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difference between ct scan and colonoscopy

A 68-year-old member asked:
Dr. Eric Wang
Dr. Eric Wang answered
18 years experience Radiology
Depends: Mri and ct scans are noninvasive imaging techniques. They have their own inherent advantages and disadvantages, and to compare them would be too compl ... Read More
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7 thanks

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A 30-year-old female asked:
Dr. Arthur Heller
42 years experience Gastroenterology
Can't tell here: Small bowel cause? Gyn? Other? Get follow up.
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1 thank
A 56-year-old member asked:
Dr. Mary Maluccio
26 years experience Surgical Oncology
No: Depending on what you are getting the pet scan for, they are more or less sensitive. If the pet is being done as surveillance or colon cancer, it is g ... Read More
1
1 thank
A 52-year-old female asked:
Dr. Mark Hoepfner
38 years experience General Surgery
Possibly: It depends some on your age and past history. Diverticulitis, an infection of the colon, can sometimes show a lot of thickening on ct scan. That can b ... Read More
3
3 thanks
A 61-year-old female asked:
Dr. Mark Gujer
25 years experience Anesthesiology
The: Ct looks for an radiological finding that suggests abnormality and a brochoscopy actually looks at the living tissue with a camera and often takes a b ... Read More
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1 thank
A 45-year-old female asked:
Dr. Brian Wosnitzer
17 years experience Nuclear Medicine
PET/CT vs. CT: Pet/ct scan has 2 sets of images (pet ; ct images) which are fused for interpretation. The ct part provides anatomic info while the pet part provides ... Read More
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1 thank
A 31-year-old female asked:
Dr. Piotr Obara
13 years experience Radiology
Not same: Mri contast gadolinium does not contain iodine while ct contrast contains iodine. An allergic reaction to ct contrast does not mean that you will hav ... Read More
A 50-year-old member asked:
Dr. Felix Brizuela
31 years experience Neurology
Radiation: Pt scan uses radioactive glucose that is injected. The glucose is taken up by organs for energy, and we measure how active the tissue is. Dead tissu ... Read More
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3 thanks
A 49-year-old member asked:
Dr. David Dinhofer
40 years experience Radiology
A lot: Sorry to be so vague. They are very different in what can be seen and what can be diagnosed. Not enough room to go through the details. The Interne ... Read More
A 51-year-old member asked:
Dr. Mazen Ghani
23 years experience Radiology
A CT scan: Is performed without and/or with intravenous contrast/dye and evaluates the entirety of the body part being imaged. An angiogram is performed with in ... Read More
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2 thanks
A 57-year-old member asked:
Dr. Rishi Kumar
7 years experience Anesthesiology
Mechanism: Mri is based on the spin-spin splitting of hydrogen atoms inherent to all bodily tissues, namely in the form of water. The raw data produced from an M ... Read More
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2 thanks
A 36-year-old female asked:
Dr. Gerald Mandell
51 years experience Nuclear Medicine
Different chest CTs: High resolution chest CT usually with out intravenous contrast is used to define interstitial lung disease pattern, whether diffuse or localized proce ... Read More
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2 thanks
A 56-year-old member asked:
Dr. Carl Decker
23 years experience Radiology
Both use x-rays: A chest ct is a very detailed look at the lung, blood vessels, heart and bony thorax. It takes very thin (3-5mm) slices which allows for detailed ana ... Read More
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3 thanks
A 32-year-old member asked:
Dr. Sergio Casillas-Romero
Specializes in Colon and Rectal Surgery
None: Both tests the same: gallbladder function, but use different trace material.
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3 thanks
A 46-year-old member asked:
Dr. Mazen Ghani
23 years experience Radiology
MRI: An MRI scan is a general and broad term used to describe an MRI performed of a body part (head, abdomen, pelvis, wrist, etc.). An mrcp (magnetic reso ... Read More
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3 thanks
A 56-year-old member asked:
Dr. Jean Jeudy
16 years experience Radiology
MRI vs CT: MRI creates images from manipulation of strong magnetic fields, CT uses ionizing radiation just like xrays. CT is much faster and allows for a large s ... Read More
A 43-year-old member asked:
Dr. Jean Jeudy
16 years experience Radiology
MRI vs CT: MRI creates images from manipulation of strong magnetic fields, CT uses ionizing radiation just like xrays. CT is much faster and allows for a large s ... Read More
A 31-year-old female asked:
Dr. Paul Garrett
39 years experience Radiology
Technique: Routine CT with contrast is usu. done with images taken with about a 90 sec delay after contrast is given IV. Images are viewed as cross sections and ... Read More
A 35-year-old male asked:
Dr. Paul Velt
Dr. Paul Velt answered
41 years experience Diagnostic Radiology
What to look for: CT venogram is a study for the veins of the body. Looking for something in the veins. Site of injection may be different timing different. CT with co ... Read More
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1 thank
A 31-year-old female asked:
Dr. Piotr Obara
13 years experience Radiology
Not same: Mri contast gadolinium does not contain iodine while ct contrast contains iodine. An allergic reaction to ct contrast does not mean that you will hav ... Read More
1
1 thank
A 28-year-old male asked:
Dr. Clare Wilmot
Specializes in General Surgery
Depends on size: Can see the blood supply of tumour mass on a cat scan.. But small polyps do not show... Be does not see polyps, but does see tumour.. Colonoscopy with ... Read More
A 37-year-old member asked:
Dr. Carl Decker
23 years experience Radiology
Usually done togethr: A pet scan measures the uptake of glucose. The uptake of glucose is increased in most cancers. A ct scan is a basically a series of xrays over the are ... Read More
A 41-year-old member asked:
Dr. William Goldie
47 years experience Pediatric Neurology
Precision: Ct is a great screening tool for imaging the organs. Mri images certain tissues more accurately. Pet uses radioactive material to light up specific ... Read More
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1 thank
A 39-year-old member asked:
Dr. Michael Korona
32 years experience Interventional Radiology
See : Radiologyinfo.Org.
A 28-year-old male asked:
Dr. Myron Arlen
63 years experience Surgical Oncology
No: At 23 yo mild pain and gas will not be identified by CT and colonoscopy. The latter could pick up a possible polyp but not anything causing gas pain ... Read More
1
1 thank

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

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