Advances in gastrointestinal imaging:
Gespeichert in:
| Format: | Buch |
|---|---|
| Sprache: | English |
| Veröffentlicht: |
Philadelphia [u.a.]
Elsevier Saunders
2007
|
| Schriftenreihe: | Radiologic clinics of North America
45,2 |
| Schlagworte: | |
| Online-Zugang: | Inhaltsverzeichnis |
| Beschreibung: | XII S., S. 231 - 394 zahlr. Ill., Kt. |
| ISBN: | 1416043632 9781416043638 |
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| adam_text | ADVANCES IN GASTROINTESTINAL IMAGING
Contents
Preface xi
Laura R. Carucci
Obesity Imaging
Impact of Obesity on Radiology 231
Raul N. Uppot
Obesity is impacting radiology departments throughout the country. Increasingly, the
ability to acquire and interpret images is compromised by a patient s body habitus. This
article provides radiologists with background information about obesity including the
definition of obesity, the prevalence of obesity, and the health and economic
implications; describes current problems and provides specific solutions related to
imaging obese patients using various modalities; and discusses the future of medical
imaging and obesity.
Imaging Evaluation Following Roux en Y Gastric Bypass Surgery for Morbid Obesity 247
Laura R. Carucci, Mary Ann Turner, and Jinxing Yu
As morbid obesity continues to increase in prevalence, bariatric surgery has become
a popular treatment option. Radiologists must be aware of how to perform and interpret
studies in this patient population. This article discusses the Roux en Y gastric bypass
procedure including the expected postoperative findings on upper gastrointestinal
examinations and CT and the potential complications that may occur.
Adjustable Laparoscopic Gastric Banding for Morbid Obesity: Imaging
Assessment and Complications 261
Laura R. Carucci, Mary Ann Turner, and Richard A. Szucs
Laparoscopic adjustable gastric banding (LAGB) is a safe and effective means of weight
loss for patients who have morbid obesity. LAGB currently is the least invasive surgical
treatment for morbid obesity. Radiologists must be aware of the expected postoperative
imaging findings, the optimal technique for radiologic assessment, and the post¬
operative complications that may occur. In addition, because band adjustment
procedures often are performed fluoroscopically, the radiologist may play a direct role in
the management of weight loss in patients following LAGB.
Multidetector CTand MR of the Small Bowel and Mesentery
Multidetector CT Angiography in the Diagnosis of Mesenteric Ischemia 275
Karen M. Horton and Elliot K. Fishman
Multidetector CT is an ideal tool for the diagnosis of acute and chronic mesenteric
ischemia. Advanced CT scanners and expertise in three dimensional imaging are
becoming increasingly widespread, opening the door to new opportunities and
challenges in the evaluation of patients suspected of having mesenteric ischemia. This
article reviews contrast administration and image acquisition protocols, the anatomy of
the mesenteric vasculature, the etiology of acute and chronic mesenteric ischemia, and
CT findings diagnostic for these conditions.
CT Enteroclysis: Techniques and Applications 289
Dean D. T. Maglinte, Kumaresan Sandrasegaran, and John C. Lappas
CT enteroclysis overcomes the individual deficiencies of both barium enteroclysis and
conventional CT and combines the advantages of both into one technique whose
clinical applicability has been simplified and made more reliable with multidetector CT
technology. This article examines the techniques of CT enteroclysis and presents an
overview of its clinical applications relative to other methods of small bowel imaging.
CT Enterography: Noninvasive Evaluation of Crohn s Disease and Obscure
Gastrointestinal Bleed 303
Scott R. Paulsen, James E. Huprich, and Amy K. Hara
CT enterography (CTE) is a noninvasive imaging test using neutral intraluminal contrast
and intravenous contrast to evaluate the small bowel. Multiphasic imaging is used in
evaluating obscure gastrointestinal bleeding (OGIB), and single phase enteric imaging
is used for all other indications, including Crohn s disease (CD). CTE findings of CD
include bowel wall thickening, mucosal hyperenhancement, and mural stratification.
CTE findings of angiodyplasias include a vascular tuft visible during arterial phase and
an early draining mesenteric vein. Early studies indicate that CTE is superior to barium
examination in the evaluation of CD and is complementary to capsule endoscopy in the
evaluation of OGIB.
MR Imaging of the Small Bowel 317
JeffFidler
Cross sectional imaging techniques such as CT and MR imaging have advantages over
traditional barium fluoroscopic techniques in their ability to visualize superimposed
bowel loops better and to improve visualization of extraluminal findings and
complications. This article discusses MR imaging of the small bowel with enterography
and enteroclysis techniques. It reviews the advantages, limitations, technique, and
indications and reviews the results that have been obtained in evaluating different
disease processes.
CTand MR Colonography (Virtual Colonoscopy)
Virtual Colonoscopy: Technique and Accuracy 333
Luis A. Landeras, Rizwan Aslam, and Judy Yee
Virtual colonoscopy (VC) has acquired an important role in evaluation of the colon. In
some situations it may be a safer method to visualize the colon effectively, or it may be
the only available option when other techniques have failed. This article reviews state
of the art VC technique and the results of current performance trials. It discusses the
rationale for using various colonic cleansing regimens for VC. It also discusses the two
distending agents for VC (room air and carbon dioxide) and presents practical tips for
administration and the role of antispasmodic drugs.
