Genevieve L. Bennett
New York University
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Featured researches published by Genevieve L. Bennett.
American Journal of Roentgenology | 2009
John Bonavita; Jason Mayo; James S. Babb; Genevieve L. Bennett; Thaira Oweity; Michael Macari; Joseph Yee
OBJECTIVE The purpose of this study was to evaluate morphologic features predictive of benign thyroid nodules. MATERIALS AND METHODS From a registry of the records of 1,232 fine-needle aspiration biopsies performed jointly by the cytology and radiology departments at a single institution between 2005 and 2007, the cases of 650 patients were identified for whom both a pathology report and ultrasound images were available. From the alphabetized list generated, the first 500 nodules were reviewed. We analyzed the accuracy of individual sonographic features and of 10 discrete recognizable morphologic patterns in the prediction of benign histologic findings. RESULTS We found that grouping of thyroid nodules into reproducible patterns of morphology, or pattern recognition, rather than analysis of individual sonographic features, was extremely accurate in the identification of benign nodules. Four specific patterns were identified: spongiform configuration, cyst with colloid clot, giraffe pattern, and diffuse hyperechogenicity, which had a 100% specificity for benignity. In our series, identification of nodules with one of these four patterns could have obviated more than 60% of thyroid biopsies. CONCLUSION Recognition of specific morphologic patterns is an accurate method of identifying benign thyroid nodules that do not require cytologic evaluation. Use of this approach may substantially decrease the number of unnecessary biopsy procedures.
Radiologic Clinics of North America | 2003
Genevieve L. Bennett; Emil J. Balthazar
Ultrasound is the initial imaging modality of choice for the evaluation of suspected acute gallbladder disorders, and is often sufficient for correct diagnosis. CT also plays a vital role, however, in the evaluation of acute gallbladder pathology. CT is particularly useful in situations where ultrasound findings are equivocal. CT is also extremely valuable in the assessment of suspected complications of acute cholecystitis, particularly emphysematous cholecystitis, hemorrhagic cholecystitis, and gallbladder perforation, which are often very difficult diagnoses to establish at sonography. If CT is the initial imaging test performed in a patient with abdominal pain of uncertain etiology, recognition of the various disorders described in this article may eliminate the need for further imaging and facilitate appropriate management.
Journal of Magnetic Resonance Imaging | 2013
Andrea S. Kierans; Genevieve L. Bennett; Thais C. Mussi; James S. Babb; Henry Rusinek; Jonathan Melamed; Andrew B. Rosenkrantz
To establish the utility of apparent diffusion coefficient (ADC) entropy in discrimination of benign and malignant adnexal lesions, using histopathology as the reference standard, via comparison of the diagnostic performance of ADC entropy with mean ADC and with visual assessments of adnexal lesions on conventional and diffusion‐weighted sequences.
Journal of The American College of Radiology | 2013
D. G. Mitchell; Marcia C. Javitt; Phyllis Glanc; Genevieve L. Bennett; Douglas L. Brown; Theodore J. Dubinsky; Mukesh G. Harisinghani; Robert D. Harris; Neil S. Horowitz; Pari V. Pandharipande; Harpreet K. Pannu; Ann E. Podrasky; Henry D. Royal; Thomas D. Shipp; Cary Lynn Siegel; Lynn L. Simpson; Jade J. Wong-You-Cheong; Carolyn M. Zelop
In the management of epithelial ovarian cancers, imaging is used for cancer detection and staging, both before and after initial treatment. The decision of whether to pursue initial cytoreductive surgery for ovarian cancer depends in part on accurate staging. Contrast-enhanced CT of the abdomen and pelvis (and chest where indicated) is the current imaging modality of choice for the initial staging evaluation of ovarian cancer. Fluorine-18-2-fluoro-2-deoxy-d-glucose PET/CT and MRI may be appropriate for problem-solving purposes, particularly when lesions are present on CT but considered indeterminate. In patients who achieve remission, clinical suspicion for relapse after treatment prompts imaging evaluation for recurrence. Contrast-enhanced CT is the modality of choice to assess the extent of recurrent disease, and fluorine-18-2-fluoro-2-deoxy-d-glucose PET/CT is also usually appropriate, as small metastatic foci may be identified. If imaging or clinical examination confirms a recurrence, the extent of disease and timing of disease recurrence then determines the choice of treatments, including surgery, chemotherapy, and radiation therapy. The American College of Radiology Appropriateness Criteria are evidence-based guidelines for specific clinical conditions that are reviewed annually by a multidisciplinary expert panel. The guideline development and revision include an extensive analysis of current medical literature from peer reviewed journals and the application of well-established methodologies (RAND/UCLA Appropriateness Method and Grading of Recommendations Assessment, Development, and Evaluation or GRADE) to rate the appropriateness of imaging and treatment procedures for specific clinical scenarios. In those instances where evidence is lacking or equivocal, expert opinion may supplement the available evidence to recommend imaging or treatment.
