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Can A Ct Scan Detect A Blockage
Only at certain time: Bulky lesions in the retroperitoneum or masses growing off the bowel are frequently visualized. The same holds true for metastatic lesions to liver and lung. When we work up a patient for extensive surgical resection and want to be sure no metastatic focus is present to be addressed or might obviate the surgical procedure, a PET/CAT scan is employed where any malignant lesion lights up. ...Read more
Ct uses xrays taken an 360 degrees combined with a computer to see"inside" the body. The table moves as the xray tube and detectors spin around the patient 10 times a second or more! the image shows excellent soft tissue detail, enhanced with injection of intravenous contrast or oral contrast. This way the body is shown in slices, in any plane, usually axially, but ...Read more
Yes: Ct scans can certainly on occasion miss a small tumor, especially when they are down in the posterior fossa at the base of the skull. Mri scans are more sensitive and less likely to miss a tumor, but even they can on rare occasions miss one that shows up later. These scans are read by human beings, and they can miss something that is there, too. ...Read moreSee 1 more doctor answer
Not always: It is much harder to detect smaller lesions on non-contrast head ct, but large tumors causing swelling or pressure on other parts of the brain can usually be detected. Usually brain MRI with contrast is more sensitive and gives me a more detailed picture when I am trying to evaluate for brain tumors. ...Read moreSee 1 more doctor answer
Sometimes. : It depends on many factors, the size of the cancer, the organ it involves, technical factors with the study, etc. There are many variables. Remember each cancer starts as a single cell, so we can never completely exclude the diagnosis even when a ct is completely normal. Pet/ct can show cancers that are virtually impossible to see on ct, even with contrast. ...Read moreSee 1 more doctor answer
Can a CT scan detect pregnancy when having a CT scan for appendix? How early cam it detect a pregnancy ?
Shouldn't be used: Nearly all facilities will test for pregnancy with a blood test prior to performing a ct scan on a women of childbearing age due to potentially harmful radiation effects to a developing embryo or fetus. Whether they told you or not they probably checked at the time you were evaluated for appendicitis. It is rare to see a fetus on a ct scan because of this, but sometimes is seen in emergency scan. ...Read moreSee 1 more doctor answer
Yes: But not always. A ct scan is not a dynamic study and will not always show hernia defects unless there is something herniating through it. A better study is an ultrasound, which is done both standing and recumbent, and with maneuvers to increase intra-abdominal pressure. Additionally, evaluation by a surgeon would be worthwhile. ...Read moreSee 1 more doctor answer
Yes: Hh ( hiatal hernia) can be sen on the ct portion of the exam , sometimes. Most hhs slide .... Come and go based on patient positioning , eating, etc. Therefore not always seen. Note if the hh is metabolically active/"hot"...Your doctor may suggest endoscopy to look at the area in your distal esophagus. ...Read moreSee 2 more doctor answers
CT angiogram: A regular ct scan might detect a large aneurysm with calcium. A test that is designed specifically to look for aneurysms is the ct angiogram. With this test contrast goes into the vessels of the brain. If there is an aneurysm that is larger than 2 mm, it should be detected with this technique. ...Read more
Need contrast: Very difficult to see aneurysms in the brain without contrast. If you are concerned about this as a possibility you should ask your doctor about your risk. ...Read more
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