Portable Abdominal CT: Analysis of Quality and Clinical Impact in More Than 100 Consecutive Cases
Michael M. Maher1,
Peter F. Hahn1,
Debra A. Gervais1,
Brid Seoighe1,2,
James B. Ravenscroft1 and
Peter R. Mueller1
1 Department of Radiology, Division of Abdominal Imaging and Intervention,
Massachusetts General Hospital, 55 Fruit St., White 270, Boston, MA
02114.
2 Present address: Faculty of Health Sciences, University of Dublin, Trinity
College, Dublin 2, Ireland.
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Fig. 1. —Photograph of portable CT scanner (Tomoscan M, Philips Medical
Systems).
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Fig. 2. —Portable CT scan of 44-year-old man with fever shows normal
lobulations of pancreas (P). Only 49% of portable CT scans delineated this
feature.
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Fig. 3. —Contrast-enhanced portable CT scan of 50-year-old man shows
pancolitis, with heterogeneously enhancing colonic wall surrounding narrowed
lumen (arrows). Patient was successfully treated for pseudomembranous
colitis.
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Fig. 4A. —65-year-old man with intraabdominal abscesses after breakdown of
enteric anastomosis. Portable CT scan shows large extraluminal pelvic
collection (E) containing leaking gastrointestinal contrast material. This
collection was drained surgically.
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Fig. 4B. —65-year-old man with intraabdominal abscesses after breakdown of
enteric anastomosis. Repeat portable CT scan shows interloop abscess (I) from
peritoneal contamination.
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Fig. 4C. —65-year-old man with intraabdominal abscesses after breakdown of
enteric anastomosis. Stationary (nonportable) CT scan obtained during
percutaneous drainage shows deployment of drainage catheter. Note that
stationary CT scan exhibits better image quality.
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Fig. 5. —Portable CT scan obtained in 83-year-old woman with coagulopathy
shows large pelvic hematoma (H) of distinctly higher density than adjacent
uterus (U).
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Fig. 6. —Portable CT scan of 64-year-old woman shows extensive perihepatic
hematoma (arrows), incompletely evacuated during trauma surgery 1 day
before.
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Fig. 7A. —Comparison of stationary and portable CT scans in 47-year-old man
with acute pancreatitis. Contrast-enhanced stationary CT scan shows
peripancreatic fluid (arrow) but homogeneous pancreatic
enhancement.
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Fig. 7B. —Comparison of stationary and portable CT scans in 47-year-old man
with acute pancreatitis. Although features of acute pancreatitis, including
peripancreatic fluid (arrow), are visible on portable CT scan, they
are better seen on stationary CT scan (A).
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Fig. 8A. —Comparison of portable and stationary CT scans in 80-year-old woman
with pseudomembranous colitis. Portable CT scan shows early sigmoid colon
thickening (arrows). High-density ascites partially obscures colon
wall.
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Fig. 8B. —Comparison of portable and stationary CT scans in 80-year-old woman
with pseudomembranous colitis. Stationary CT scan obtained 4 days after
portable CT scan (A) shows layering hematocrit (open arrow)
and marked progression of mural abnormality (solid arrows). Patient
underwent colectomy for toxic megacolon.
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Fig. 9A. —73-year-old man with fever and sepsis. Contrast-enhanced portable CT
scans show portal vein gas (arrows, A) and pneumatosis coli
(arrows, B). Edematous but nonnecrotic bowel was found at
laparotomy.
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Fig. 9B. —73-year-old man with fever and sepsis. Contrast-enhanced portable CT
scans show portal vein gas (arrows, A) and pneumatosis coli
(arrows, B). Edematous but nonnecrotic bowel was found at
laparotomy.
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Fig. 10. —Portable CT scan obtained without IV contrast material in
50-year-old man with cardiac failure shows intraaortic balloon pump in lumen
of aorta (straight arrow). Note typical fan-shaped artifact from
intraaortic balloon pump (curved arrows). Gas bubble in ascites,
anterior to liver, was introduced during recent paracentesis.
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Copyright © 2004 by the American Roentgen Ray Society.