American Journal of Roentgenology | 2008
Elizabeth M. Hecht; Vivian S. Lee; Teerath Peter Tanpitukpongse; James S. Babb; Bachir Taouli; Samson Wong; Nirit Rosenblum; Jamie A. Kanofsky; Genevieve L. Bennett
OBJECTIVE The objective of our study was to retrospectively compare the degree of pelvic organ prolapse shown on dynamic true fast imaging with steady-state precession (FISP) versus HASTE sequences in symptomatic patients. MATERIALS AND METHODS Fifty-nine women (mean age, 57 years) with suspected pelvic floor dysfunction underwent MRI using both a sagittal true FISP sequence, acquired continuously during rest alternating with the Valsalva maneuver, and a sagittal HASTE sequence, acquired sequentially at rest and at maximal strain. Data sets were evaluated in random order by two radiologists in consensus using the pubococcygeal line (PCL) as a reference. Measurement of prolapse was based on a numeric grading system indicating severity as follows: no prolapse, 0; mild, 1; moderate, 2; or severe, 3. A comparison between sequences on a per-patient basis was performed using a Wilcoxons analysis with p < 0.05 considered significant. RESULTS Overall, 66.1% (39/59) of patients had more severe prolapse (>or= 1 degrees ) based on dynamic true FISP images, with 28.8% (17/59) of the cases of prolapse seen exclusively on true FISP images. Only 20.3% (12/59) of patients had greater degrees of prolapse on HASTE images than on true FISP images, with 10.2% (6/59) of the cases seen exclusively on HASTE images. A statistically significant increase in the severity of cystoceles (p < 0.01) and urethral hypermobility (p < 0.01)-with a trend toward more severe urethroceles (p < 0.07), vaginal prolapse (p < 0.09), and rectal descent (p < 0.06)-was shown on true FISP images. CONCLUSION Overall, greater degrees of organ prolapse in all three compartments were found with a dynamic true FISP sequence compared with a sequential HASTE sequence. Near real-time continuous imaging with a dynamic true FISP sequence should be included in MR protocols to evaluate pelvic floor dysfunction in addition to dynamic multiplanar HASTE sequences.
American Journal of Roentgenology | 2009
Genevieve L. Bennett; Teerath Peter Tanpitukpongse; Michael Macari; Kyunghee C. Cho; James S. Babb
OBJECTIVE The purpose of this study was to identify the CT features of mucocele of the appendix coexisting with acute appendicitis and to determine whether this entity can be differentiated from acute appendicitis without mucocele. MATERIALS AND METHODS CT scans of 70 patients (12 with acute appendicitis with mucocele, 29 with acute appendicitis without mucocele, 29 with a normal appendix) were retrospectively interpreted by two readers. The appendix was evaluated for maximal luminal diameter, cystic dilatation, luminal attenuation, appendicolith, mural calcification and enhancement, periappendiceal fat stranding, fluid, and lymphadenopathy. CT findings were compared by use of Mann-Whitney U and Fishers exact tests. Receiver operating characteristics analysis was performed to assess the diagnostic utility of appendiceal luminal diameter in differentiating acute appendicitis with from that without coexisting mucocele. RESULTS Cystic dilatation of the appendix and maximal luminal diameter achieved statistical significance (p < 0.05) for the diagnosis of acute appendicitis with mucocele. Mural calcification achieved statistical significance for one reader (p = 0.0049) and a statistical trend for the other (p < 0.1). A maximal luminal diameter greater than 1.3 cm had a sensitivity of 71.4%, specificity of 94.6%, and overall diagnostic accuracy of 88.2% for the diagnosis of acute appendicitis with mucocele. CONCLUSION Although there is overlap with acute appendicitis without mucocele, CT features suggestive of coexisting mucocele in patients with acute appendicitis include cystic dilatation of the appendix, mural calcification, and a luminal diameter greater than 1.3 cm.
