5 doctors weighed in:

What are the differences between pet scans, mri, ct, and bone/gallium scans?

5 doctors weighed in
Dr. Joseph Accurso
Radiology
1 doctor agrees

In brief: Anatomy vs Physiolog

Mri and ct scans are typically looking at the anatomy of a patient, as well as differences in blood flow if contrast is administered.
Pet, bone and gallium scans are all looking at the function, or physiology of the patient, and the anatomy is of secondary concern. For example, pet scans are usually using f-18 fdg, a glucose analog, and display differences in glucose use, a main energy source.

In brief: Anatomy vs Physiolog

Mri and ct scans are typically looking at the anatomy of a patient, as well as differences in blood flow if contrast is administered.
Pet, bone and gallium scans are all looking at the function, or physiology of the patient, and the anatomy is of secondary concern. For example, pet scans are usually using f-18 fdg, a glucose analog, and display differences in glucose use, a main energy source.
Dr. Joseph Accurso
Dr. Joseph Accurso
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Dr. Gerald Mandell
Nuclear Medicine
1 doctor agrees

In brief: Many differences

Mri (magnetic resonance) does not utilize ionizing radiation(ir) characterize tissues, extent of tumor, infection, damage to cartilage/ligaments.
Bone scan (ir) finds changes in bone reflecting tumors, fxs, infection( sensitive not specific) .Ct (ir) can localize traumatic changes, tumors, appendicitis, kidney disease.Pet/ct (ir) combo isotope /ct finds subtle metastases and recurrent malignancy, .

In brief: Many differences

Mri (magnetic resonance) does not utilize ionizing radiation(ir) characterize tissues, extent of tumor, infection, damage to cartilage/ligaments.
Bone scan (ir) finds changes in bone reflecting tumors, fxs, infection( sensitive not specific) .Ct (ir) can localize traumatic changes, tumors, appendicitis, kidney disease.Pet/ct (ir) combo isotope /ct finds subtle metastases and recurrent malignancy, .
Dr. Gerald Mandell
Dr. Gerald Mandell
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Dr. William Goldie
Pediatrics - Neurology

In brief: 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 tissues. Bone scans use activated agents that are taken up selectively by abnormal tissues. Each technique has it's benefits, risks, and degree of precision.

In brief: 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 tissues. Bone scans use activated agents that are taken up selectively by abnormal tissues. Each technique has it's benefits, risks, and degree of precision.
Dr. William Goldie
Dr. William Goldie
Thank
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