Maryam Rezvani

University of Utah, Salt Lake City, Utah, United States

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Publications (29)26.28 Total impact

  • [Show abstract] [Hide abstract]
    ABSTRACT: To evaluate the clinical utility of dual phase computed tomography (CT) for assessment of hepatic metastases in patients with metastatic melanoma. A retrospective case-control study of dual phase CT examinations consisting of late hepatic arterial and portal venous phases performed on patients with melanoma was undertaken. In 2010, 420 dual phase CT examinations were performed on 188 patients. Of these, 46 CT examinations on 24 patients with hepatic metastases were combined with 52 control studies for evaluation. Two blinded reviewers independently evaluated single portal venous phase alone and dual phase imaging on separate occasions. The presence of hepatic lesions, the conspicuity of the lesions, and the likelihood that the detected lesions were metastases was recorded. Agreement between readers, sensitivity and specificity was calculated. In no case was hepatic metastatic disease only apparent on arterial phase imaging. Arterially enhancing hepatic lesions only visible on the arterial phase or much more conspicuous on the arterial phase were present in 10 studies (10%), all of which were benign. Liver metastases were rated as being more accurately assessed on the portal venous phase in up to 100%. In a per scan analysis dual phase and venous phase imaging had similar sensitivities of 96% (95%, CI: 86-100) and 98% (95%, CI: 89-100), respectively. Single portal venous phase imaging is adequate for staging and surveillance in patients with metastatic melanoma.
    European journal of radiology 08/2013; · 2.65 Impact Factor
  • Akram M Shaaban, Maryam Rezvani
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    ABSTRACT: OBJECTIVE: To increase awareness of primary fallopian tube carcinoma (PFTC) and its relationship to serous epithelial ovarian carcinoma (EOC) and breast cancer. To review the characteristic imaging findings of PFTC thereby enabling radiologists to not only diagnose, but aid clinicians in staging, treatment planning and surveillance for recurrence. CONCLUSIONS: There is increasing evidence of a relationship between PFTC and breast cancer and the breast cancer susceptibility gene mutation. Furthermore, studies in breast cancer gene mutation carriers suggest serous EOC arises from the epithelial lining of the fallopian tube. These theories indicate that the incidence of fallopian tube carcinoma is underestimated. Increased awareness is particularly important for radiologists reviewing surveillance studies in breast cancer patients. PFTC has characteristic imaging features that can aid in its detection and differentiation from other pelvic masses. Imaging is also helpful in tumor staging, identifying patients who may benefit from neoadjuvant chemotherapy and detection of recurrence following treatment. This article discusses the history, pathology, and patterns of spread of fallopian tube carcinoma, as well as reviewing and illustrating the cross-sectional imaging findings.
    Abdominal Imaging 06/2012; · 1.91 Impact Factor
  • Maryam Rezvani, Akram Mohamed Shaaban
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    ABSTRACT: PURPOSE/AIM The aim of this exhibit is to review the role of MRI and MRCP in the diagnosis and surveillance of patients with primary sclerosing cholangitis (PSC). Upon completion of this exhibit we expect the reader to recognize the features of PSC and its complications on MRI/MRCP, as well as, provide a reasonable differential diagnosis. CONTENT ORGANIZATION Brief overview of the incidence, clinical features and pathophysiology of PSC MRI/MRCP findings of PSC MRI/MRCP appearance of the complications of PSC including infection, calculi, cirrhosis and cholangiocarcinoma. Review and illustrate the differential diagnosis of the imaging appearance of PSC SUMMARY This exhibit will review the MRI and MRCP appearance of PSC and its complications. The imaging differential diagnosis will be reviewed and illustrated.
    Radiological Society of North America 2011 Scientific Assembly and Annual Meeting; 11/2011
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    Maryam Rezvani, Akram Shaaban
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    ABSTRACT: A variety of benign and malignant entities affect the uterine cervix. These are discussed and illustrated. Cross-sectional and functional imaging can improve the accuracy of traditional clinical cervical cancer staging. Emphasis is placed on magnetic resonance imaging for initial staging and fused positron emission tomography-computed tomography for restaging and surveillance. The imaging appearance of benign cervical pathology is reviewed with ultrasonography as the first-line imaging modality and magnetic resonance imaging for problem solving in difficult cases.
