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Differentiating IgG4-related sclerosing cholangiopathy from cholangiocarcinoma using CT and MRI: experience from a tertiary referring center.

Jordan Swensson, Temel Tirkes, Mark Tann, Enming Cui, Kumaresan Sandrasegaran,

PURPOSE:To compare the cross-sectional imaging findings of immunoglobulin G4-related sclerosing cholangiopathy (IgG4-SC) and cholangiocarcinoma (CCA). METHODS:Retrospective search of radiology and pathology databases identified 24 patients with IgG4-SC and over 500 patients with CCA from January 2009 to December 2016. Patients with no pre-treatment imaging studies available on PACS, non-contrasted imaging ... Read more >>

Abdom Radiol (NY) (Abdominal radiology (New York))
[2019, 44(6):2111-2115]

Cited: 0 times

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Peritoneal and Retroperitoneal Anatomy and Its Relevance for Cross-Sectional Imaging-Erratum.

Temel Tirkes, Kumaresan Sandrasegaran, Aashish A Patel, Margaret A Hollar, Juan G Tejada, Mark Tann, Fatih M Akisik, John C Lappas,

Radiographics (Radiographics : a review publication of the Radiological Society of North America, Inc)
[2019, 39(3):912]

Cited: 0 times

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CT texture analysis of pancreatic cancer.

Kumar Sandrasegaran, Yuning Lin, Michael Asare-Sawiri, Tai Taiyini, Mark Tann,

OBJECTIVES:We investigated the value of CT texture analysis (CTTA) in predicting prognosis of unresectable pancreatic cancer. METHODS:Sixty patients with unresectable pancreatic cancers at presentation were enrolled for post-processing with CTTA using commercially available software (TexRAD Ltd, Cambridge, UK). The largest cross-section of the tumour on axial CT was chosen to ... Read more >>

Eur Radiol (European radiology)
[2019, 29(3):1067-1073]

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Can functional parameters from hepatobiliary phase of gadoxetate MRI predict clinical outcomes in patients with cirrhosis?

Kumar Sandrasegaran, Enming Cui, Reem Elkady, Pauley Gasparis, Gitasree Borthakur, Mark Tann, Suthat Liangpunsakul,

OBJECTIVES:To determine the value of quantitative parameters of gadoxetate-enhanced magnetic resonance imaging (MRI) in predicting prognosis in patients with cirrhosis. METHODS:A cohort of 63 cirrhotic patients who had gadoxetate MRI and 2-year clinical follow-up was enrolled. Enhancement ratio (ER), contrast enhancement index (CEI) and contrast enhancement spleen index (CES) were ... Read more >>

Eur Radiol (European radiology)
[2018, 28(10):4215-4224]

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Functional liver image guided hepatic therapy (FLIGHT) with hepatobiliary iminodiacetic acid (HIDA) scans.

David E Long, Mark Tann, Ke Colin Huang, Gregory Bartlett, James O Galle, Yukie Furukawa, Mary Maluccio, John A Cox, Feng-Ming Spring Kong, Susannah G Ellsworth,

PURPOSE:Hepatobiliary iminodiacetic acid (HIDA) scans provide global and regional assessments of liver function that can serve as a road map for functional avoidance in stereotactic body radiation therapy (SBRT) planning. Functional liver image guided hepatic therapy (FLIGHT), an innovative planning technique, is described and compared with standard planning using functional ... Read more >>

Pract Radiat Oncol (Practical radiation oncology)
[2018, 8(6):429-436]

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Comparison of hepatic MDCT, MRI, and DSA to explant pathology for the detection and treatment planning of hepatocellular carcinoma.

Lauren M Ladd, Temel Tirkes, Mark Tann, David M Agarwal, Matthew S Johnson, Bilal Tahir, Kumaresan Sandrasegaran,

The diagnosis and treatment plan for hepatocellular carcinoma (HCC) can be made from radiologic imaging. However, lesion detection may vary depending on the imaging modality. This study aims to evaluate the sensitivities of hepatic multidetector computed tomography (MDCT), magnetic resonance imaging (MRI), and digital subtraction angiography (DSA) in the detection ... Read more >>

Clin Mol Hepatol (Clinical and molecular hepatology)
[2016, 22(4):450-457]

Cited: 1 time

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Estimation of radiation dosimetry for 68Ga-HBED-CC (PSMA-11) in patients with suspected recurrence of prostate cancer.