CT Colonography: Visualization Methods, Interpretation, and Pitfalls 347
Abraham H. Dachman, Philippe Lefere, Stefaan Gryspeerdt, and Martina Morin
Virtual colonoscopy interpretation is improving rapidly with the development of
efficient software using two dimensional, three dimensional (3D) endoluminal, and
3D novel views such as those that seem to cut the colon open and lay it flat for
interpretation. Comparison of these various views, comparisons of supine and prone
positioning, and comparisons of lung and soft tissue windows aid in the recognition of
various pitfalls of interpretation.
CT Colonography (Virtual Colonoscopy): A Practical Approach
for Population Screening 361
Perry J. Pickhardt and David H. Kim
CT colonography (CTC), also known as virtual colonoscopy, is a minimally invasive test
for the detection of colorectal polyps and masses. At the authors institution,
asymptomatic screening has been the overwhelming indication for CTC referral since
local third party coverage was initiated in April 2004. This practical review details the
authors current approach to CTC screening, which has evolved and matured over time.
It discusses the entire spectrum from program set up through patient disposition
following CTC examination. The authors hope this article will provide a roadmap for
radiologists who wish to institute a CTC screening program.
MR Colonography 377
Sonja Kinner and Thomas C. Lauenstein
Combining the advantages of unsurpassed soft tissue contrast and lack of ionizing
radiation, MR imaging of the gastrointestinal tract has become increasingly used
clinically. Both bowel inflammation and tumor disease of the large bowel can be well
visualized by means of MR colonography (MRC). This article describes current
techniques of MRC and gives an overview of its clinical outcome. Special focus is
directed toward the evaluation of patients acceptance of MRC.
Index 389
|
| adam_txt |
ADVANCES IN GASTROINTESTINAL IMAGING
Contents
Preface xi
Laura R. Carucci
Obesity Imaging
Impact of Obesity on Radiology 231
Raul N. Uppot
Obesity is impacting radiology departments throughout the country. Increasingly, the
ability to acquire and interpret images is compromised by a patient's body habitus. This
article provides radiologists with background information about obesity including the
definition of obesity, the prevalence of obesity, and the health and economic
implications; describes current problems and provides specific solutions related to
imaging obese patients using various modalities; and discusses the future of medical
imaging and obesity.
Imaging Evaluation Following Roux en Y Gastric Bypass Surgery for Morbid Obesity 247
Laura R. Carucci, Mary Ann Turner, and Jinxing Yu
As morbid obesity continues to increase in prevalence, bariatric surgery has become
a popular treatment option. Radiologists must be aware of how to perform and interpret
studies in this patient population. This article discusses the Roux en Y gastric bypass
procedure including the expected postoperative findings on upper gastrointestinal
examinations and CT and the potential complications that may occur.
Adjustable Laparoscopic Gastric Banding for Morbid Obesity: Imaging
Assessment and Complications 261
Laura R. Carucci, Mary Ann Turner, and Richard A. Szucs
Laparoscopic adjustable gastric banding (LAGB) is a safe and effective means of weight
loss for patients who have morbid obesity. LAGB currently is the least invasive surgical
treatment for morbid obesity. Radiologists must be aware of the expected postoperative
imaging findings, the optimal technique for radiologic assessment, and the post¬
operative complications that may occur. In addition, because band adjustment
procedures often are performed fluoroscopically, the radiologist may play a direct role in
the management of weight loss in patients following LAGB.
Multidetector CTand MR of the Small Bowel and Mesentery
Multidetector CT Angiography in the Diagnosis of Mesenteric Ischemia 275
Karen M. Horton and Elliot K. Fishman
Multidetector CT is an ideal tool for the diagnosis of acute and chronic mesenteric
ischemia. Advanced CT scanners and expertise in three dimensional imaging are
becoming increasingly widespread, opening the door to new opportunities and
challenges in the evaluation of patients suspected of having mesenteric ischemia. This
article reviews contrast administration and image acquisition protocols, the anatomy of
the mesenteric vasculature, the etiology of acute and chronic mesenteric ischemia, and
CT findings diagnostic for these conditions.
CT Enteroclysis: Techniques and Applications 289
Dean D. T. Maglinte, Kumaresan Sandrasegaran, and John C. Lappas
CT enteroclysis overcomes the individual deficiencies of both barium enteroclysis and
conventional CT and combines the advantages of both into one technique whose
clinical applicability has been simplified and made more reliable with multidetector CT
technology. This article examines the techniques of CT enteroclysis and presents an
overview of its clinical applications relative to other methods of small bowel imaging.
CT Enterography: Noninvasive Evaluation of Crohn's Disease and Obscure
Gastrointestinal Bleed 303
Scott R. Paulsen, James E. Huprich, and Amy K. Hara
CT enterography (CTE) is a noninvasive imaging test using neutral intraluminal contrast
and intravenous contrast to evaluate the small bowel. Multiphasic imaging is used in
evaluating obscure gastrointestinal bleeding (OGIB), and single phase enteric imaging
is used for all other indications, including Crohn's disease (CD). CTE findings of CD
include bowel wall thickening, mucosal hyperenhancement, and mural stratification.