    Topics in magnetic resonance imaging: TMRI 07/2010; 21(4):261-71.
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    Akram Shaaban, Maryam Rezvani
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    ABSTRACT: Ovarian cancer is the second most common gynecologic malignancy. It is the deadliest, largely owing to late stage at the time of diagnosis. Ultrasound is modality of choice in the evaluation of suspected adnexal masses. Magnetic resonance imaging is an excellent problem solver when an adnexal mass is indeterminate on ultrasound. Staging of ovarian cancer remains surgical, though preoperative imaging can identify inoperable patients and identify suspicious sites for intraoperative biopsy. This article reviews the use of different imaging modalities in the detection and staging of ovarian carcinoma, and discusses imaging indications, radiologic features, and the shortcomings of imaging.
    Topics in magnetic resonance imaging: TMRI 07/2010; 21(4):247-59.
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    ABSTRACT: OBJECTIVE: The purpose of this article is to describe and illustrate the CT findings of acute cholecystitis and its complications. CONCLUSION: CT findings suggesting acute cholecystitis should be interpreted with caution and should probably serve as justification for further investigation with abdominal ultrasound. CT has a relatively high negative predictive value, and acute cholecystitis is unlikely in the setting of a negative CT. Complications of acute cholecystitis have a characteristic CT appearance and include necrosis, perforation, abscess formation, intraluminal hemorrhage, and wall emphysema.
    American Journal of Roentgenology 06/2010; 194(6):1523-9. · 2.90 Impact Factor
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    ABSTRACT: To evaluate the correlation between change in attenuation and tumor metabolic activity assessed by using fluorodeoxyglucose (FDG) positron emission tomography (PET) in colon cancer liver metastases treated with yttrium 90 ((90)Y) radioembolization. This Health Insurance Portability and Accountability Act-compliant retrospective study was approved by the institutional review board; patient informed consent was waived. Unresectable chemorefractory colon cancer liver metastases treated with (90)Y radioembolization in 28 patients were evaluated at pre- and posttreatment multidetector computed tomographic (CT) and FDG PET scans. Maximum cross-sectional diameter, volume, and overall attenuation of target lesions were calculated. The percentage change (%Delta) in these parameters after treatment was calculated and correlated with the standardized uptake value (SUV) analysis at FDG PET. The accuracy of the radiologic parameters in helping predict response to treatment at FDG PET was assessed. Data were analyzed by using the Student t, Wilcoxon matched pair, Mann-Whitney, Spearman rank correlation, and chi(2) tests. The significance level was set at .05. Seventy-four metastatic lesions in 10 women and 18 men (mean age, 61.5 years +/- 14.3 [standard deviation]) were evaluated. Mean follow-up interval for multidetector CT after treatment was 30 days. A significant reduction in maximum cross-sectional diameter, volume, and attenuation was observed from pre- to posttreatment multidetector CT (P < .05). The %Delta in attenuation had higher correlation with %Delta in SUV (r = 0.61) than diameter (r = 0.39) or volume (r = 0.49) and also predicted the metabolic activity at FDG PET with higher sensitivity (P < .001). By using a threshold level of a reduction in attenuation of 15% or greater, attenuation showed 84.2% sensitivity and 83.3% specificity in predicting response at FDG PET evaluation. Changes in attenuation of colon cancer liver metastases treated with (90)Y radioembolization correlate highly with metabolic activity at FDG PET and may be useful as an early surrogate marker for assessing treatment response.
    Radiology 04/2010; 255(1):164-72. · 6.34 Impact Factor
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    Akram Shaaban, Maryam Rezvani
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    ABSTRACT: Ovarian cancer is the second most common gynecologic malignancy. It is the deadliest, largely owing to late stage at the time of diagnosis. Ultrasound is modality of choice in the evaluation of suspected adnexal masses. Magnetic resonance imaging is an excellent problem solver when an adnexal mass is indeterminate on ultrasound. Staging of ovarian cancer remains surgical, though preoperative imaging can identify inoperable patients and identify suspicious sites for intraoperative biopsy. This article reviews the use of different imaging modalities in the detection and staging of ovarian carcinoma, and discusses imaging indications, radiologic features, and the shortcomings of imaging.
