Question 1

what is the difference between normal and grossly normal on a ct scan report? the radiologist listed most of my organs as grossly normal, but a few are just listed as normal.

Accepted Answer

Same: For all intents and purposes, normal and grossly normal are the same. "Gross" is a medical term that usually means "visible", but has become a sort of medical colloquialism meaning "from what I can see this is --- normal"

Question 2

what is the difference between ct and xray?

Accepted Answer

Contrast: An xray (also called radiograph) is done by sending xrays through a body part but only in one projection so there is overlap of body parts and contrast is not very good. Ct also uses xrays but the final cross-sectional image (slice) is reconstructed from a combination of xrays shot from multiple directions/projections; therefore, there is no overlap of body parts and much better contrast.

Question 3

what is the difference between a ct venogram and ct with contrast?

Accepted Answer

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 contrast has contrast material also. Timing also different

Question 4

what is the difference between an mri and a ct?

Accepted Answer

MRI/CT: A CT scan uses x-ray radiation to generate an image.  An MRI uses magnetic fields "tuned" to the frequency of protons in the body.  Since each scan essentially measures a different property of tissues in the body, they are complementary tests.  That is why if one doesn't provide a definitive answer, often the other will be ordered.

Question 5

what is the difference between normal ct and pet ct scan?

Accepted Answer

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 functional info (glucose distribution/metabolic activity).  Sometimes the ct part of pet/ct is done as low dose ct without IV or oral contrast.  These images are suboptimal compared to a separate dedicated ct with hi dose ; IV and oral contrast.

Question 6

what is the difference between a ct and a ct angiogram?

Accepted Answer

Adding contrast: Computerized axial tomography CAT or CT is a form of x-ray imaging without using any dye or contrast. If the radiologist injects a dye or contrast to highlight the blood vessels during the procedure that would be CT angiogram.

Question 7

what is the difference between ct and mri scan?

Accepted Answer

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 MRI scan must undergo extensive processing to be converted into a "readable" image. Ct scans are essentially fancy x-ray machines which can take "slices" of whatever is being examined (head, abdomen, chest, etc.) unlike mri, ct uses ionizing radiation.

Question 8

what is the difference between a pet scan & a ct scan?

Accepted Answer

PET is functional: A pet scan tells us which cells are taking up glucose which is a measure of functioning. Cancer cells take up too much glucose and other illnesses like dementia have cells that do not take up enough glucose.  A ct scan is a structural test and shows the outlines of cells and how big they are. Cts are useful for looking at bones and other sources of calcium.

Question 9

what is the difference between mri contrast and ct scan contrast ?

Accepted Answer

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 have a reaction to gadolinium during your MRI scan. True allergies to the MRI contrast are exrtremely rare; however, you may still experience some symptoms like feeling lightheaded or nauseated due to the injection. Good luck with the exam!

Question 10

what is the difference between empyema & pneumonia?do they look same/different on cxr,usg & non-contrast ct?do they have similar/different symptoms?

Accepted Answer

Different infections: Pneumonia is an infection of lung tissue.
 The lungs are lined by two slippery fibrous tissue linings with a little fluid in between to decrease friction when  we breathe.
 Empyema is infection in between those linings (the pleural space).
 Both can cause shortness of breath and fevers. Sometimes empyema needs to be drained with a tube to the outside. Pneumonia often is cured with antibiotics.

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What is the difference between grossly unremarkable and unremarkable on a CT

A member asked:

What is the difference between normal and grossly normal on a ct scan report? the radiologist listed most of my organs as grossly normal, but a few are just listed as normal.

A member asked:

What is the difference between ct and xray?

A member asked:

What is the difference between a ct venogram and ct with contrast?

A member asked:

What is the difference between an mri and a ct?

A member asked:

What is the difference between normal ct and pet ct scan?

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What is the difference between a ct and a ct angiogram?

A member asked:

What is the difference between ct and mri scan?

A member asked:

What is the difference between a pet scan & a ct scan?

A member asked:

What is the difference between mri contrast and ct scan contrast ?

A member asked:

What is the difference between empyema & pneumonia?do they look same/different on cxr,usg & non-contrast ct?do they have similar/different symptoms?

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