Journal of The American College of Radiology | 2009
Rochelle F. Andreotti; Susanna I. Lee; Garry Choy; Sandra Allison; Genevieve L. Bennett; Douglas L. Brown; Phyllis Glanc; Mindy M. Horrow; Marcia C. Javitt; Anna S. Lev-Toaff; Ann E. Podrasky; Leslie M. Scoutt; Carolyn M. Zelop
Premenopausal women who present with acute pelvic pain frequently pose a diagnostic dilemma, exhibiting nonspecific signs and symptoms, the most common being nausea, vomiting, and leukocytosis. Diagnostic considerations encompass multiple organ systems, including obstetric, gynecologic, urologic, gastrointestinal, and vascular etiologies. The selection of imaging modality is determined by the clinically suspected differential diagnosis. Thus, a careful evaluation of such a patient should be performed and diagnostic considerations narrowed before a modality is chosen. Transvaginal and transabdominal pelvic sonography is the modality of choice when an obstetric or gynecologic abnormality is suspected, and computed tomography is more useful when gastrointestinal or genitourinary pathology is more likely. Magnetic resonance imaging, when available in the acute setting, is favored over computed tomography for assessing pregnant patients for nongynecologic etiologies because of the lack of ionizing radiation.
Radiographics | 2009
Silaja Yitta; Elizabeth M. Hecht; Chrystia M. Slywotzky; Genevieve L. Bennett
Although computed tomography (CT) is generally not the first-line imaging test of choice for the evaluation of female pelvic disorders, it is often the initial diagnostic examination performed in the emergency setting in patients who present with abdominal pain and nonspecific clinical symptoms. Multidetector CT coupled with reconstruction software permits isotropic voxel acquisition that can be used to generate two-dimensional multiplanar reformatted (MPR) images for evaluation of the female pelvis with no additional radiation exposure. Multidetector CT with MPR allows improved visualization of the normal anatomy and anatomic variants as well as greater diagnostic accuracy in the evaluation of the female pelvis. Although ultrasonography and magnetic resonance imaging remain the primary imaging modalities for the assessment of most female pelvic disorders, more accurate diagnosis of these disorders at multidetector CT may obviate additional imaging tests and allow more appropriate management.
Journal of Magnetic Resonance Imaging | 2011
Elizabeth M. Hecht; Richard K. G. Do; Stella K. Kang; Genevieve L. Bennett; James S. Babb; Timothy W.I. Clark
To determine if pretreatment apparent diffusion coefficient (ADC) of leiomyomas could predict volumetric response (VR) following uterine artery embolization (UAE).
Abdominal Imaging | 2003
Genevieve L. Bennett; W. B. Harvey; C. M. Slywotzky; B. A. Birnbaum
Ultrasound has traditionally served as the first-line imaging procedure of choice for evaluation of the female patient with suspected pelvic or gynecologic pathology. However, the etiology of patient symptoms often is not certain at the time of presentation. As the role of computed tomography (CT) in the evaluation of patients with acute abdominal pain continues to rapidly expand, CT may be performed as the initial diagnostic imaging procedure. Further, in the setting of primary gynecologic pathology, CT offers more comprehensive evaluation than ultrasound because of the larger scan field of view. It is, therefore, important to be able to recognize the CT features of acute gynecologic disorders and differentiate them from disorders of the gastrointestinal or genitourinary tract. With the advent of multidetector CT scanning, improved multiplanar reformatted images may serve as a useful adjunct to cross-sectional imaging. In this review, we present the CT findings in acute disorders of the female pelvis, including disorders of the adnexa, uterus, and postoperative/postpartum complications. We provide ultrasound correlation to show the complementary roles of these modalities in the evaluation of the female pelvis.