    Clinical obstetrics and gynecology 04/2009; 52(1):73-93. · 2.06 Impact Factor
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    Maryam Rezvani, Akram Shaaban
    [Show abstract] [Hide abstract]
    ABSTRACT: A variety of benign and malignant entities affect the uterine cervix. These are discussed and illustrated. Cross-sectional and functional imaging can improve the accuracy of traditional clinical cervical cancer staging. Emphasis is placed on magnetic resonance imaging for initial staging and fused positron emission tomography-computed tomography for restaging and surveillance. The imaging appearance of benign cervical pathology is reviewed with ultrasonography as the first-line imaging modality and magnetic resonance imaging for problem solving in difficult cases.
    Clinical obstetrics and gynecology 04/2009; 52(1):94-111. · 2.06 Impact Factor
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    ABSTRACT: PURPOSE/AIM Review the spectrum of splenic abnormalities, correlating ultrasound, CT and MRI findings in order to understand the differential diagnostic considerations. Use principals from abdominal embryiology to understand disease processes involving the spleen/left upper quadrant. CONTENT ORGANIZATION Embryology Congenital anomalies & Heterotaxy syndromes Splenomegaly Cystic & Solid lesions Tumors & Tumorlike lesions Lymphoma & Infections Vascular disorders & Trauma Hematologic & Storage disorders SUMMARY At the end of this exhibit, the reader will be able to: Understand how to use information about the normal embryologic development of the spleen to explain pathologic processes and congenital variants in the left upper quadrant. Sort splenic disease processes in a step wise pattern approach by assessing the size or the spleen, then determining if the disease is a diffuse or infiltrative process versus a focal process, if the lesions are predominatly cystic or solid and solitary or multiple.
    Radiological Society of North America 2008 Scientific Assembly and Annual Meeting; 11/2008
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    ABSTRACT: Ovarian malignant germ cell tumors (OMGCTs) are heterogeneous tumors that are derived from the primitive germ cells of the embryonic gonad. OMGCTs are rare, accounting for about 2.6% of all ovarian malignancies, and typically manifest in adolescence, usually with abdominal pain, a palpable mass, and elevated serum tumor marker levels, which may serve as an adjunct in the initial diagnosis, monitoring during therapy, and posttreatment surveillance. Dysgerminoma, the most common malignant germ cell tumor, usually manifests as a solid mass. Immature teratomas manifest as a solid mass with scattered foci of fat and calcifications. Yolk sac tumors usually manifest as a mixed solid and cystic mass. Capsular rupture or the bright dot sign, a result of increased vascularity and the formation of small vascular aneurysms, may be present. Embryonal carcinomas and polyembryomas rarely manifest in a pure form and are more commonly part of a mixed germ cell tumor. Some OMGCTs have characteristic features that allow a diagnosis to be confidently made, whereas others have nonspecific features, which make them difficult to diagnose. However, imaging features, the patient's age at presentation, and tumor markers may help establish a reasonable differential diagnosis. Malignant ovarian germ cell tumors spread in the same manner as epithelial ovarian neoplasms but are more likely to involve regional lymph nodes. Preoperative imaging may depict local extension, peritoneal disease, and distant metastases. Suspicious areas may be sampled during surgery. Because OMGCTs are almost always unilateral and are chemosensitive, fertility-sparing surgery is the standard of care. ©RSNA, 2014.
    Radiographics 34(3):777-801. · 2.79 Impact Factor
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    ABSTRACT: PURPOSE/AIM - To review imaging features of hematopoietic tumors of the Genitourinary tract - To review the clinical implications and management of these tumors - To discuss differential diagnosis and mimics CONTENT ORGANIZATION - Introduction of hematologic neoplasms of the GU tract. - Review of the spectrum of hematopoietic tumors of the GU tract will be discussed including : - Renal and perirenal lymphoma / Adrenal lymphoma - Renal and perirenal leukemia - Renal and perirenal myeloma - Ovarian Leukemia - Ovarian lymphoma - Testicular lymphoma - Testicular leukemia - Castlemans disease - Prostate lymphoma - Special considerations: PET vs. CT for follow-up, role of WB MRI/DWI and PET/MR in future applications SUMMARY - Lymphoma is the most common hematologic neoplasm involving the GU tract; however other hematopoietic tumors including plasmacytoma/ myeloma, leukemia and castleman disease also can involve the GU system. Knowledge of the salient imaging features of these specific tumors and understanding their clinical implications for disease monitoring as pertinent to management is important.
