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PET/CT colonography in patients with colorectal polyps: a feasibility study

To examine: (1) the feasibility of PET/CT colonography (PET/CTc) in patients with colorectal polyps; (2) the impact of metabolic information on CTc interpretation and, conversely, the impact of morphological information on PET characterisation of focal colorectal uptake. Ten patients with colorectal... Full description

Journal Title: European journal of nuclear medicine and molecular imaging 2007-10, Vol.34 (10), p.1594-1603
Main Author: Mainenti, Pier Paolo
Other Authors: Salvatore, Barbara , D'Antonio, Dario , De Falco, Teresa , De Palma, Giovanni Domenico , D'Armiento, Francesco Paolo , Bucci, Luigi , Pace, Leonardo , Salvatore, Marco
Format: Electronic Article Electronic Article
Language: English
Subjects:
Publisher: Germany: Springer
ID: ISSN: 1619-7070
Link: https://www.ncbi.nlm.nih.gov/pubmed/17492447
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title: PET/CT colonography in patients with colorectal polyps: a feasibility study
format: Article
creator:
  • Mainenti, Pier Paolo
  • Salvatore, Barbara
  • D'Antonio, Dario
  • De Falco, Teresa
  • De Palma, Giovanni Domenico
  • D'Armiento, Francesco Paolo
  • Bucci, Luigi
  • Pace, Leonardo
  • Salvatore, Marco
subjects:
  • Adult
  • Aged
  • Care and treatment
  • Colonic Polyps - diagnosis
  • Colonography, Computed Tomographic - methods
  • Colorectal cancer
  • Colorectal Neoplasms - diagnosis
  • CT imaging
  • Diagnostic tests
  • Feasibility Studies
  • Female
  • Humans
  • Image Enhancement - methods
  • Male
  • Medical research
  • Medicine, Experimental
  • Middle Aged
  • Nuclear medicine
  • Pets
  • Polyps (Pathology)
  • Positron-Emission Tomography - methods
  • Rectum - diagnostic imaging
  • Reproducibility of Results
  • Sensitivity and Specificity
  • Tomography
  • Tomography, X-Ray Computed - methods
ispartof: European journal of nuclear medicine and molecular imaging, 2007-10, Vol.34 (10), p.1594-1603
description: To examine: (1) the feasibility of PET/CT colonography (PET/CTc) in patients with colorectal polyps; (2) the impact of metabolic information on CTc interpretation and, conversely, the impact of morphological information on PET characterisation of focal colorectal uptake. Ten patients with colorectal polyps underwent PET/CTc, followed within 3 h by therapeutic conventional colonoscopy (CC). A radiologist and a nuclear medicine physician analysed the PET/CTc images. The agreement of morphological and metabolic information in the colon and rectum was evaluated. The sensitivity and specificity of PET, CT and PET/CT were calculated for colorectal polyps. Seventeen polypoid lesions were identified at CC: six< or =5 mm, six between 6 and 9 mm, and five > or =10 mm (four hyperplastic polyps, 11 tubular adenomas, one adenocarcinoma and one submucosal lipoma). A total of 20 scans (supine and prone) were performed in the ten patients: the agreement of morphological and metabolic information was excellent in 17 scans, good in two and moderate in one. PET/CTc showed a sensitivity of 91% for lesions > or =6 mm and a specificity of 100%. The metabolic information did not disclose any further polyps missed on CTc. The morphological information permitted correct classification of all eight instances of focal radiotracer uptake. PET/CTc is a feasible study. Adding a colonographic protocol to PET/CT images seems to allow correct characterisation of all cases of colorectal focal radiotracer uptake. The metabolic information does not seem to increase the accuracy of CTc.
language: eng
source:
identifier: ISSN: 1619-7070
fulltext: no_fulltext
issn:
  • 1619-7070
  • 1619-7089
url: Link