CTE findings of angiodyplasias include a vascular tuft visible during arterial phase and
an early draining mesenteric vein. Early studies indicate that CTE is superior to barium
examination in the evaluation of CD and is complementary to capsule endoscopy in the
evaluation of OGIB.
MR Imaging of the Small Bowel 317
JeffFidler
Cross sectional imaging techniques such as CT and MR imaging have advantages over
traditional barium fluoroscopic techniques in their ability to visualize superimposed
bowel loops better and to improve visualization of extraluminal findings and
complications. This article discusses MR imaging of the small bowel with enterography
and enteroclysis techniques. It reviews the advantages, limitations, technique, and
indications and reviews the results that have been obtained in evaluating different
disease processes.
CTand MR Colonography (Virtual Colonoscopy)
Virtual Colonoscopy: Technique and Accuracy 333
Luis A. Landeras, Rizwan Aslam, and Judy Yee
Virtual colonoscopy (VC) has acquired an important role in evaluation of the colon. In
some situations it may be a safer method to visualize the colon effectively, or it may be
the only available option when other techniques have failed. This article reviews state
of the art VC technique and the results of current performance trials. It discusses the
rationale for using various colonic cleansing regimens for VC. It also discusses the two
distending agents for VC (room air and carbon dioxide) and presents practical tips for
administration and the role of antispasmodic drugs.
CT Colonography: Visualization Methods, Interpretation, and Pitfalls 347
Abraham H. Dachman, Philippe Lefere, Stefaan Gryspeerdt, and Martina Morin
Virtual colonoscopy interpretation is improving rapidly with the development of
efficient software using two dimensional, three dimensional (3D) endoluminal, and
3D novel views such as those that seem to cut the colon open and lay it flat for
interpretation. Comparison of these various views, comparisons of supine and prone
positioning, and comparisons of lung and soft tissue windows aid in the recognition of
various pitfalls of interpretation.
CT Colonography (Virtual Colonoscopy): A Practical Approach
for Population Screening 361
Perry J. Pickhardt and David H. Kim
CT colonography (CTC), also known as virtual colonoscopy, is a minimally invasive test
for the detection of colorectal polyps and masses. At the authors' institution,
asymptomatic screening has been the overwhelming indication for CTC referral since
local third party coverage was initiated in April 2004. This practical review details the
authors' current approach to CTC screening, which has evolved and matured over time.
It discusses the entire spectrum from program set up through patient disposition
following CTC examination. The authors hope this article will provide a roadmap for
radiologists who wish to institute a CTC screening program.
MR Colonography 377
Sonja Kinner and Thomas C. Lauenstein
Combining the advantages of unsurpassed soft tissue contrast and lack of ionizing
radiation, MR imaging of the gastrointestinal tract has become increasingly used
clinically. Both bowel inflammation and tumor disease of the large bowel can be well
visualized by means of MR colonography (MRC). This article describes current
techniques of MRC and gives an overview of its clinical outcome. Special focus is
directed toward the evaluation of patients' acceptance of MRC.
Index 389 |
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| spelling | Advances in gastrointestinal imaging guest ed. Laura R. Carucci Philadelphia [u.a.] Elsevier Saunders 2007 XII S., S. 231 - 394 zahlr. Ill., Kt. txt rdacontent n rdamedia nc rdacarrier Radiologic clinics of North America 45,2 Beeldverwerkende diagnostiek gtt Maagdarmstelsel gtt Gastrointestinal Diseases radiography Gastrointestinal system Radiography Carucci, Laura R. Sonstige oth Radiologic clinics of North America 45,2 (DE-604)BV000003369 45,2 HBZ Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=015713573&sequence=000002&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Advances in gastrointestinal imaging Radiologic clinics of North America Beeldverwerkende diagnostiek gtt Maagdarmstelsel gtt Gastrointestinal Diseases radiography Gastrointestinal system Radiography |
| title | Advances in gastrointestinal imaging |
| title_auth | Advances in gastrointestinal imaging |
| title_exact_search | Advances in gastrointestinal imaging |
| title_exact_search_txtP | Advances in gastrointestinal imaging |
| title_full | Advances in gastrointestinal imaging guest ed. Laura R. Carucci |
| title_fullStr | Advances in gastrointestinal imaging guest ed. Laura R. Carucci |
| title_full_unstemmed | Advances in gastrointestinal imaging guest ed. Laura R. Carucci |
| title_short | Advances in gastrointestinal imaging |
| title_sort | advances in gastrointestinal imaging |
| topic | Beeldverwerkende diagnostiek gtt Maagdarmstelsel gtt Gastrointestinal Diseases radiography Gastrointestinal system Radiography |
| topic_facet | Beeldverwerkende diagnostiek Maagdarmstelsel Gastrointestinal Diseases radiography Gastrointestinal system Radiography |
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