    Radiological Society of North America 2013 Scientific Assembly and Annual Meeting;
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    ABSTRACT: PURPOSE/AIM The aim of this exhibit is to review the imaging features of both benign and malignant cardiac masses. Upon completion of this exhibit we expect the reader to recognize various cardiac masses with a location specific differential diagnosis. CONTENT ORGANIZATION Cardiac masses will be organized into categories based on location. The clinical, pathology and imaging features of each entity will be reviewed: 1. Intraluminal a. Valvular – fibroelastoma, endocarditis, caseous necrosis b. Non-valvular – bland thrombus, tumor thrombus, myxoma, hemangioma, crista terminalis ridge 2. Mural – fibroma, hemangioma, lipoma, tuberous sclerosis, angiosarcoma, metastasis 3. Pericardial – lymphoma, metastasis, fat necrosis, pheochromocytoma SUMMARY This exhibit will review a variety of benign and malignant cardiac masses emphasizing the distinguishing imaging features that enable accurate diagnosis.
    Radiological Society of North America 2012 Scientific Assembly and Annual Meeting;
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    ABSTRACT: PURPOSE/AIM The purpose of this exhibition is to 1- Review the pathophysiology of renal vascular and parenchymal causes of systemic hypertension in adults 2- Review the MDCT appearance of different causes of renal vascular and parenchymal hypertension CONTENT ORGANIZATION I. Renal vascular A. Arterial 1- Atherosclerotic renal artery stenosis 2- Fibromuscular Dysplasia 3- Renal artery entrapment syndrome 4-Vasculitis 5- Renal artery dissection 6- Subcapsular hematoma (page kidney) B. Venous 1- Renal vein entrapment (nutcracker syndrome) 2- Renal vein invasion 3- Arteriovenous malformation or fistulas II. Renal Parenchymal 1- Reflux nephropathy 2- Polycystic renal disease 3- Replacement lipomatosis 4- Perinephric fibrosis 5- Renal carcinoma 6- Renin-secreting tumors SUMMARY We will present a comprehensive review of MDCT appearance of different renal vascular and parenchymal causes of hypertension in adults.
    Radiological Society of North America 2012 Scientific Assembly and Annual Meeting;
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    ABSTRACT: PURPOSE/AIM The aim of this exhibit is to increase awareness and recognition of autoimmune pancreatitis. Upon completion of this exhibit we hope the reader will recognize the features of this entity on cross-sectional imaging both in the pancreas and remainder of the abdomen. In addition, crucial differential diagnoses will be illustrated. CONTENT ORGANIZATION Brief overview of the incidence, clinical features and pathophysiology of autoimmune pancreatitis Pancreatic manifestations on CT, MRI and PET/CT Extra-pancreatic imaging findings Differential diagnoses to consider and exclude when entertaining the diagnosis of autoimmune pancreatitis SUMMARY This exhibit will review autoimmune pancreatitis including pathophysiology, pancreatic and extra-pancreatic manifestations, as well as, imaging differential diagnosis.
    Radiological Society of North America 2011 Scientific Assembly and Annual Meeting;
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    ABSTRACT: PURPOSE/AIM Comprehensive review of the imaging features of different congenital and acquired conditions involving the portal venous system. CONTENT ORGANIZATION Congenital: Abernethy malformation Agenesis of PV or its branches Portal vein (PV) thrombosis Bland Tumor thrombus (HCC or Metastases) Portal hypertension PV in Budd Chiari syndrome Reversal of PV flow PV air PV Aneurysm Cavernous transformation of PV PV Trauma PV Angiitis in systemic lupus erythematosis Vascular shunts involving the PV Intra and extra-hepatic portosystemic Arterioportal Portoportal THAD SUMMARY Comprehensive review of congenital and acquired abnormalities of the portal vein. Different pathological entities will be discussed and imaging features will be demonstrated. Radiological examples utilizing different imaging modalities will be shown.