Mark A Green, Jacob A Eitel, James W Fletcher, Carla J Mathias, Mark A Tann, Thomas Gardner, Michael O Koch, Wendy Territo, Heather Polson, Gary D Hutchins,

This study was performed to estimate the human radiation dosimetry for [68Ga]Ga-HBED-CC (PSMA-11) (68Ga PSMA-11).Under an RDRC-approved research protocol, we evaluated the biodistribution and pharmacokinetics of 68Ga PSMA-11 with serial PET imaging following intravenous administration to nine prostate cancer patients in whom clinical [11C]acetate PET/CT exams had been independently performed ... Read more >>

Nucl. Med. Biol. (Nuclear medicine and biology)
[2017, 46:32-35]

Cited: 4 times

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Value of magnetic resonance imaging in evaluating the pancreatic allograft transplant complications.

Yubao Liu, Fatih Akisik, Temel Tirkes, Mark Tann, Kumaresan Sandrasegaran, S Gregory Jennings, Chen Lin, Bharat Kakarala, Jonathan A Fridell, John A Powelson, Changhong Liang,

To retrospectively investigate the value of magnetic resonance imaging (MRI) in detecting complications following pancreas transplant.Institutional review board approved this retrospective HIPAA-compliant study and waived informed patient consent. We identified all allograft pancreas transplant patients at our institution from 2001 to January 2014 who had all pertinent post-transplant imaging and ... Read more >>

Abdom Imaging (Abdominal imaging)
[2015, 40(7):2384-2390]

Cited: 2 times

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Does PET with CT Have Clinical Utility in the Management of Patients with Intraductal Papillary Mucinous Neoplasm?

Alexandra M Roch, Morgan R Barron, Mark Tann, Kumar Sandrasegar, Katheryn N Hannaford, Eugene P Ceppa, Michael G House, Nicholas J Zyromski, Attila Nakeeb, C Maximillian Schmidt,

BACKGROUND: Intraductal papillary mucinous neoplasms (IPMNs) are well-established pancreatic precancerous lesions. Indications for resection are outlined in the 2012 International Consensus Guidelines (ICG). Because of the low specificity of the ICG, many patients will undergo potentially unnecessary surgery for nonmalignant IPMNs. Several retrospective studies have reported that positron emission tomography ... Read more >>

J. Am. Coll. Surg. (Journal of the American College of Surgeons)
[2015, 221(1):48-56]

Cited: 3 times

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The Presence of Portal Vein Thrombosis Alters the Classic Enhancement Associated with Diagnosis of Hepatocellular Carcinoma.

Nadia K Umar, Maaz B Badshah, Kumar Sandrasegaran, Marwan Ghabril, Saurabh Agarwal, Mark Tann, Marco Lacerda, Paul Y Kwo,

AIMS: To determine whether the presence of portal vein thrombosis (PVT) where venous flow within the liver may be altered may delay the diagnosis of HCC and be associated with more advanced disease. We characterized the incidence and imaging characteristics of patients diagnosed with hepatocellular carcinoma in a cohort of ... Read more >>

Dig. Dis. Sci. (Digestive diseases and sciences)
[2015, 60(7):2196-2200]

Cited: 1 time

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Can radiologists and urologists reliably determine renal mass histology using standard preoperative computed tomography imaging?

M Francesca Monn, Paul T Gellhaus, Aashish A Patel, Timothy A Masterson, Mark Tann, Ronald S Boris,

To determine the extent to which radiologists and urologists can predict histology using multiphasic CT imaging.Patients with a preoperative multiphasic CT undergoing surgery for a renal mass were identified between 2003 and 2013. Tumors >10 cm, locally advanced or metastatic disease, and patients managed by reviewers were excluded. A survey and ... Read more >>

J. Endourol. (Journal of endourology)
[2015, 29(4):391-396]

Cited: 0 times

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The utility of secretin-enhanced MRCP in diagnosing congenital anomalies.

Kumaresan Sandrasegaran, Gregory A Cote, Bilal Tahir, Iftikhar Ahmad, Mark Tann, Fatih M Akisik, Chandana G Lall, Stuart Sherman,

PURPOSE: To assess the additional value of secretin-enhanced MRCP (SMRCP) over conventional MRCP in diagnosing divisum. METHODS: Retrospective HIPAA-compliant and IRB-approved review found 140 patients with SMRCP and ERCP correlation within 6 months of each other. All studies were anonymized and the SMRCP images (SMRCP image set) were separated from 2D ... Read more >>

Abdom Imaging (Abdominal imaging)
[2014, 39(5):979-987]

Cited: 5 times

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R.E.N.A.L. Nephrometry scoring: how well correlated are urologist, radiologist, and collaborator scores?

