Gastrointestinal Notes From RSNA 1999
Written by Peter C. Buetow, M.D.
New developments in GI radiology centered around refining the application of increased speed available with multi-detector spiral CT and uses of abdominal MRI. The following observations deserve highlighting:
1. The increased speed of multi-detector CT with the availability of increased number of images during multi phase contrast injection was shown to improve staging of pancreatic adenocarcinoma as well as improved detection of hepatocellular carcinoma in the setting of cirrhosis. The detection of small hepatocellular carcinomas remains problematic with both for CT and MR.
- Abstract 103: Multiphase Hepatic CT with a Multislice Scanner
AUTHORS: W.D. Foley, MD, T.A. Mallisee, III, MD, C.R. Wilson, PhD , M.D. Hohenwalter, MD, F.A. Quiroz, MD, A.J. Taylor, MD.
- Abstract 104: Valuation of Small Hepatocellular Carcinoma with Multidetector-Row Helical CT of the Liver: The Value of Dual Phase Arterial Scanning
AUTHORS: M. Kadota, MD, Y. Yamashita, MD, Y. Nakayama, MD, K. Mitsuzaki, MD, A. Arakawa, MD, M. Takahashi, MD.
- Abstract 106: Multiphasic Imaging of Liver Neoplasms Using Multidetector CT
AUTHORS: I.R. Francis, MD, J.F. Platt, MD, R.A. Hansen, MD.
- Abstract 107: Multiphasic Imaging of the Pancreas and Pancreatic Adenocarcinoma Using Multidetector CT
AUTHORS: N.J. McNulty, MD, Ann Arbor, MI, I.R. Francis, MD o J.F. Platt, MD
- Abstract 109: The Usefulness of Double Arterial Phase Imaging of Multislice Helical CT for the Detection of Hypervascular Hepatocellular Carcinoma
AUTHORS: T. Murakami, MD, PhD, T. Kim, MD, S. Takahashi, MD, M. Takamura, MD, Y. Narumi, MD, H. Nakamura, MD, PhD, et al.
- Abstract 678: Computer-aided Diagnosis of Focal Liver Lesions in Sonograms: Analysis of Malignancy Based on Multiscale Echotexture Features
AUTHORS: H. Yoshida, PhD, D.D. Casalino, MD, B. Keserci, MSc, K. Doi, PhD.
Abstract Not Available
2. The use of SPIO-enhanced T2 weighted MR could offer better visualization and detection of liver lesions in certain cases, but probably does not affect patient care.
- Abstract 310: Detection of Hepatocellular Carcinoma in the Liver: Should Gadolinium-enhanced or SPIO-enhanced MR Imaging Be Preferred?
AUTHORS: D.O. Pauleit, MD, R. Bachmann, MD, R. Conrad, MD, B.P. Kreft, MD, J. Textor, MD, H.H. Schild, MD, et al.
- Abstract 312: Preoperative Detection of Hepatic Tumors: Comparison of Combined Unenhanced T1- and T2-weighted, Gadolinium-enhanced Triphasic, and Ferumoxides-enhanced MR vs Combined CTAP and Biphasic CTHA.
AUTHORS: H. Kondo, MD, M. Kanematsu, MD, H. Hoshi, MD, T. Murakami, MD, PhD, T. Kim, MD, M. Hori, MD.
3. Non-contrast CT was both more sensitive and specific than ultrasound in the detection of appendicitis. CT also offered alternative reasons for the patient symptoms. The use of contrast in this setting should be limited to equivocal cases. Inpatients without intradominal fat probably require IV contrast more frequently than patients with ample intraabdominal fat.
- Abstract 1402: Improved Accuracy of Helical CT for the Detection of Acute Appendicitis: The Contribution of Intravenous Contrast
AUTHORS: H. Al-Balas, MD, R.D. Ernst, MD, A. Kawashima, MD, C.I. Caskey, MD, J. Lee, MD, C.M. Sandler, MD.
Abstract Not Available
- Abstract 1405: Non-contrast Helical CT with Selective Use of Contrast in Acute Appendicitis
AUTHORS: D.J. Macksood, MD, G. Casola, MD, S.S. Torbati, MD, D.A. Guss, MD, C.G. Ferrett, MD, K.M. Richman, MD.
Abstract Not Available
4. Spiral CT angiography was shown to be as a good as angiography in the detection of pulmonary embolism and can even be used in the setting of pregnancy.
- Abstract 1596: Optimization of Small Pulmonary Artery Visualization for Pulmonary Embolism Detection with Multidetector CT
AUTHORS: S. Patel, MD, E.A. Kazerooni, MD, B.H. Gross, MD.
- Abstract 1597: Subsecond Scanning and Thin Collimation in the Diagnosis of Pulmonary Embolism: Assessment of Interobserver Variability
AUTHORS: M.J. Remy-Jardin, MD, PhD, J. Remy, MD, F. Baghaie, MD, F. Bonnel, MD, P. Masson, MD, A. Duhamel, PhD.