    Radiological Society of North America 2011 Scientific Assembly and Annual Meeting;
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    ABSTRACT: PURPOSE/AIM The aim of this exhibit is to demonstrate advantages of CTE over conventional radiologic and endoscopic methods for the evaluation of gastrointestinal neoplasms. Images will be presented as a case based review. CONTENT ORGANIZATION A)CTE technique for imaging of gastrointestinal neoplasms. Differences in protocols for the evaluation of small bowel and colon will be discussed. B) Discussion of image reconstruction and interpretation pertinent to the evaluation of gastrointestinal neoplasms. C) Examples of neoplastic lesions on CTE including adenocarcinoma, gastrointestinal stromal tumor (GIST), neuroendocrine tumor, lymphoma, metastasis and lipoma. D) Etiologies that may mimic neoplastic lesions will be discussed. SUMMARY A) CTE is an excellent method for the comprehensive evaluation of patients with suspected gastrointestinal neoplasms. B) CTE offers several distinct advantages over upper GI and SBFT barium studies rendering it the ideal primary method for diagnosing and evaluating gastrointestinal neoplasms, particularly in the small bowel.
    Radiological Society of North America 2008 Scientific Assembly and Annual Meeting;
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    ABSTRACT: PURPOSE/AIM Medical management of patients with Crohn disease is highly dependent on the level of disease activity. A gastroenterologist managing Crohn patients is therefore interested in not only the presence or absence of disease but also the extent and level of its activity. CTE is a robust method of imaging the intestinal and extraintestinal manifestations of Crohn disease and offers distinct advantages over other imaging modalities such as small bowel follow-through or wireless capsule endoscopy. These advantages and their implications in patient management will be presented. CONTENT ORGANIZATION A)Discussion of the distinguishing imaging features that affect medical treatment including specific findings indicating acute and chronic disease along with complications of advanced disease such as fistulas and abscesses.B) Discuss the importance of standardization of terminology in reporting. SUMMARY This exhibit will familiarize radiologists with relevant CTE findings of Crohn disease that affect medical management of these patients.
    Radiological Society of North America 2007 Scientific Assembly and Annual Meeting;
  • Maryam Rezvani, Akram Mohamed Shaaban
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    ABSTRACT: PURPOSE/AIM This exhibit will review the range of pathology affecting the fallopian tubes and their characteristic imaging appearance on ultrasound, computed tomography and magnetic resonance imaging. Imaging findings helping to distinguish each entity will be emphasized. CONTENT ORGANIZATION The presentation will be organized according to the following categories: 1. Anatomy and embryology 2. Hydrosalpinx, tubo-ovarian abscess, tuberculosis 3. Ectopic pregnancy & tubal torsion 4. Endometriosis & hematosalpinx 5. Benign & malignant tumors SUMMARY Review of fallopian tube pathology and the corresponding imaging appearance on ultrasound, computed tomography and magnetic resonance imaging with emphasis on distinguishing characteristics.
    Radiological Society of North America 2009 Scientific Assembly and Annual Meeting;
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    ABSTRACT: PURPOSE/AIM CT enterography (CTE), using neutral oral contrast agent and multislice CT, has become increasingly widespread as the primary imaging method for evaluation of the small bowel. This interactive exhibit will review the instances where CTE may fail and will offer remedy. CONTENT ORGANIZATION Potential points of failure: A) Patient preparation. B) Image acquisition C) Image display D) Image interpretation. Remedies: A) Patient and clinician education B) Appropriate protocol for the specific clinical indication D) Awareness of limitations of certain types of image display E) Knowledge of normal variants and pathologic findings. SUMMARY Advance knowledge of causes of failure in CTE and their remedies will minimize nondiagnostic studies and misdiagnosis. Awareness of these potential pitfalls is essential for gaining the confidence of referring physicians and establishing a robust and busy CTE service.
    Radiological Society of North America 2008 Scientific Assembly and Annual Meeting;