M Francesca Monn, Paul T Gellhaus, Timothy A Masterson, Aashish A Patel, Mark Tann, Dylan M Cregar, Ronald S Boris,

R.E.N.A.L. Nephrometry Score (NS) is an imaging-based (CT/MRI) scoring system commonly used by urologists to standardize the reporting of renal masses by enabling quantification of anatomical characteristics. We sought to examine the inter-rater correlation of NS between urologists, radiologists, and tumor-board collaborators.We identified adult patients undergoing partial or radical nephrectomy ... Read more >>

J. Endourol. (Journal of endourology)
[2014, 28(8):1006-1010]

Cited: 8 times

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Response criteria in oncologic imaging: review of traditional and new criteria.

Temel Tirkes, Margaret A Hollar, Mark Tann, Marc D Kohli, Fatih Akisik, Kumaresan Sandrasegaran,

There has been a proliferation and divergence of imaging-based tumor-specific response criteria over the past 3 decades whose purpose is to achieve objective assessment of treatment response in oncologic clinical trials. The World Health Organization (WHO) criteria, published in 1981, were the first response criteria and made use of bidimensional ... Read more >>

Radiographics (Radiographics : a review publication of the Radiological Society of North America, Inc)
[2013, 33(5):1323-1341]

Cited: 57 times

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Usefulness of conventional MRI sequences and diffusion-weighted imaging in differentiating malignant from benign portal vein thrombus in cirrhotic patients.

Kumaresan Sandrasegaran, Bilal Tahir, Kavitha Nutakki, Fatih M Akisik, Uttam Bodanapally, Mark Tann, Naga Chalasani,

OBJECTIVE: The objective of our study was to determine the value of diffusion-weighted imaging (DWI) and conventional MRI (non-DWI sequences) in differentiating benign portal vein thrombus (PVT) from malignant PVT in cirrhotic patients. MATERIALS AND METHODS: A retrospective search of the department of radiology's MRI database of examinations performed from ... Read more >>

AJR Am J Roentgenol (AJR. American journal of roentgenology)
[2013, 201(6):1211-1219]

Cited: 26 times

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Use of diffusion-weighted MRI to differentiate chronic pancreatitis from pancreatic cancer.

Kumaresan Sandrasegaran, Kavitha Nutakki, Bilal Tahir, Aginiprakash Dhanabal, Mark Tann, Gregory A Cote,

OBJECTIVE: The purpose of this study was to compare diffusion-weighted MRI (DWI) and conventional (non-DWI) MRI sequences in differentiating mass-forming chronic pancreatitis from pancreatic cancer. MATERIALS AND METHODS: A retrospective cohort study included 36 patients who underwent pancreatic resection for pancreatic cancer (n = 13) and chronic pancreatitis (n = ... Read more >>

AJR Am J Roentgenol (AJR. American journal of roentgenology)
[2013, 201(5):1002-1008]

Cited: 15 times

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Peritoneal and retroperitoneal anatomy and its relevance for cross-sectional imaging.

Temel Tirkes, Kumaresan Sandrasegaran, Aashish A Patel, Margaret A Hollar, Juan G Tejada, Mark Tann, Fatih M Akisik, John C Lappas,

It is difficult to identify normal peritoneal folds and ligaments at imaging. However, infectious, inflammatory, neoplastic, and traumatic processes frequently involve the peritoneal cavity and its reflections; thus, it is important to identify the affected peritoneal ligaments and spaces. Knowledge of these structures is important for accurate reporting and helps ... Read more >>

Radiographics (Radiographics : a review publication of the Radiological Society of North America, Inc)
[2012, 32(2):437-451]

Cited: 31 times

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State-of-the-art pancreatic MRI.

Kumaresan Sandrasegaran, Chen Lin, Fatih M Akisik, Mark Tann,

OBJECTIVE: The purpose of this article is to discuss the most current techniques used for pancreatic imaging, highlighting the advantages and disadvantages of state-of-the-art and emerging pulse sequences and their application to pancreatic disease. CONCLUSION: Given the technologic advances of the past decade, pancreatic MRI protocols have evolved. Most sequences ... Read more >>

AJR Am J Roentgenol (AJR. American journal of roentgenology)
[2010, 195(1):42-53]

Cited: 40 times

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Imaging of the pancreas with secretin enhancement.