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titlePET/CT colonography in patients with colorectal polyps: a feasibility study
creatorMainenti, Pier Paolo ; Salvatore, Barbara ; D'Antonio, Dario ; De Falco, Teresa ; De Palma, Giovanni Domenico ; D'Armiento, Francesco Paolo ; Bucci, Luigi ; Pace, Leonardo ; Salvatore, Marco
creatorcontribMainenti, Pier Paolo ; Salvatore, Barbara ; D'Antonio, Dario ; De Falco, Teresa ; De Palma, Giovanni Domenico ; D'Armiento, Francesco Paolo ; Bucci, Luigi ; Pace, Leonardo ; Salvatore, Marco
descriptionTo examine: (1) the feasibility of PET/CT colonography (PET/CTc) in patients with colorectal polyps; (2) the impact of metabolic information on CTc interpretation and, conversely, the impact of morphological information on PET characterisation of focal colorectal uptake. Ten patients with colorectal polyps underwent PET/CTc, followed within 3 h by therapeutic conventional colonoscopy (CC). A radiologist and a nuclear medicine physician analysed the PET/CTc images. The agreement of morphological and metabolic information in the colon and rectum was evaluated. The sensitivity and specificity of PET, CT and PET/CT were calculated for colorectal polyps. Seventeen polypoid lesions were identified at CC: six< or =5 mm, six between 6 and 9 mm, and five > or =10 mm (four hyperplastic polyps, 11 tubular adenomas, one adenocarcinoma and one submucosal lipoma). A total of 20 scans (supine and prone) were performed in the ten patients: the agreement of morphological and metabolic information was excellent in 17 scans, good in two and moderate in one. PET/CTc showed a sensitivity of 91% for lesions > or =6 mm and a specificity of 100%. The metabolic information did not disclose any further polyps missed on CTc. The morphological information permitted correct classification of all eight instances of focal radiotracer uptake. PET/CTc is a feasible study. Adding a colonographic protocol to PET/CT images seems to allow correct characterisation of all cases of colorectal focal radiotracer uptake. The metabolic information does not seem to increase the accuracy of CTc.
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subjectAdult ; Aged ; Care and treatment ; Colonic Polyps - diagnosis ; Colonography, Computed Tomographic - methods ; Colorectal cancer ; Colorectal Neoplasms - diagnosis ; CT imaging ; Diagnostic tests ; Feasibility Studies ; Female ; Humans ; Image Enhancement - methods ; Male ; Medical research ; Medicine, Experimental ; Middle Aged ; Nuclear medicine ; Pets ; Polyps (Pathology) ; Positron-Emission Tomography - methods ; Rectum - diagnostic imaging ; Reproducibility of Results ; Sensitivity and Specificity ; Tomography ; Tomography, X-Ray Computed - methods
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descriptionTo examine: (1) the feasibility of PET/CT colonography (PET/CTc) in patients with colorectal polyps; (2) the impact of metabolic information on CTc interpretation and, conversely, the impact of morphological information on PET characterisation of focal colorectal uptake. Ten patients with colorectal polyps underwent PET/CTc, followed within 3 h by therapeutic conventional colonoscopy (CC). A radiologist and a nuclear medicine physician analysed the PET/CTc images. The agreement of morphological and metabolic information in the colon and rectum was evaluated. The sensitivity and specificity of PET, CT and PET/CT were calculated for colorectal polyps. Seventeen polypoid lesions were identified at CC: six< or =5 mm, six between 6 and 9 mm, and five > or =10 mm (four hyperplastic polyps, 11 tubular adenomas, one adenocarcinoma and one submucosal lipoma). A total of 20 scans (supine and prone) were performed in the ten patients: the agreement of morphological and metabolic information was excellent in 17 scans, good in two and moderate in one. PET/CTc showed a sensitivity of 91% for lesions > or =6 mm and a specificity of 100%. The metabolic information did not disclose any further polyps missed on CTc. The morphological information permitted correct classification of all eight instances of focal radiotracer uptake. PET/CTc is a feasible study. Adding a colonographic protocol to PET/CT images seems to allow correct characterisation of all cases of colorectal focal radiotracer uptake. The metabolic information does not seem to increase the accuracy of CTc.
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titlePET/CT colonography in patients with colorectal polyps: a feasibility study
authorMainenti, Pier Paolo ; Salvatore, Barbara ; D'Antonio, Dario ; De Falco, Teresa ; De Palma, Giovanni Domenico ; D'Armiento, Francesco Paolo ; Bucci, Luigi ; Pace, Leonardo ; Salvatore, Marco
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abstractTo examine: (1) the feasibility of PET/CT colonography (PET/CTc) in patients with colorectal polyps; (2) the impact of metabolic information on CTc interpretation and, conversely, the impact of morphological information on PET characterisation of focal colorectal uptake. Ten patients with colorectal polyps underwent PET/CTc, followed within 3 h by therapeutic conventional colonoscopy (CC). A radiologist and a nuclear medicine physician analysed the PET/CTc images. The agreement of morphological and metabolic information in the colon and rectum was evaluated. The sensitivity and specificity of PET, CT and PET/CT were calculated for colorectal polyps. Seventeen polypoid lesions were identified at CC: six< or =5 mm, six between 6 and 9 mm, and five > or =10 mm (four hyperplastic polyps, 11 tubular adenomas, one adenocarcinoma and one submucosal lipoma). A total of 20 scans (supine and prone) were performed in the ten patients: the agreement of morphological and metabolic information was excellent in 17 scans, good in two and moderate in one. PET/CTc showed a sensitivity of 91% for lesions > or =6 mm and a specificity of 100%. The metabolic information did not disclose any further polyps missed on CTc. The morphological information permitted correct classification of all eight instances of focal radiotracer uptake. PET/CTc is a feasible study. Adding a colonographic protocol to PET/CT images seems to allow correct characterisation of all cases of colorectal focal radiotracer uptake. The metabolic information does not seem to increase the accuracy of CTc.
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