tested positive for...
PURPOSE: To determine the safety and efficacy of ferumoxtran 10–enhanced magnetic resonance (MR) imaging for diagnosis metastases to lymph nodes clinical usefulness 10 in nodal staging. MATERIALS AND METHODS: One hundred fifty-two patients were injected with 10. Readers independently evaluated precontrast MR images by using node size criteria subjective assessment other features. Ferumoxtran alone paired comparison. The diagnostic performances postcontrast receiver operating characteristic...
The purposes of this study were to evaluate the ability chemical shift MR imaging differentiate 1- 5-cm adrenal adenomas from metastases and compare subjective interpretation with several different quantitative measures.Forty-three patients 46 proved lesions (28 18 metastases) had a gradient-echo breath-hold technique echo time varied obtain in-phase out-of-phase images. Qualitative analysis images was done by three experienced observers, who reported their confidence in diagnosing benignity...
Twenty-one patients with hepatic hemangioma, five cysts, and 25 primary or metastatic cancer involving the liver were studied by magnetic resonance imaging (MRI). Benign lesions (hemangiomas, cysts) diagnosed noninvasively CT, radionuclide studies, and/or sonography confirmed follow-up examinations more than 1 year later. Malignant biopsy in every case. Identical multisection/multiecho techniques used all to obtain T1-and T2-weighted spin-echo (SE) inversion-recovery (IR) images. MRI...
The purpose of this study was to administer ultrasmall superparamagnetic iron oxide (USPIO) and compare changes in signal intensity lymph nodes patients with primary abdominal pelvic malignancies. Also, we correlated radiographic pathologic findings. Nineteen proven or cancer (prostatic [n = 10]; colonic 5]; endometrial 1]; Merkel cell tumor lymphoma seminoma 1]) were enrolled as part our phase II III clinical trials. In these patients, 49 (mean size, 1.4 cm) revealed on CT MR imaging...
To retrospectively assess the accuracy of four-section multi-detector row computed tomography (CT) in evaluation renal transplant donors when scans are read by one multiple readers with varied levels expertise, using surgery as reference standard.This retrospective study was approved institutional review board and complied Health Insurance Portability Accountability Act. Informed consent waived. Between October 1999 March 2003, 94 (42 men, 52 women; mean age, 44 years) underwent CT....
Computed tomographic (CT) scans in 30 patients who had undergone percutaneous drainage for acute complicated pancreatitis were retrospectively studied to determine the role of drainage. Fifty-nine collections percutaneously drained these patients. Eighty-one catheters placed 59 (average, 1.4 per patient). Patients required an average three catheter manipulations, seven abdominal CT scans, 5 weeks drainage, a mean hospital stay 82 days (range, 42-122 days), and intensive care unit 31 1-62...
Imaging of pancreatic neoplasms: comparison MR and CTE Steiner, DD Stark, PF Hahn, S Saini, JF Simeone, PR Mueller, J Wittenberg JT FerrucciAudio Available | Share
The authors discuss the appearances of adrenal diseases characterizable with magnetic resonance (MR) imaging (pheochromocytomas, hemorrhage, cysts, adenomas, myelolipomas, and metastases), new techniques, differentiation benign from malignant lesions. Most pheochromocytomas appear markedly hyperintense relative to liver on T2-weighted images. However, this appearance is not specific, since metastases adenomas may have similar features. Occasionally, be iso- or hypointense One techniques for...
Extracranial hematomas have variable CT appearances and may be confused with other entities. MR imaging of 12 patients intraabdominal or intrapelvic hemorrhages showed that develop a unique appearance after 3 weeks. Nine imaged this time all characteristic concentric-ring configuration, thin, dark peripheral rim on pulse sequences bright inner ring most distinctive T1-weighted images. Six during the first weeks failed to show architecture. The concentric rings in images chronic allowed...
Therapeutic strategies for treating patients with liver failure, particularly optimization of transplantation, are constantly being refined, the goal improving long-term survival lowest risk toxicity in donors and recipients. Optimal planning transplantation requires a multidisciplinary collaboration between radiologist, hepatologist, clinical oncologist, transplant surgeon. Radiologists play an essential role identifying normal abnormal variant anatomy other conditions that may be present,...
PURPOSE: To compare prospectively the diagnostic accuracy of T2-weighted conventional spin-echo (SE) and fast SE magnetic resonance (MR) imaging for differentiation benign (hemangiomas or cysts) from malignant (metastases hepatocellular carcinoma) liver lesions. MATERIALS AND METHODS: Fifty-three patients with 55 confirmed lesions (20 hemangiomas, eight cysts, 22 metastases, four carcinomas, one fibrous histiocytoma) underwent (repetition time msec/echo [TE] msec = 3,100/ 80,160)...
We studied the feasibility of using MR imaging at 0.6 T to differentiate small hepatic hemangiomas from metastases on basis quantitative criteria. Ninety-two liver masses up 5 cm in diameter, including 51 proved (mean, 1.9 +/- 1.1 cm) and 41 1.2 were analyzed. Lesions divided into three groups size (less than or equal 1 cm, greater 1- less 2 2- cm). The ability distinguish was examined by differences lesion/liver signal-intensity ratio (SIR) contrast-to-noise (CNR) T2-weighted images (SE...
Malignant obstruction at the biliary hilum is a challenging problem for percutaneous management because of anatomy hilum, which facilitates spread tumor into multiple radicles. Metallic self-expanding stents were used in 22 patients with hilar malignancies. Sixteen had focal common hepatic duct strictures, and six multisegmental disease. Stents placed system single transhepatic approach 16 strictures; stent placement right left ducts was performed bilateral five one patient. Metal occlusion...
Many studies have suggested that Hounsfield measurements on unenhanced CT can reliably differentiate adrenal adenomas from nonadenomas using a scanner-independent threshold level. The purpose of this study was to determine whether establishment for differentiation is technically feasible.Surgically resected tumor specimens (total, seven; adenomas, three; nonadenomas, four; size range, 17-76 mm), were placed in an anthropomorphic phantom. Lesion scanned with one MDCT and two single-detector...