Temel Tirkes, Fatih Akisik, Mark Tann, Numan Cem Balci,

Magnetic resonance cholangiopancreatography is a noninvasive imaging technique for evaluation of the pancreatic duct and the biliary tree. Secretin is a polypeptide hormone that has numerous physiological effects, including stimulation of the pancreatic secretion of bicarbonate-rich fluid and transient increase in the tone in the sphincter of Oddi. As a ... Read more >>

Top Magn Reson Imaging (Topics in magnetic resonance imaging : TMRI)
[2009, 20(1):19-24]

Cited: 8 times

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A pilot trial of serial 18F-fluorodeoxyglucose positron emission tomography in patients with medically inoperable stage I non-small-cell lung cancer treated with hypofractionated stereotactic body radiotherapy.

Mark A Henderson, David J Hoopes, James W Fletcher, Pei-Fen Lin, Mark Tann, Constantin T Yiannoutsos, Mark D Williams, Achilles J Fakiris, Ronald C McGarry, Robert D Timmerman,

Routine assessment was made of tumor metabolic activity as measured by 18F-fluorodeoxyglucose (FDG) positron emission tomography (PET) in Stage I non-small-cell lung cancer (NSCLC). This report describes PET correlates prospectively collected after stereotactic body radiotherapy (SBRT) for patients with medically inoperable NSCLC.14 consecutive patients with medically inoperable Stage I NSCLC ... Read more >>

Int. J. Radiat. Oncol. Biol. Phys. (International journal of radiation oncology, biology, physics)
[2010, 76(3):789-795]

Cited: 55 times

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Disconnection of the pancreatic duct: an important but overlooked complication of severe acute pancreatitis.

Kumaresan Sandrasegaran, Mark Tann, S Gregory Jennings, Dean D Maglinte, Sanjit D Peter, Stuart Sherman, Thomas J Howard,

In patients with severe acute pancreatitis, the percentage of necrosis of pancreatic glandular parenchyma is an important predictor of prognosis. However, little attention has been paid to necrosis of ductal epithelium, which may result in disconnection of the main pancreatic duct. In pancreatic duct disconnection, a viable segment of the ... Read more >>

Radiographics (Radiographics : a review publication of the Radiological Society of North America, Inc)
[2007, 27(5):1389-1400]

Cited: 28 times

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Distribution of stage I lung cancer growth rates determined with serial volumetric CT measurements.

S Gregory Jennings, Helen T Winer-Muram, Mark Tann, Jun Ying, Ian Dowdeswell,

PURPOSE: To retrospectively determine the distribution of stage I lung cancer growth rates with serial volumetric computed tomographic (CT) measurements. MATERIALS AND METHODS: This study was institutional review board approved and HIPAA compliant. The informed consent requirement was waived. Patients (n = 149) with stage I lung cancer who underwent ... Read more >>

Radiology (Radiology)
[2006, 241(2):554-563]

Cited: 38 times

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FDG-PET and stereotactic body radiotherapy (SBRT) for stage I non-small-cell lung cancer.

David J Hoopes, Mark Tann, James W Fletcher, Jeffrey A Forquer, Pei-Fen Lin, Simon S Lo, Robert D Timmerman, Ronald C McGarry,

PURPOSE: To investigate the utility of positron emission tomography (PET) in patients treated with stereotactic body radiotherapy (SBRT) for stage I non-small-cell lung cancer (NSCLC) on prospective institutional trials. PATIENTS AND METHODS: Fifty-eight patients with medically inoperable stage I NSCLC who participated in prospective phase I and II trials of ... Read more >>

Lung Cancer (Lung cancer (Amsterdam, Netherlands))
[2007, 56(2):229-234]

Cited: 87 times

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Positron emission tomography scans in postchemotherapy seminoma patients with residual masses: a retrospective review from Indiana University Hospital.

DeQuincy A Lewis, Mark Tann, Kenneth Kesler, Alan McCool, Richard S Foster, Lawrence H Einhorn,

J. Clin. Oncol. (Journal of clinical oncology : official journal of the American Society of Clinical Oncology)
[2006, 24(34):e54-5]

Cited: 10 times

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Advances in alimentary tract imaging.

Dean-Dt Maglinte, Kumaresan Sandrasegaran, Mark Tann,

Advances in imaging techniques are changing the way radiologists undertake imaging of the gastrointestinal tract and their ability to answer questions posed by surgeons. In this paper we discuss the technological improvements of imaging studies that have occurred in the last few years and how these help to better diagnosing ... Read more >>

World J. Gastroenterol. (World journal of gastroenterology)
[2006, 12(20):3139-3145]

Cited: 10 times

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