- Abstract 1598: The Effect of Imaging Modality on Patient Management in the Evaluation of Pulmonary Embolism
AUTHORS: T.L. Crawford, BS, C. Yoon, MD, PhD, A.M. Emerick, BS, K. Wolfson, MD, M.J. Beller, MD, J.G. Goldin, MBChB, PhD, et al.
- Abstract 1599: Anatomic Distribution of Pulmonary Emboli (PE) at Pulmonary Angiography in a Consecutive Series of Patients with Suspected Pulmonary Embolism
AUTHORS: J.W. Wallis, MD, E.J. Van Beek, MD, PhD, G.J. Den Heeten, MD, PhD.
- Abstract 1600: Spiral CT Angiography for Pulmonary Embolism: Comparison of Cine and Film-based Viewing
AUTHORS:
P.V. Kavanagh, MD, K.M. Link, MD, S.L. Fernandez, MD, M. D'Amore, MD, J.W. Wu, MD, C. Chiles, MD.
- Abstract 1601: Acute Pulmonary Embolism: The Optimal Scan Delay for Contrast Medium Injection in Spiral CT Angiography
AUTHORS:
I.J. Hartmann, MD, R.T. Lo, MD, W. De Monye, MD, P.M. Pattynama, MD, PhD, P.F. Van Waes, MD, PhD.
- Abstract 1602: Image Quality and Diagnostic Accuracy of CTA for Acute Pulmonary Embolism: Comparison of Various Protocols for Contrast Administration
AUTHORS:
M. Prokop, MD, C.M. Schaefer-Prokop, MD, J. Hahne, C.J. Herold, MD.
5. CT colonography was shown to be improved with a contrast enhancement in the detection and characterization of small polyps.
- Abstract 686: Intravenous Contrast Material Enhances the Diagnostic Accuracy of CT Colonography
AUTHORS:
M.M. Morrin, MD, J.B. Kruskal, MD, PhD, R.J. Farrell, MD, K.F. Reynolds, BS, RT(R), V.D. Raptopoulos, MD.
6. Interventional procedures were performed with increased speed using ultrasound or CT fluoroscopy for everything from liver abscesses to biopsies.
- Abstract 871: Computed Tomography Fluoroscopy(CTF): CT Intervention Reinvented
AUTHORS:
D.C. Gianfelice, MD, L. Lepanto, MD, P. Perreault, MD, C. Chartrand, MD.
- Abstract 873: Comparison of Sonographic and CT Guidance Modalities in Percutaneous Abdominal Interventional Procedures: Does CT Fluoroscopy Decrease Procedure Time?
AUTHORS:
D.H. Sheafor, MD, E.K. Paulson, MD, R.C. Nelson, MD.
- Abstract 875: Comparison of Real-Time CT Fluoroscopy versus Conventional CT Guidance in Nonvascular Interventional Procedures
AUTHORS:
V. Spies, MD, J. Link, MD, M. Strotzer, MD, W.R. Nitz, PhD, C. Altjohann, MD, S.G. Feuerbach, MD.
7. "Incidentalomas" of the liver (small; less than 1.5 centimeter lesions) are usually benign and are detected with increased frequency with spiral CT.
- Abstract 1029: Small Hypoattenuating Lesions in the Liver on Helical CT in Preoperative Patients with Gastric and Colorectal Cancer: Incidence, Significance, and Differentiating Features
AUTHORS:
H. Jang, MD, H.K. Lim, MD, W. Lee, MD, S.H. Kim, MD, J. Yun, D. Choi, MD.
8. Bowel enhancement after contrast injection with both CT and MR can be used to evaluate both activity and response to treatment of in the setting of inflammatory bowel disease.
- Abstract 85: MR Imaging of Crohn's Disease in the Gastrointestinal Tract
AUTHORS:
D. Koh, MBBS, Y. Miao, R.J. Chinn, MBBS, Z. Amin, MD, D. Westaby, MD, J.C. Healy, MD.
- Abstract 88: MR Imaging Assessment of Crohn's Disease Activity, Using Fat-suppressed T2-weighted Turbo Spin-Echo Sequences with a Negative Oral Contrast Material
AUTHORS:
F. Maccioni, MD, I. Carbone, MD, A. Viscido, MD, A. Ascarelli, MD, G. Marcelli, MD, P. Rossi, MD.
9. MRCP was shown to be as good as ERCP inpatients not requiring therapeutic intervention.
- Abstract 486: MRCP vs ERCP in the Diagnosis of Bile Duct Obstruction: A Randomized Clinical Trial
AUTHORS:
C. Reinhold, MD, A.N. Barkun, MD, J. Barkun, MD, L. Joseph, MD, E. Valois, M. Burke, MD.
- Abstract 487: Diagnostic Value of Three-dimensional Thin Slice MR Cholangiopancreatography versus Single Shot MR Cholangiopancreatography
AUTHORS:
F.A. Timmer, MD, J. Stoker, MD, A. Niemans, MD, M.C. Schoemaker, MD, W. Roolker, PhD, G.J. Den Heeten, MD, PhD.
© 2000, RadiologyWeb
|
Return to the Insights and Impressions home page